KGTP (Linux Kernel debugger and tracer) 20120424 release(doc update)[1/3]code
From: Hui Zhu
Date: Tue Apr 24 2012 - 09:20:16 EST
Signed-off-by: Hui Zhu <teawater@xxxxxxxxx>
---
arch/arm/include/asm/gtp.h | 15
arch/mips/include/asm/gtp.h | 19
arch/x86/include/asm/gtp.h | 22
include/linux/perf_event.h | 3
kernel/events/core.c | 14
lib/Kconfig.debug | 10
lib/Makefile | 4
lib/gtp.c | 8994 ++++++++++++++++++++++++++++++++++++++++++++
lib/gtp_rb.c | 498 ++
9 files changed, 9577 insertions(+), 2 deletions(-)
--- /dev/null
+++ b/arch/arm/include/asm/gtp.h
@@ -0,0 +1,15 @@
+#ifndef _ASM_ARM_GTP_H_
+#define _ASM_ARM_GTP_H_
+
+#define ULONGEST uint64_t
+#define LONGEST int64_t
+#define CORE_ADDR unsigned long
+
+#define GTP_REGS_PC(regs) ((regs)->uregs[15])
+
+#define GTP_REG_ASCII_SIZE 336
+#define GTP_REG_BIN_SIZE 168
+
+#define GTP_SP_NUM 13
+
+#endif
--- /dev/null
+++ b/arch/mips/include/asm/gtp.h
@@ -0,0 +1,19 @@
+#ifndef _ASM_MIPS_GTP_H_
+#define _ASM_MIPS_GTP_H_
+
+#define ULONGEST uint64_t
+#define LONGEST int64_t
+#define CORE_ADDR unsigned long
+
+#define GTP_REGS_PC(regs) ((regs)->cp0_epc)
+
+#ifdef CONFIG_32BIT
+#define GTP_REG_ASCII_SIZE 304
+#define GTP_REG_BIN_SIZE 152
+#else
+#define GTP_REG_ASCII_SIZE 608
+#define GTP_REG_BIN_SIZE 304
+#endif
+
+#define GTP_SP_NUM 29
+#endif
--- /dev/null
+++ b/arch/x86/include/asm/gtp.h
@@ -0,0 +1,22 @@
+#ifndef _ASM_X86_GTP_H_
+#define _ASM_X86_GTP_H_
+
+#define ULONGEST uint64_t
+#define LONGEST int64_t
+#define CORE_ADDR unsigned long
+
+#define GTP_REGS_PC(regs) ((regs)->ip)
+
+#ifdef CONFIG_X86_32
+#define GTP_REG_ASCII_SIZE 128
+#define GTP_REG_BIN_SIZE 64
+
+#define GTP_SP_NUM 4
+#else
+#define GTP_REG_ASCII_SIZE 296
+#define GTP_REG_BIN_SIZE 148
+
+#define GTP_SP_NUM 7
+#endif
+
+#endif
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1287,9 +1287,12 @@ extern void perf_output_copy(struct perf
const void *buf, unsigned int len);
extern int perf_swevent_get_recursion_context(void);
extern void perf_swevent_put_recursion_context(int rctx);
+extern int __perf_event_enable(void *info);
+extern int __perf_event_disable(void *info);
extern void perf_event_enable(struct perf_event *event);
extern void perf_event_disable(struct perf_event *event);
extern void perf_event_task_tick(void);
+extern void perf_event_set(struct perf_event *event, u64 val);
#else
static inline void
perf_event_task_sched_in(struct task_struct *prev,
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1249,7 +1249,7 @@ retry:
/*
* Cross CPU call to disable a performance event
*/
-static int __perf_event_disable(void *info)
+int __perf_event_disable(void *info)
{
struct perf_event *event = info;
struct perf_event_context *ctx = event->ctx;
@@ -1286,6 +1286,7 @@ static int __perf_event_disable(void *in
return 0;
}
+EXPORT_SYMBOL_GPL(__perf_event_disable);
/*
* Disable a event.
@@ -1697,7 +1698,7 @@ static void __perf_event_mark_enabled(st
/*
* Cross CPU call to enable a performance event
*/
-static int __perf_event_enable(void *info)
+int __perf_event_enable(void *info)
{
struct perf_event *event = info;
struct perf_event_context *ctx = event->ctx;
@@ -1761,6 +1762,7 @@ unlock:
return 0;
}
+EXPORT_SYMBOL_GPL(__perf_event_enable);
/*
* Enable a event.
@@ -3151,6 +3153,14 @@ static void perf_event_reset(struct perf
perf_event_update_userpage(event);
}
+void perf_event_set(struct perf_event *event, u64 val)
+{
+ (void)perf_event_read(event);
+ local64_set(&event->count, val);
+ perf_event_update_userpage(event);
+}
+EXPORT_SYMBOL_GPL(perf_event_set);
+
/*
* Holding the top-level event's child_mutex means that any
* descendant process that has inherited this event will block
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1289,6 +1289,16 @@ config ASYNC_RAID6_TEST
If unsure, say N.
+config GTP
+ tristate "GDB tracepoint support"
+ depends on X86 || ARM || MIPS
+ select KPROBES
+ select DEBUG_FS
+ ---help---
+ Supply GDB tracepoint interface in /sys/kernel/debug/gtp.
+ See Documentation/trace/gtp.txt or
+ https://code.google.com/p/kgtp/wiki/HOWTO for more info.
+
source "samples/Kconfig"
source "lib/Kconfig.kgdb"
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -123,6 +123,8 @@ obj-$(CONFIG_SIGNATURE) += digsig.o
obj-$(CONFIG_CLZ_TAB) += clz_tab.o
+obj-$(CONFIG_GTP) += gtp.o
+
hostprogs-y := gen_crc32table
clean-files := crc32table.h
@@ -133,3 +135,5 @@ quiet_cmd_crc32 = GEN $@
$(obj)/crc32table.h: $(obj)/gen_crc32table
$(call cmd,crc32)
+
+gtp.o: gtp_rb.c
--- /dev/null
+++ b/lib/gtp.c
@@ -0,0 +1,8994 @@
+/*
+ * Kernel GDB tracepoint module.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright(C) KGTP team (https://code.google.com/p/kgtp/), 2010, 2011, 2012
+ *
+ */
+
+/* If "* 10" means that this is not a release version. */
+#define GTP_VERSION (20120424)
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/vmalloc.h>
+#include <linux/poll.h>
+#include <linux/kprobes.h>
+#include <linux/interrupt.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <asm/gtp.h>
+
+#define GTP_RB
+
+/* If define GTP_FRAME_SIMPLE, KGTP will use simple frame allocer replace
+ ring buffer. */
+/* #define GTP_FRAME_SIMPLE */
+
+/* If define GTP_CLOCK_CYCLE, $clock will return rdtscll. */
+/* #define GTP_CLOCK_CYCLE */
+
+#ifdef GTP_FRAME_SIMPLE
+/* This define is for simple frame alloc record, then we can get how many
+ memory are weste by FRAME_ALIGN. */
+/* #define FRAME_ALLOC_RECORD */
+#endif
+
+#define KERN_NULL
+
+#ifdef GTPDEBUG
+#define GTP_DEBUG KERN_WARNING
+#endif
+
+/* #define GTP_DEBUG_V */
+
+#define GTP_RW_MAX 16384
+#define GTP_RW_BUFP_MAX (GTP_RW_MAX - 4 - gtp_rw_size)
+
+#define FID_TYPE unsigned int
+#define FID_SIZE sizeof(FID_TYPE)
+#define FID(x) (*((FID_TYPE *)x))
+#define FID_HEAD 0
+#define FID_REG 1
+#define FID_MEM 2
+#define FID_VAR 3
+#define FID_END 4
+#define FID_PAGE_BEGIN 5
+#define FID_PAGE_END 6
+
+/* GTP_FRAME_SIZE must align with FRAME_ALIGN_SIZE if use GTP_FRAME_SIMPLE. */
+#define GTP_FRAME_SIZE 5242880
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#define FRAME_ALIGN_SIZE sizeof(unsigned int)
+#define FRAME_ALIGN(x) ((x + FRAME_ALIGN_SIZE - 1) \
+ & (~(FRAME_ALIGN_SIZE - 1)))
+#endif
+#ifdef GTP_FRAME_SIMPLE
+#define GTP_FRAME_HEAD_SIZE (FID_SIZE + sizeof(char *) + sizeof(ULONGEST))
+#define GTP_FRAME_REG_SIZE (FID_SIZE + sizeof(char *) \
+ + sizeof(struct pt_regs))
+#define GTP_FRAME_MEM_SIZE (FID_SIZE + sizeof(char *) \
+ + sizeof(struct gtp_frame_mem))
+#define GTP_FRAME_VAR_SIZE (FID_SIZE + sizeof(char *) \
+ + sizeof(struct gtp_frame_var))
+#endif
+#ifdef GTP_RB
+#define GTP_FRAME_HEAD_SIZE (FID_SIZE + sizeof(u64) + sizeof(ULONGEST))
+#define GTP_FRAME_PAGE_BEGIN_SIZE (FID_SIZE + sizeof(u64))
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+#define GTP_FRAME_HEAD_SIZE (FID_SIZE + sizeof(ULONGEST))
+#endif
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+#define GTP_FRAME_REG_SIZE (FID_SIZE + sizeof(struct pt_regs))
+#define GTP_FRAME_MEM_SIZE (FID_SIZE + sizeof(struct gtp_frame_mem))
+#define GTP_FRAME_VAR_SIZE (FID_SIZE + sizeof(struct gtp_frame_var))
+#endif
+#include <linux/perf_event.h>
+
+#define INT2CHAR(h) ((h) > 9 ? (h) + 'a' - 10 : (h) + '0')
+
+enum {
+ op_check_add = 0xe5,
+ op_check_sub,
+ op_check_mul,
+ op_check_div_signed,
+ op_check_div_unsigned,
+ op_check_rem_signed,
+ op_check_rem_unsigned,
+ op_check_lsh,
+ op_check_rsh_signed,
+ op_check_rsh_unsigned,
+ op_check_trace,
+ op_check_bit_and,
+ op_check_bit_or,
+ op_check_bit_xor,
+ op_check_equal,
+ op_check_less_signed,
+ op_check_less_unsigned,
+ op_check_pop,
+ op_check_swap,
+ op_check_if_goto,
+ op_check_printf, /* XXX: still not used. */
+
+ op_special_getv = 0xfa,
+ op_special_setv,
+ op_special_tracev,
+
+ op_trace_printk = 0xfd,
+ op_trace_quick_printk,
+ op_tracev_printk,
+};
+
+struct action_agent_exp {
+ unsigned int size;
+ uint8_t *buf;
+ int need_var_lock;
+};
+
+struct action_m {
+ int regnum;
+ CORE_ADDR offset;
+ size_t size;
+};
+
+struct action {
+ struct action *next;
+ unsigned char type;
+ union {
+ ULONGEST reg_mask;
+ struct action_agent_exp exp;
+ struct action_m m;
+ } u;
+};
+
+struct gtpsrc {
+ struct gtpsrc *next;
+ char *src;
+};
+
+enum gtp_stop_type {
+ gtp_stop_normal = 0,
+ gtp_stop_frame_full,
+ gtp_stop_efault,
+ gtp_stop_access_wrong_reg,
+ gtp_stop_agent_expr_code_error,
+ gtp_stop_agent_expr_stack_overflow,
+};
+
+struct gtp_entry {
+ int kpreg;
+ int no_self_trace;
+ int nopass;
+ int have_printk;
+ ULONGEST num;
+ struct action *cond;
+ struct action *action_list;
+ int step;
+ struct action *step_action_list;
+ atomic_t current_pass;
+ struct gtpsrc *printk_str;
+ enum gtp_stop_type reason;
+ struct tasklet_struct tasklet;
+ struct work_struct work;
+ struct gtp_entry *next;
+ struct kretprobe kp;
+ int disable;
+ int is_kretprobe;
+ ULONGEST addr;
+ ULONGEST pass;
+ struct gtpsrc *src;
+ /* Sometime, it will not same with action
+ because action will be deleted. */
+ struct gtpsrc *action_cmd;
+};
+
+#ifdef CONFIG_PERF_EVENTS
+struct pe_tv_s {
+ struct pe_tv_s *pc_next;
+ int en;
+ struct perf_event *event;
+ int cpu;
+ u64 val;
+ u64 enabled; /* The perf inside timer */
+ u64 running; /* The perf inside timer */
+ char *name;
+ struct perf_event_attr attr;
+};
+#endif
+
+enum pe_tv_id {
+ pe_tv_unknown = 0,
+ pe_tv_cpu,
+ pe_tv_type,
+ pe_tv_config,
+ pe_tv_en,
+ pe_tv_val,
+ pe_tv_enabled,
+ pe_tv_running,
+};
+
+struct gtp_var {
+ struct gtp_var *next;
+ unsigned int num;
+ uint64_t val;
+ char *src;
+ struct gtp_var **per_cpu;
+#ifdef CONFIG_PERF_EVENTS
+ enum pe_tv_id ptid;
+ struct pe_tv_s *pts;
+#endif
+};
+
+struct gtp_frame_mem {
+ CORE_ADDR addr;
+ size_t size;
+};
+
+struct gtp_frame_var {
+ unsigned int num;
+ uint64_t val;
+};
+
+struct gtpro_entry {
+ struct gtpro_entry *next;
+ CORE_ADDR start;
+ CORE_ADDR end;
+};
+
+static pid_t gtp_gtp_pid;
+static unsigned int gtp_gtp_pid_count;
+static pid_t gtp_gtpframe_pid;
+static unsigned int gtp_gtpframe_pid_count;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+static pid_t gtp_gtpframe_pipe_pid;
+#endif
+
+static struct gtp_entry *gtp_list;
+static struct gtp_entry *current_gtp;
+static struct gtpsrc *current_gtp_action_cmd;
+static struct gtpsrc *current_gtp_src;
+
+static struct workqueue_struct *gtp_wq;
+
+static int gtp_read_ack;
+static char *gtp_rw_buf;
+static char *gtp_rw_bufp;
+static size_t gtp_rw_size;
+
+static int gtp_start;
+
+static int gtp_disconnected_tracing;
+static int gtp_circular;
+
+static int gtp_cpu_number;
+
+static DEFINE_SPINLOCK(gtp_var_lock);
+static struct gtp_var *gtp_var_list;
+static unsigned int gtp_var_head;
+static unsigned int gtp_var_tail;
+static struct gtp_var **gtp_var_array;
+static struct gtp_var *current_gtp_var;
+
+enum {
+ GTP_VAR_SPECIAL_MIN = 1,
+ GTP_VAR_VERSION_ID = GTP_VAR_SPECIAL_MIN,
+ GTP_VAR_CPU_ID,
+ GTP_VAR_CURRENT_TASK_ID,
+ GTP_VAR_CURRENT_THREAD_INFO_ID,
+ GTP_VAR_CLOCK_ID,
+ GTP_VAR_COOKED_CLOCK_ID,
+#ifdef CONFIG_X86
+ GTP_VAR_RDTSC_ID,
+ GTP_VAR_COOKED_RDTSC_ID,
+#endif
+#ifdef GTP_RB
+ GTP_VAR_GTP_RB_DISCARD_PAGE_NUMBER,
+#endif
+ GTP_VAR_PRINTK_TMP_ID,
+ GTP_VAR_PRINTK_LEVEL_ID,
+ GTP_VAR_PRINTK_FORMAT_ID,
+ GTP_VAR_DUMP_STACK_ID,
+ GTP_VAR_NO_SELF_TRACE_ID,
+ GTP_VAR_CPU_NUMBER_ID,
+ GTP_VAR_PC_PE_EN_ID,
+ GTP_VAR_KRET_ID,
+ GTP_VAR_XTIME_SEC_ID,
+ GTP_VAR_XTIME_NSEC_ID,
+ GTP_VAR_IGNORE_ERROR_ID,
+ GTP_VAR_LAST_ERRNO_ID,
+ GTP_VAR_HARDIRQ_COUNT_ID,
+ GTP_VAR_SOFTIRQ_COUNT_ID,
+ GTP_VAR_IRQ_COUNT_ID,
+ GTP_VAR_PIPE_TRACE_ID,
+ GTP_VAR_CURRENT_TASK_PID_ID,
+ GTP_VAR_BT_ID,
+ GTP_VAR_SPECIAL_MAX = GTP_VAR_BT_ID,
+};
+
+#define PREV_VAR NULL
+
+static struct gtp_var gtp_var_version = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_VERSION_ID,
+ .src = "0:1:6774705f76657273696f6e",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_version)
+
+static struct gtp_var gtp_var_cpu_id = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CPU_ID,
+ .src = "0:1:6370755f6964",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_cpu_id)
+
+static struct gtp_var gtp_var_current_task = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CURRENT_TASK_ID,
+ .src = "0:1:63757272656e745f7461736b",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_current_task)
+
+static struct gtp_var gtp_var_current_task_pid = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CURRENT_TASK_PID_ID,
+ .src = "0:1:63757272656e745f7461736b5f706964",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_current_task_pid)
+
+static struct gtp_var gtp_var_current_thread_info = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CURRENT_THREAD_INFO_ID,
+ .src = "0:1:63757272656e745f7468726561645f696e666f",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_current_thread_info)
+
+static struct gtp_var gtp_var_clock = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CLOCK_ID,
+ .src = "0:1:636c6f636b",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_clock)
+
+static struct gtp_var gtp_var_cooked_clock = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_COOKED_CLOCK_ID,
+ .src = "0:1:636f6f6b65645f636c6f636b",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_cooked_clock)
+
+#ifdef CONFIG_X86
+static struct gtp_var gtp_var_rdtsc = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_RDTSC_ID,
+ .src = "0:1:7264747363",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_rdtsc)
+static struct gtp_var gtp_var_cooked_rdtsc = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_COOKED_RDTSC_ID,
+ .src = "0:1:636f6f6b65645f7264747363",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_cooked_rdtsc)
+#endif
+
+#ifdef GTP_RB
+static struct gtp_var gtp_var_gtp_rb_discard_page_number = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_GTP_RB_DISCARD_PAGE_NUMBER,
+ .src = "0:1:646973636172645f706167655f6e756d",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_gtp_rb_discard_page_number)
+#endif
+
+static struct gtp_var gtp_var_printk_tmp = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_PRINTK_TMP_ID,
+ .src = "0:1:7072696e746b5f746d70",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_printk_tmp)
+
+static struct gtp_var gtp_var_printk_level = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_PRINTK_LEVEL_ID,
+ .src = "8:1:7072696e746b5f6c6576656c",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_printk_level)
+
+static struct gtp_var gtp_var_printk_format = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_PRINTK_FORMAT_ID,
+ .src = "0:1:7072696e746b5f666f726d6174",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_printk_format)
+
+static struct gtp_var gtp_var_dump_stack = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_DUMP_STACK_ID,
+ .src = "0:1:64756d705f737461636b",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_dump_stack)
+
+static struct gtp_var gtp_var_no_self_trace = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_NO_SELF_TRACE_ID,
+ .src = "0:1:6e6f5f73656c665f7472616365",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_no_self_trace)
+
+static struct gtp_var gtp_var_pipe_trace = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_PIPE_TRACE_ID,
+ .src = "0:1:706970655f7472616365",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_pipe_trace)
+
+static struct gtp_var gtp_var_cpu_number = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_CPU_NUMBER_ID,
+ .src = "0:1:6370755f6e756d626572",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_cpu_number)
+
+static struct gtp_var gtp_var_pc_pe_en = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_PC_PE_EN_ID,
+ .src = "0:1:70635f70655f656e",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_pc_pe_en)
+
+static struct gtp_var gtp_var_kret = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_KRET_ID,
+ .src = "0:1:6b726574",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_kret)
+
+static struct gtp_var gtp_var_xtime_sec = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_XTIME_SEC_ID,
+ .src = "0:1:7874696d655f736563",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_xtime_sec)
+
+static struct gtp_var gtp_var_xtime_nsec = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_XTIME_NSEC_ID,
+ .src = "0:1:7874696d655f6e736563",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_xtime_nsec)
+
+static struct gtp_var gtp_var_ignore_error = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_IGNORE_ERROR_ID,
+ .src = "0:1:69676e6f72655f6572726f72",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_ignore_error)
+
+static struct gtp_var gtp_var_last_errno = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_LAST_ERRNO_ID,
+ .src = "0:1:6c6173745f6572726e6f",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_last_errno)
+
+static struct gtp_var gtp_var_hardirq_count = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_HARDIRQ_COUNT_ID,
+ .src = "0:1:686172646972715f636f756e74",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_hardirq_count)
+
+static struct gtp_var gtp_var_softirq_count = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_SOFTIRQ_COUNT_ID,
+ .src = "0:1:736f66746972715f636f756e74",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_softirq_count)
+
+static struct gtp_var gtp_var_irq_count = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_IRQ_COUNT_ID,
+ .src = "0:1:6972715f636f756e74",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define PREV_VAR (>p_var_irq_count)
+
+static struct gtp_var gtp_var_bt = {
+ .next = PREV_VAR,
+ .num = GTP_VAR_BT_ID,
+ .src = "200:1:6274",
+ .per_cpu = NULL,
+#ifdef CONFIG_PERF_EVENTS
+ .ptid = 0,
+ .pts = NULL,
+#endif
+};
+#undef PREV_VAR
+#define GTP_VAR_LIST_FIRST (>p_var_bt)
+
+#define GTP_VAR_IS_SPECIAL(x) ((x) >= GTP_VAR_SPECIAL_MIN \
+ && (x) <= GTP_VAR_SPECIAL_MAX)
+#ifdef GTP_RB
+#define GTP_VAR_AUTO_TRACEV(x) ((x) == GTP_VAR_CPU_ID)
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+#define GTP_VAR_AUTO_TRACEV(x) ((x) == GTP_VAR_CLOCK_ID \
+ || (x) == GTP_VAR_CPU_ID)
+#endif
+
+/* Current number in the frame. */
+static int gtp_frame_current_num;
+/* Current tracepoint id. */
+static ULONGEST gtp_frame_current_tpe;
+static atomic_t gtp_frame_create;
+static char *gtp_frame_file;
+static size_t gtp_frame_file_size;
+static DECLARE_WAIT_QUEUE_HEAD(gtpframe_wq);
+#ifdef GTP_FRAME_SIMPLE
+static DEFINE_SPINLOCK(gtp_frame_lock);
+static char *gtp_frame;
+static char *gtp_frame_r_start;
+static char *gtp_frame_w_start;
+static char *gtp_frame_end;
+static int gtp_frame_is_circular;
+static char *gtp_frame_current;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+static struct ring_buffer *gtp_frame;
+static struct ring_buffer_iter *gtp_frame_iter[NR_CPUS];
+static int gtp_frame_current_cpu;
+static u64 gtp_frame_current_clock;
+#endif
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+static DECLARE_WAIT_QUEUE_HEAD(gtpframe_pipe_wq);
+static atomic_t gtpframe_pipe_wq_v;
+static struct tasklet_struct gtpframe_pipe_wq_tasklet;
+#endif
+
+static struct gtpro_entry *gtpro_list;
+
+#define GTP_PRINTF_MAX 256
+static DEFINE_PER_CPU(char[GTP_PRINTF_MAX], gtp_printf);
+
+#ifdef CONFIG_X86
+static DEFINE_PER_CPU(u64, rdtsc_current);
+static DEFINE_PER_CPU(u64, rdtsc_offset);
+#endif
+static DEFINE_PER_CPU(u64, local_clock_current);
+static DEFINE_PER_CPU(u64, local_clock_offset);
+
+static uint64_t gtp_start_last_errno;
+static int gtp_start_ignore_error;
+
+static int gtp_pipe_trace;
+
+static int gtp_bt_size;
+
+static int gtp_noack_mode;
+
+#ifdef GTP_RB
+#include "gtp_rb.c"
+#endif
+
+#define GTP_LOCAL_CLOCK local_clock()
+
+struct gtp_realloc_s {
+ char *buf;
+ size_t size;
+ size_t real_size;
+};
+
+static int
+gtp_realloc_alloc(struct gtp_realloc_s *grs, size_t size)
+{
+ if (size) {
+ grs->buf = vmalloc(size);
+ if (!grs->buf)
+ return -ENOMEM;
+ } else
+ grs->buf = NULL;
+
+ grs->size = 0;
+ grs->real_size = size;
+
+ return 0;
+}
+
+static char *
+gtp_realloc(struct gtp_realloc_s *grs, size_t size, int is_end)
+{
+ char *tmp;
+
+ if (unlikely((grs->real_size < grs->size + size)
+ || (is_end && grs->real_size != grs->size + size))) {
+ grs->real_size = grs->size + size;
+ if (!is_end)
+ grs->real_size += 100;
+
+ tmp = vmalloc(grs->real_size);
+ if (!tmp) {
+ vfree(grs->buf);
+ memset(grs, 0, sizeof(struct gtp_realloc_s));
+ return NULL;
+ }
+
+ memcpy(tmp, grs->buf, grs->size);
+ if (grs->buf)
+ vfree(grs->buf);
+ grs->buf = tmp;
+ }
+
+ grs->size += size;
+ return grs->buf + grs->size - size;
+}
+
+static int
+gtp_realloc_str(struct gtp_realloc_s *grs, char *str, int is_end)
+{
+ char *wbuf;
+ int str_len = strlen(str);
+
+ wbuf = gtp_realloc(grs, str_len, is_end);
+ if (wbuf == NULL)
+ return -ENOMEM;
+
+ memcpy(wbuf, str, str_len);
+
+ return 0;
+}
+
+static inline void
+gtp_realloc_reset(struct gtp_realloc_s *grs)
+{
+ grs->size = 0;
+}
+
+static inline int
+gtp_realloc_is_alloced(struct gtp_realloc_s *grs)
+{
+ return (grs->buf != NULL);
+}
+
+static inline int
+gtp_realloc_is_empty(struct gtp_realloc_s *grs)
+{
+ return (grs->size == 0);
+}
+
+static inline void
+gtp_realloc_sub_size(struct gtp_realloc_s *grs, size_t size)
+{
+ grs->size -= size;
+}
+
+#ifdef CONFIG_X86
+static ULONGEST
+gtp_action_reg_read(struct pt_regs *regs, struct gtp_entry *tpe, int num)
+{
+ ULONGEST ret;
+
+ switch (num) {
+#ifdef CONFIG_X86_32
+ case 0:
+ ret = regs->ax;
+ break;
+ case 1:
+ ret = regs->cx;
+ break;
+ case 2:
+ ret = regs->dx;
+ break;
+ case 3:
+ ret = regs->bx;
+ break;
+ case 4:
+ ret = (ULONGEST)(CORE_ADDR)®s->sp;
+ break;
+ case 5:
+ ret = regs->bp;
+ break;
+ case 6:
+ ret = regs->si;
+ break;
+ case 7:
+ ret = regs->di;
+ break;
+ case 8:
+ if (tpe->step)
+ ret = regs->ip;
+ else
+ ret = regs->ip - 1;
+ break;
+ case 9:
+ ret = regs->flags;
+ break;
+ case 10:
+ ret = regs->cs;
+ break;
+ case 11:
+ ret = regs->ss;
+ break;
+ case 12:
+ ret = regs->ds;
+ break;
+ case 13:
+ ret = regs->es;
+ break;
+ case 14:
+ ret = regs->fs;
+ break;
+ case 15:
+ ret = regs->gs;
+ break;
+#else
+ case 0:
+ ret = regs->ax;
+ break;
+ case 1:
+ ret = regs->bx;
+ break;
+ case 2:
+ ret = regs->cx;
+ break;
+ case 3:
+ ret = regs->dx;
+ break;
+ case 4:
+ ret = regs->si;
+ break;
+ case 5:
+ ret = regs->di;
+ break;
+ case 6:
+ ret = regs->bp;
+ break;
+ case 7:
+ ret = regs->sp;
+ break;
+ case 8:
+ ret = regs->r8;
+ break;
+ case 9:
+ ret = regs->r9;
+ break;
+ case 10:
+ ret = regs->r10;
+ break;
+ case 11:
+ ret = regs->r11;
+ break;
+ case 12:
+ ret = regs->r12;
+ break;
+ case 13:
+ ret = regs->r13;
+ break;
+ case 14:
+ ret = regs->r14;
+ break;
+ case 15:
+ ret = regs->r15;
+ break;
+ case 16:
+ if (tpe->step)
+ ret = regs->ip;
+ else
+ ret = regs->ip - 1;
+ break;
+ case 17:
+ ret = regs->flags;
+ break;
+ case 18:
+ ret = regs->cs;
+ break;
+ case 19:
+ ret = regs->ss;
+ break;
+#endif
+ default:
+ ret = 0;
+ tpe->reason = gtp_stop_access_wrong_reg;
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gtp_regs2ascii(struct pt_regs *regs, char *buf)
+{
+#ifdef CONFIG_X86_32
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ax = 0x%x\n",
+ (unsigned int) regs->ax);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cx = 0x%x\n",
+ (unsigned int) regs->cx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: dx = 0x%x\n",
+ (unsigned int) regs->dx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bx = 0x%x\n",
+ (unsigned int) regs->bx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: sp = 0x%x\n",
+ (unsigned int) regs->sp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bp = 0x%x\n",
+ (unsigned int) regs->bp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: si = 0x%x\n",
+ (unsigned int) regs->si);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: di = 0x%x\n",
+ (unsigned int) regs->di);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ip = 0x%x\n",
+ (unsigned int) regs->ip);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: flags = 0x%x\n",
+ (unsigned int) regs->flags);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cs = 0x%x\n",
+ (unsigned int) regs->cs);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ss = 0x%x\n",
+ (unsigned int) regs->ss);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ds = 0x%x\n",
+ (unsigned int) regs->ds);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: es = 0x%x\n",
+ (unsigned int) regs->es);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: fs = 0x%x\n",
+ (unsigned int) regs->fs);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: gs = 0x%x\n",
+ (unsigned int) regs->gs);
+#endif
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->ax));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->cx));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->dx));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->bx));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->sp));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->bp));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->si));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->di));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->ip));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->flags));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->cs));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->ss));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->ds));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->es));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->fs));
+ buf += 8;
+ sprintf(buf, "%08x", (unsigned int) swab32(regs->gs));
+ buf += 8;
+#else
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ax = 0x%lx\n", regs->ax);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bx = 0x%lx\n", regs->bx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cx = 0x%lx\n", regs->cx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: dx = 0x%lx\n", regs->dx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: si = 0x%lx\n", regs->si);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: di = 0x%lx\n", regs->di);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bp = 0x%lx\n", regs->bp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: sp = 0x%lx\n", regs->sp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r8 = 0x%lx\n", regs->r8);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r9 = 0x%lx\n", regs->r9);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r10 = 0x%lx\n", regs->r10);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r11 = 0x%lx\n", regs->r11);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r12 = 0x%lx\n", regs->r12);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r13 = 0x%lx\n", regs->r13);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r14 = 0x%lx\n", regs->r14);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r15 = 0x%lx\n", regs->r15);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ip = 0x%lx\n", regs->ip);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: flags = 0x%lx\n", regs->flags);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cs = 0x%lx\n", regs->cs);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ss = 0x%lx\n", regs->ss);
+#endif
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->ax));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->bx));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->cx));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->dx));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->si));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->di));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->bp));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->sp));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r8));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r9));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r10));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r11));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r12));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r13));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r14));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->r15));
+ buf += 16;
+ sprintf(buf, "%016lx", (unsigned long) swab64(regs->ip));
+ buf += 16;
+ sprintf(buf, "%08x",
+ (unsigned int) swab32((unsigned int)regs->flags));
+ buf += 8;
+ sprintf(buf, "%08x",
+ (unsigned int) swab32((unsigned int)regs->cs));
+ buf += 8;
+ sprintf(buf, "%08x",
+ (unsigned int) swab32((unsigned int)regs->ss));
+ buf += 8;
+#endif
+}
+
+static void
+gtp_regs2bin(struct pt_regs *regs, char *buf)
+{
+#ifdef CONFIG_X86_32
+#ifdef GTP_DEBUG_V_V
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: ax = 0x%x\n",
+ (unsigned int) regs->ax);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: cx = 0x%x\n",
+ (unsigned int) regs->cx);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: dx = 0x%x\n",
+ (unsigned int) regs->dx);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: bx = 0x%x\n",
+ (unsigned int) regs->bx);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: sp = 0x%x\n",
+ (unsigned int) regs->sp);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: bp = 0x%x\n",
+ (unsigned int) regs->bp);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: si = 0x%x\n",
+ (unsigned int) regs->si);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: di = 0x%x\n",
+ (unsigned int) regs->di);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: ip = 0x%x\n",
+ (unsigned int) regs->ip);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: flags = 0x%x\n",
+ (unsigned int) regs->flags);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: cs = 0x%x\n",
+ (unsigned int) regs->cs);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: ss = 0x%x\n",
+ (unsigned int) regs->ss);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: ds = 0x%x\n",
+ (unsigned int) regs->ds);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: es = 0x%x\n",
+ (unsigned int) regs->es);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: fs = 0x%x\n",
+ (unsigned int) regs->fs);
+ printk(GTP_DEBUG_V_V "gtp_regs2ascii: gs = 0x%x\n",
+ (unsigned int) regs->gs);
+#endif
+ memcpy(buf, ®s->ax, 4);
+ buf += 4;
+ memcpy(buf, ®s->cx, 4);
+ buf += 4;
+ memcpy(buf, ®s->dx, 4);
+ buf += 4;
+ memcpy(buf, ®s->bx, 4);
+ buf += 4;
+ memcpy(buf, ®s->sp, 4);
+ buf += 4;
+ memcpy(buf, ®s->bp, 4);
+ buf += 4;
+ memcpy(buf, ®s->si, 4);
+ buf += 4;
+ memcpy(buf, ®s->di, 4);
+ buf += 4;
+ memcpy(buf, ®s->ip, 4);
+ buf += 4;
+ memcpy(buf, ®s->flags, 4);
+ buf += 4;
+ memcpy(buf, ®s->cs, 4);
+ buf += 4;
+ memcpy(buf, ®s->ss, 4);
+ buf += 4;
+ memcpy(buf, ®s->ds, 4);
+ buf += 4;
+ memcpy(buf, ®s->es, 4);
+ buf += 4;
+ memcpy(buf, ®s->fs, 4);
+ buf += 4;
+ memcpy(buf, ®s->gs, 4);
+ buf += 4;
+#else
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ax = 0x%lx\n", regs->ax);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bx = 0x%lx\n", regs->bx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cx = 0x%lx\n", regs->cx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: dx = 0x%lx\n", regs->dx);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: si = 0x%lx\n", regs->si);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: di = 0x%lx\n", regs->di);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: bp = 0x%lx\n", regs->bp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: sp = 0x%lx\n", regs->sp);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r8 = 0x%lx\n", regs->r8);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r9 = 0x%lx\n", regs->r9);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r10 = 0x%lx\n", regs->r10);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r11 = 0x%lx\n", regs->r11);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r12 = 0x%lx\n", regs->r12);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r13 = 0x%lx\n", regs->r13);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r14 = 0x%lx\n", regs->r14);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: r15 = 0x%lx\n", regs->r15);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ip = 0x%lx\n", regs->ip);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: flags = 0x%lx\n", regs->flags);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: cs = 0x%lx\n", regs->cs);
+ printk(GTP_DEBUG_V "gtp_regs2ascii: ss = 0x%lx\n", regs->ss);
+#endif
+ memcpy(buf, ®s->ax, 8);
+ buf += 8;
+ memcpy(buf, ®s->bx, 8);
+ buf += 8;
+ memcpy(buf, ®s->cx, 8);
+ buf += 8;
+ memcpy(buf, ®s->dx, 8);
+ buf += 8;
+ memcpy(buf, ®s->si, 8);
+ buf += 8;
+ memcpy(buf, ®s->di, 8);
+ buf += 8;
+ memcpy(buf, ®s->bp, 8);
+ buf += 8;
+ memcpy(buf, ®s->sp, 8);
+ buf += 8;
+ memcpy(buf, ®s->r8, 8);
+ buf += 8;
+ memcpy(buf, ®s->r9, 8);
+ buf += 8;
+ memcpy(buf, ®s->r10, 8);
+ buf += 8;
+ memcpy(buf, ®s->r11, 8);
+ buf += 8;
+ memcpy(buf, ®s->r12, 8);
+ buf += 8;
+ memcpy(buf, ®s->r13, 8);
+ buf += 8;
+ memcpy(buf, ®s->r14, 8);
+ buf += 8;
+ memcpy(buf, ®s->r15, 8);
+ buf += 8;
+ memcpy(buf, ®s->ip, 8);
+ buf += 8;
+ memcpy(buf, ®s->flags, 4);
+ buf += 4;
+ memcpy(buf, ®s->cs, 4);
+ buf += 4;
+ memcpy(buf, ®s->ss, 4);
+ buf += 4;
+#endif
+}
+#endif
+
+#ifdef CONFIG_MIPS
+static ULONGEST
+gtp_action_reg_read(struct pt_regs *regs, struct gtp_entry *tpe, int num)
+{
+ ULONGEST ret;
+
+ if (num > 90) {
+ /* GDB convert the reg number to a GDB
+ [1 * gdbarch_num_regs .. 2 * gdbarch_num_regs) REGNUM
+ in function mips_dwarf_dwarf2_ecoff_reg_to_regnum. */
+ num -= 90;
+ }
+
+ if (num >= 0 && num <= 31) {
+ ret = regs->regs[num];
+ } else {
+ switch (num) {
+ case 32:
+ ret = regs->cp0_status;
+ break;
+ case 33:
+ ret = regs->lo;
+ break;
+ case 34:
+ ret = regs->hi;
+ break;
+ case 35:
+ ret = regs->cp0_badvaddr;
+ break;
+ case 36:
+ ret = regs->cp0_cause;
+ break;
+ case 37:
+ ret = regs->cp0_epc;
+ break;
+ default:
+ ret = 0;
+ tpe->reason = gtp_stop_access_wrong_reg;
+ break;
+ }
+ }
+
+ return ret;
+};
+
+static void
+gtp_regs2ascii(struct pt_regs *regs, char *buf)
+{
+#ifdef GTP_DEBUG_V
+ {
+ int i;
+
+ for (i = 0; i < 32; i++)
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: r%d = 0x%lx\n", i,
+ regs->regs[i]);
+ }
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: status = 0x%lx\n",
+ regs->cp0_status);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: lo = 0x%lx\n", regs->lo);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: hi = 0x%lx\n", regs->hi);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: badvaddr = 0x%lx\n",
+ regs->cp0_badvaddr);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: cause = 0x%lx\n", regs->cp0_cause);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: pc = 0x%lx\n", regs->cp0_epc);
+#endif
+
+#ifdef CONFIG_32BIT
+#define OUTFORMAT "%08lx"
+#define REGSIZE 8
+#ifdef __LITTLE_ENDIAN
+#define SWAB(a) swab32(a)
+#else
+#define SWAB(a) (a)
+#endif
+#else
+#define OUTFORMAT "%016lx"
+#define REGSIZE 16
+#ifdef __LITTLE_ENDIAN
+#define SWAB(a) swab64(a)
+#else
+#define SWAB(a) (a)
+#endif
+#endif
+ {
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->regs[i]));
+ buf += REGSIZE;
+ }
+ }
+
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->cp0_status));
+ buf += REGSIZE;
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->lo));
+ buf += REGSIZE;
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->hi));
+ buf += REGSIZE;
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->cp0_badvaddr));
+ buf += REGSIZE;
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->cp0_cause));
+ buf += REGSIZE;
+ sprintf(buf, OUTFORMAT,
+ (unsigned long) SWAB(regs->cp0_epc));
+ buf += REGSIZE;
+#undef OUTFORMAT
+#undef REGSIZE
+#undef SWAB
+}
+
+static void
+gtp_regs2bin(struct pt_regs *regs, char *buf)
+{
+#ifdef GTP_DEBUG_V
+ {
+ int i;
+
+ for (i = 0; i < 32; i++)
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: r%d = 0x%lx\n", i,
+ regs->regs[i]);
+ }
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: status = 0x%lx\n",
+ regs->cp0_status);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: lo = 0x%lx\n", regs->lo);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: hi = 0x%lx\n", regs->hi);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: badvaddr = 0x%lx\n",
+ regs->cp0_badvaddr);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: cause = 0x%lx\n", regs->cp0_cause);
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: pc = 0x%lx\n", regs->cp0_epc);
+#endif
+
+#ifdef CONFIG_32BIT
+#define REGSIZE 4
+#else
+#define REGSIZE 8
+#endif
+ {
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ memcpy(buf, ®s->regs[i], REGSIZE);
+ buf += REGSIZE;
+ }
+ }
+ memcpy(buf, ®s->cp0_status, REGSIZE);
+ buf += REGSIZE;
+ memcpy(buf, ®s->lo, REGSIZE);
+ buf += REGSIZE;
+ memcpy(buf, ®s->hi, REGSIZE);
+ buf += REGSIZE;
+ memcpy(buf, ®s->cp0_badvaddr, REGSIZE);
+ buf += REGSIZE;
+ memcpy(buf, ®s->cp0_cause, REGSIZE);
+ buf += REGSIZE;
+ memcpy(buf, ®s->cp0_epc, REGSIZE);
+ buf += REGSIZE;
+#undef REGSIZE
+}
+#endif
+
+#ifdef CONFIG_ARM
+static ULONGEST
+gtp_action_reg_read(struct pt_regs *regs, struct gtp_entry *tpe, int num)
+{
+ if (num >= 0 && num < 16)
+ return regs->uregs[num];
+ else if (num == 25)
+ return regs->uregs[16];
+
+ tpe->reason = gtp_stop_access_wrong_reg;
+ return 0;
+}
+
+static void
+gtp_regs2ascii(struct pt_regs *regs, char *buf)
+{
+#ifdef __LITTLE_ENDIAN
+#define SWAB(a) swab32(a)
+#else
+#define SWAB(a) (a)
+#endif
+ int i;
+
+ for (i = 0; i < 16; i++) {
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: r%d = 0x%lx\n",
+ i, regs->uregs[i]);
+#endif
+ sprintf(buf, "%08lx", (unsigned long) SWAB(regs->uregs[i]));
+ buf += 8;
+ }
+
+ /* f0-f7 fps */
+ memset(buf, '0', 200);
+ buf += 200;
+
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: cpsr = 0x%lx\n", regs->uregs[16]);
+#endif
+ sprintf(buf, "%08lx",
+ (unsigned long) SWAB(regs->uregs[16]));
+ buf += 8;
+#undef SWAB
+}
+
+static void
+gtp_regs2bin(struct pt_regs *regs, char *buf)
+{
+ int i;
+
+ for (i = 0; i < 16; i++) {
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: r%d = 0x%lx\n",
+ i, regs->uregs[i]);
+#endif
+ memcpy(buf, ®s->uregs[i], 4);
+ buf += 4;
+ }
+
+ /* f0-f7 fps */
+ memset(buf, '\0', 100);
+ buf += 100;
+
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_gdbrsp_g: cpsr = 0x%lx\n", regs->uregs[16]);
+#endif
+ memcpy(buf, ®s->uregs[16], 4);
+ buf += 4;
+}
+#endif
+
+#ifdef CONFIG_PERF_EVENTS
+static DEFINE_PER_CPU(int, pc_pe_list_all_disabled);
+static DEFINE_PER_CPU(struct pe_tv_s *, pc_pe_list);
+
+static void
+pc_pe_list_disable(void)
+{
+ struct pe_tv_s *ppl;
+
+ if (__get_cpu_var(pc_pe_list_all_disabled))
+ return;
+
+ for (ppl = __get_cpu_var(pc_pe_list); ppl; ppl = ppl->pc_next) {
+ if (ppl->en)
+ __perf_event_disable(ppl->event);
+ }
+}
+
+static void
+pc_pe_list_enable(void)
+{
+ struct pe_tv_s *ppl;
+
+ if (__get_cpu_var(pc_pe_list_all_disabled))
+ return;
+
+ for (ppl = __get_cpu_var(pc_pe_list); ppl; ppl = ppl->pc_next) {
+ if (ppl->en)
+ __perf_event_enable(ppl->event);
+ }
+}
+
+static void
+gtp_pc_pe_en(int enable)
+{
+ struct pe_tv_s *ppl = __get_cpu_var(pc_pe_list);
+
+ for (ppl = __get_cpu_var(pc_pe_list); ppl; ppl = ppl->pc_next)
+ ppl->en = enable;
+
+ __get_cpu_var(pc_pe_list_all_disabled) = !enable;
+}
+
+static void
+gtp_pe_set_en(struct pe_tv_s *pts, int enable)
+{
+ if (pts->event->cpu != smp_processor_id()) {
+ if (enable)
+ perf_event_enable(pts->event);
+ else
+ perf_event_disable(pts->event);
+ }
+ pts->en = enable;
+}
+#else
+static void
+gtp_pc_pe_en(int enable)
+{
+}
+#endif /* CONFIG_PERF_EVENTS */
+
+#ifdef GTP_FRAME_SIMPLE
+static char *
+gtp_frame_next(char *frame)
+{
+ switch (FID(frame)) {
+ case FID_HEAD:
+ frame += FRAME_ALIGN(GTP_FRAME_HEAD_SIZE);
+ break;
+ case FID_REG:
+ frame += FRAME_ALIGN(GTP_FRAME_REG_SIZE);
+ break;
+ case FID_MEM: {
+ struct gtp_frame_mem *gfm;
+
+ gfm = (struct gtp_frame_mem *) (frame + FID_SIZE
+ + sizeof(char *));
+ frame += FRAME_ALIGN(GTP_FRAME_MEM_SIZE + gfm->size);
+ }
+ break;
+ case FID_VAR:
+ frame += FRAME_ALIGN(GTP_FRAME_VAR_SIZE);
+ break;
+ case FID_END:
+ frame = gtp_frame_end;
+ break;
+ default:
+ return NULL;
+ break;
+ }
+
+ return frame;
+}
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+#ifdef FRAME_ALLOC_RECORD
+ULONGEST frame_alloc_size;
+ULONGEST frame_alloc_size_hole;
+#endif
+
+static char *
+gtp_frame_alloc(size_t size)
+{
+ char *ret = NULL;
+
+#ifdef FRAME_ALLOC_RECORD
+ frame_alloc_size += size;
+ frame_alloc_size_hole += (FRAME_ALIGN(size) - size);
+#endif
+
+ size = FRAME_ALIGN(size);
+
+ if (size > GTP_FRAME_SIZE)
+ return NULL;
+
+ spin_lock(>p_frame_lock);
+
+ if (gtp_frame_w_start + size > gtp_frame_end) {
+ if (gtp_circular) {
+ gtp_frame_is_circular = 1;
+#ifdef FRAME_ALLOC_RECORD
+ if (gtp_frame_w_start != gtp_frame_end
+ && gtp_frame_end - gtp_frame_w_start < FID_SIZE) {
+ printk(KERN_WARNING "Frame align wrong."
+ "start = %p end = %p\n",
+ gtp_frame_w_start, gtp_frame_end);
+ goto out;
+ }
+#endif
+ if (gtp_frame_w_start != gtp_frame_end)
+ FID(gtp_frame_w_start) = FID_END;
+ gtp_frame_w_start = gtp_frame;
+ gtp_frame_r_start = gtp_frame;
+ } else
+ goto out;
+ }
+
+ if (gtp_frame_is_circular) {
+ while (gtp_frame_w_start <= gtp_frame_r_start
+ && gtp_frame_w_start + size > gtp_frame_r_start) {
+ char *tmp = gtp_frame_next(gtp_frame_r_start);
+ if (tmp == NULL)
+ goto out;
+ if (tmp == gtp_frame_end)
+ gtp_frame_r_start = gtp_frame;
+ else
+ gtp_frame_r_start = tmp;
+ }
+ }
+
+ ret = gtp_frame_w_start;
+ gtp_frame_w_start += size;
+
+out:
+ spin_unlock(>p_frame_lock);
+ return ret;
+}
+#endif
+
+struct gtp_trace_s {
+ struct gtp_entry *tpe;
+ struct pt_regs *regs;
+#ifdef GTP_FRAME_SIMPLE
+ /* Next part set it to prev part. */
+ char **next;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ /* NULL means doesn't have head. */
+ char *next;
+#endif
+#ifdef GTP_RB
+ /* rb of current cpu. */
+ struct gtp_rb_s *next;
+ u64 id;
+#endif
+ int step;
+ struct kretprobe_instance *ri;
+ int *run;
+ struct timespec xtime;
+ ULONGEST printk_tmp;
+ unsigned int printk_level;
+ unsigned int printk_format;
+ struct gtpsrc *printk_str;
+};
+
+#define GTP_PRINTK_FORMAT_A 0
+#define GTP_PRINTK_FORMAT_D 1
+#define GTP_PRINTK_FORMAT_U 2
+#define GTP_PRINTK_FORMAT_X 3
+#define GTP_PRINTK_FORMAT_S 4
+#define GTP_PRINTK_FORMAT_B 5
+
+#ifdef GTP_FTRACE_RING_BUFFER
+#define GTP_FRAME_RINGBUFFER_ALLOC(size) \
+ do { \
+ rbe = ring_buffer_lock_reserve(gtp_frame, size); \
+ if (rbe == NULL) { \
+ gts->tpe->reason = gtp_stop_frame_full; \
+ return -1; \
+ } \
+ tmp = ring_buffer_event_data(rbe); \
+ } while (0)
+#endif
+
+static struct gtp_var *gtp_gtp_var_array_find(unsigned int num);
+static int gtp_collect_var(struct gtp_trace_s *gts,
+ struct gtp_var *tve);
+
+static int
+gtp_action_head(struct gtp_trace_s *gts)
+{
+ char *tmp;
+ ULONGEST *trace_nump;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+#endif
+
+#ifdef GTP_RB
+ gts->next = (struct gtp_rb_s *)this_cpu_ptr(gtp_rb);
+#endif
+
+ /* Get the head. */
+#ifdef GTP_FTRACE_RING_BUFFER
+ GTP_FRAME_RINGBUFFER_ALLOC(GTP_FRAME_HEAD_SIZE);
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#ifdef GTP_RB
+ GTP_RB_LOCK(gts->next);
+ tmp = gtp_rb_alloc(gts->next, GTP_FRAME_HEAD_SIZE, 0);
+#endif
+#ifdef GTP_FRAME_SIMPLE
+ tmp = gtp_frame_alloc(GTP_FRAME_HEAD_SIZE);
+#endif
+ if (!tmp) {
+ gts->tpe->reason = gtp_stop_frame_full;
+ return -1;
+ }
+#endif
+
+ FID(tmp) = FID_HEAD;
+ tmp += FID_SIZE;
+
+#ifdef GTP_RB
+ gts->id = gtp_rb_clock();
+ *(u64 *)tmp = gts->id;
+ tmp += sizeof(u64);
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+ gts->next = (char **)tmp;
+ *(gts->next) = NULL;
+ tmp += sizeof(char *);
+#endif
+
+ trace_nump = (ULONGEST *)tmp;
+ *trace_nump = gts->tpe->num;
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_unlock_commit(gtp_frame, rbe);
+ gts->next = (char *)1;
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+ /* Trace $cpu_id and $clock. */
+ {
+ struct gtp_var *tve;
+
+ tve = gtp_gtp_var_array_find(GTP_VAR_CLOCK_ID);
+ if (!tve) {
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ }
+ if (gtp_collect_var(gts, tve))
+ return -1;
+ tve = gtp_gtp_var_array_find(GTP_VAR_CPU_ID);
+ if (!tve) {
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ }
+ if (gtp_collect_var(gts, tve))
+ return -1;
+ }
+#endif
+
+ atomic_inc(>p_frame_create);
+
+ return 0;
+}
+
+static int
+gtp_action_printk(struct gtp_trace_s *gts, ULONGEST addr, size_t size)
+{
+ unsigned int printk_format = gts->printk_format;
+ char *pbuf = __get_cpu_var(gtp_printf);
+
+ if (gts->printk_str == NULL) {
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p "
+ "printk doesn't have var name. Please "
+ "check actions of it.\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr);
+ return -1;
+ }
+
+ if (size) {
+ if (size > GTP_PRINTF_MAX - 1)
+ size = GTP_PRINTF_MAX - 1;
+ if (gts->printk_format != GTP_PRINTK_FORMAT_S
+ && gts->printk_format != GTP_PRINTK_FORMAT_B
+ && size > 8)
+ size = 8;
+ if (probe_kernel_read(pbuf, (void *)(CORE_ADDR)addr, size)) {
+ gts->tpe->reason = gtp_stop_efault;
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p "
+ "read %p %u get error.\n",
+ (int)gts->tpe->num,
+ (void *)(CORE_ADDR)gts->tpe->addr,
+ (void *)(CORE_ADDR)addr,
+ (unsigned int)size);
+ return -1;
+ }
+ } else {
+ size = sizeof(ULONGEST);
+ memcpy(pbuf, &addr, sizeof(ULONGEST));
+ }
+
+ if (printk_format == GTP_PRINTK_FORMAT_A) {
+ if (size == 1 || size == 2 || size == 4 || size == 8)
+ printk_format = GTP_PRINTK_FORMAT_U;
+ else
+ printk_format = GTP_PRINTK_FORMAT_B;
+ }
+
+ switch (printk_format) {
+ case GTP_PRINTK_FORMAT_D:
+ switch (size) {
+ case 1:
+ printk(KERN_NULL "<%d>%s%d\n", gts->printk_level,
+ gts->printk_str->src, pbuf[0]);
+ break;
+ case 2:
+ printk(KERN_NULL "<%d>%s%d\n", gts->printk_level,
+ gts->printk_str->src, (int)(*(short *)pbuf));
+ break;
+ case 4:
+ printk(KERN_NULL "<%d>%s%d\n", gts->printk_level,
+ gts->printk_str->src, *(int *)pbuf);
+ break;
+ case 8:
+ printk(KERN_NULL "<%d>%s%lld\n", gts->printk_level,
+ gts->printk_str->src, *(long long *)pbuf);
+ break;
+ default:
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p "
+ "size %d cannot printk.\n",
+ (int)gts->tpe->num,
+ (void *)(CORE_ADDR)gts->tpe->addr,
+ (unsigned int)size);
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ break;
+ }
+ break;
+ case GTP_PRINTK_FORMAT_U:
+ switch (size) {
+ case 1:
+ printk(KERN_NULL "<%d>%s%u\n", gts->printk_level,
+ gts->printk_str->src, pbuf[0]);
+ break;
+ case 2:
+ printk(KERN_NULL "<%d>%s%u\n", gts->printk_level,
+ gts->printk_str->src, (int)(*(short *)pbuf));
+ break;
+ case 4:
+ printk(KERN_NULL "<%d>%s%u\n", gts->printk_level,
+ gts->printk_str->src, *(int *)pbuf);
+ break;
+ case 8:
+ printk(KERN_NULL "<%d>%s%llu\n", gts->printk_level,
+ gts->printk_str->src, *(long long *)pbuf);
+ break;
+ default:
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p"
+ "size %d cannot printk.\n",
+ (int)gts->tpe->num,
+ (void *)(CORE_ADDR)gts->tpe->addr,
+ (unsigned int)size);
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ break;
+ }
+ break;
+ case GTP_PRINTK_FORMAT_X:
+ switch (size) {
+ case 1:
+ printk(KERN_NULL "<%d>%s0x%x\n", gts->printk_level,
+ gts->printk_str->src, pbuf[0]);
+ break;
+ case 2:
+ printk(KERN_NULL "<%d>%s0x%x\n", gts->printk_level,
+ gts->printk_str->src, (int)(*(short *)pbuf));
+ break;
+ case 4:
+ printk(KERN_NULL "<%d>%s0x%x\n", gts->printk_level,
+ gts->printk_str->src, *(int *)pbuf);
+ break;
+ case 8:
+ printk(KERN_NULL "<%d>%s0x%llx\n", gts->printk_level,
+ gts->printk_str->src, *(long long *)pbuf);
+ break;
+ default:
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p "
+ "size %d cannot printk.\n",
+ (int)gts->tpe->num,
+ (void *)(CORE_ADDR)gts->tpe->addr,
+ (unsigned int)size);
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ break;
+ }
+ break;
+ case GTP_PRINTK_FORMAT_S:
+ pbuf[GTP_PRINTF_MAX - 1] = '\0';
+ printk("<%d>%s%s\n", gts->printk_level, gts->printk_str->src,
+ pbuf);
+ break;
+ case GTP_PRINTK_FORMAT_B: {
+ size_t i;
+
+ printk(KERN_NULL "<%d>%s", gts->printk_level,
+ gts->printk_str->src);
+ for (i = 0; i < size; i++)
+ printk("%02x", (unsigned int)pbuf[i]);
+ printk("\n");
+ }
+ break;
+ default:
+ printk(KERN_WARNING "gtp_action_printk: id:%d addr:%p "
+ "printk format %u is not support.\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr,
+ gts->printk_format);
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+ return -1;
+ break;
+ }
+
+ gts->printk_str = gts->printk_str->next;
+
+ return 0;
+}
+
+static int
+gtp_action_memory_read(struct gtp_trace_s *gts, int reg, CORE_ADDR addr,
+ size_t size)
+{
+ char *tmp;
+ struct gtp_frame_mem *fm;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+#endif
+
+ if (reg >= 0)
+ addr += (CORE_ADDR) gtp_action_reg_read(gts->regs,
+ gts->tpe, reg);
+ if (gts->tpe->reason != gtp_stop_normal)
+ return -1;
+
+ if (gts->next == NULL) {
+ if (gtp_action_head(gts))
+ return -1;
+ }
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ GTP_FRAME_RINGBUFFER_ALLOC(GTP_FRAME_MEM_SIZE + size);
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#ifdef GTP_RB
+ tmp = gtp_rb_alloc(gts->next, GTP_FRAME_MEM_SIZE + size, gts->id);
+#endif
+#ifdef GTP_FRAME_SIMPLE
+ tmp = gtp_frame_alloc(GTP_FRAME_MEM_SIZE + size);
+#endif
+ if (!tmp) {
+ gts->tpe->reason = gtp_stop_frame_full;
+ return -1;
+ }
+#ifdef GTP_FRAME_SIMPLE
+ *gts->next = tmp;
+#endif
+#endif
+
+ FID(tmp) = FID_MEM;
+ tmp += FID_SIZE;
+
+#ifdef GTP_FRAME_SIMPLE
+ gts->next = (char **)tmp;
+ *gts->next = NULL;
+ tmp += sizeof(char *);
+#endif
+
+ fm = (struct gtp_frame_mem *)tmp;
+ fm->addr = addr;
+ fm->size = size;
+ tmp += sizeof(struct gtp_frame_mem);
+
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_action_memory_read: id:%d addr:%p %p %u\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr,
+ (void *)addr, (unsigned int)size);
+#endif
+
+ if (probe_kernel_read(tmp, (void *)addr, size)) {
+ gts->tpe->reason = gtp_stop_efault;
+#ifdef GTP_FRAME_SIMPLE
+ memset(tmp, 0, size);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_discard_commit(gtp_frame, rbe);
+#endif
+#ifdef GTP_RB
+ GTP_RB_RELEASE(gts->next);
+#endif
+ printk(KERN_WARNING "gtp_action_memory_read: id:%d addr:%p "
+ "read %p %u get error.\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr,
+ (void *)addr, (unsigned int)size);
+ return -1;
+ }
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_unlock_commit(gtp_frame, rbe);
+#endif
+
+ return 0;
+}
+
+static int
+gtp_action_r(struct gtp_trace_s *gts, struct action *ae)
+{
+ struct pt_regs *regs;
+ char *tmp;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+#endif
+
+ if (gts->next == NULL) {
+ if (gtp_action_head(gts))
+ return -1;
+ }
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ GTP_FRAME_RINGBUFFER_ALLOC(GTP_FRAME_REG_SIZE);
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#ifdef GTP_RB
+ tmp = gtp_rb_alloc(gts->next, GTP_FRAME_REG_SIZE, gts->id);
+#endif
+#ifdef GTP_FRAME_SIMPLE
+ tmp = gtp_frame_alloc(GTP_FRAME_REG_SIZE);
+#endif
+ if (!tmp) {
+ gts->tpe->reason = gtp_stop_frame_full;
+ return -1;
+ }
+#ifdef GTP_FRAME_SIMPLE
+ *gts->next = tmp;
+#endif
+#endif
+
+ FID(tmp) = FID_REG;
+ tmp += FID_SIZE;
+
+#ifdef GTP_FRAME_SIMPLE
+ gts->next = (char **)tmp;
+ *gts->next = NULL;
+ tmp += sizeof(char *);
+#endif
+
+ regs = (struct pt_regs *)tmp;
+
+ memcpy(regs, gts->regs, sizeof(struct pt_regs));
+#ifdef CONFIG_X86_32
+ regs->sp = (unsigned long)®s->sp;
+#endif /* CONFIG_X86_32 */
+
+ if (gts->ri)
+ GTP_REGS_PC(regs) = (CORE_ADDR)gts->ri->ret_addr;
+#ifdef CONFIG_X86
+ else if (!gts->step)
+ GTP_REGS_PC(regs) -= 1;
+#endif /* CONFIG_X86 */
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_unlock_commit(gtp_frame, rbe);
+#endif
+
+ return 0;
+}
+
+static struct gtp_var *
+gtp_gtp_var_array_find(unsigned int num)
+{
+ struct gtp_var *ret;
+
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_gtp_var_array_find: num:%u %u %u\n",
+ gtp_var_head, gtp_var_tail, num);
+#endif
+
+ if (num < gtp_var_head || num > gtp_var_tail)
+ return NULL;
+
+ ret = gtp_var_array[num - gtp_var_head];
+ if (ret->per_cpu)
+ ret = ret->per_cpu[smp_processor_id()];
+
+ return ret;
+}
+
+static uint64_t
+gtp_get_var_special(struct gtp_trace_s *gts, unsigned int num)
+{
+ uint64_t ret;
+
+ switch (num) {
+ case GTP_VAR_CURRENT_TASK_ID:
+ if (gts->ri)
+ ret = (uint64_t)(CORE_ADDR)gts->ri->task;
+ else
+ ret = (uint64_t)(CORE_ADDR)get_current();
+ break;
+ case GTP_VAR_CURRENT_TASK_PID_ID:
+ if (gts->ri)
+ ret = (uint64_t)(CORE_ADDR)gts->ri->task->pid;
+ else
+ ret = (uint64_t)(CORE_ADDR)get_current()->pid;
+ break;
+ case GTP_VAR_CURRENT_THREAD_INFO_ID:
+ ret = (uint64_t)(CORE_ADDR)current_thread_info();
+ break;
+ case GTP_VAR_CLOCK_ID:
+ ret = (uint64_t)GTP_LOCAL_CLOCK;
+ break;
+ case GTP_VAR_COOKED_CLOCK_ID:
+ ret = (uint64_t)(__get_cpu_var(local_clock_current)
+ - __get_cpu_var(local_clock_offset));
+ break;
+#ifdef CONFIG_X86
+ case GTP_VAR_RDTSC_ID:
+ {
+ unsigned long long a;
+ rdtscll(a);
+ ret = (uint64_t)a;
+ }
+ break;
+ case GTP_VAR_COOKED_RDTSC_ID:
+ ret = (uint64_t)(__get_cpu_var(rdtsc_current)
+ - __get_cpu_var(rdtsc_offset));
+ break;
+#endif
+ case GTP_VAR_CPU_ID:
+ ret = (uint64_t)(CORE_ADDR)smp_processor_id();
+ break;
+ case GTP_VAR_CPU_NUMBER_ID:
+ ret = (uint64_t)gtp_cpu_number;
+ break;
+ case GTP_VAR_PRINTK_TMP_ID:
+ ret = gts->printk_tmp;
+ break;
+ case GTP_VAR_DUMP_STACK_ID:
+ printk(KERN_NULL "gtp %d %p:", (int)gts->tpe->num,
+ (void *)(CORE_ADDR)gts->tpe->addr);
+ dump_stack();
+ ret = 0;
+ break;
+ case GTP_VAR_XTIME_SEC_ID:
+ if (gts->xtime.tv_sec == 0 && gts->xtime.tv_nsec == 0)
+ getnstimeofday(>s->xtime);
+ ret = (uint64_t)gts->xtime.tv_sec;
+ break;
+ case GTP_VAR_XTIME_NSEC_ID:
+ if (gts->xtime.tv_sec == 0 && gts->xtime.tv_nsec == 0)
+ getnstimeofday(>s->xtime);
+ ret = (uint64_t)gts->xtime.tv_nsec;
+ break;
+ case GTP_VAR_HARDIRQ_COUNT_ID:
+ ret = (uint64_t)hardirq_count();
+ break;
+ case GTP_VAR_SOFTIRQ_COUNT_ID:
+ ret = (uint64_t)softirq_count();
+ break;
+ case GTP_VAR_IRQ_COUNT_ID:
+ ret = (uint64_t)irq_count();
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gtp_set_var_special(struct gtp_trace_s *gts, unsigned int num, ULONGEST val)
+{
+ switch (num) {
+ case GTP_VAR_PRINTK_TMP_ID:
+ gts->printk_tmp = val;
+ break;
+ case GTP_VAR_PRINTK_LEVEL_ID:
+ gts->printk_level = (unsigned int)val;
+ break;
+ case GTP_VAR_PRINTK_FORMAT_ID:
+ gts->printk_format = (unsigned int)val;
+ break;
+ case GTP_VAR_PC_PE_EN_ID:
+ gtp_pc_pe_en((int)val);
+ break;
+ }
+}
+
+static int
+gtp_collect_var_special(struct gtp_trace_s *gts, unsigned int num)
+{
+ struct gtp_frame_var *fvar;
+ char *tmp;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+#endif
+
+ if (gts->next == NULL) {
+ if (gtp_action_head(gts))
+ return -1;
+ }
+
+ if (GTP_VAR_AUTO_TRACEV(num))
+ return 0;
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ GTP_FRAME_RINGBUFFER_ALLOC(GTP_FRAME_VAR_SIZE);
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#ifdef GTP_RB
+ tmp = gtp_rb_alloc(gts->next, GTP_FRAME_VAR_SIZE, gts->id);
+#endif
+#ifdef GTP_FRAME_SIMPLE
+ tmp = gtp_frame_alloc(GTP_FRAME_VAR_SIZE);
+#endif
+ if (!tmp) {
+ gts->tpe->reason = gtp_stop_frame_full;
+ return -1;
+ }
+#ifdef GTP_FRAME_SIMPLE
+ *gts->next = tmp;
+#endif
+#endif
+
+ FID(tmp) = FID_VAR;
+ tmp += FID_SIZE;
+
+#ifdef GTP_FRAME_SIMPLE
+ gts->next = (char **)tmp;
+ *gts->next = NULL;
+ tmp += sizeof(char *);
+#endif
+
+ fvar = (struct gtp_frame_var *) tmp;
+ fvar->num = num;
+ fvar->val = gtp_get_var_special(gts, num);
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_unlock_commit(gtp_frame, rbe);
+#endif
+
+ return 0;
+}
+
+uint64_t
+gtp_get_var(struct gtp_trace_s *gts, struct gtp_var *tve)
+{
+#ifdef CONFIG_PERF_EVENTS
+ if (tve->ptid == pe_tv_val || tve->ptid == pe_tv_enabled
+ || tve->ptid == pe_tv_running) {
+ tve->pts->val = perf_event_read_value(tve->pts->event,
+ &(tve->pts->enabled),
+ &(tve->pts->running));
+ switch (tve->ptid) {
+ case pe_tv_val:
+ return (uint64_t)(tve->pts->val);
+ break;
+ case pe_tv_enabled:
+ return (uint64_t)(tve->pts->enabled);
+ break;
+ case pe_tv_running:
+ return (uint64_t)(tve->pts->running);
+ break;
+ default:
+ return 0;
+ break;
+ }
+ }
+#endif
+
+ return tve->val;
+}
+
+static int
+gtp_collect_var(struct gtp_trace_s *gts, struct gtp_var *tve)
+{
+ struct gtp_frame_var *fvar;
+ char *tmp;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+#endif
+
+ if (gts->next == NULL) {
+ if (gtp_action_head(gts))
+ return -1;
+ }
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ GTP_FRAME_RINGBUFFER_ALLOC(GTP_FRAME_VAR_SIZE);
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_RB)
+#ifdef GTP_RB
+ tmp = gtp_rb_alloc(gts->next, GTP_FRAME_VAR_SIZE, gts->id);
+#endif
+#ifdef GTP_FRAME_SIMPLE
+ tmp = gtp_frame_alloc(GTP_FRAME_VAR_SIZE);
+#endif
+ if (!tmp) {
+ gts->tpe->reason = gtp_stop_frame_full;
+ return -1;
+ }
+#ifdef GTP_FRAME_SIMPLE
+ *gts->next = tmp;
+#endif
+#endif
+
+ FID(tmp) = FID_VAR;
+ tmp += FID_SIZE;
+
+#ifdef GTP_FRAME_SIMPLE
+ gts->next = (char **)tmp;
+ *gts->next = NULL;
+ tmp += sizeof(char *);
+#endif
+
+ fvar = (struct gtp_frame_var *) tmp;
+ fvar->num = tve->num;
+ fvar->val = gtp_get_var(gts, tve);
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_unlock_commit(gtp_frame, rbe);
+#endif
+
+ return 0;
+}
+
+#define STACK_MAX 32
+static DEFINE_PER_CPU(ULONGEST[STACK_MAX], action_x_stack);
+
+static int
+gtp_action_x(struct gtp_trace_s *gts, struct action *ae)
+{
+ int ret = 0;
+ unsigned int pc = 0, sp = 0;
+ ULONGEST top = 0;
+ int arg;
+ union {
+ union {
+ uint8_t bytes[1];
+ uint8_t val;
+ } u8;
+ union {
+ uint8_t bytes[2];
+ uint16_t val;
+ } u16;
+ union {
+ uint8_t bytes[4];
+ uint32_t val;
+ } u32;
+ union {
+ uint8_t bytes[8];
+ ULONGEST val;
+ } u64;
+ } cnv;
+ uint8_t *ebuf = ae->u.exp.buf;
+ int psize = GTP_PRINTF_MAX;
+ char *pbuf = __get_cpu_var(gtp_printf);
+ ULONGEST *stack = __get_cpu_var(action_x_stack);
+
+ if (unlikely(ae->u.exp.need_var_lock))
+ spin_lock(>p_var_lock);
+
+ while (1) {
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_parse_x: cmd %x\n", ebuf[pc]);
+#endif
+
+ switch (ebuf[pc++]) {
+ /* add */
+ case 0x02:
+ top += stack[--sp];
+ break;
+
+ case op_check_add:
+ if (sp)
+ top += stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* sub */
+ case 0x03:
+ top = stack[--sp] - top;
+ break;
+
+ case op_check_sub:
+ if (sp)
+ top = stack[--sp] - top;
+ else
+ goto code_error_out;
+ break;
+
+ /* mul */
+ case 0x04:
+ top *= stack[--sp];
+ break;
+
+ case op_check_mul:
+ if (sp)
+ top *= stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+#ifndef CONFIG_MIPS
+ /* div_signed */
+ case 0x05:
+ if (top) {
+ LONGEST l = (LONGEST) stack[--sp];
+ do_div(l, (LONGEST) top);
+ top = l;
+ } else
+ goto code_error_out;
+ break;
+
+ case op_check_div_signed:
+ if (top && sp) {
+ LONGEST l = (LONGEST) stack[--sp];
+ do_div(l, (LONGEST) top);
+ top = l;
+ } else
+ goto code_error_out;
+ break;
+
+ /* div_unsigned */
+ case 0x06:
+ if (top) {
+ ULONGEST ul = stack[--sp];
+ do_div(ul, top);
+ top = ul;
+ } else
+ goto code_error_out;
+ break;
+
+ case op_check_div_unsigned:
+ if (top && sp) {
+ ULONGEST ul = stack[--sp];
+ do_div(ul, top);
+ top = ul;
+ } else
+ goto code_error_out;
+ break;
+
+ /* rem_signed */
+ case 0x07:
+ if (top) {
+ LONGEST l1 = (LONGEST) stack[--sp];
+ LONGEST l2 = (LONGEST) top;
+ top = do_div(l1, l2);
+ } else
+ goto code_error_out;
+ break;
+
+ case op_check_rem_signed:
+ if (top && sp) {
+ LONGEST l1 = (LONGEST) stack[--sp];
+ LONGEST l2 = (LONGEST) top;
+ top = do_div(l1, l2);
+ } else
+ goto code_error_out;
+ break;
+
+ /* rem_unsigned */
+ case 0x08:
+ if (top) {
+ ULONGEST ul1 = stack[--sp];
+ ULONGEST ul2 = top;
+ top = do_div(ul1, ul2);
+ } else
+ goto code_error_out;
+ break;
+
+ case op_check_rem_unsigned:
+ if (top && sp) {
+ ULONGEST ul1 = stack[--sp];
+ ULONGEST ul2 = top;
+ top = do_div(ul1, ul2);
+ } else
+ goto code_error_out;
+ break;
+#endif
+
+ /* lsh */
+ case 0x09:
+ top = stack[--sp] << top;
+ break;
+
+ case op_check_lsh:
+ if (sp)
+ top = stack[--sp] << top;
+ else
+ goto code_error_out;
+ break;
+
+ /* rsh_signed */
+ case 0x0a:
+ top = ((LONGEST) stack[--sp]) >> top;
+ break;
+
+ case op_check_rsh_signed:
+ if (sp)
+ top = ((LONGEST) stack[--sp]) >> top;
+ else
+ goto code_error_out;
+ break;
+
+ /* rsh_unsigned */
+ case 0x0b:
+ top = stack[--sp] >> top;
+ break;
+
+ case op_check_rsh_unsigned:
+ if (sp)
+ top = stack[--sp] >> top;
+ else
+ goto code_error_out;
+ break;
+
+ /* trace */
+ case 0x0c:
+ --sp;
+ if (!gts->tpe->have_printk) {
+ if (gtp_action_memory_read
+ (gts, -1,
+ (CORE_ADDR) stack[sp],
+ (size_t) top))
+ goto out;
+ }
+ top = stack[--sp];
+ break;
+
+ case op_check_trace:
+ if (sp > 1) {
+ if (gtp_action_memory_read
+ (gts, -1, (CORE_ADDR) stack[--sp],
+ (size_t) top)) {
+ /* gtp_action_memory_read will
+ set error status with itself
+ if it got error. */
+ goto out;
+ }
+ top = stack[--sp];
+ } else
+ goto code_error_out;
+ break;
+
+ /* trace_printk */
+ case op_trace_printk:
+ if (gtp_action_printk(gts,
+ (ULONGEST)stack[--sp],
+ (size_t) top))
+ goto out;
+ top = stack[--sp];
+ break;
+
+ /* trace_quick */
+ case 0x0d:
+ if (!gts->tpe->have_printk) {
+ if (gtp_action_memory_read
+ (gts, -1, (CORE_ADDR) top,
+ (size_t) ebuf[pc]))
+ goto out;
+ }
+ pc++;
+ break;
+
+ /* trace_quick_printk */
+ case op_trace_quick_printk:
+ if (gtp_action_printk(gts, (ULONGEST) top,
+ (size_t) ebuf[pc++]))
+ goto out;
+ break;
+
+ /* log_not */
+ case 0x0e:
+ top = !top;
+ break;
+
+ /* bit_and */
+ case 0x0f:
+ top &= stack[--sp];
+ break;
+
+ case op_check_bit_and:
+ if (sp)
+ top &= stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* bit_or */
+ case 0x10:
+ top |= stack[--sp];
+ break;
+
+ case op_check_bit_or:
+ if (sp)
+ top |= stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* bit_xor */
+ case 0x11:
+ top ^= stack[--sp];
+ break;
+
+ case op_check_bit_xor:
+ if (sp)
+ top ^= stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* bit_not */
+ case 0x12:
+ top = ~top;
+ break;
+
+ /* equal */
+ case 0x13:
+ top = (stack[--sp] == top);
+ break;
+
+ case op_check_equal:
+ if (sp)
+ top = (stack[--sp] == top);
+ else
+ goto code_error_out;
+ break;
+
+ /* less_signed */
+ case 0x14:
+ top = (((LONGEST) stack[--sp])
+ < ((LONGEST) top));
+ break;
+
+ case op_check_less_signed:
+ if (sp)
+ top = (((LONGEST) stack[--sp])
+ < ((LONGEST) top));
+ else
+ goto code_error_out;
+ break;
+
+ /* less_unsigned */
+ case 0x15:
+ top = (stack[--sp] < top);
+ break;
+
+ case op_check_less_unsigned:
+ if (sp)
+ top = (stack[--sp] < top);
+ else
+ goto code_error_out;
+ break;
+
+ /* ext */
+ case 0x16:
+ arg = ebuf[pc++];
+ if (arg < (sizeof(LONGEST)*8)) {
+ LONGEST mask = 1 << (arg - 1);
+ top &= ((LONGEST) 1 << arg) - 1;
+ top = (top ^ mask) - mask;
+ }
+ break;
+
+ /* ref8 */
+ case 0x17:
+ if (probe_kernel_read
+ (cnv.u8.bytes,
+ (void *)(CORE_ADDR)top, 1))
+ goto code_error_out;
+ top = (ULONGEST) cnv.u8.val;
+ break;
+
+ /* ref16 */
+ case 0x18:
+ if (probe_kernel_read
+ (cnv.u16.bytes,
+ (void *)(CORE_ADDR)top, 2))
+ goto code_error_out;
+ top = (ULONGEST) cnv.u16.val;
+ break;
+
+ /* ref32 */
+ case 0x19:
+ if (probe_kernel_read
+ (cnv.u32.bytes,
+ (void *)(CORE_ADDR)top, 4))
+ goto code_error_out;
+ top = (ULONGEST) cnv.u32.val;
+ break;
+
+ /* ref64 */
+ case 0x1a:
+ if (probe_kernel_read
+ (cnv.u64.bytes,
+ (void *)(CORE_ADDR)top, 8))
+ goto code_error_out;
+ top = (ULONGEST) cnv.u64.val;
+ break;
+
+ /* if_goto */
+ case 0x20:
+ if (top)
+ pc = (ebuf[pc] << 8)
+ + (ebuf[pc + 1]);
+ else
+ pc += 2;
+ /* pop */
+ top = stack[--sp];
+ break;
+
+ case op_check_if_goto:
+ if (top)
+ pc = (ebuf[pc] << 8)
+ + (ebuf[pc + 1]);
+ else
+ pc += 2;
+ /* pop */
+ if (sp)
+ top = stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* goto */
+ case 0x21:
+ pc = (ebuf[pc] << 8) + (ebuf[pc + 1]);
+ break;
+
+ /* const8 */
+ case 0x22:
+ stack[sp++] = top;
+ top = ebuf[pc++];
+ break;
+
+ /* const16 */
+ case 0x23:
+ stack[sp++] = top;
+ top = ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ break;
+
+ /* const32 */
+ case 0x24:
+ stack[sp++] = top;
+ top = ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ break;
+
+ /* const64 */
+ case 0x25:
+ stack[sp++] = top;
+ top = ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ top = (top << 8) + ebuf[pc++];
+ break;
+
+ /* reg */
+ case 0x26:
+ stack[sp++] = top;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+ top = gtp_action_reg_read(gts->regs, gts->tpe,
+ arg);
+ if (gts->tpe->reason != gtp_stop_normal)
+ goto error_out;
+ break;
+
+ /* end */
+ case 0x27:
+ if (gts->run)
+ *(gts->run) = (int)top;
+ goto out;
+ break;
+
+ /* dup */
+ case 0x28:
+ stack[sp++] = top;
+ break;
+
+ /* pop */
+ case 0x29:
+ top = stack[--sp];
+ break;
+
+ case op_check_pop:
+ if (sp)
+ top = stack[--sp];
+ else
+ goto code_error_out;
+ break;
+
+ /* zero_ext */
+ case 0x2a:
+ arg = ebuf[pc++];
+ if (arg < (sizeof(LONGEST)*8))
+ top &= ((LONGEST) 1 << arg) - 1;
+ break;
+
+ /* swap */
+ case 0x2b:
+ stack[sp] = top;
+ top = stack[sp - 1];
+ stack[sp - 1] = stack[sp];
+ break;
+
+ case op_check_swap:
+ if (sp) {
+ stack[sp] = top;
+ top = stack[sp - 1];
+ stack[sp - 1] = stack[sp];
+ } else
+ goto code_error_out;
+ break;
+
+ /* getv */
+ case 0x2c:
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ stack[sp++] = top;
+
+ top = gtp_get_var(gts, gtp_gtp_var_array_find(arg));
+ break;
+
+ /* getv_sepecial */
+ case op_special_getv:
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+ stack[sp++] = top;
+ top = gtp_get_var_special(gts, arg);
+ break;
+
+ /* setv */
+ case 0x2d: {
+ struct gtp_var *tve;
+
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ tve = gtp_gtp_var_array_find(arg);
+#ifdef CONFIG_PERF_EVENTS
+ if (tve->ptid == pe_tv_en)
+ gtp_pe_set_en(tve->pts, (int)top);
+ else if (tve->ptid == pe_tv_val)
+ perf_event_set(tve->pts->event,
+ (u64)top);
+#endif
+ tve->val = (uint64_t)top;
+ }
+ break;
+
+ /* setv_sepecial */
+ case op_special_setv:
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+ gtp_set_var_special(gts, arg, top);
+ break;
+
+ /* tracev */
+ case 0x2e:
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (gtp_collect_var(gts, gtp_gtp_var_array_find(arg))) {
+ /* gtp_collect_var will set error
+ status with itself if it got error. */
+ goto out;
+ }
+ break;
+
+ /* tracev_special */
+ case op_special_tracev:
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+ gtp_collect_var_special(gts, arg);
+ break;
+
+ /* tracev_printk */
+ case op_tracev_printk: {
+ uint64_t u64;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg))
+ u64 = gtp_get_var(gts,
+ gtp_gtp_var_array_find
+ (arg));
+ else
+ u64 = gtp_get_var_special(gts, arg);
+ if (gtp_action_printk(gts, u64, 0)) {
+ /* gtp_collect_var will set error status
+ with itself if it got error. */
+ goto out;
+ }
+ }
+ break;
+ }
+
+ if (ae->type != 'X' && unlikely(sp > STACK_MAX - 5)) {
+ printk(KERN_WARNING "gtp_action_x: stack overflow.\n");
+ gts->tpe->reason
+ = gtp_stop_agent_expr_stack_overflow;
+ goto error_out;
+ }
+ }
+code_error_out:
+ gts->tpe->reason = gtp_stop_agent_expr_code_error;
+error_out:
+ ret = -1;
+ printk(KERN_WARNING "gtp_action_x: tracepoint %d addr:%p"
+ "action X get error in pc %u.\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr, pc);
+out:
+ if (unlikely(psize != GTP_PRINTF_MAX)) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ printk("%s", pbuf - (GTP_PRINTF_MAX - psize));
+ local_irq_restore(flags);
+ }
+ if (unlikely(ae->u.exp.need_var_lock))
+ spin_unlock(>p_var_lock);
+ return ret;
+}
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+static void
+gtp_handler_wakeup(void)
+{
+#ifdef GTP_FTRACE_RING_BUFFER
+ FID_TYPE eid = FID_END;
+ ring_buffer_write(gtp_frame, FID_SIZE, &eid);
+#endif
+
+ if (atomic_read(>pframe_pipe_wq_v) > 0) {
+ atomic_dec(>pframe_pipe_wq_v);
+ add_preempt_count(HARDIRQ_OFFSET);
+ tasklet_schedule(>pframe_pipe_wq_tasklet);
+ sub_preempt_count(HARDIRQ_OFFSET);
+ }
+}
+#endif
+
+static void
+gtp_handler(struct gtp_trace_s *gts)
+{
+ struct action *ae;
+
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_handler: tracepoint %d %p\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr);
+#endif
+
+ if (gts->tpe->kpreg == 0)
+ return;
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (!gtp_pipe_trace && get_current()->pid == gtp_gtpframe_pipe_pid)
+ return;
+#endif
+
+ if (gts->tpe->no_self_trace
+ && (get_current()->pid == gtp_gtp_pid
+ || get_current()->pid == gtp_gtpframe_pid)) {
+ return;
+ }
+
+ if (gts->tpe->have_printk) {
+ gts->printk_level = 8;
+ gts->printk_str = gts->tpe->printk_str;
+ }
+
+ /* Condition. */
+ if (gts->tpe->cond) {
+ int run;
+
+ gts->run = &run;
+ if (gtp_action_x(gts, gts->tpe->cond))
+ goto tpe_stop;
+ if (!run)
+ return;
+ }
+
+ gts->run = NULL;
+
+ /* Pass. */
+ if (!gts->tpe->nopass) {
+ if (atomic_dec_return(>s->tpe->current_pass) < 0)
+ goto tpe_stop;
+ }
+
+ /* Handle actions. */
+ if (gts->step)
+ ae = gts->tpe->step_action_list;
+ else
+ ae = gts->tpe->action_list;
+ for (; ae; ae = ae->next) {
+ switch (ae->type) {
+ case 'R':
+ if (gtp_action_r(gts, ae))
+ goto tpe_stop;
+ break;
+ case 'X':
+ case 0xff:
+ if (gtp_action_x(gts, ae))
+ goto tpe_stop;
+ break;
+ case 'M':
+ if (gtp_action_memory_read(gts, ae->u.m.regnum,
+ ae->u.m.offset,
+ ae->u.m.size))
+ goto tpe_stop;
+ break;
+ }
+ }
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gts->next) {
+#ifdef GTP_RB
+ GTP_RB_UNLOCK(gts->next);
+#endif
+ gtp_handler_wakeup();
+ }
+#endif
+
+ return;
+
+tpe_stop:
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gts->next) {
+#ifdef GTP_RB
+ GTP_RB_UNLOCK(gts->next);
+#endif
+ gtp_handler_wakeup();
+ }
+#endif
+ gts->tpe->kpreg = 0;
+ add_preempt_count(HARDIRQ_OFFSET);
+ tasklet_schedule(>s->tpe->tasklet);
+ sub_preempt_count(HARDIRQ_OFFSET);
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_handler: tracepoint %d %p stop.\n",
+ (int)gts->tpe->num, (void *)(CORE_ADDR)gts->tpe->addr);
+#endif
+ return;
+}
+
+static DEFINE_PER_CPU(int, gtp_handler_began);
+
+#ifdef CONFIG_X86
+static int gtp_access_cooked_rdtsc;
+#endif
+static int gtp_access_cooked_clock;
+#ifdef CONFIG_PERF_EVENTS
+static int gtp_have_pc_pe;
+#endif
+
+static void
+gtp_handler_begin(void)
+{
+ if (!__get_cpu_var(gtp_handler_began)) {
+#ifdef CONFIG_X86
+ if (gtp_access_cooked_rdtsc) {
+ u64 a;
+
+ rdtscll(a);
+ __get_cpu_var(rdtsc_current) = a;
+ }
+#endif
+
+ if (gtp_access_cooked_clock)
+ __get_cpu_var(local_clock_current) = GTP_LOCAL_CLOCK;
+
+#ifdef CONFIG_PERF_EVENTS
+ if (gtp_have_pc_pe)
+ pc_pe_list_disable();
+#endif
+
+ __get_cpu_var(gtp_handler_began) = 1;
+ }
+}
+
+static void
+gtp_handler_end(void)
+{
+ if (__get_cpu_var(gtp_handler_began)) {
+#ifdef CONFIG_PERF_EVENTS
+ if (gtp_have_pc_pe)
+ pc_pe_list_enable();
+#endif
+
+ if (gtp_access_cooked_clock) {
+ __get_cpu_var(local_clock_offset) += GTP_LOCAL_CLOCK
+ - __get_cpu_var(local_clock_current);
+ __get_cpu_var(local_clock_current) = 0;
+ }
+
+#ifdef CONFIG_X86
+ if (gtp_access_cooked_rdtsc) {
+ u64 a;
+
+ rdtscll(a);
+ __get_cpu_var(rdtsc_offset) += a
+ - __get_cpu_var(rdtsc_current);
+ __get_cpu_var(rdtsc_current) = 0;
+ }
+#endif
+
+ __get_cpu_var(gtp_handler_began) = 0;
+ }
+}
+
+static inline void
+gtp_kp_pre_handler_1(struct kprobe *p, struct pt_regs *regs)
+{
+ struct kretprobe *kp;
+ struct gtp_trace_s gts;
+
+ memset(>s, 0, sizeof(struct gtp_trace_s));
+ kp = container_of(p, struct kretprobe, kp);
+ gts.tpe = container_of(kp, struct gtp_entry, kp);
+ gts.regs = regs;
+
+ gtp_handler(>s);
+}
+
+static inline void
+gtp_kp_post_handler_1(struct kprobe *p, struct pt_regs *regs,
+ unsigned long flags)
+{
+ struct kretprobe *kp;
+ struct gtp_entry *tpe;
+ struct gtp_trace_s gts;
+
+ kp = container_of(p, struct kretprobe, kp);
+ tpe = container_of(kp, struct gtp_entry, kp);
+
+ memset(>s, 0, sizeof(struct gtp_trace_s));
+ gts.tpe = tpe;
+ gts.regs = regs;
+ gts.step = 1;
+
+ gtp_handler(>s);
+}
+
+static inline void
+gtp_kp_ret_handler_1(struct kretprobe_instance *ri, struct pt_regs *regs)
+{
+ struct gtp_trace_s gts;
+
+ memset(>s, 0, sizeof(struct gtp_trace_s));
+ gts.tpe = container_of(ri->rp, struct gtp_entry, kp);
+ gts.regs = regs;
+ gts.ri = ri;
+
+ gtp_handler(>s);
+}
+
+static int
+gtp_kp_pre_handler_plus_step(struct kprobe *p, struct pt_regs *regs)
+{
+ gtp_handler_begin();
+
+ gtp_kp_pre_handler_1(p, regs);
+
+ return 0;
+}
+
+static int
+gtp_kp_pre_handler_plus(struct kprobe *p, struct pt_regs *regs)
+{
+ gtp_handler_begin();
+
+ gtp_kp_pre_handler_1(p, regs);
+
+ gtp_handler_end();
+
+ return 0;
+}
+
+static int
+gtp_kp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ gtp_kp_pre_handler_1(p, regs);
+
+ return 0;
+}
+
+/* Only available when tpe->step is true. */
+
+static void
+gtp_kp_post_handler_plus(struct kprobe *p, struct pt_regs *regs,
+ unsigned long flags)
+{
+ gtp_kp_post_handler_1(p, regs, flags);
+
+ gtp_handler_end();
+}
+
+/* Only available when tpe->step is true. */
+
+static void
+gtp_kp_post_handler(struct kprobe *p, struct pt_regs *regs,
+ unsigned long flags)
+{
+ gtp_kp_post_handler_1(p, regs, flags);
+}
+
+static int
+gtp_kp_ret_handler_plus(struct kretprobe_instance *ri, struct pt_regs *regs)
+{
+ gtp_handler_begin();
+
+ gtp_kp_ret_handler_1(ri, regs);
+
+ gtp_handler_end();
+
+ return 0;
+}
+
+static int
+gtp_kp_ret_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
+{
+ gtp_kp_ret_handler_1(ri, regs);
+
+ return 0;
+}
+
+static struct action *
+gtp_action_alloc(char type)
+{
+ struct action *ret;
+
+ ret = (struct action *)kcalloc(1, sizeof (struct action), GFP_KERNEL);
+ if (ret)
+ ret->type = type;
+
+ return ret;
+}
+
+static void
+gtp_action_release(struct action *ae)
+{
+ struct action *ae2;
+
+ while (ae) {
+ ae2 = ae;
+ ae = ae->next;
+ /* Release ae2. */
+ switch (ae2->type) {
+ case 'X':
+ case 0xff:
+ kfree(ae2->u.exp.buf);
+ break;
+ }
+ kfree(ae2);
+ }
+}
+
+static void
+gtp_src_release(struct gtpsrc *src)
+{
+ struct gtpsrc *src2;
+
+ while (src) {
+ src2 = src;
+ src = src->next;
+ kfree(src2->src);
+ kfree(src2);
+ }
+}
+
+static void
+gtp_stop(struct work_struct *work)
+{
+ struct gtp_entry *tpe = container_of(work,
+ struct gtp_entry, work);
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_stop: tracepoint %d %p\n", (int)tpe->num,
+ (void *)(CORE_ADDR)tpe->addr);
+#endif
+
+ if (tpe->is_kretprobe)
+ unregister_kretprobe(&tpe->kp);
+ else
+ unregister_kprobe(&tpe->kp.kp);
+}
+
+static struct gtp_entry *
+gtp_list_add(ULONGEST num, ULONGEST addr)
+{
+ struct gtp_entry *ret = kcalloc(1, sizeof(struct gtp_entry),
+ GFP_KERNEL);
+
+ if (!ret)
+ goto out;
+ memset(ret, '\0', sizeof(struct gtp_entry));
+ ret->num = num;
+ ret->addr = addr;
+ ret->kp.kp.addr = (kprobe_opcode_t *) (CORE_ADDR)addr;
+ INIT_WORK(&ret->work, gtp_stop);
+ ret->have_printk = 0;
+
+ /* Add to gtp_list. */
+ ret->next = gtp_list;
+ gtp_list = ret;
+
+out:
+ return ret;
+}
+
+static struct gtp_entry *
+gtp_list_find(ULONGEST num, ULONGEST addr)
+{
+ struct gtp_entry *tpe;
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ if (tpe->num == num && tpe->addr == addr)
+ return tpe;
+ }
+
+ return NULL;
+}
+
+/* If more than one gtp entry have same num, return NULL. */
+
+static struct gtp_entry *
+gtp_list_find_without_addr(ULONGEST num)
+{
+ struct gtp_entry *tpe, *ret = NULL;
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ if (tpe->num == num) {
+ if (ret)
+ return NULL;
+ else
+ ret = tpe;
+ }
+ }
+
+ return ret;
+}
+
+static void
+gtp_list_release(void)
+{
+ struct gtp_entry *tpe;
+
+ while (gtp_list) {
+ tpe = gtp_list;
+ gtp_list = gtp_list->next;
+ gtp_action_release(tpe->cond);
+ gtp_action_release(tpe->action_list);
+ gtp_src_release(tpe->src);
+ gtp_src_release(tpe->action_cmd);
+ kfree(tpe);
+ }
+
+ current_gtp = NULL;
+ current_gtp_action_cmd = NULL;
+ current_gtp_src = NULL;
+}
+
+#ifdef GTP_FTRACE_RING_BUFFER
+static void
+gtp_frame_iter_open(void)
+{
+ int cpu;
+
+
+ for_each_online_cpu(cpu)
+ gtp_frame_iter[cpu] = ring_buffer_read_prepare(gtp_frame, cpu);
+ ring_buffer_read_prepare_sync();
+ for_each_online_cpu(cpu) {
+ ring_buffer_read_start(gtp_frame_iter[cpu]);
+ }
+}
+
+static void
+gtp_frame_iter_reset(void)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu)
+ ring_buffer_iter_reset(gtp_frame_iter[cpu]);
+ gtp_frame_current_num = -1;
+}
+
+static int
+gtp_frame_iter_peek_head(void)
+{
+ int cpu;
+ int ret = -1;
+ u64 min = 0;
+
+ for_each_online_cpu(cpu) {
+ struct ring_buffer_event *rbe;
+ char *tmp;
+ u64 ts;
+
+ while (1) {
+ rbe = ring_buffer_iter_peek(gtp_frame_iter[cpu], &ts);
+ if (rbe == NULL)
+ break;
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ break;
+ ring_buffer_read(gtp_frame_iter[cpu], NULL);
+ }
+
+ if (rbe) {
+ if ((min && ts < min) || !min) {
+ min = ts;
+ ret = cpu;
+ }
+ }
+ }
+
+ if (ret < 0)
+ gtp_frame_current_num = -1;
+ else
+ gtp_frame_current_num++;
+ return ret;
+}
+
+static void
+gtp_frame_iter_close(void)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ if (gtp_frame_iter[cpu]) {
+ ring_buffer_read_finish(gtp_frame_iter[cpu]);
+ gtp_frame_iter[cpu] = NULL;
+ }
+ }
+}
+#endif
+
+static void
+gtp_frame_reset(void)
+{
+ gtp_frame_current_num = -1;
+#ifdef GTP_FRAME_SIMPLE
+ gtp_frame_r_start = gtp_frame;
+ gtp_frame_w_start = gtp_frame;
+ gtp_frame_end = gtp_frame + GTP_FRAME_SIZE;
+ gtp_frame_is_circular = 0;
+ gtp_frame_current = NULL;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ gtp_frame_iter_close();
+ if (gtp_frame)
+ ring_buffer_reset(gtp_frame);
+#endif
+#ifdef GTP_RB
+ gtp_rb_reset();
+#endif
+ atomic_set(>p_frame_create, 0);
+ if (gtp_frame_file) {
+ vfree(gtp_frame_file);
+ gtp_frame_file = NULL;
+ gtp_frame_file_size = 0;
+ }
+}
+
+static int
+hex2int(char hex, int *i)
+{
+ if ((hex >= '0') && (hex <= '9')) {
+ *i = hex - '0';
+ return 1;
+ }
+ if ((hex >= 'a') && (hex <= 'f')) {
+ *i = hex - 'a' + 10;
+ return 1;
+ }
+ if ((hex >= 'A') && (hex <= 'F')) {
+ *i = hex - 'A' + 10;
+ return 1;
+ }
+
+ return 0;
+}
+
+static char *
+hex2ulongest(char *pkg, ULONGEST *u64)
+{
+ int i;
+
+ if (u64)
+ *u64 = 0;
+ while (hex2int(pkg[0], &i)) {
+ pkg++;
+ if (u64) {
+ *u64 = (*u64) << 4;
+ *u64 |= i & 0xf;
+ }
+ }
+
+ return pkg;
+}
+
+static char *
+string2hex(char *pkg, char *out)
+{
+ char *ret = out;
+
+ while (pkg[0]) {
+ sprintf(out, "%x", pkg[0]);
+ pkg++;
+ out += 2;
+ }
+
+ return ret;
+}
+
+static char *
+hex2string(char *pkg, char *out)
+{
+ char *ret = out;
+ int i, j;
+
+ while (hex2int(pkg[0], &i) && hex2int(pkg[1], &j)) {
+ out[0] = i * 16 + j;
+ pkg += 2;
+ out += 1;
+ }
+ out[0] = '\0';
+
+ return ret;
+}
+
+static char *
+gtp_strdup(char *begin, char *end)
+{
+ int len;
+ char *ret;
+
+ if (end)
+ len = end - begin;
+ else
+ len = strlen(begin);
+
+ ret = kmalloc(len + 1, GFP_KERNEL);
+ if (ret == NULL)
+ return NULL;
+
+ strncpy(ret, begin, len);
+ ret[len] = '\0';
+
+ return ret;
+}
+
+static void
+gtpro_list_clear(void)
+{
+ struct gtpro_entry *e;
+
+ while (gtpro_list) {
+ e = gtpro_list;
+ gtpro_list = gtpro_list->next;
+ kfree(e);
+ }
+}
+
+static struct gtpro_entry *
+gtpro_list_add(CORE_ADDR start, CORE_ADDR end)
+{
+ struct gtpro_entry *e;
+
+ e = kmalloc(sizeof(struct gtpro_entry), GFP_KERNEL);
+ if (e == NULL)
+ goto out;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpro_list_add: %p %p\n", (void *)start, (void *)end);
+#endif
+
+ e->start = start;
+ e->end = end;
+
+ e->next = gtpro_list;
+ gtpro_list = e;
+
+out:
+ return e;
+}
+
+#ifdef CONFIG_PERF_EVENTS
+static struct gtp_var *
+gtp_var_add(unsigned int num, uint64_t val, char *src,
+ struct gtp_var **per_cpu, int per_cpu_id,
+ enum pe_tv_id ptid, struct pe_tv_s *pts)
+#else
+static struct gtp_var *
+gtp_var_add(unsigned int num, uint64_t val, char *src,
+ struct gtp_var **per_cpu, int per_cpu_id)
+#endif
+{
+ struct gtp_var *var = kcalloc(1, sizeof(struct gtp_var), GFP_KERNEL);
+ if (!var)
+ goto out;
+
+ var->num = num;
+ var->val = val;
+
+ var->src = gtp_strdup(src, NULL);
+ if (var->src == NULL) {
+ kfree(var);
+ var = NULL;
+ goto out;
+ }
+
+ var->per_cpu = per_cpu;
+ if (per_cpu)
+ var->per_cpu[per_cpu_id] = var;
+
+#ifdef CONFIG_PERF_EVENTS
+ var->ptid = ptid;
+ var->pts = pts;
+#endif
+
+ var->next = gtp_var_list;
+ gtp_var_list = var;
+ gtp_var_head = min(var->num, gtp_var_head);
+ gtp_var_tail = max(var->num, gtp_var_tail);
+
+out:
+ return var;
+}
+
+static struct gtp_var *
+gtp_var_find(unsigned int num)
+{
+ struct gtp_var *ret = NULL;
+
+ if (num >= gtp_var_head && num <= gtp_var_tail) {
+ for (ret = gtp_var_list; ret; ret = ret->next) {
+ if (ret->num == num)
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static void
+gtp_var_release(void)
+{
+ struct gtp_var *tve;
+
+ gtp_var_head = GTP_VAR_SPECIAL_MIN;
+ gtp_var_tail = GTP_VAR_SPECIAL_MAX;
+ current_gtp_var = NULL;
+
+ while (gtp_var_list != GTP_VAR_LIST_FIRST) {
+ tve = gtp_var_list;
+ gtp_var_list = gtp_var_list->next;
+
+ if (tve->per_cpu) {
+ struct gtp_var *tve1;
+
+ for (tve1 = gtp_var_list; tve1; tve1 = tve1->next) {
+ if (tve1->per_cpu == tve->per_cpu)
+ tve1->per_cpu = NULL;
+ }
+
+ kfree(tve->per_cpu);
+ }
+
+#ifdef CONFIG_PERF_EVENTS
+ if (tve->pts) {
+ struct gtp_var *tve1;
+
+ for (tve1 = gtp_var_list; tve1; tve1 = tve1->next) {
+ if (tve1->pts == tve->pts) {
+ tve1->pts = NULL;
+ tve1->ptid = pe_tv_unknown;
+ }
+ }
+
+ if (tve->pts->event)
+ perf_event_release_kernel(tve->pts->event);
+ kfree(tve->pts);
+ }
+#endif
+
+ kfree(tve->src);
+ kfree(tve);
+ }
+
+ gtp_start_ignore_error = 0;
+}
+
+static int
+gtp_src_add(char *begin, char *end, struct gtpsrc **src_list)
+{
+ struct gtpsrc *src, *srctail;
+
+ src = kmalloc(sizeof(struct gtpsrc), GFP_KERNEL);
+ if (src == NULL)
+ return -ENOMEM;
+ src->next = NULL;
+ src->src = gtp_strdup(begin, end);
+ if (src->src == NULL) {
+ kfree(src);
+ return -ENOMEM;
+ }
+
+ if (*src_list) {
+ for (srctail = *src_list; srctail->next;
+ srctail = srctail->next)
+ ;
+ srctail->next = src;
+ } else
+ *src_list = src;
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qtstop(void)
+{
+ struct gtp_entry *tpe;
+#ifdef CONFIG_PERF_EVENTS
+ struct gtp_var *tve;
+#endif
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtstop\n");
+#endif
+
+#ifdef FRAME_ALLOC_RECORD
+ printk(KERN_WARNING "frame_alloc_size = %llu, "
+ "frame_alloc_size_hole = %llu\n",
+ frame_alloc_size, frame_alloc_size_hole);
+ frame_alloc_size = 0;
+ frame_alloc_size_hole = 0;
+#endif
+
+ if (!gtp_start)
+ return -EBUSY;
+
+ flush_workqueue(gtp_wq);
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ if (tpe->kpreg) {
+ if (tpe->is_kretprobe)
+ unregister_kretprobe(&tpe->kp);
+ else
+ unregister_kprobe(&tpe->kp.kp);
+ tpe->kpreg = 0;
+ }
+ tasklet_kill(&tpe->tasklet);
+ }
+
+#ifdef CONFIG_PERF_EVENTS
+ for (tve = gtp_var_list; tve; tve = tve->next) {
+ if (tve->pts == NULL)
+ continue;
+ if (tve->pts->event == NULL)
+ continue;
+
+ tve->pts->val = perf_event_read_value(tve->pts->event,
+ &(tve->pts->enabled),
+ &(tve->pts->running));
+ perf_event_release_kernel(tve->pts->event);
+ tve->pts->event = NULL;
+ }
+#endif
+
+ kfree(gtp_var_array);
+ gtp_var_array = NULL;
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (gtp_frame) {
+ gtp_frame_iter_open();
+ gtp_frame_iter_reset();
+ }
+#endif
+
+ gtp_start = 0;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (atomic_read(>pframe_pipe_wq_v) > 0) {
+ atomic_dec(>pframe_pipe_wq_v);
+ tasklet_schedule(>pframe_pipe_wq_tasklet);
+ }
+ tasklet_kill(>pframe_pipe_wq_tasklet);
+#endif
+ wake_up_interruptible_nr(>pframe_wq, 1);
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qtinit(void)
+{
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtinit\n");
+#endif
+
+ if (gtp_start)
+ gtp_gdbrsp_qtstop();
+
+ gtp_list_release();
+
+#ifdef GTP_RB
+ if (!GTP_RB_PAGE_IS_EMPTY)
+#elif defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (gtp_frame)
+#endif
+ gtp_frame_reset();
+
+ gtpro_list_clear();
+
+ gtp_var_release();
+
+#ifdef CONFIG_X86
+ gtp_access_cooked_rdtsc = 0;
+#endif
+ gtp_access_cooked_clock = 0;
+#ifdef CONFIG_PERF_EVENTS
+ gtp_have_pc_pe = 0;
+#endif
+
+ return 0;
+}
+
+struct gtp_x_loop {
+ struct gtp_x_loop *next;
+ unsigned int addr;
+ int non_goto_done;
+};
+
+static struct gtp_x_loop *
+gtp_x_loop_find(struct gtp_x_loop *list, unsigned int pc)
+{
+ struct gtp_x_loop *ret = NULL;
+
+ for (ret = list; ret; ret = ret->next) {
+ if (ret->addr == pc)
+ break;
+ }
+
+ return ret;
+}
+
+static struct gtp_x_loop *
+gtp_x_loop_add(struct gtp_x_loop **list, unsigned int pc, int non_goto_done)
+{
+ struct gtp_x_loop *ret;
+
+ ret = kmalloc(sizeof(struct gtp_x_loop), GFP_KERNEL);
+ if (!ret)
+ goto out;
+
+ ret->addr = pc;
+ ret->non_goto_done = non_goto_done;
+
+ ret->next = *list;
+ *list = ret;
+
+out:
+ return ret;
+}
+
+struct gtp_x_if_goto {
+ struct gtp_x_if_goto *next;
+ unsigned int ip;
+ unsigned int sp;
+};
+
+static struct gtp_x_if_goto *
+gtp_x_if_goto_add(struct gtp_x_if_goto **list, unsigned int pc, unsigned int sp)
+{
+ struct gtp_x_if_goto *ret;
+
+ ret = kmalloc(sizeof(struct gtp_x_loop), GFP_KERNEL);
+ if (!ret)
+ goto out;
+
+ ret->ip = pc;
+ ret->sp = sp;
+
+ ret->next = *list;
+ *list = ret;
+
+out:
+ return ret;
+}
+
+struct gtp_x_var {
+ struct gtp_x_var *next;
+ unsigned int num;
+ unsigned int flags;
+};
+
+static int
+gtp_x_var_add(struct gtp_x_var **list, unsigned int num, unsigned int flag)
+{
+ struct gtp_x_var *curv;
+
+ for (curv = *list; curv; curv = curv->next) {
+ if (curv->num == num)
+ break;
+ }
+
+ if (!curv) {
+ curv = kmalloc(sizeof(struct gtp_x_var), GFP_KERNEL);
+ if (!curv)
+ return -ENOMEM;
+ curv->num = num;
+ curv->flags = 0;
+ if (*list) {
+ curv->next = *list;
+ *list = curv;
+ } else {
+ curv->next = NULL;
+ *list = curv;
+ }
+ }
+
+ curv->flags |= flag;
+
+ return 0;
+}
+
+static int
+gtp_add_backtrace_actions(struct gtp_entry *tpe)
+{
+ struct action *ae, *new_ae;
+ int got_r = 0, got_m = 0;
+
+ for (ae = tpe->action_list; ae; ae = ae->next) {
+ if (ae->type == 'R')
+ got_r = 1;
+ else if (ae->type == 'M' && ae->u.m.regnum == GTP_SP_NUM
+ && ae->u.m.offset == 0 && ae->u.m.size >= gtp_bt_size)
+ got_m = 1;
+
+ if (got_r && got_m)
+ break;
+ if (!ae->next)
+ break;
+ }
+
+ if (!got_r) {
+ new_ae = gtp_action_alloc('R');
+ if (!new_ae)
+ return -ENOMEM;
+ if (ae)
+ ae->next = new_ae;
+ else
+ tpe->action_list = ae;
+ ae = new_ae;
+ }
+
+ if (!got_m) {
+ new_ae = gtp_action_alloc('M');
+ if (!new_ae)
+ return -ENOMEM;
+ new_ae->u.m.regnum = GTP_SP_NUM;
+ new_ae->u.m.size = gtp_bt_size;
+ if (ae)
+ ae->next = new_ae;
+ else
+ tpe->action_list = ae;
+ }
+
+ return 1;
+}
+
+static int
+gtp_check_x_simple(struct gtp_entry *tpe, struct action *ae)
+{
+ int ret = -EINVAL;
+ unsigned int pc = 0, sp = 0;
+ struct gtp_x_if_goto *glist = NULL, *gtmp;
+ struct gtp_x_var *vlist = NULL, *vtmp;
+ uint8_t *ebuf = ae->u.exp.buf;
+ int last_trace_pc = -1;
+ unsigned int sp_max = 0;
+
+reswitch:
+ while (pc < ae->u.exp.size) {
+#ifdef GTP_DEBUG_V
+ printk(GTP_DEBUG_V "gtp_check_x_simple: cmd %x\n", ebuf[pc]);
+#endif
+ switch (ebuf[pc++]) {
+ /* add */
+ case 0x02:
+ /* sub */
+ case 0x03:
+ /* mul */
+ case 0x04:
+ /* lsh */
+ case 0x09:
+ /* rsh_signed */
+ case 0x0a:
+ /* rsh_unsigned */
+ case 0x0b:
+ /* bit_and */
+ case 0x0f:
+ /* bit_or */
+ case 0x10:
+ /* bit_xor */
+ case 0x11:
+ /* equal */
+ case 0x13:
+ /* less_signed */
+ case 0x14:
+ /* less_unsigned */
+ case 0x15:
+ /* pop */
+ case 0x29:
+ /* swap */
+ case 0x2b:
+ if (sp < 1) {
+ printk(KERN_WARNING "gtp_check_x_simple: stack "
+ "overflow in %d.\n",
+ pc - 1);
+ goto release_out;
+ } else {
+ if (ebuf[pc - 1] != 0x2b)
+ sp--;
+ }
+ break;
+
+ /* trace */
+ case 0x0c:
+ if (tpe->have_printk)
+ last_trace_pc = pc - 1;
+
+ if (sp < 2) {
+ printk(KERN_WARNING "gtp_check_x_simple: stack "
+ "overflow in %d.\n",
+ pc - 1);
+ goto release_out;
+ } else
+ sp -= 2;
+ break;
+
+ /* log_not */
+ case 0x0e:
+ /* bit_not */
+ case 0x12:
+ /* ref8 */
+ case 0x17:
+ /* ref16 */
+ case 0x18:
+ /* ref32 */
+ case 0x19:
+ /* ref64 */
+ case 0x1a:
+ break;
+
+ /* dup */
+ case 0x28:
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ break;
+
+ /* const8 */
+ case 0x22:
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ /* ext */
+ case 0x16:
+ /* zero_ext */
+ case 0x2a:
+ if (pc >= ae->u.exp.size)
+ goto release_out;
+ pc++;
+ break;
+
+ /* trace_quick */
+ case 0x0d:
+ if (tpe->have_printk)
+ last_trace_pc = pc - 1;
+
+ if (pc >= ae->u.exp.size)
+ goto release_out;
+ pc++;
+ break;
+
+ /* const16 */
+ case 0x23:
+ /* reg */
+ case 0x26:
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ pc += 2;
+
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ break;
+
+ /* const32 */
+ case 0x24:
+ if (pc + 3 >= ae->u.exp.size)
+ goto release_out;
+ pc += 4;
+
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ break;
+
+ /* const64 */
+ case 0x25:
+ if (pc + 7 >= ae->u.exp.size)
+ goto release_out;
+ pc += 8;
+
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ break;
+
+ /* if_goto */
+ case 0x20:
+ if (tpe->have_printk) {
+ printk(KERN_WARNING "If_goto action doesn't"
+ "support printk.\n");
+ goto release_out;
+ }
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+
+ {
+ unsigned int dpc = (ebuf[pc] << 8)
+ + ebuf[pc + 1];
+
+ if (dpc < pc) {
+ /* This action X include loop. */
+ ae->type = 0xff;
+ ret = 0;
+ goto release_out;
+ }
+
+ if (!gtp_x_if_goto_add(&glist, dpc, sp)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ }
+
+ pc += 2;
+ break;
+
+ /* goto */
+ case 0x21:
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+
+ {
+ unsigned int dpc = (ebuf[pc] << 8)
+ + ebuf[pc + 1];
+
+ if (dpc < pc) {
+ /* This action X include loop. */
+ ae->type = 0xff;
+ ret = 0;
+ goto release_out;
+ }
+
+ pc = dpc;
+ }
+ break;
+
+ /* end */
+ case 0x27:
+ goto out;
+ break;
+
+ /* getv */
+ case 0x2c: {
+ int arg;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 1)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+
+ if (arg == GTP_VAR_COOKED_CLOCK_ID)
+ gtp_access_cooked_clock = 1;
+#ifdef CONFIG_X86
+ else if (arg == GTP_VAR_COOKED_RDTSC_ID)
+ gtp_access_cooked_rdtsc = 1;
+#endif
+ ebuf[pc - 3] = op_special_getv;
+ }
+ }
+ sp++;
+ if (sp_max < sp)
+ sp_max = sp;
+ break;
+
+ /* setv */
+ case 0x2d: {
+ int arg;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 2)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_KRET_ID) {
+ /* XXX: still not set it
+ value to maxactive. */
+ tpe->is_kretprobe = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+
+ if (arg == GTP_VAR_PRINTK_LEVEL_ID)
+ tpe->have_printk = 1;
+
+ ebuf[pc - 3] = op_special_setv;
+ }
+ }
+ break;
+
+ /* tracev */
+ case 0x2e: {
+ int arg;
+
+ if (tpe->have_printk)
+ last_trace_pc = pc - 1;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 4)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+ if (arg == GTP_VAR_COOKED_CLOCK_ID)
+ gtp_access_cooked_clock = 1;
+#ifdef CONFIG_X86
+ else if (arg == GTP_VAR_COOKED_RDTSC_ID)
+ gtp_access_cooked_rdtsc = 1;
+#endif
+ ebuf[pc - 3] = op_special_tracev;
+ }
+ }
+ break;
+
+ /* div_signed */
+ case 0x05:
+ /* div_unsigned */
+ case 0x06:
+ /* rem_signed */
+ case 0x07:
+ /* rem_unsigned */
+ case 0x08:
+#ifdef CONFIG_MIPS
+ /* XXX, mips don't have 64 bit div. */
+ goto release_out;
+#endif
+ if (sp < 1) {
+ printk(KERN_WARNING "gtp_check_x_simple: stack "
+ "overflow in %d.\n",
+ pc - 1);
+ goto release_out;
+ } else
+ sp--;
+ break;
+
+ /* float */
+ case 0x01:
+ /* ref_float */
+ case 0x1b:
+ /* ref_double */
+ case 0x1c:
+ /* ref_long_double */
+ case 0x1d:
+ /* l_to_d */
+ case 0x1e:
+ /* d_to_l */
+ case 0x1f:
+ /* trace16 */
+ case 0x30:
+ default:
+ goto release_out;
+ break;
+ }
+ }
+ goto release_out;
+
+out:
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "sp_max = %d\n", sp_max);
+#endif
+ if (sp_max >= STACK_MAX) {
+ printk(KERN_WARNING "gtp_check_x_simple: stack overflow, "
+ "current %d, max %d.\n",
+ sp_max, STACK_MAX);
+ goto release_out;
+ }
+ if (glist) {
+ pc = glist->ip;
+ sp = glist->sp;
+ gtmp = glist;
+ glist = glist->next;
+ kfree(gtmp);
+ goto reswitch;
+ }
+ ret = 0;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_check_x_simple: Code is OK. sp_max is %d.\n",
+ sp_max);
+#endif
+
+release_out:
+ while (glist) {
+ gtmp = glist;
+ glist = glist->next;
+ kfree(gtmp);
+ }
+ while (vlist) {
+ struct gtp_var *var;
+
+ vtmp = vlist;
+ vlist = vlist->next;
+
+ /* Get the var of vtmp. */
+ var = gtp_var_find(vtmp->num);
+ if (var == NULL) {
+ printk(KERN_WARNING "gtp_check_x_simple: cannot find "
+ "tvar %d.\n", vtmp->num);
+ ret = -EINVAL;
+ } else {
+ if (var->per_cpu == NULL) {
+ if ((vtmp->flags & 2)
+ && ((vtmp->flags & 1) || (vtmp->flags & 4)))
+ ae->u.exp.need_var_lock = 1;
+ }
+ }
+ kfree(vtmp);
+ }
+
+ if (tpe->have_printk && last_trace_pc > -1) {
+ /* Set the last trace code to printk code. */
+ switch (ebuf[last_trace_pc]) {
+ /* trace */
+ case 0x0c:
+ ebuf[last_trace_pc] = op_trace_printk;
+ break;
+ /* trace_quick */
+ case 0x0d:
+ ebuf[last_trace_pc] = op_trace_quick_printk;
+ break;
+ /* tracev */
+ case 0x2e:
+ ebuf[last_trace_pc] = op_tracev_printk;
+ break;
+ case op_special_tracev:
+ ebuf[last_trace_pc] = op_tracev_printk;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int
+gtp_check_x_loop(struct gtp_entry *tpe, struct action *ae)
+{
+ int ret = -EINVAL;
+ unsigned int pc = 0;
+ struct gtp_x_loop *glist = NULL, *gtmp;
+ struct gtp_x_var *vlist = NULL, *vtmp;
+ uint8_t *ebuf = ae->u.exp.buf;
+
+ printk(KERN_WARNING "Action of tracepoint %d have loop.\n",
+ (int)tpe->num);
+
+ tpe->have_printk = 0;
+
+reswitch:
+ while (pc < ae->u.exp.size) {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_check_x_loop: cmd %x\n", ebuf[pc]);
+#endif
+ switch (ebuf[pc++]) {
+ /* add */
+ case 0x02:
+ ebuf[pc - 1] = op_check_add;
+ break;
+ /* sub */
+ case 0x03:
+ ebuf[pc - 1] = op_check_sub;
+ break;
+ /* mul */
+ case 0x04:
+ ebuf[pc - 1] = op_check_mul;
+ break;
+ /* lsh */
+ case 0x09:
+ ebuf[pc - 1] = op_check_lsh;
+ break;
+ /* rsh_signed */
+ case 0x0a:
+ ebuf[pc - 1] = op_check_rsh_signed;
+ break;
+ /* rsh_unsigned */
+ case 0x0b:
+ ebuf[pc - 1] = op_check_rsh_unsigned;
+ break;
+ /* bit_and */
+ case 0x0f:
+ ebuf[pc - 1] = op_check_bit_and;
+ break;
+ /* bit_or */
+ case 0x10:
+ ebuf[pc - 1] = op_check_bit_or;
+ break;
+ /* bit_xor */
+ case 0x11:
+ ebuf[pc - 1] = op_check_bit_xor;
+ break;
+ /* equal */
+ case 0x13:
+ ebuf[pc - 1] = op_check_equal;
+ break;
+ /* less_signed */
+ case 0x14:
+ ebuf[pc - 1] = op_check_less_signed;
+ break;
+ /* less_unsigned */
+ case 0x15:
+ ebuf[pc - 1] = op_check_less_unsigned;
+ break;
+ /* pop */
+ case 0x29:
+ ebuf[pc - 1] = op_check_pop;
+ break;
+ /* swap */
+ case 0x2b:
+ ebuf[pc - 1] = op_check_swap;
+ break;
+
+ /* trace */
+ case 0x0c:
+ ebuf[pc - 1] = op_check_trace;
+ break;
+
+ /* log_not */
+ case 0x0e:
+ /* bit_not */
+ case 0x12:
+ /* ref8 */
+ case 0x17:
+ /* ref16 */
+ case 0x18:
+ /* ref32 */
+ case 0x19:
+ /* ref64 */
+ case 0x1a:
+ /* dup */
+ case 0x28:
+ break;
+
+ /* const8 */
+ case 0x22:
+ /* ext */
+ case 0x16:
+ /* zero_ext */
+ case 0x2a:
+ /* trace_quick */
+ case 0x0d:
+ if (pc >= ae->u.exp.size)
+ goto release_out;
+ pc++;
+ break;
+
+ /* const16 */
+ case 0x23:
+ /* reg */
+ case 0x26:
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ pc += 2;
+ break;
+
+ /* const32 */
+ case 0x24:
+ if (pc + 3 >= ae->u.exp.size)
+ goto release_out;
+ pc += 4;
+ break;
+
+ /* const64 */
+ case 0x25:
+ if (pc + 7 >= ae->u.exp.size)
+ goto release_out;
+ pc += 8;
+ break;
+
+ /* if_goto */
+ case 0x20:
+ case op_check_if_goto:
+ ebuf[pc - 1] = op_check_if_goto;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+
+ gtmp = gtp_x_loop_find(glist, pc);
+ if (gtmp) {
+ if (gtmp->non_goto_done)
+ goto out;
+ else {
+ gtmp->non_goto_done = 1;
+ pc += 2;
+ }
+ } else {
+ if (!gtp_x_loop_add(&glist, pc, 0)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ pc = (ebuf[pc] << 8) + ebuf[pc + 1];
+ }
+ break;
+
+ /* goto */
+ case 0x21:
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+
+ gtmp = gtp_x_loop_find(glist, pc);
+ if (gtmp)
+ goto out;
+ else {
+ if (!gtp_x_loop_add(&glist, pc, 1)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ }
+
+ pc = (ebuf[pc] << 8) + (ebuf[pc + 1]);
+ break;
+
+ /* end */
+ case 0x27:
+ goto out;
+ break;
+
+ /* getv */
+ case 0x2c: {
+ int arg;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 1)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+
+ if (arg == GTP_VAR_COOKED_CLOCK_ID)
+ gtp_access_cooked_clock = 1;
+#ifdef CONFIG_X86
+ else if (arg == GTP_VAR_COOKED_RDTSC_ID)
+ gtp_access_cooked_rdtsc = 1;
+#endif
+ ebuf[pc - 3] = op_special_getv;
+ }
+ }
+ break;
+
+ /* setv */
+ case 0x2d: {
+ int arg;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 2)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_KRET_ID) {
+ /* XXX: still not set it
+ value to maxactive. */
+ tpe->is_kretprobe = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+
+ if (arg == GTP_VAR_PRINTK_LEVEL_ID) {
+ printk(KERN_WARNING "Loop "
+ "action doesn't"
+ "support printk.\n");
+ goto release_out;
+ }
+
+ ebuf[pc - 3] = op_special_setv;
+ }
+ }
+ break;
+
+ /* tracev */
+ case 0x2e: {
+ int arg;
+
+ if (pc + 1 >= ae->u.exp.size)
+ goto release_out;
+ arg = ebuf[pc++];
+ arg = (arg << 8) + ebuf[pc++];
+
+ if (!GTP_VAR_IS_SPECIAL(arg)) {
+ if (gtp_x_var_add(&vlist, arg, 4)) {
+ ret = -ENOMEM;
+ goto release_out;
+ }
+ } else {
+ if (arg == GTP_VAR_NO_SELF_TRACE_ID) {
+ tpe->no_self_trace = 1;
+ ret = 1;
+ goto release_out;
+ } else if (arg == GTP_VAR_BT_ID) {
+ ret = gtp_add_backtrace_actions (tpe);
+ goto release_out;
+ }
+ if (arg == GTP_VAR_COOKED_CLOCK_ID)
+ gtp_access_cooked_clock = 1;
+#ifdef CONFIG_X86
+ else if (arg == GTP_VAR_COOKED_RDTSC_ID)
+ gtp_access_cooked_rdtsc = 1;
+#endif
+ ebuf[pc - 3] = op_special_tracev;
+ }
+ }
+ break;
+
+ /* div_signed */
+ case 0x05:
+#ifdef CONFIG_MIPS
+ /* XXX, mips don't have 64 bit div. */
+ printk(KERN_WARNING "MIPS don't have 64 bit div.\n");
+ goto release_out;
+#endif
+ ebuf[pc - 1] = op_check_div_signed;
+ break;
+ /* div_unsigned */
+ case 0x06:
+#ifdef CONFIG_MIPS
+ /* XXX, mips don't have 64 bit div. */
+ printk(KERN_WARNING "MIPS don't have 64 bit div.\n");
+ goto release_out;
+#endif
+ ebuf[pc - 1] = op_check_div_unsigned;
+ break;
+ /* rem_signed */
+ case 0x07:
+#ifdef CONFIG_MIPS
+ /* XXX, mips don't have 64 bit div. */
+ printk(KERN_WARNING "MIPS don't have 64 bit div.\n");
+ goto release_out;
+#endif
+ ebuf[pc - 1] = op_check_rem_signed;
+ break;
+ /* rem_unsigned */
+ case 0x08:
+#ifdef CONFIG_MIPS
+ /* XXX, mips don't have 64 bit div. */
+ printk(KERN_WARNING "MIPS don't have 64 bit div.\n");
+ goto release_out;
+#endif
+ ebuf[pc - 1] = op_check_rem_unsigned;
+ break;
+
+ /* float */
+ case 0x01:
+ /* ref_float */
+ case 0x1b:
+ /* ref_double */
+ case 0x1c:
+ /* ref_long_double */
+ case 0x1d:
+ /* l_to_d */
+ case 0x1e:
+ /* d_to_l */
+ case 0x1f:
+ /* trace16 */
+ case 0x30:
+ default:
+ goto release_out;
+ break;
+ }
+ }
+ goto release_out;
+
+out:
+ for (gtmp = glist; gtmp; gtmp = gtmp->next) {
+ if (!gtmp->non_goto_done)
+ break;
+ }
+ if (gtmp) {
+ pc = gtmp->addr + 2;
+ gtmp->non_goto_done = 1;
+ goto reswitch;
+ }
+ ret = 0;
+
+release_out:
+ while (glist) {
+ gtmp = glist;
+ glist = glist->next;
+ kfree(gtmp);
+ }
+ while (vlist) {
+ struct gtp_var *var;
+
+ vtmp = vlist;
+ vlist = vlist->next;
+
+ /* Get the var of vtmp. */
+ var = gtp_var_find(vtmp->num);
+ if (var == NULL) {
+ printk(KERN_WARNING "gtp_check_x_loop: cannot find "
+ "tvar %d.\n", vtmp->num);
+ ret = -EINVAL;
+ } else {
+ if (var->per_cpu == NULL) {
+ if ((vtmp->flags & 2)
+ && ((vtmp->flags & 1) || (vtmp->flags & 4)))
+ ae->u.exp.need_var_lock = 1;
+ }
+ }
+ kfree(vtmp);
+ }
+
+ return ret;
+}
+
+static int
+gtp_check_x(struct gtp_entry *tpe, struct action *ae)
+{
+ int ret = gtp_check_x_simple(tpe, ae);
+
+ if (ret != 0 || ae->type == 'X')
+ return ret;
+
+ return gtp_check_x_loop(tpe, ae);
+}
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+static void
+gtpframe_pipe_wq_wake_up(unsigned long data)
+{
+ wake_up_interruptible_nr(>pframe_pipe_wq, 1);
+}
+#endif
+
+static void
+gtp_wq_add_work(unsigned long data)
+{
+ queue_work(gtp_wq, (struct work_struct *)data);
+}
+
+static int
+gtp_gdbrsp_qtstart(void)
+{
+ int cpu;
+ struct gtp_entry *tpe;
+ struct gtp_var *tve;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtstart\n");
+#endif
+
+ if (gtp_start)
+ return -EBUSY;
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (!tracing_is_on()) {
+ printk(KERN_WARNING "qtstart: Ring buffer is off. Please use "
+ "command "
+ "\"echo 1 > /sys/kernel/debug/tracing/tracing_on\" "
+ "open it.\n");
+ return -EIO;
+ }
+#endif
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ int ret;
+ struct action *ae, *prev_ae = NULL;
+
+ /* Check cond. */
+ if (tpe->cond) {
+ ret = gtp_check_x(tpe, tpe->cond);
+ if (ret > 0) {
+ kfree(tpe->cond->u.exp.buf);
+ kfree(tpe->cond);
+ tpe->cond = NULL;
+ } else if (ret < 0)
+ return ret;
+ }
+
+ /* Check X. */
+ for (ae = tpe->action_list; ae; ae = ae->next) {
+re_check:
+ if (ae->type == 'X' || ae->type == 0xff) {
+ ret = gtp_check_x(tpe, ae);
+ if (ret > 0) {
+ struct action *old_ae = ae;
+
+ /* Remove ae from action_list. */
+ ae = ae->next;
+ if (prev_ae)
+ prev_ae->next = ae;
+ else
+ tpe->action_list = ae;
+
+ kfree(old_ae->u.exp.buf);
+ kfree(old_ae);
+
+ if (ae)
+ goto re_check;
+ else
+ break;
+ } else if (ret < 0)
+ return ret;
+ }
+
+ prev_ae = ae;
+ }
+
+ /* Check the tracepoint that have printk. */
+ if (tpe->have_printk) {
+ struct action *ae, *prev_ae = NULL;
+ struct gtpsrc *src, *srctail = NULL;
+
+restart:
+ for (ae = tpe->action_list; ae;
+ prev_ae = ae, ae = ae->next) {
+ switch (ae->type) {
+ case 'R':
+ /* Remove it. */
+ if (prev_ae)
+ prev_ae->next = ae->next;
+ else
+ tpe->action_list = ae->next;
+ kfree(ae);
+ if (prev_ae)
+ ae = prev_ae;
+ else
+ goto restart;
+ break;
+ case 'M':
+ printk(KERN_WARNING "qtstart: action "
+ "of tp %d %p is not right. "
+ "Please put global variable to "
+ "trace state variable "
+ "$printk_tmp before print it.\n",
+ (int)tpe->num,
+ (void *)(CORE_ADDR)tpe->addr);
+ return -EINVAL;
+ break;
+ }
+ }
+
+ for (src = tpe->src; src; src = src->next) {
+ int i;
+ char str[strlen(src->src) >> 1];
+ char *var = NULL;
+ ULONGEST num;
+ char tmp[30];
+ struct gtpsrc *ksrc;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtstart: action "
+ "%s\n", src->src);
+#endif
+ /* Get the action in str. */
+ if (strncmp("cmd:0:", src->src,
+ strlen("cmd:0:")))
+ continue;
+ var = hex2ulongest(src->src + 6, &num);
+ if (var[0] == '\0')
+ return -EINVAL;
+ var++;
+ hex2string(var, str);
+ if (strlen(str) != num)
+ return -EINVAL;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtstart: action "
+ "command %s\n", str);
+#endif
+
+ if (strncmp("collect ", str,
+ strlen("collect ")))
+ continue;
+ for (i = strlen("collect "); ; i++) {
+ if (str[i] != ' ') {
+ var = str + i;
+ break;
+ }
+ if (str[i] == '\0')
+ break;
+ }
+ if (!var) {
+ printk(KERN_WARNING "qtstart: cannot "
+ "get the var name "
+ "from tp %d %p"
+ "command %s.\n",
+ (int)tpe->num,
+ (void *)(CORE_ADDR)tpe->addr,
+ str);
+ return -EINVAL;
+ }
+ if (strcmp(var, "$args") == 0
+ || strcmp(var, "$local") == 0) {
+ printk(KERN_WARNING "qtstart: cannot "
+ "print $args and "
+ "$local.\n");
+ return -EINVAL;
+ }
+ if (strcmp(var, "$reg") == 0)
+ continue;
+
+ ksrc = kmalloc(sizeof(struct gtpsrc),
+ GFP_KERNEL);
+ if (ksrc == NULL)
+ return -ENOMEM;
+ ksrc->next = NULL;
+
+ snprintf(tmp, 30, "gtp %d %p:", (int)tpe->num,
+ (void *)(CORE_ADDR)tpe->addr);
+ ksrc->src = kmalloc(strlen(tmp)
+ + strlen(var) + 2,
+ GFP_KERNEL);
+ if (ksrc->src == NULL) {
+ kfree(ksrc);
+ return -ENOMEM;
+ }
+ sprintf(ksrc->src, "%s%s=", tmp, var);
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtstart: new "
+ "printk var %s\n", ksrc->src);
+#endif
+
+ if (tpe->printk_str)
+ srctail->next = ksrc;
+ else
+ tpe->printk_str = ksrc;
+ srctail = ksrc;
+ }
+ }
+ }
+
+#ifdef GTP_RB
+ if (GTP_RB_PAGE_IS_EMPTY) {
+ if (gtp_rb_page_alloc(GTP_FRAME_SIZE) != 0) {
+ gtp_rb_page_free();
+ return -ENOMEM;
+ }
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (!gtp_frame) {
+#ifdef GTP_FRAME_SIMPLE
+ gtp_frame = vmalloc(GTP_FRAME_SIZE);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ gtp_frame = ring_buffer_alloc(GTP_FRAME_SIZE,
+ gtp_circular ? RB_FL_OVERWRITE
+ : 0);
+#endif
+ if (!gtp_frame)
+ return -ENOMEM;
+#endif
+
+ gtp_frame_reset();
+ }
+
+ for_each_online_cpu(cpu) {
+#ifdef CONFIG_X86
+ per_cpu(rdtsc_current, cpu) = 0;
+ per_cpu(rdtsc_offset, cpu) = 0;
+#endif
+ per_cpu(local_clock_current, cpu) = 0;
+ per_cpu(local_clock_offset, cpu) = 0;
+ per_cpu(gtp_handler_began, cpu) = 0;
+ }
+
+ gtp_start = 1;
+
+ gtp_var_array = kmalloc(sizeof(struct gtp_var *)
+ * (gtp_var_tail - gtp_var_head + 1),
+ GFP_KERNEL);
+ if (!gtp_var_array) {
+ gtp_gdbrsp_qtstop();
+ return -ENOMEM;
+ }
+ memset(gtp_var_array, '\0', sizeof(struct gtp_var *)
+ *(gtp_var_tail - gtp_var_head + 1));
+ for (tve = gtp_var_list; tve; tve = tve->next)
+ gtp_var_array[tve->num - gtp_var_head] = tve;
+
+#ifdef CONFIG_PERF_EVENTS
+ /* Clear pc_pe_list. */
+ for_each_online_cpu(cpu) {
+ per_cpu(pc_pe_list, cpu) = NULL;
+ per_cpu(pc_pe_list_all_disabled, cpu) = 1;
+ }
+ for (tve = gtp_var_list; tve; tve = tve->next) {
+ if (tve->ptid == pe_tv_unknown)
+ continue;
+ if (tve->pts->event)
+ continue;
+
+ /* Get event. */
+ tve->pts->event =
+ perf_event_create_kernel_counter(&(tve->pts->attr),
+ tve->pts->cpu,
+ NULL, NULL, NULL);
+ if (IS_ERR(tve->pts->event)) {
+ int ret = PTR_ERR(tve->pts->event);
+
+ printk(KERN_WARNING "gtp_gdbrsp_qtstart:"
+ "create perf_event CPU%d %d %d got error.\n",
+ (int)tve->pts->cpu, (int)tve->pts->attr.type,
+ (int)tve->pts->attr.config);
+ tve->pts->event = NULL;
+ gtp_gdbrsp_qtstop();
+ return ret;
+ }
+
+ /* Add event to pc_pe_list. */
+ if (tve->pts->cpu >= 0) {
+ struct pe_tv_s *ppl = per_cpu(pc_pe_list,
+ tve->pts->cpu);
+ if (ppl == NULL) {
+ per_cpu(pc_pe_list, tve->pts->cpu) = tve->pts;
+ tve->pts->pc_next = NULL;
+ } else {
+ tve->pts->pc_next = ppl;
+ per_cpu(pc_pe_list,
+ tve->pts->cpu) = tve->pts;
+ }
+ if (tve->pts->en)
+ per_cpu(pc_pe_list_all_disabled, tve->pts->cpu)
+ = 0;
+ }
+ }
+#endif
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ tasklet_init(>pframe_pipe_wq_tasklet, gtpframe_pipe_wq_wake_up, 0);
+#endif
+
+ gtp_start_last_errno = 0;
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ tpe->reason = gtp_stop_normal;
+ if (!tpe->disable && tpe->addr != 0) {
+ int ret;
+
+ if (!tpe->nopass)
+ atomic_set(&tpe->current_pass, tpe->pass);
+
+ tasklet_init(&tpe->tasklet, gtp_wq_add_work,
+ (unsigned long)&tpe->work);
+
+ if (tpe->is_kretprobe) {
+ if (gtp_access_cooked_clock
+#ifdef CONFIG_X86
+ || gtp_access_cooked_rdtsc
+#endif
+#ifdef CONFIG_PERF_EVENTS
+ || gtp_have_pc_pe
+#endif
+ )
+ tpe->kp.handler =
+ gtp_kp_ret_handler_plus;
+ else
+ tpe->kp.handler = gtp_kp_ret_handler;
+ ret = register_kretprobe(&tpe->kp);
+ } else {
+ if (gtp_access_cooked_clock
+#ifdef CONFIG_X86
+ || gtp_access_cooked_rdtsc
+#endif
+#ifdef CONFIG_PERF_EVENTS
+ || gtp_have_pc_pe
+#endif
+ ) {
+ if (tpe->step) {
+ tpe->kp.kp.pre_handler =
+ gtp_kp_pre_handler_plus_step;
+ tpe->kp.kp.post_handler =
+ gtp_kp_post_handler_plus;
+ } else
+ tpe->kp.kp.pre_handler =
+ gtp_kp_pre_handler_plus;
+ ret = register_kprobe(&tpe->kp.kp);
+ } else {
+ tpe->kp.kp.pre_handler =
+ gtp_kp_pre_handler;
+ if (tpe->step)
+ tpe->kp.kp.post_handler =
+ gtp_kp_post_handler;
+ ret = register_kprobe(&tpe->kp.kp);
+ }
+ }
+ if (ret < 0) {
+ printk(KERN_WARNING "gtp_gdbrsp_qtstart:"
+ "register tracepoint %d %p got error.\n",
+ (int)tpe->num, (void *)(CORE_ADDR)tpe->addr);
+ if (gtp_start_ignore_error) {
+ gtp_start_last_errno = (uint64_t)ret;
+ continue;
+ } else {
+ gtp_gdbrsp_qtstop();
+ return ret;
+ }
+ }
+ tpe->kpreg = 1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+gtp_parse_x(struct gtp_entry *tpe, struct action *ae, char **pkgp)
+{
+ ULONGEST size;
+ int ret = 0, i, h, l;
+ char *pkg = *pkgp;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_parse_x: %s\n", pkg);
+#endif
+
+ if (pkg[0] == '\0') {
+ ret = -EINVAL;
+ goto out;
+ }
+ pkg = hex2ulongest(pkg, &size);
+ if (pkg[0] != ',') {
+ ret = -EINVAL;
+ goto out;
+ }
+ ae->u.exp.size = (unsigned int)size;
+ pkg++;
+
+ ae->u.exp.buf = kmalloc(ae->u.exp.size, GFP_KERNEL);
+ if (!ae->u.exp.buf)
+ return -ENOMEM;
+
+ for (i = 0; i < ae->u.exp.size
+ && hex2int(pkg[0], &h) && hex2int(pkg[1], &l);
+ i++) {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_parse_x: %s %d %d\n", pkg, h, l);
+#endif
+ ae->u.exp.buf[i] = (h << 4) | l;
+ pkg += 2;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_parse_x: %x\n", ae->u.exp.buf[i]);
+#endif
+ }
+ if (i != ae->u.exp.size) {
+ kfree(ae->u.exp.buf);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ae->u.exp.need_var_lock = 0;
+
+out:
+ *pkgp = pkg;
+ return ret;
+}
+
+static int
+gtp_gdbrsp_qtdp(char *pkg)
+{
+ int addnew = 1;
+ ULONGEST num, addr;
+ struct gtp_entry *tpe;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtdp: %s\n", pkg);
+#endif
+
+ if (gtp_start)
+ return -EBUSY;
+
+ if (pkg[0] == '-') {
+ pkg++;
+ addnew = 0;
+ }
+
+ /* Get num and addr. */
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg = hex2ulongest(pkg, &num);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &addr);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+
+ tpe = gtp_list_find(num, addr);
+ if (addnew) {
+ ULONGEST ulongtmp;
+
+ if (tpe)
+ return -EINVAL;
+
+ tpe = gtp_list_add(num, addr);
+ if (tpe == NULL)
+ return -ENOMEM;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ if (pkg[0] == 'D')
+ tpe->disable = 1;
+ pkg++;
+
+ /* Get step. */
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &ulongtmp);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ if (ulongtmp > 1) {
+ printk(KERN_WARNING "KGTP only support one step.\n");
+ return -EINVAL;
+ }
+ tpe->step = (int)ulongtmp;
+
+ /* Get pass. */
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &tpe->pass);
+ if (tpe->pass == 0)
+ tpe->nopass = 1;
+ }
+
+ if (tpe) {
+ /* Add action to tpe. */
+ int step_action = 0;
+
+ if (pkg[0] == 'S') {
+ if (tpe->step == 0)
+ return -EINVAL;
+ pkg++;
+ step_action = 1;
+ } else if (tpe->step_action_list)
+ step_action = 1;
+
+ while (pkg[0]) {
+ struct action *ae = NULL, *atail = NULL;
+ char *pkg_cmd = pkg;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtdp: %s\n", pkg);
+#endif
+ switch (pkg[0]) {
+ case ':':
+ pkg++;
+ break;
+ case 'M': {
+ int is_neg = 0;
+ ULONGEST ulongtmp;
+
+ ae = gtp_action_alloc(pkg[0]);
+ if (!ae)
+ return -ENOMEM;
+ pkg++;
+ if (pkg[0] == '-') {
+ is_neg = 1;
+ pkg++;
+ }
+ pkg = hex2ulongest(pkg, &ulongtmp);
+ ae->u.m.regnum = (int)ulongtmp;
+ if (is_neg)
+ ae->u.m.regnum
+ = -ae->u.m.regnum;
+ if (pkg[0] == '\0') {
+ kfree(ae);
+ return -EINVAL;
+ }
+ pkg++;
+ pkg = hex2ulongest(pkg, &ulongtmp);
+ ae->u.m.offset = (CORE_ADDR)ulongtmp;
+ if (pkg[0] == '\0') {
+ kfree(ae);
+ return -EINVAL;
+ }
+ pkg++;
+ pkg = hex2ulongest(pkg, &ulongtmp);
+ ae->u.m.size = (size_t)ulongtmp;
+ }
+ break;
+ case 'R':
+ /* XXX: reg_mask is ignore. */
+ ae = gtp_action_alloc(pkg[0]);
+ if (!ae)
+ return -ENOMEM;
+ pkg++;
+ pkg = hex2ulongest(pkg,
+ &ae->u.reg_mask);
+ break;
+ case 'X': {
+ int ret;
+
+ ae = gtp_action_alloc(pkg[0]);
+ if (!ae)
+ return -ENOMEM;
+ pkg++;
+ ret = gtp_parse_x(tpe, ae, &pkg);
+ if (ret) {
+ kfree(ae);
+ ae = NULL;
+
+ if (ret < 0)
+ return ret;
+ }
+ }
+ break;
+ case '-':
+ pkg++;
+ break;
+ default:
+ /* XXX: Not support. */
+ return 1;
+ }
+
+ if (ae) {
+ /* Save the cmd. */
+ if (gtp_src_add (pkg_cmd, pkg, &(tpe->action_cmd))) {
+ kfree(ae);
+ return -ENOMEM;
+ }
+ /* Add ae to tpe. */
+ if ((ae->type == 'X' || ae->type == 0xff)
+ && addnew && !tpe->cond) {
+ tpe->cond = ae;
+ tpe->cond->next = NULL;
+ } else if (!step_action && !tpe->action_list) {
+ tpe->action_list = ae;
+ atail = ae;
+ } else if (step_action
+ && !tpe->step_action_list) {
+ tpe->step_action_list = ae;
+ atail = ae;
+ } else {
+ if (atail == NULL) {
+ if (step_action)
+ atail =
+ tpe->step_action_list;
+ else
+ atail =
+ tpe->action_list;
+ for (; atail->next;
+ atail = atail->next)
+ ;
+ }
+ atail->next = ae;
+ atail = ae;
+ }
+ }
+ }
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qtdpsrc(char *pkg)
+{
+ ULONGEST num, addr;
+ struct gtp_entry *tpe;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtdpsrc: %s\n", pkg);
+#endif
+
+ if (gtp_start)
+ return -EBUSY;
+
+ /* Get num and addr. */
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg = hex2ulongest(pkg, &num);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &addr);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ tpe = gtp_list_find(num, addr);
+ if (tpe == NULL)
+ return -EINVAL;
+
+ return gtp_src_add(pkg, NULL, &(tpe->src));
+}
+
+static int
+gtp_gdbrsp_qtdisconnected(char *pkg)
+{
+ ULONGEST setting;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+
+ hex2ulongest(pkg, &setting);
+ gtp_disconnected_tracing = (int)setting;
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qtbuffer(char *pkg)
+{
+ if (strncmp("circular:", pkg, 9) == 0) {
+ ULONGEST setting;
+
+ pkg += 9;
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ hex2ulongest(pkg, &setting);
+
+ gtp_circular = (int)setting;
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (gtp_frame)
+ ring_buffer_change_overwrite(gtp_frame, (int)setting);
+#endif
+
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+gtp_frame_head_find_num(int num)
+{
+#ifdef GTP_FRAME_SIMPLE
+ int tfnum = 0;
+ char *tmp = gtp_frame_r_start;
+
+ do {
+ if (tmp == gtp_frame_end)
+ tmp = gtp_frame;
+
+ if (FID(tmp) == FID_HEAD) {
+ if (tfnum == num) {
+ gtp_frame_current_num = num;
+ gtp_frame_current = tmp;
+ return 0;
+ }
+ tfnum++;
+ }
+
+ tmp = gtp_frame_next(tmp);
+ if (!tmp)
+ break;
+ } while (tmp != gtp_frame_w_start);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (gtp_frame_current_num >= num)
+ gtp_frame_iter_reset();
+
+ while (1) {
+ int cpu;
+
+ cpu = gtp_frame_iter_peek_head();
+ if (cpu < 0)
+ break;
+
+ if (num == gtp_frame_current_num)
+ return cpu;
+
+ ring_buffer_read(gtp_frame_iter[cpu], NULL);
+ }
+#endif
+#ifdef GTP_RB
+ if (num < gtp_frame_current_num)
+ gtp_rb_read_reset();
+
+ while (1) {
+ if (gtp_frame_current_num == num)
+ return 0;
+
+ if (gtp_rb_read() != 0)
+ break;
+ }
+#endif
+
+ return -1;
+}
+
+static int
+gtp_frame_head_find_addr(int inside, unsigned long lo,
+ unsigned long hi)
+{
+#ifdef GTP_FRAME_SIMPLE
+ int tfnum = gtp_frame_current_num;
+ char *tmp;
+
+ if (gtp_frame_current)
+ tmp = gtp_frame_current;
+ else
+ tmp = gtp_frame_r_start;
+
+ do {
+ if (tmp == gtp_frame_end)
+ tmp = gtp_frame;
+
+ if (FID(tmp) == FID_HEAD) {
+ if (tfnum != gtp_frame_current_num) {
+ char *next;
+ struct pt_regs *regs = NULL;
+
+ for (next = *(char **)(tmp + FID_SIZE); next;
+ next = *(char **)(next + FID_SIZE)) {
+ if (FID(next) == FID_REG) {
+ regs = (struct pt_regs *)
+ (next + FID_SIZE
+ + sizeof(char *));
+ break;
+ }
+ }
+ if (regs
+ && ((inside
+ && GTP_REGS_PC(regs) >= lo
+ && GTP_REGS_PC(regs) <= hi)
+ || (!inside
+ && (GTP_REGS_PC(regs) < lo
+ || GTP_REGS_PC(regs) > hi)))) {
+ gtp_frame_current_num = tfnum;
+ gtp_frame_current = tmp;
+ return 0;
+ }
+ }
+ tfnum++;
+ }
+
+ tmp = gtp_frame_next(tmp);
+ if (!tmp)
+ break;
+ } while (tmp != gtp_frame_w_start);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ while (1) {
+ int cpu;
+ struct ring_buffer_event *rbe;
+ char *tmp;
+ struct pt_regs *regs = NULL;
+
+ cpu = gtp_frame_iter_peek_head();
+ if (cpu < 0)
+ break;
+
+ while (1) {
+ ring_buffer_read(gtp_frame_iter[cpu], NULL);
+ rbe = ring_buffer_iter_peek(gtp_frame_iter[cpu], NULL);
+ if (rbe == NULL)
+ break;
+
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ break;
+ if (FID(tmp) == FID_REG) {
+ regs = (struct pt_regs *)(tmp + FID_SIZE);
+ break;
+ }
+ }
+
+ if (regs
+ && ((inside
+ && GTP_REGS_PC(regs) >= lo
+ && GTP_REGS_PC(regs) <= hi)
+ || (!inside
+ && (GTP_REGS_PC(regs) < lo
+ || GTP_REGS_PC(regs) > hi))))
+ return gtp_frame_head_find_num(gtp_frame_current_num);
+ }
+#endif
+#ifdef GTP_RB
+ struct gtp_rb_walk_s rbws;
+
+ if (gtp_frame_current_num < 0) {
+ if (gtp_rb_read() != 0)
+ return -1;
+ }
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID | GTP_RB_WALK_CHECK_TYPE;
+ rbws.type = FID_REG;
+
+ while (1) {
+ char *tmp;
+
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ tmp = gtp_rb_walk(&rbws, gtp_frame_current_rb->rp);
+ if (rbws.reason == gtp_rb_walk_type) {
+ struct pt_regs *regs
+ = (struct pt_regs *)(tmp + FID_SIZE);
+
+ if ((inside && GTP_REGS_PC(regs) >= lo
+ && GTP_REGS_PC(regs) <= hi)
+ || (!inside && (GTP_REGS_PC(regs) < lo
+ || GTP_REGS_PC(regs) > hi))) {
+ return 0;
+ }
+ }
+
+ if (gtp_rb_read() != 0)
+ break;
+ }
+#endif
+
+ return -1;
+}
+
+static int
+gtp_frame_head_find_trace(ULONGEST trace)
+{
+#ifdef GTP_FRAME_SIMPLE
+ int tfnum = gtp_frame_current_num;
+ char *tmp;
+
+ if (gtp_frame_current)
+ tmp = gtp_frame_current;
+ else
+ tmp = gtp_frame_r_start;
+
+ do {
+ if (tmp == gtp_frame_end)
+ tmp = gtp_frame;
+
+ if (FID(tmp) == FID_HEAD) {
+ if (tfnum != gtp_frame_current_num) {
+ if (trace == *(ULONGEST *) (tmp + FID_SIZE
+ + sizeof(char *))) {
+ gtp_frame_current_num = tfnum;
+ gtp_frame_current = tmp;
+ return 0;
+ }
+ }
+ tfnum++;
+ }
+
+ tmp = gtp_frame_next(tmp);
+ if (!tmp)
+ break;
+ } while (tmp != gtp_frame_w_start);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ while (1) {
+ int cpu;
+ struct ring_buffer_event *rbe;
+ char *tmp;
+
+ cpu = gtp_frame_iter_peek_head();
+ if (cpu < 0)
+ break;
+
+ rbe = ring_buffer_iter_peek(gtp_frame_iter[cpu], NULL);
+ if (rbe == NULL) {
+ /* It will not happen, just for safe. */
+ return -1;
+ }
+ tmp = ring_buffer_event_data(rbe);
+ if (trace == *(ULONGEST *) (tmp + FID_SIZE))
+ return cpu;
+
+ ring_buffer_read(gtp_frame_iter[cpu], NULL);
+ }
+#endif
+#ifdef GTP_RB
+ if (gtp_frame_current_num < 0) {
+ if (gtp_rb_read() != 0)
+ return -1;
+ }
+
+ while (1) {
+ if (gtp_frame_current_tpe == trace)
+ return 0;
+
+ if (gtp_rb_read() != 0)
+ break;
+ }
+#endif
+
+ return -1;
+}
+
+static int
+gtp_gdbrsp_qtframe(char *pkg)
+{
+ int ret = -1;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ int old_num = gtp_frame_current_num;
+#endif
+
+ if (gtp_start)
+ return -EBUSY;
+
+ if (gtp_gtpframe_pipe_pid >= 0)
+ return -EBUSY;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtframe: %s\n", pkg);
+#endif
+
+ if (atomic_read(>p_frame_create) == 0)
+ goto out;
+
+ if (strncmp(pkg, "pc:", 3) == 0) {
+ ULONGEST addr;
+
+ pkg += 3;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ hex2ulongest(pkg, &addr);
+
+ ret = gtp_frame_head_find_addr(1, (unsigned long)addr,
+ (unsigned long)addr);
+ } else if (strncmp(pkg, "tdp:", 4) == 0) {
+ ULONGEST trace;
+
+ pkg += 4;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ hex2ulongest(pkg, &trace);
+
+ ret = gtp_frame_head_find_trace(trace);
+ } else if (strncmp(pkg, "range:", 6) == 0) {
+ ULONGEST start, end;
+
+ pkg += 6;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg = hex2ulongest(pkg, &start);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ hex2ulongest(pkg, &end);
+
+ ret = gtp_frame_head_find_addr(1, (unsigned long)start,
+ (unsigned long)end);
+ } else if (strncmp(pkg, "outside:", 8) == 0) {
+ ULONGEST start, end;
+
+ pkg += 8;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg = hex2ulongest(pkg, &start);
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg++;
+ hex2ulongest(pkg, &end);
+
+ ret = gtp_frame_head_find_addr(0, (unsigned long)start,
+ (unsigned long)end);
+ } else {
+ ULONGEST num;
+
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ hex2ulongest(pkg, &num);
+
+ if (((int) num) < 0) {
+ /* Return to current. */
+#ifdef GTP_FRAME_SIMPLE
+ gtp_frame_current = NULL;
+ gtp_frame_current_num = -1;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ gtp_frame_iter_reset();
+#endif
+#ifdef GTP_RB
+ gtp_rb_read_reset();
+#endif
+
+ return 0;
+ }
+ ret = gtp_frame_head_find_num((int) num);
+ }
+
+out:
+ if (ret < 0) {
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ /* Set frame back to old_num. */
+ if (old_num < 0)
+#ifdef GTP_FTRACE_RING_BUFFER
+ gtp_frame_iter_reset();
+#endif
+#ifdef GTP_RB
+ gtp_rb_read_reset();
+#endif
+ else
+ gtp_frame_head_find_num(old_num);
+#endif
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "F-1");
+ gtp_rw_bufp += 3;
+ gtp_rw_size += 3;
+ } else {
+#ifdef GTP_FRAME_SIMPLE
+ gtp_frame_current_tpe = *(ULONGEST *)(gtp_frame_current
+ + FID_SIZE
+ + sizeof(char *));
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+ char *tmp;
+
+ rbe = ring_buffer_read(gtp_frame_iter[ret],
+ >p_frame_current_clock);
+ if (rbe == NULL) {
+ /* It will not happen, just for safe. */
+ ret = -1;
+ goto out;
+ }
+ gtp_frame_current_cpu = ret;
+ tmp = ring_buffer_event_data(rbe);
+ gtp_frame_current_tpe = *(ULONGEST *)(tmp + FID_SIZE);
+#endif
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "F%xT%x",
+ gtp_frame_current_num,
+ (unsigned int) gtp_frame_current_tpe);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ }
+ return 1;
+}
+
+static int
+gtp_gdbrsp_qtro(char *pkg)
+{
+ ULONGEST start, end;
+
+ gtpro_list_clear();
+
+ while (pkg[0]) {
+ pkg = hex2ulongest(pkg, &start);
+ if (pkg[0] != ',')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &end);
+ if (pkg[0])
+ pkg++;
+
+ if (gtpro_list_add((CORE_ADDR)start, (CORE_ADDR)end) == NULL)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qtdv(char *pkg)
+{
+ ULONGEST num, val;
+ struct gtp_var *var;
+ char *src;
+ char *src_no_val;
+ int src_no_val_size;
+ int per_cpu_id = 0;
+ struct gtp_var **per_cpu = NULL;
+ int per_cpu_alloced = 0;
+ int ret = -EINVAL;
+#ifdef CONFIG_PERF_EVENTS
+ enum pe_tv_id ptid = pe_tv_unknown;
+ struct pe_tv_s *pts = NULL;
+ int pts_alloced = 0;
+#endif
+
+ pkg = hex2ulongest(pkg, &num);
+ if (pkg[0] != ':')
+ goto error_out;
+ pkg++;
+ src = pkg;
+ pkg = hex2ulongest(pkg, &val);
+ if (pkg[0] != ':')
+ goto error_out;
+
+ if (GTP_VAR_IS_SPECIAL(num)) {
+ /* Change the value of special tv. */
+ var = gtp_var_find(num);
+ if (var)
+ var->val = val;
+ if (num == GTP_VAR_IGNORE_ERROR_ID)
+ gtp_start_ignore_error = (int)val;
+ else if (num == GTP_VAR_PIPE_TRACE_ID)
+ gtp_pipe_trace = (int)val;
+ else if (num == GTP_VAR_BT_ID)
+ gtp_bt_size = (int)val;
+
+ return 0;
+ }
+
+ /* src_no_val is not include the val but the ':' after it. */
+ src_no_val = pkg;
+ src_no_val_size = strlen(src_no_val);
+
+ pkg++;
+
+ var = gtp_var_find(num);
+ if (var)
+ goto error_out;
+
+ /* Check if this is a "pc_" or "per_cpu_" trace state variable. */
+ if (strncasecmp(pkg, "0:70635f", 8) == 0
+ || strncasecmp(pkg, "0:7065725f6370755f", 18) == 0) {
+ int name_size;
+ char *id_s;
+ int mul = 1;
+ struct gtp_var *tve;
+
+ if (strncasecmp(pkg, "0:70635f", 8) == 0)
+ pkg += 8;
+ else
+ pkg += 18;
+ name_size = strlen(pkg);
+
+ /* Get the cpu id of this variable. */
+ if (name_size % 2 != 0)
+ goto error_out;
+ for (id_s = pkg + name_size - 2; id_s > pkg; id_s -= 2) {
+ int i, j;
+
+ if (!hex2int(id_s[0], &i))
+ goto error_out;
+ if (!hex2int(id_s[1], &j))
+ goto error_out;
+ j |= (i << 4);
+ if (j < 0x30 || j > 0x39)
+ break;
+ j -= 0x30;
+ per_cpu_id += mul * j;
+ mul *= 10;
+ /* src_no_val_size will not include the cpu id. */
+ src_no_val_size -= 2;
+ }
+ if (mul == 1)
+ goto error_out;
+ if (per_cpu_id >= gtp_cpu_number) {
+ printk(KERN_WARNING "gtp_gdbrsp_qtdv: id %d is bigger "
+ "than cpu number %d.\n",
+ per_cpu_id, gtp_cpu_number);
+ goto error_out;
+ }
+
+ /* Find the per cpu array per_cpu. */
+ for (tve = gtp_var_list; tve; tve = tve->next) {
+ if (tve->per_cpu) {
+ char *gtp_var_src;
+ /* Let gtp_var_src point after the value. */
+ gtp_var_src = hex2ulongest(tve->src, NULL);
+
+ if (strncmp(gtp_var_src, src_no_val,
+ src_no_val_size) == 0) {
+ per_cpu = tve->per_cpu;
+ break;
+ }
+ }
+ }
+ if (per_cpu == NULL) {
+ per_cpu = kcalloc(gtp_cpu_number,
+ sizeof(struct gtp_var *),
+ GFP_KERNEL);
+ if (per_cpu == NULL) {
+ ret = -ENOMEM;
+ goto error_out;
+ }
+ per_cpu_alloced = 1;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtdv: Create a "
+ "new per_cpu list for %s and set var "
+ "to cpu %d.\n",
+ src_no_val, per_cpu_id);
+#endif
+ } else {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qtdv: Find a "
+ "per_cpu list for %s and set var "
+ "to cpu %d.\n",
+ src_no_val, per_cpu_id);
+#endif
+ }
+ } else {
+ /* Remove first "0:" for following code. */
+ if (strlen(pkg) <= 2)
+ goto error_out;
+ pkg += 2;
+ }
+
+ /* Check if this is a "pe_" OR "perf_event_" trace state variable. */
+ if (strncasecmp(pkg, "70655f", 6) == 0
+ || strncasecmp(pkg, "706572665f6576656e745f", 22) == 0) {
+#ifdef CONFIG_PERF_EVENTS
+ struct gtp_var *tve;
+
+ if (strncasecmp(pkg, "70655f", 6) == 0)
+ pkg += 6;
+ else
+ pkg += 22;
+
+ if (strncasecmp(pkg, "6370755f", 8) == 0) {
+ /* "cpu_" */
+ pkg += 8;
+ ptid = pe_tv_cpu;
+ } else if (strncasecmp(pkg, "747970655f", 10) == 0) {
+ /* "type_" */
+ pkg += 10;
+ ptid = pe_tv_type;
+ } else if (strncasecmp(pkg, "636f6e6669675f", 14) == 0) {
+ /* "config_" */
+ pkg += 14;
+ ptid = pe_tv_config;
+ } else if (strncasecmp(pkg, "656e5f", 6) == 0) {
+ /* "en_" */
+ pkg += 6;
+ ptid = pe_tv_en;
+ } else if (strncasecmp(pkg, "76616c5f", 8) == 0) {
+ /* "val_" */
+ pkg += 8;
+ ptid = pe_tv_val;
+ } else if (strncasecmp(pkg, "656e61626c65645f", 16) == 0) {
+ /* "enabled_" */
+ pkg += 16;
+ ptid = pe_tv_enabled;
+ } else if (strncasecmp(pkg, "72756e6e696e675f", 16) == 0) {
+ /* "running_" */
+ pkg += 16;
+ ptid = pe_tv_running;
+ } else
+ goto pe_format_error;
+
+ if (strlen(pkg) <= 0)
+ goto pe_format_error;
+
+ /* Find the pe_tv that name is pkg. */
+ for (tve = gtp_var_list; tve; tve = tve->next) {
+ if (tve->ptid != pe_tv_unknown) {
+ if (strcmp(tve->pts->name, pkg) == 0)
+ break;
+ }
+ }
+
+ if (tve)
+ pts = tve->pts;
+ else {
+ pts = kcalloc(1, sizeof(struct pe_tv_s), GFP_KERNEL);
+ if (pts == NULL) {
+ ret = -ENOMEM;
+ goto error_out;
+ }
+ pts_alloced = 1;
+ /* Init the value in pts to default value. */
+ pts->name = gtp_strdup(pkg, NULL);
+ if (per_cpu)
+ pts->cpu = per_cpu_id;
+ else
+ pts->cpu = -1;
+ pts->en = 0;
+ pts->attr.type = PERF_TYPE_HARDWARE;
+ pts->attr.config = PERF_COUNT_HW_CPU_CYCLES;
+ pts->attr.disabled = 1;
+ pts->attr.pinned = 1;
+ pts->attr.size = sizeof(struct perf_event_attr);
+ }
+
+ /* Set current val to pts. */
+ switch (ptid) {
+ case pe_tv_cpu:
+ pts->cpu = (int)(LONGEST)val;
+ break;
+ case pe_tv_type:
+ pts->attr.type = val;
+ break;
+ case pe_tv_config:
+ pts->attr.config = val;
+ break;
+ case pe_tv_en:
+ if (val) {
+ pts->attr.disabled = 0;
+ pts->en = 1;
+ } else {
+ pts->attr.disabled = 1;
+ pts->en = 0;
+ }
+ break;
+ case pe_tv_val:
+ case pe_tv_enabled:
+ case pe_tv_running:
+ break;
+ default:
+ goto pe_format_error;
+ break;
+ }
+
+ gtp_have_pc_pe = 1;
+#else
+ printk(KERN_WARNING "Current Kernel doesn't open "
+ "CONFIG_PERF_EVENTS\n");
+ ret = -ENXIO;
+ goto error_out;
+#endif
+ }
+
+#ifdef CONFIG_PERF_EVENTS
+ if (!gtp_var_add((unsigned int)num, (uint64_t)val, src,
+ per_cpu, per_cpu_id, ptid, pts)) {
+#else
+ if (!gtp_var_add((unsigned int)num, (uint64_t)val, src,
+ per_cpu, per_cpu_id)) {
+#endif
+ ret = -ENOMEM;
+ goto error_out;
+ }
+
+ return 0;
+
+#ifdef CONFIG_PERF_EVENTS
+pe_format_error:
+ printk(KERN_WARNING "The format of this perf event "
+ "trace state variables is not right.\n");
+#endif
+
+error_out:
+#ifdef CONFIG_PERF_EVENTS
+ if (pts_alloced)
+ kfree(pts);
+#endif
+ if (per_cpu_alloced)
+ kfree(per_cpu);
+ return ret;
+}
+
+static int
+gtp_gdbrsp_QT(char *pkg)
+{
+ int ret = 1;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_QT: %s\n", pkg);
+#endif
+
+ if (strcmp("init", pkg) == 0)
+ ret = gtp_gdbrsp_qtinit();
+ else if (strcmp("Stop", pkg) == 0)
+ ret = gtp_gdbrsp_qtstop();
+ else if (strcmp("Start", pkg) == 0)
+ ret = gtp_gdbrsp_qtstart();
+ else if (strncmp("DP:", pkg, 3) == 0)
+ ret = gtp_gdbrsp_qtdp(pkg + 3);
+ else if (strncmp("DPsrc:", pkg, 6) == 0)
+ ret = gtp_gdbrsp_qtdpsrc(pkg + 6);
+ else if (strncmp("Disconnected:", pkg, 13) == 0)
+ ret = gtp_gdbrsp_qtdisconnected(pkg + 13);
+ else if (strncmp("Buffer:", pkg, 7) == 0)
+ ret = gtp_gdbrsp_qtbuffer(pkg + 7);
+ else if (strncmp("Frame:", pkg, 6) == 0)
+ ret = gtp_gdbrsp_qtframe(pkg + 6);
+ else if (strncmp("ro:", pkg, 3) == 0)
+ ret = gtp_gdbrsp_qtro(pkg + 3);
+ else if (strncmp("DV:", pkg, 3) == 0)
+ ret = gtp_gdbrsp_qtdv(pkg + 3);
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_QT: return %d\n", ret);
+#endif
+
+ return ret;
+}
+
+static int
+gtp_get_status(struct gtp_entry *tpe, char *buf, int bufmax)
+{
+ int size = 0;
+ int tfnum = 0;
+ CORE_ADDR tmpaddr;
+
+#ifdef GTP_RB
+ if (GTP_RB_PAGE_IS_EMPTY) {
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (!gtp_frame) {
+#endif
+ snprintf(buf, bufmax, "tnotrun:0;");
+ buf += 10;
+ size += 10;
+ bufmax -= 10;
+ } else if (!tpe || (tpe && tpe->reason == gtp_stop_normal)) {
+ snprintf(buf, bufmax, "tstop:0;");
+ buf += 8;
+ size += 8;
+ bufmax -= 8;
+ } else {
+ char outtmp[100];
+
+ switch (tpe->reason) {
+ case gtp_stop_frame_full:
+ snprintf(buf, bufmax, "tfull:%lx;",
+ (unsigned long)tpe->num);
+ break;
+ case gtp_stop_efault:
+ snprintf(buf, bufmax, "terror:%s:%lx;",
+ string2hex("read memory false", outtmp),
+ (unsigned long)tpe->num);
+ break;
+ case gtp_stop_access_wrong_reg:
+ snprintf(buf, bufmax, "terror:%s:%lx;",
+ string2hex("access wrong register", outtmp),
+ (unsigned long)tpe->num);
+ break;
+ case gtp_stop_agent_expr_code_error:
+ snprintf(buf, bufmax, "terror:%s:%lx;",
+ string2hex("agent expression code error",
+ outtmp),
+ (unsigned long)tpe->num);
+ break;
+ case gtp_stop_agent_expr_stack_overflow:
+ snprintf(buf, bufmax, "terror:%s:%lx;",
+ string2hex("agent expression stack overflow",
+ outtmp),
+ (unsigned long)tpe->num);
+ break;
+ default:
+ buf[0] = '\0';
+ break;
+ }
+
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+ }
+
+ if (atomic_read(>p_frame_create)) {
+#ifdef GTP_FRAME_SIMPLE
+ char *tmp = gtp_frame_r_start;
+
+ do {
+ if (tmp == gtp_frame_end)
+ tmp = gtp_frame;
+
+ if (FID(tmp) == FID_HEAD)
+ tfnum++;
+
+ tmp = gtp_frame_next(tmp);
+ if (!tmp)
+ break;
+ } while (tmp != gtp_frame_w_start);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (gtp_start) {
+ /* XXX: It is just the number of entries. */
+ tfnum = (int)ring_buffer_entries(gtp_frame);
+ } else {
+ int old_num = gtp_frame_current_num;
+ int cpu;
+
+ gtp_frame_iter_reset();
+
+ for_each_online_cpu(cpu) {
+ char *tmp;
+ struct ring_buffer_event *rbe;
+
+ while (1) {
+ rbe = ring_buffer_read
+ (gtp_frame_iter[cpu], NULL);
+ if (rbe == NULL)
+ break;
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ tfnum++;
+ }
+ }
+
+ if (old_num == -1)
+ gtp_frame_iter_reset();
+ else if (old_num >= 0) {
+ gtp_frame_head_find_num(old_num);
+ ring_buffer_read
+ (gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ }
+ }
+#endif
+#ifdef GTP_RB
+ int cpu;
+ struct gtp_rb_walk_s rbws;
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ void *tmp;
+ unsigned long flags;
+
+ GTP_RB_LOCK_IRQ(rb, flags);
+ rbws.end = rb->w;
+ tmp = rb->r;
+ while (1) {
+ tmp = gtp_rb_walk(&rbws, tmp);
+ if (rbws.reason != gtp_rb_walk_new_entry)
+ break;
+ tfnum++;
+ tmp += FRAME_ALIGN(GTP_FRAME_HEAD_SIZE);
+ }
+ GTP_RB_UNLOCK_IRQ(rb, flags);
+ }
+#endif
+ }
+
+ snprintf(buf, bufmax, "tframes:%x;", tfnum);
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+ snprintf(buf, bufmax, "tcreated:%x;", atomic_read(>p_frame_create));
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+#ifdef GTP_FRAME_SIMPLE
+ snprintf(buf, bufmax, "tsize:%x;", GTP_FRAME_SIZE);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (gtp_frame)
+ snprintf(buf, bufmax, "tsize:%lx;",
+ ring_buffer_size(gtp_frame));
+ else
+ snprintf(buf, bufmax, "tsize:%x;",
+ GTP_FRAME_SIZE * num_online_cpus());
+#endif
+#ifdef GTP_RB
+ snprintf(buf, bufmax, "tsize:%lx;",
+ gtp_rb_page_count * GTP_RB_DATA_MAX * num_online_cpus());
+#endif
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+#ifdef GTP_FRAME_SIMPLE
+ spin_lock(>p_frame_lock);
+ if (gtp_frame_is_circular)
+ tmpaddr = 0;
+ else
+ tmpaddr = GTP_FRAME_SIZE - (gtp_frame_w_start - gtp_frame);
+ spin_unlock(>p_frame_lock);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ /* XXX: Ftrace ring buffer don't have interface to get the size of free
+ buffer. */
+ tmpaddr = 0;
+#endif
+#ifdef GTP_RB
+ if (atomic_read(>p_frame_create)) {
+ int cpu;
+
+ tmpaddr = 0;
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ void *tmp;
+ unsigned long flags;
+
+ GTP_RB_LOCK_IRQ(rb, flags);
+ tmpaddr += GTP_RB_END(rb->w) - rb->w;
+ for (tmp = GTP_RB_NEXT(rb->w);
+ GTP_RB_HEAD(tmp) != GTP_RB_HEAD(rb->r);
+ tmp = GTP_RB_NEXT(tmp))
+ tmpaddr += GTP_RB_DATA_MAX;
+ tmpaddr += rb->r - GTP_RB_DATA(rb->r);
+ GTP_RB_UNLOCK_IRQ(rb, flags);
+ }
+ } else {
+ tmpaddr = gtp_rb_page_count * GTP_RB_DATA_MAX
+ * num_online_cpus();
+ }
+#endif
+ snprintf(buf, bufmax, "tfree:%lx;", (unsigned long)tmpaddr);
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+ snprintf(buf, bufmax, "circular:%x;", gtp_circular);
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+ snprintf(buf, bufmax, "disconn:%x", gtp_disconnected_tracing);
+ size += strlen(buf);
+ bufmax -= strlen(buf);
+ buf += strlen(buf);
+
+ return size;
+}
+
+static int
+gtp_gdbrsp_qtstatus(void)
+{
+ struct gtp_entry *tpe;
+ int tmp;
+
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ if (tpe->reason != gtp_stop_normal)
+ break;
+ }
+
+ if (gtp_start && tpe) /* Tpe is stop, stop all tpes. */
+ gtp_gdbrsp_qtstop();
+
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "T%x;", gtp_start ? 1 : 0);
+ gtp_rw_bufp += 3;
+ gtp_rw_size += 3;
+
+ tmp = gtp_get_status(tpe, gtp_rw_bufp, GTP_RW_BUFP_MAX);
+ gtp_rw_bufp += tmp;
+ gtp_rw_size += tmp;
+
+ return 1;
+}
+
+#define GTP_REPORT_TRACEPOINT_MAX (1 + 16 + 1 + 16 + 1 + 1 + 1 + \
+ 20 + 1 + 16 + 1)
+
+static void
+gtp_report_tracepoint(struct gtp_entry *gtp, char *buf, int bufmax)
+{
+ snprintf(buf, bufmax, "T%lx:%lx:%c:%d:%lx", (unsigned long)gtp->num,
+ (unsigned long)gtp->addr, (gtp->disable ? 'D' : 'E'),
+ gtp->step, (unsigned long)gtp->pass);
+}
+
+static int
+gtp_report_action_max(struct gtp_entry *gtp, struct gtpsrc *action)
+{
+ return 1 + 16 + 1 + 16 + 1 + strlen(action->src) + 1;
+}
+
+static void
+gtp_report_action(struct gtp_entry *gtp, struct gtpsrc *action, char *buf,
+ int bufmax)
+{
+ snprintf(buf, bufmax, "A%lx:%lx:%s", (unsigned long)gtp->num,
+ (unsigned long)gtp->addr, action->src);
+}
+
+static int
+gtp_report_src_max(struct gtp_entry *gtp, struct gtpsrc *src)
+{
+ return 1 + 16 + 1 + 16 + 1 + strlen(src->src) + 1;
+}
+
+static void
+gtp_report_src(struct gtp_entry *gtp, struct gtpsrc *src, char *buf, int bufmax)
+{
+ snprintf(buf, bufmax, "Z%lx:%lx:%s", (unsigned long)gtp->num,
+ (unsigned long)gtp->addr, src->src);
+}
+
+static void
+gtp_current_set_check(void)
+{
+ if (current_gtp_src == NULL)
+ current_gtp = current_gtp->next;
+}
+
+static void
+gtp_current_action_check(void)
+{
+ if (current_gtp_action_cmd == NULL) {
+ current_gtp_src = current_gtp->src;
+ gtp_current_set_check();
+ }
+}
+
+static int
+gtp_gdbrsp_qtfp(void)
+{
+ if (gtp_list) {
+ current_gtp = gtp_list;
+ gtp_report_tracepoint(current_gtp, gtp_rw_bufp,
+ GTP_RW_BUFP_MAX);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ current_gtp_action_cmd = current_gtp->action_cmd;
+ gtp_current_action_check();
+ } else {
+ if (GTP_RW_BUFP_MAX > 1) {
+ gtp_rw_bufp[0] = 'l';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ }
+ }
+
+ return 1;
+}
+
+static int
+gtp_gdbrsp_qtsp(void)
+{
+ if (current_gtp_action_cmd) {
+ gtp_report_action(current_gtp, current_gtp_action_cmd,
+ gtp_rw_bufp, GTP_RW_BUFP_MAX);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ current_gtp_action_cmd = current_gtp_action_cmd->next;
+ gtp_current_action_check();
+ goto out;
+ }
+
+ if (current_gtp_src) {
+ gtp_report_src(current_gtp, current_gtp_src, gtp_rw_bufp,
+ GTP_RW_BUFP_MAX);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ current_gtp_src = current_gtp_src->next;
+ gtp_current_set_check();
+ goto out;
+ }
+
+ if (current_gtp) {
+ gtp_report_tracepoint(current_gtp, gtp_rw_bufp,
+ GTP_RW_BUFP_MAX);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ current_gtp_action_cmd = current_gtp->action_cmd;
+ gtp_current_action_check();
+ } else {
+ if (GTP_RW_BUFP_MAX > 1) {
+ gtp_rw_bufp[0] = 'l';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ }
+ }
+out:
+ return 1;
+}
+
+static void
+gtp_report_var(void)
+{
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "%x:%s", current_gtp_var->num,
+ current_gtp_var->src);
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+}
+
+static int
+gtp_gdbrsp_qtfsv(int f)
+{
+ if (f)
+ current_gtp_var = gtp_var_list;
+
+ if (current_gtp_var) {
+ gtp_report_var();
+ current_gtp_var = current_gtp_var->next;
+ } else {
+ if (GTP_RW_BUFP_MAX > 1) {
+ gtp_rw_bufp[0] = 'l';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ }
+ }
+
+ return 1;
+}
+
+static int
+gtp_gdbrsp_qtv(char *pkg)
+{
+ ULONGEST num;
+ struct gtp_var *var = NULL;
+ struct gtp_frame_var *vr = NULL;
+ uint64_t val = 0;
+
+ pkg = hex2ulongest(pkg, &num);
+
+ if (num == GTP_VAR_CPU_NUMBER_ID) {
+ val = (uint64_t)gtp_cpu_number;
+ goto output_value;
+ } else if (num == GTP_VAR_LAST_ERRNO_ID) {
+ val = (uint64_t)gtp_start_last_errno;
+ goto output_value;
+ } else if (num == GTP_VAR_IGNORE_ERROR_ID) {
+ val = (uint64_t)gtp_start_ignore_error;
+ goto output_value;
+ } else if (num == GTP_VAR_PIPE_TRACE_ID) {
+ val = (uint64_t)gtp_pipe_trace;
+ goto output_value;
+ } else if (num == GTP_VAR_VERSION_ID) {
+ val = (uint64_t)GTP_VERSION;
+ goto output_value;
+ } else if (num == GTP_VAR_BT_ID) {
+ val = (uint64_t)gtp_bt_size;
+ goto output_value;
+ }
+#ifdef GTP_RB
+ else if (num == GTP_VAR_GTP_RB_DISCARD_PAGE_NUMBER) {
+ val = (uint64_t)atomic_read(>p_rb_discard_page_number);
+ goto output_value;
+ }
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+ if (gtp_start || !gtp_frame_current) {
+#elif defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gtp_start || gtp_frame_current_num < 0) {
+#endif
+ if (num == GTP_VAR_CLOCK_ID) {
+ val = (uint64_t)GTP_LOCAL_CLOCK;
+ goto output_value;
+#ifdef CONFIG_X86
+ } else if (num == GTP_VAR_RDTSC_ID) {
+ unsigned long long a;
+ rdtscll(a);
+ val = (uint64_t)a;
+ goto output_value;
+#endif
+ } else if (num == GTP_VAR_XTIME_SEC_ID
+ || num == GTP_VAR_XTIME_NSEC_ID) {
+ struct timespec time;
+
+ getnstimeofday(&time);
+ if (num == GTP_VAR_XTIME_SEC_ID)
+ val = (uint64_t)time.tv_sec;
+ else
+ val = (uint64_t)time.tv_nsec;
+
+ goto output_value;
+ }
+
+ if (GTP_VAR_IS_SPECIAL(num))
+ goto out;
+ var = gtp_var_find(num);
+ if (var == NULL)
+ goto out;
+#ifdef CONFIG_PERF_EVENTS
+ if (var->ptid == pe_tv_val
+ || var->ptid == pe_tv_enabled
+ || var->ptid == pe_tv_running) {
+ if (gtp_start)
+ var->pts->val =
+ perf_event_read_value(var->pts->event,
+ &(var->pts->enabled),
+ &(var->pts->running));
+ switch (var->ptid) {
+ case pe_tv_val:
+ val = (uint64_t)(var->pts->val);
+ break;
+ case pe_tv_enabled:
+ val = (uint64_t)(var->pts->enabled);
+ break;
+ case pe_tv_running:
+ val = (uint64_t)(var->pts->running);
+ break;
+ default:
+ break;
+ }
+ goto out;
+ }
+#endif
+ val = var->val;
+ } else {
+#ifdef GTP_FRAME_SIMPLE
+ char *next;
+
+ for (next = *(char **)(gtp_frame_current + FID_SIZE); next;
+ next = *(char **)(next + FID_SIZE)) {
+ if (FID(next) == FID_VAR) {
+ vr = (struct gtp_frame_var *)
+ (next + FID_SIZE + sizeof(char *));
+ if (vr->num == (unsigned int)num)
+ goto while_stop;
+ }
+ }
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ int is_first = 1;
+ struct ring_buffer_event *rbe;
+ char *tmp;
+
+ /* Handle $cpu_id and $clock. */
+ if (GTP_VAR_AUTO_TRACEV(num)) {
+ if (num == GTP_VAR_CLOCK_ID)
+ val = gtp_frame_current_clock;
+ else if (num == GTP_VAR_CPU_ID)
+ val = gtp_frame_current_cpu;
+ goto output_value;
+ }
+re_find:
+ while (1) {
+ rbe = ring_buffer_iter_peek
+ (gtp_frame_iter[gtp_frame_current_cpu], NULL);
+ if (rbe == NULL)
+ break;
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ break;
+ if (FID(tmp) == FID_VAR) {
+ vr = (struct gtp_frame_var *)(tmp + FID_SIZE);
+ if (vr->num == (unsigned int)num)
+ goto while_stop;
+ }
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ }
+ if (is_first) {
+ gtp_frame_head_find_num(gtp_frame_current_num);
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ is_first = 0;
+ goto re_find;
+ }
+#endif
+#ifdef GTP_RB
+ struct gtp_rb_walk_s rbws;
+ char *tmp;
+
+ /* Handle $cpu_id. */
+ if (GTP_VAR_AUTO_TRACEV(num)) {
+ val = gtp_frame_current_rb->cpu;
+ goto output_value;
+ }
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID | GTP_RB_WALK_CHECK_TYPE;
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ rbws.type = FID_VAR;
+ tmp = gtp_frame_current_rb->rp;
+
+ while (1) {
+ tmp = gtp_rb_walk(&rbws, tmp);
+ if (rbws.reason != gtp_rb_walk_type)
+ break;
+
+ vr = (struct gtp_frame_var *)(tmp + FID_SIZE);
+ if (vr->num == (unsigned int)num)
+ goto while_stop;
+
+ tmp += FRAME_ALIGN(GTP_FRAME_VAR_SIZE);
+ }
+#endif
+ vr = NULL;
+while_stop:
+ if (vr)
+ val = vr->val;
+ }
+
+out:
+ if (var || vr) {
+output_value:
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "V%08x%08x",
+ (unsigned int) (val >> 32),
+ (unsigned int) (val & 0xffffffff));
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ } else {
+ if (GTP_RW_BUFP_MAX > 1) {
+ gtp_rw_bufp[0] = 'U';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ }
+ }
+
+ return 1;
+}
+
+static int
+gtp_gdbrsp_qT(char *pkg)
+{
+ int ret = 1;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_qT: %s\n", pkg);
+#endif
+
+ if (strcmp("Status", pkg) == 0)
+ ret = gtp_gdbrsp_qtstatus();
+ else if (strcmp("fP", pkg) == 0)
+ ret = gtp_gdbrsp_qtfp();
+ else if (strcmp("sP", pkg) == 0)
+ ret = gtp_gdbrsp_qtsp();
+ else if (strcmp("fV", pkg) == 0)
+ ret = gtp_gdbrsp_qtfsv(1);
+ else if (strcmp("sV", pkg) == 0)
+ ret = gtp_gdbrsp_qtfsv(0);
+ else if (strncmp("V:", pkg, 2) == 0)
+ ret = gtp_gdbrsp_qtv(pkg + 2);
+
+ return ret;
+}
+
+#ifdef GTP_RB
+static char *gtp_traceframe_info;
+static unsigned int gtp_traceframe_info_len;
+
+static int gtp_modules_traceframe_info_need_get;
+static char *gtp_modules_traceframe_info;
+static unsigned int gtp_modules_traceframe_info_len;
+
+static int
+gtp_modules_traceframe_info_get(void)
+{
+ struct module *mod;
+ struct gtp_realloc_s grs;
+ int ret = 0;
+
+ gtp_realloc_alloc(&grs, 0);
+
+ if (gtp_modules_traceframe_info_len > 0) {
+ vfree(gtp_modules_traceframe_info);
+ gtp_modules_traceframe_info_len = 0;
+ }
+
+ mutex_lock(&module_mutex);
+ list_for_each_entry_rcu(mod, &(THIS_MODULE->list), list) {
+ if (__module_address((unsigned long)mod)) {
+ char buf[70];
+
+ snprintf(buf, 70,
+ "<memory start=\"0x%llx\" length=\"0x%llx\"/>\n",
+ (ULONGEST)mod->module_core,
+ (ULONGEST)mod->core_text_size);
+ ret = gtp_realloc_str(&grs, buf, 0);
+ if (ret)
+ goto out;
+ }
+ }
+ gtp_modules_traceframe_info = grs.buf;
+ gtp_modules_traceframe_info_len = grs.size;
+out:
+ mutex_unlock(&module_mutex);
+ return ret;
+}
+
+static int
+gtp_traceframe_info_get(void)
+{
+ struct gtp_realloc_s grs;
+ int ret;
+ struct gtp_rb_walk_s rbws;
+ char *tmp;
+
+ if (gtp_traceframe_info_len > 0) {
+ vfree(gtp_traceframe_info);
+ gtp_traceframe_info_len = 0;
+ }
+ /* 40 is size for "<traceframe-info>\n</traceframe-info>\n" */
+ ret = gtp_realloc_alloc(&grs, 40);
+ if (ret != 0)
+ return ret;
+
+ ret = gtp_realloc_str(&grs, "<traceframe-info>\n", 0);
+ if (ret != 0)
+ return ret;
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE
+ | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID
+ | GTP_RB_WALK_CHECK_TYPE;
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ rbws.type = FID_MEM;
+ tmp = gtp_frame_current_rb->rp;
+
+ while (1) {
+ struct gtp_frame_mem *mr;
+ char buf[70];
+
+ tmp = gtp_rb_walk(&rbws, tmp);
+ if (rbws.reason != gtp_rb_walk_type)
+ break;
+ mr = (struct gtp_frame_mem *) (tmp + FID_SIZE);
+ snprintf(buf, 70,
+ "<memory start=\"0x%llx\" length=\"0x%llx\"/>\n",
+ (ULONGEST)mr->addr, (ULONGEST)mr->size);
+ ret = gtp_realloc_str(&grs, buf, 0);
+ if (ret != 0)
+ return ret;
+ tmp += FRAME_ALIGN(GTP_FRAME_MEM_SIZE + mr->size);
+ }
+
+ if (gtp_modules_traceframe_info_need_get) {
+ int ret = gtp_modules_traceframe_info_get();
+ if (ret != 0)
+ return ret;
+ gtp_modules_traceframe_info_need_get = 0;
+ }
+ if (gtp_modules_traceframe_info_len > 0) {
+ tmp = gtp_realloc(&grs, gtp_modules_traceframe_info_len, 0);
+ if (tmp == NULL)
+ return -ENOMEM;
+ memcpy(tmp, gtp_modules_traceframe_info,
+ gtp_modules_traceframe_info_len);
+ }
+
+ ret = gtp_realloc_str(&grs, "</traceframe-info>\n", 1);
+ if (ret != 0)
+ return ret;
+
+ gtp_traceframe_info = grs.buf;
+ gtp_traceframe_info_len = grs.size;
+
+ return 0;
+}
+
+static int
+gtp_gdbrsp_qxfer_traceframe_info_read(char *pkg)
+{
+ ULONGEST offset, len;
+
+ if (gtp_start || gtp_frame_current_num < 0)
+ return -EINVAL;
+
+ pkg = hex2ulongest(pkg, &offset);
+ if (pkg[0] != ',')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &len);
+ if (len == 0)
+ return -EINVAL;
+
+ if (GTP_RW_BUFP_MAX < 10)
+ return -EINVAL;
+
+ if (offset == 0) {
+ int ret = gtp_traceframe_info_get();
+ if (ret != 0)
+ return ret;
+ }
+
+ if (len > GTP_RW_BUFP_MAX - 1)
+ len = GTP_RW_BUFP_MAX - 1;
+
+ if (len >= gtp_traceframe_info_len - offset) {
+ len = gtp_traceframe_info_len - offset;
+ gtp_rw_bufp[0] = 'l';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ } else {
+ if (GTP_RW_BUFP_MAX > 1) {
+ gtp_rw_bufp[0] = 'm';
+ gtp_rw_size += 1;
+ gtp_rw_bufp += 1;
+ }
+ }
+
+ memcpy(gtp_rw_bufp, gtp_traceframe_info + offset, len);
+ gtp_rw_size += len;
+ gtp_rw_bufp += len;
+
+ return 1;
+}
+#endif
+
+static uint8_t gtp_m_buffer[0xffff];
+
+static int
+gtp_gdbrsp_m(char *pkg)
+{
+ int i;
+ ULONGEST addr, len;
+
+ /* Get add and len. */
+ if (pkg[0] == '\0')
+ return -EINVAL;
+ pkg = hex2ulongest(pkg, &addr);
+ if (pkg[0] != ',')
+ return -EINVAL;
+ pkg++;
+ pkg = hex2ulongest(pkg, &len);
+ if (len == 0)
+ return -EINVAL;
+ len &= 0xffff;
+ len = (ULONGEST) min((int)(GTP_RW_BUFP_MAX / 2),
+ (int)len);
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: addr = 0x%lx len = %d\n",
+ (unsigned long) addr, (int) len);
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+ if (gtp_start || !gtp_frame_current) {
+#elif defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gtp_start || gtp_frame_current_num < 0) {
+#endif
+ if (probe_kernel_read(gtp_m_buffer, (void *)(CORE_ADDR)addr,
+ (size_t)len))
+ return -EFAULT;
+ } else {
+#ifdef GTP_FRAME_SIMPLE
+ char *next;
+#endif
+ int ret;
+
+ /* XXX: Issue 1: The following part is for gtpro support.
+ It is not available because it make disassemble cannot
+ work when select a trace frame. */
+
+#if 0
+ struct gtpro_entry *gtroe;
+
+ memset(gtp_m_buffer, 0, len);
+
+ /* Read the gtpro. */
+ for (gtroe = gtpro_list; gtroe; gtroe = gtroe->next) {
+ CORE_ADDR cur_start, cur_end;
+
+ cur_start = max(gtroe->start, (CORE_ADDR)addr);
+ cur_end = min(gtroe->end, ((CORE_ADDR)(addr + len)));
+ if (cur_start < cur_end) {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: ro read "
+ "start = 0x%lx end = 0x%lx\n",
+ (unsigned long) cur_start,
+ (unsigned long) cur_end);
+#endif
+ if (probe_kernel_read(gtp_m_buffer,
+ (void *)cur_start,
+ (size_t)(cur_end
+ - cur_start)))
+ return -EFAULT;
+ }
+ }
+#endif
+ ret = probe_kernel_read(gtp_m_buffer, (void *)(CORE_ADDR)addr,
+ (size_t)len);
+#ifdef GTP_FRAME_SIMPLE
+ for (next = *(char **)(gtp_frame_current + FID_SIZE); next;
+ next = *(char **)(next + FID_SIZE)) {
+ if (FID(next) == FID_MEM) {
+ struct gtp_frame_mem *mr;
+ ULONGEST cur_start, cur_end;
+ uint8_t *buf;
+
+ mr = (struct gtp_frame_mem *)
+ (next + FID_SIZE + sizeof(char *));
+ buf = next + GTP_FRAME_MEM_SIZE;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: section "
+ "addr = 0x%lx size = %lu\n",
+ (unsigned long) mr->addr,
+ (unsigned long) mr->size);
+#endif
+ cur_start = max(((ULONGEST)mr->addr), addr);
+ cur_end = min(((ULONGEST)mr->addr
+ + mr->size),
+ (addr + len));
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: read "
+ "start = 0x%lx end = 0x%lx\n",
+ (unsigned long) cur_start,
+ (unsigned long) cur_end);
+#endif
+ if (cur_start < cur_end) {
+ memcpy(gtp_m_buffer,
+ buf + cur_start - mr->addr,
+ cur_end - cur_start);
+ ret = 0;
+ }
+ }
+ }
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ gtp_frame_head_find_num(gtp_frame_current_num);
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu], NULL);
+
+ while (1) {
+ struct ring_buffer_event *rbe;
+ char *tmp;
+
+ rbe = ring_buffer_iter_peek
+ (gtp_frame_iter[gtp_frame_current_cpu], NULL);
+ if (rbe == NULL)
+ break;
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ break;
+ if (FID(tmp) == FID_MEM) {
+ struct gtp_frame_mem *mr;
+ ULONGEST cur_start, cur_end;
+ uint8_t *buf;
+
+ mr = (struct gtp_frame_mem *)
+ (tmp + FID_SIZE);
+ buf = tmp + GTP_FRAME_MEM_SIZE;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: section "
+ "addr = 0x%lx size = %lu\n",
+ (unsigned long) mr->addr,
+ (unsigned long) mr->size);
+#endif
+ cur_start = max(((ULONGEST)mr->addr), addr);
+ cur_end = min(((ULONGEST)mr->addr
+ + mr->size),
+ (addr + len));
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: read "
+ "start = 0x%lx end = 0x%lx\n",
+ (unsigned long) cur_start,
+ (unsigned long) cur_end);
+#endif
+ if (cur_start < cur_end) {
+ memcpy(gtp_m_buffer,
+ buf + cur_start - mr->addr,
+ cur_end - cur_start);
+ ret = 0;
+ }
+ }
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ }
+#endif
+#ifdef GTP_RB
+ {
+ struct gtp_rb_walk_s rbws;
+ char *tmp;
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE
+ | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID
+ | GTP_RB_WALK_CHECK_TYPE;
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ rbws.type = FID_MEM;
+ tmp = gtp_frame_current_rb->rp;
+
+ while (1) {
+ struct gtp_frame_mem *mr;
+ ULONGEST cur_start, cur_end;
+ uint8_t *buf;
+
+ tmp = gtp_rb_walk(&rbws, tmp);
+ if (rbws.reason != gtp_rb_walk_type)
+ break;
+
+ mr = (struct gtp_frame_mem *) (tmp + FID_SIZE);
+ buf = tmp + GTP_FRAME_MEM_SIZE;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: section "
+ "addr = 0x%lx size = %lu\n",
+ (unsigned long) mr->addr,
+ (unsigned long) mr->size);
+#endif
+ cur_start = max(((ULONGEST)mr->addr), addr);
+ cur_end = min(((ULONGEST)mr->addr
+ + mr->size),
+ (addr + len));
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: read "
+ "start = 0x%lx end = 0x%lx\n",
+ (unsigned long) cur_start,
+ (unsigned long) cur_end);
+#endif
+ if (cur_start < cur_end) {
+ memcpy(gtp_m_buffer,
+ buf + cur_start - mr->addr,
+ cur_end - cur_start);
+ ret = 0;
+ }
+
+ tmp += FRAME_ALIGN(GTP_FRAME_MEM_SIZE
+ + mr->size);
+ }
+ }
+#endif
+ if (ret)
+ return -EFAULT;
+ }
+
+ for (i = 0; i < (int)len; i++) {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_gdbrsp_m: %d %02x\n", i, gtp_m_buffer[i]);
+#endif
+ sprintf(gtp_rw_bufp, "%02x", gtp_m_buffer[i]);
+ gtp_rw_bufp += 2;
+ gtp_rw_size += 2;
+ }
+
+ return 1;
+}
+
+static int
+gtp_gdbrsp_g(void)
+{
+#ifdef GTP_FRAME_SIMPLE
+ char *next;
+#endif
+ struct pt_regs *regs;
+
+ if (GTP_RW_BUFP_MAX < GTP_REG_ASCII_SIZE)
+ return -E2BIG;
+
+#ifdef GTP_FRAME_SIMPLE
+ if (gtp_start || !gtp_frame_current) {
+#elif defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gtp_start || gtp_frame_current_num < 0) {
+#endif
+ memset(gtp_rw_bufp, '0', GTP_REG_ASCII_SIZE);
+ goto out;
+ }
+
+ /* Get the regs. */
+ regs = NULL;
+#ifdef GTP_FRAME_SIMPLE
+ for (next = *(char **)(gtp_frame_current + FID_SIZE); next;
+ next = *(char **)(next + FID_SIZE)) {
+ if (FID(next) == FID_REG) {
+ regs = (struct pt_regs *)
+ (next + FID_SIZE + sizeof(char *));
+ break;
+ }
+ }
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ {
+ int is_first = 1;
+ struct ring_buffer_event *rbe;
+ char *tmp;
+
+re_find:
+ while (1) {
+ rbe = ring_buffer_iter_peek
+ (gtp_frame_iter[gtp_frame_current_cpu], NULL);
+ if (rbe == NULL)
+ break;
+ tmp = ring_buffer_event_data(rbe);
+ if (FID(tmp) == FID_HEAD)
+ break;
+ if (FID(tmp) == FID_REG) {
+ regs = (struct pt_regs *)(tmp + FID_SIZE);
+ is_first = 0;
+ break;
+ }
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ }
+ if (is_first) {
+ gtp_frame_head_find_num(gtp_frame_current_num);
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu],
+ NULL);
+ is_first = 0;
+ goto re_find;
+ }
+ }
+#endif
+#ifdef GTP_RB
+ {
+ struct gtp_rb_walk_s rbws;
+ char *tmp;
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID | GTP_RB_WALK_CHECK_TYPE;
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ rbws.type = FID_REG;
+ tmp = gtp_rb_walk(&rbws, gtp_frame_current_rb->rp);
+ if (rbws.reason == gtp_rb_walk_type)
+ regs = (struct pt_regs *)(tmp + FID_SIZE);
+ }
+#endif
+ if (regs)
+ gtp_regs2ascii(regs, gtp_rw_bufp);
+ else {
+ struct pt_regs pregs;
+ struct gtp_entry *tpe;
+
+ memset(&pregs, '\0', sizeof(struct pt_regs));
+ tpe = gtp_list_find_without_addr(gtp_frame_current_tpe);
+ if (tpe)
+ GTP_REGS_PC(&pregs) = (unsigned long)tpe->addr;
+ gtp_regs2ascii(&pregs, gtp_rw_bufp);
+ }
+out:
+ gtp_rw_bufp += GTP_REG_ASCII_SIZE;
+ gtp_rw_size += GTP_REG_ASCII_SIZE;
+
+ return 1;
+}
+
+static DEFINE_SEMAPHORE(gtp_rw_lock);
+static DECLARE_WAIT_QUEUE_HEAD(gtp_rw_wq);
+static unsigned int gtp_rw_count;
+static unsigned int gtp_frame_count;
+
+static void
+gtp_frame_count_release(void)
+{
+ gtp_frame_count--;
+ if (gtp_frame_count == 0) {
+ if (!gtp_disconnected_tracing) {
+ gtp_gdbrsp_qtstop();
+ gtp_gdbrsp_qtinit();
+#ifdef GTP_RB
+ if (!GTP_RB_PAGE_IS_EMPTY)
+ gtp_rb_page_free();
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (gtp_frame) {
+#ifdef GTP_FRAME_SIMPLE
+ vfree(gtp_frame);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_free(gtp_frame);
+#endif
+ gtp_frame = NULL;
+ }
+#endif
+ }
+ }
+}
+
+static int
+gtp_open(struct inode *inode, struct file *file)
+{
+ int ret = 0;
+
+ down(>p_rw_lock);
+ if (gtp_gtp_pid >= 0) {
+ if (get_current()->pid != gtp_gtp_pid) {
+ ret = -EBUSY;
+ goto out;
+ }
+ }
+ gtp_noack_mode = 0;
+
+ if (gtp_rw_count == 0) {
+ gtp_read_ack = 0;
+ gtp_rw_buf = vmalloc(GTP_RW_MAX);
+ if (!gtp_rw_buf) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+ gtp_rw_count++;
+
+ gtp_frame_count++;
+
+ gtp_gtp_pid_count++;
+ if (gtp_gtp_pid < 0)
+ gtp_gtp_pid = get_current()->pid;
+
+out:
+ up(>p_rw_lock);
+ return ret;
+}
+
+static int
+gtp_release(struct inode *inode, struct file *file)
+{
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_release\n");
+#endif
+
+ down(>p_rw_lock);
+ gtp_rw_count--;
+ if (gtp_rw_count == 0)
+ vfree(gtp_rw_buf);
+
+ gtp_frame_count_release();
+
+ gtp_gtp_pid_count--;
+ if (gtp_gtp_pid_count == 0)
+ gtp_gtp_pid = -1;
+
+ up(>p_rw_lock);
+
+ return 0;
+}
+
+static long
+gtp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_ioctl: %x\n", cmd);
+#endif
+
+ return 0;
+}
+
+static ssize_t
+gtp_write(struct file *file, const char __user *buf, size_t size,
+ loff_t *ppos)
+{
+ char *rsppkg = NULL;
+ int i, ret;
+ unsigned char csum;
+
+ if (down_interruptible(>p_rw_lock))
+ return -EINTR;
+
+ if (size == 0) {
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_write: try write 0 size.\n");
+#endif
+ goto error_out;
+ }
+
+ size = min_t(size_t, size, GTP_RW_MAX);
+ if (copy_from_user(gtp_rw_buf, buf, size)) {
+ size = -EFAULT;
+ goto error_out;
+ }
+
+ if (gtp_rw_buf[0] == '+' || gtp_rw_buf[0] == '-'
+ || gtp_rw_buf[0] == '\3') {
+ if (gtp_rw_buf[0] == '+')
+ gtp_rw_size = 0;
+ size = 1;
+ goto out;
+ }
+
+ if (size < 4) {
+ size = -EINVAL;
+ goto error_out;
+ }
+ /* Check format and get the rsppkg. */
+ for (i = 0; i < size - 2; i++) {
+ if (gtp_rw_buf[i] == '$')
+ rsppkg = gtp_rw_buf + i + 1;
+ else if (gtp_rw_buf[i] == '#')
+ break;
+ }
+ if (rsppkg && gtp_rw_buf[i] == '#') {
+ /* Format is OK. Check crc. */
+ if (gtp_noack_mode < 1)
+ gtp_read_ack = 1;
+ size = i + 3;
+ gtp_rw_buf[i] = '\0';
+ } else {
+ printk(KERN_WARNING "gtp_write: format error\n");
+ size = -EINVAL;
+ goto error_out;
+ }
+
+ wake_up_interruptible_nr(>p_rw_wq, 1);
+
+ up(>p_rw_lock);
+ if (down_interruptible(>p_rw_lock))
+ return -EINTR;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_write: %s\n", rsppkg);
+#endif
+
+ /* Handle rsppkg and put return to gtp_rw_buf. */
+ gtp_rw_buf[0] = '$';
+ gtp_rw_bufp = gtp_rw_buf + 1;
+ gtp_rw_size = 0;
+ ret = 1;
+ switch (rsppkg[0]) {
+ case '?':
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "S05");
+ gtp_rw_bufp += 3;
+ gtp_rw_size += 3;
+ break;
+ case 'g':
+ ret = gtp_gdbrsp_g();
+ break;
+ case 'm':
+ ret = gtp_gdbrsp_m(rsppkg + 1);
+ break;
+ case 'Q':
+ if (rsppkg[1] == 'T')
+ ret = gtp_gdbrsp_QT(rsppkg + 2);
+ else if (strncmp("QStartNoAckMode", rsppkg, 15) == 0) {
+ ret = 0;
+ gtp_noack_mode = -1;
+ }
+ break;
+ case 'q':
+ if (rsppkg[1] == 'T')
+ ret = gtp_gdbrsp_qT(rsppkg + 2);
+ else if (strncmp("qSupported", rsppkg, 10) == 0) {
+#ifdef GTP_RB
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX,
+ "QStartNoAckMode+;ConditionalTracepoints+;"
+ "TracepointSource+;DisconnectedTracing+;"
+ "qXfer:traceframe-info:read+;");
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX,
+ "QStartNoAckMode+;ConditionalTracepoints+;"
+ "TracepointSource+;DisconnectedTracing+;");
+#endif
+ gtp_rw_size += strlen(gtp_rw_bufp);
+ gtp_rw_bufp += strlen(gtp_rw_bufp);
+ ret = 1;
+ }
+#ifdef GTP_RB
+ else if (strncmp("qXfer:traceframe-info:read::",
+ rsppkg, 28) == 0)
+ ret = gtp_gdbrsp_qxfer_traceframe_info_read(rsppkg
+ + 28);
+#endif
+ break;
+ case 's':
+ case 'S':
+ case 'c':
+ case 'C':
+ ret = -1;
+ break;
+ }
+ if (ret == 0) {
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "OK");
+ gtp_rw_bufp += 2;
+ gtp_rw_size += 2;
+ } else if (ret < 0) {
+ snprintf(gtp_rw_bufp, GTP_RW_BUFP_MAX, "E%02x", -ret);
+ gtp_rw_bufp += 3;
+ gtp_rw_size += 3;
+ }
+
+ gtp_rw_bufp[0] = '#';
+ csum = 0;
+ for (i = 1; i < gtp_rw_size + 1; i++)
+ csum += gtp_rw_buf[i];
+ gtp_rw_bufp[1] = INT2CHAR(csum >> 4);
+ gtp_rw_bufp[2] = INT2CHAR(csum & 0x0f);
+ gtp_rw_bufp = gtp_rw_buf;
+ gtp_rw_size += 4;
+
+out:
+ wake_up_interruptible_nr(>p_rw_wq, 1);
+error_out:
+ up(>p_rw_lock);
+ return size;
+}
+
+static ssize_t
+gtp_read(struct file *file, char __user *buf, size_t size,
+ loff_t *ppos)
+{
+ int err;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_read\n");
+#endif
+
+ if (size == 0)
+ goto out;
+
+ if (down_interruptible(>p_rw_lock))
+ return -EINTR;
+
+ if (gtp_noack_mode < 1 && gtp_read_ack) {
+ err = put_user('+', buf);
+ if (err) {
+ size = -err;
+ goto out;
+ }
+ gtp_read_ack = 0;
+ size = 1;
+ if (gtp_noack_mode < 0)
+ gtp_noack_mode = 1;
+ goto out;
+ }
+
+ size = min(gtp_rw_size, size);
+ if (size == 0)
+ goto out;
+ if (copy_to_user(buf, gtp_rw_bufp, size)) {
+ size = -EFAULT;
+ goto out;
+ }
+ gtp_rw_bufp += size;
+ gtp_rw_size -= size;
+
+out:
+ up(>p_rw_lock);
+ return size;
+}
+
+static unsigned int
+gtp_poll(struct file *file, poll_table *wait)
+{
+ unsigned int mask = POLLOUT | POLLWRNORM;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtp_poll\n");
+#endif
+
+ down(>p_rw_lock);
+ poll_wait(file, >p_rw_wq, wait);
+ if (gtp_read_ack || gtp_rw_size)
+ mask |= POLLIN | POLLRDNORM;
+ up(>p_rw_lock);
+
+ return mask;
+}
+
+static int
+gtp_frame2file_r(struct gtp_realloc_s *grs, uint32_t *data_size, char *frame)
+{
+ char *wbuf;
+
+ wbuf = gtp_realloc(grs, GTP_REG_BIN_SIZE + 1, 0);
+ if (!wbuf)
+ return -1;
+
+ wbuf[0] = 'R';
+#ifdef GTP_FRAME_SIMPLE
+ gtp_regs2bin((struct pt_regs *)(frame + FID_SIZE + sizeof(char *)),
+ wbuf + 1);
+#endif
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ gtp_regs2bin((struct pt_regs *)(frame + FID_SIZE), wbuf + 1);
+#endif
+
+ *data_size += GTP_REG_BIN_SIZE + 1;
+
+ return 0;
+}
+
+static int
+gtp_frame2file_m(struct gtp_realloc_s *grs, uint32_t *data_size, char *frame)
+{
+ struct gtp_frame_mem *mr;
+ uint8_t *buf;
+ ULONGEST addr;
+ size_t remaining;
+
+#ifdef GTP_FRAME_SIMPLE
+ mr = (struct gtp_frame_mem *) (frame + FID_SIZE + sizeof(char *));
+#endif
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ mr = (struct gtp_frame_mem *) (frame + FID_SIZE);
+#endif
+ buf = frame + GTP_FRAME_MEM_SIZE;
+ addr = mr->addr;
+ remaining = mr->size;
+
+ while (remaining > 0) {
+ uint16_t blocklen;
+ char *wbuf;
+ size_t sp;
+
+ blocklen = remaining > 65535 ? 65535 : remaining;
+
+ sp = 1 + sizeof(addr) + sizeof(blocklen) + blocklen;
+ wbuf = gtp_realloc(grs, sp, 0);
+ if (!wbuf)
+ return -1;
+
+ wbuf[0] = 'M';
+ wbuf += 1;
+
+ memcpy(wbuf, &addr, sizeof(addr));
+ wbuf += sizeof(addr);
+
+ memcpy(wbuf, &blocklen, sizeof(blocklen));
+ wbuf += sizeof(blocklen);
+
+ memcpy(wbuf, buf, blocklen);
+
+ addr += blocklen;
+ remaining -= blocklen;
+ buf += blocklen;
+
+ *data_size += sp;
+ }
+
+ return 0;
+}
+
+static int
+gtp_frame2file_v(struct gtp_realloc_s *grs, uint32_t *data_size, char *frame)
+{
+ struct gtp_frame_var *vr;
+ size_t sp = 1 + sizeof(unsigned int)
+ + sizeof(uint64_t);
+ char *wbuf;
+
+ wbuf = gtp_realloc(grs, sp, 0);
+ if (!wbuf)
+ return -1;
+
+#ifdef GTP_FRAME_SIMPLE
+ vr = (struct gtp_frame_var *) (frame + FID_SIZE + sizeof(char *));
+#endif
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ vr = (struct gtp_frame_var *) (frame + FID_SIZE);
+#endif
+
+ wbuf[0] = 'V';
+ wbuf += 1;
+
+ memcpy(wbuf, &vr->num, sizeof(unsigned int));
+ wbuf += sizeof(unsigned int);
+
+ memcpy(wbuf, &vr->val, sizeof(uint64_t));
+ wbuf += sizeof(uint64_t);
+
+ *data_size += sp;
+
+ return 0;
+}
+
+static int
+#ifdef GTP_FRAME_SIMPLE
+gtp_frame2file(struct gtp_realloc_s *grs, char *frame)
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+gtp_frame2file(struct gtp_realloc_s *grs, int cpu)
+#endif
+#ifdef GTP_RB
+/* gtp_frame_current_rb will step inside this function. */
+gtp_frame2file(struct gtp_realloc_s *grs)
+#endif
+{
+ int16_t *tmp16p;
+ char *next;
+ char *wbuf;
+ uint32_t data_size;
+#ifdef GTP_FTRACE_RING_BUFFER
+ struct ring_buffer_event *rbe;
+ u64 clock;
+#endif
+#ifdef GTP_RB
+ struct gtp_rb_walk_s rbws;
+#endif
+
+ /* Head. */
+ tmp16p = (int16_t *)gtp_realloc(grs, 2, 0);
+ if (!tmp16p)
+ return -1;
+#ifdef GTP_FRAME_SIMPLE
+ *tmp16p = (int16_t)*(ULONGEST *)(frame + FID_SIZE + sizeof(char *));
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ rbe = ring_buffer_read(gtp_frame_iter[cpu], &clock);
+ if (rbe == NULL) {
+ /* It will not happen, just for safe. */
+ return -1;
+ }
+ next = ring_buffer_event_data(rbe);
+ *tmp16p = (int16_t)*(ULONGEST *)(next + FID_SIZE);
+#endif
+#ifdef GTP_RB
+ *tmp16p = (int16_t)gtp_frame_current_tpe;
+#endif
+ /* This part is for the data_size. */
+ wbuf = gtp_realloc(grs, 4, 0);
+ if (!wbuf)
+ return -1;
+
+ /* Body. */
+ data_size = 0;
+
+#ifdef GTP_FTRACE_RING_BUFFER
+ {
+ /* Handle $cpu_id and $clock. */
+ struct gtp_frame_var *vr;
+ char frame[GTP_FRAME_VAR_SIZE];
+
+ vr = (struct gtp_frame_var *) (frame + FID_SIZE);
+ vr->num = GTP_VAR_CLOCK_ID;
+ vr->val = clock;
+ if (gtp_frame2file_v(grs, &data_size, frame))
+ return -1;
+ vr->num = GTP_VAR_CPU_ID;
+ vr->val = cpu;
+ if (gtp_frame2file_v(grs, &data_size, frame))
+ return -1;
+ }
+#endif
+
+#ifdef GTP_RB
+ {
+ /* Handle $cpu_id. */
+ struct gtp_frame_var *vr;
+ char tmp[GTP_FRAME_VAR_SIZE];
+
+ vr = (struct gtp_frame_var *) (tmp + FID_SIZE);
+ vr->num = GTP_VAR_CPU_ID;
+ vr->val = gtp_frame_current_rb->cpu;
+ if (gtp_frame2file_v(grs, &data_size, tmp))
+ return -1;
+ }
+#endif
+
+#ifdef GTP_FRAME_SIMPLE
+ for (next = *(char **)(frame + FID_SIZE); next;
+ next = *(char **)(next + FID_SIZE)) {
+#elif defined(GTP_FTRACE_RING_BUFFER)
+ while (1) {
+ rbe = ring_buffer_iter_peek(gtp_frame_iter[cpu], NULL);
+ if (rbe == NULL)
+ break;
+ next = ring_buffer_event_data(rbe);
+#endif
+#ifdef GTP_RB
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END
+ | GTP_RB_WALK_CHECK_ID | GTP_RB_WALK_STEP;
+ rbws.end = gtp_frame_current_rb->w;
+ rbws.id = gtp_frame_current_id;
+ rbws.step = 0;
+ next = gtp_rb_walk(&rbws, gtp_frame_current_rb->rp);
+ rbws.step = 1;
+ while (rbws.reason == gtp_rb_walk_step) {
+#endif
+ switch (FID(next)) {
+ case FID_REG:
+ if (gtp_frame2file_r(grs, &data_size, next))
+ return -1;
+ break;
+ case FID_MEM:
+ if (gtp_frame2file_m(grs, &data_size, next))
+ return -1;
+ break;
+ case FID_VAR:
+ if (gtp_frame2file_v(grs, &data_size, next))
+ return -1;
+ break;
+#ifdef GTP_FTRACE_RING_BUFFER
+ case FID_HEAD:
+ goto out;
+ break;
+#endif
+ }
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_read(gtp_frame_iter[cpu], NULL);
+#endif
+#ifdef GTP_RB
+ next = gtp_rb_walk(&rbws, next);
+#endif
+ }
+
+#ifdef GTP_FTRACE_RING_BUFFER
+out:
+#endif
+#ifdef GTP_RB
+ gtp_frame_current_rb->rp = next;
+#endif
+ /* Set the data_size. */
+ memcpy(grs->buf + grs->size - data_size - 4,
+ &data_size, 4);
+
+ return 0;
+}
+
+static int
+gtp_frame_file_header(struct gtp_realloc_s *grs, int is_end)
+{
+ char *wbuf;
+ struct gtp_entry *tpe;
+ struct gtp_var *tvar;
+ int tmpsize;
+ int ret = -1;
+
+ /* Head. */
+ wbuf = gtp_realloc(grs, 8, 0);
+ strcpy(wbuf, "\x7fTRACE0\n");
+
+ /* BUG: will be a new value. */
+ wbuf = gtp_realloc(grs, 100, 0);
+ if (!wbuf)
+ goto out;
+ snprintf(wbuf, 100, "R %x\n", GTP_REG_BIN_SIZE);
+ gtp_realloc_sub_size(grs, 100 - strlen(wbuf));
+
+ if (gtp_realloc_str(grs, "status 0;", 0))
+ goto out;
+
+ wbuf = gtp_realloc(grs, 300, 0);
+ if (!wbuf)
+ goto out;
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ if (tpe->reason != gtp_stop_normal)
+ break;
+ }
+ tmpsize = gtp_get_status(tpe, wbuf, 300);
+ gtp_realloc_sub_size(grs, 300 - tmpsize);
+
+ if (gtp_realloc_str(grs, "\n", 0))
+ goto out;
+
+ /* Tval. */
+ for (tvar = gtp_var_list; tvar; tvar = tvar->next) {
+ wbuf = gtp_realloc(grs, 200, 0);
+ if (!wbuf)
+ goto out;
+ snprintf(wbuf, 200, "tsv %x:%s\n", tvar->num, tvar->src);
+ gtp_realloc_sub_size(grs, 200 - strlen(wbuf));
+ }
+
+ /* Tracepoint. */
+ for (tpe = gtp_list; tpe; tpe = tpe->next) {
+ struct gtpsrc *src;
+
+ /* Tpe. */
+ if (gtp_realloc_str(grs, "tp ", 0))
+ goto out;
+ wbuf = gtp_realloc(grs, GTP_REPORT_TRACEPOINT_MAX, 0);
+ if (!wbuf)
+ goto out;
+ gtp_report_tracepoint(tpe, wbuf, GTP_REPORT_TRACEPOINT_MAX);
+ gtp_realloc_sub_size(grs,
+ GTP_REPORT_TRACEPOINT_MAX - strlen(wbuf));
+ if (gtp_realloc_str(grs, "\n", 0))
+ goto out;
+ /* Action. */
+ for (src = tpe->action_cmd; src; src = src->next) {
+ if (gtp_realloc_str(grs, "tp ", 0))
+ goto out;
+ tmpsize = gtp_report_action_max(tpe, src);
+ wbuf = gtp_realloc(grs, tmpsize, 0);
+ if (!wbuf)
+ goto out;
+ gtp_report_action(tpe, src, wbuf, tmpsize);
+ gtp_realloc_sub_size(grs, tmpsize - strlen(wbuf));
+ if (gtp_realloc_str(grs, "\n", 0))
+ goto out;
+ }
+ /* Src. */
+ for (src = tpe->src; src; src = src->next) {
+ if (gtp_realloc_str(grs, "tp ", 0))
+ goto out;
+ tmpsize = gtp_report_src_max(tpe, src);
+ wbuf = gtp_realloc(grs, tmpsize, 0);
+ if (!wbuf)
+ goto out;
+ gtp_report_src(tpe, src, wbuf, tmpsize);
+ gtp_realloc_sub_size(grs, tmpsize - strlen(wbuf));
+ if (gtp_realloc_str(grs, "\n", 0))
+ goto out;
+ }
+ }
+
+ if (gtp_realloc_str(grs, "\n", is_end))
+ goto out;
+
+ ret = 0;
+out:
+ return ret;
+}
+
+static ssize_t
+gtpframe_read(struct file *file, char __user *buf, size_t size,
+ loff_t *ppos)
+{
+ ssize_t ret = -ENOMEM;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ /* -2 means don't need set the frame back old number. */
+ int old_num = -2;
+#endif
+
+recheck:
+ down(>p_rw_lock);
+ if (gtp_start) {
+ up(>p_rw_lock);
+ if (wait_event_interruptible(gtpframe_wq,
+ !gtp_start) == -ERESTARTSYS)
+ return -EINTR;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_read: goto recheck\n");
+#endif
+ goto recheck;
+ }
+
+ /* Set gtp_frame_file if need. */
+ if (!gtp_frame_file) {
+ char *wbuf;
+#ifdef GTP_FRAME_SIMPLE
+ char *frame;
+#endif
+ struct gtp_realloc_s gr;
+
+#ifdef GTP_FRAME_SIMPLE
+ if (gtp_frame_is_circular)
+ gr.real_size = GTP_FRAME_SIZE;
+ else
+ gr.real_size = gtp_frame_w_start - gtp_frame;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ gr.real_size =
+ ring_buffer_entries(gtp_frame) * GTP_FRAME_HEAD_SIZE;
+#endif
+#ifdef GTP_RB
+ if (atomic_read(>p_frame_create) != 0) {
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ void *tmp;
+ unsigned long flags;
+
+ GTP_RB_LOCK_IRQ(rb, flags);
+ gr.real_size = GTP_RB_END(rb->r) - rb->r;
+ for (tmp = GTP_RB_NEXT(rb->r);
+ GTP_RB_HEAD(tmp) != GTP_RB_HEAD(rb->w);
+ tmp = GTP_RB_NEXT(tmp))
+ gr.real_size += GTP_RB_DATA_MAX;
+ gr.real_size += rb->w - GTP_RB_DATA(rb->w);
+ GTP_RB_UNLOCK_IRQ(rb, flags);
+ }
+ }
+#endif
+ gr.real_size += 200;
+ ret = gtp_realloc_alloc(&gr, gr.real_size);
+ if (ret != 0)
+ goto out;
+
+ if (gtp_frame_file_header(&gr, 0))
+ goto out;
+
+ /* Frame. */
+ if (atomic_read(>p_frame_create) == 0)
+ goto end;
+#ifdef GTP_FRAME_SIMPLE
+ frame = gtp_frame_r_start;
+ do {
+ if (frame == gtp_frame_end)
+ frame = gtp_frame;
+
+ if (FID(frame) == FID_HEAD) {
+ if (gtp_frame2file(&gr, frame))
+ goto out;
+ }
+
+ frame = gtp_frame_next(frame);
+ if (!frame)
+ break;
+ } while (frame != gtp_frame_w_start);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ old_num = gtp_frame_current_num;
+ gtp_frame_iter_reset();
+ while (1) {
+ int cpu;
+
+ cpu = gtp_frame_iter_peek_head();
+ if (cpu < 0)
+ break;
+
+ if (gtp_frame2file(&gr, cpu))
+ goto out;
+ }
+#endif
+#ifdef GTP_RB
+ old_num = gtp_frame_current_num;
+ gtp_rb_read_reset();
+ while (1) {
+ if (gtp_rb_read() != 0)
+ break;
+ gtp_frame2file(&gr);
+ }
+#endif
+
+end:
+ /* End. */
+ wbuf = gtp_realloc(&gr, 2, 1);
+ if (!wbuf)
+ goto out;
+ wbuf[0] = '\0';
+ wbuf[1] = '\0';
+
+ gtp_frame_file = gr.buf;
+ gtp_frame_file_size = gr.size;
+ }
+
+ /* Set buf. */
+ ret = size;
+ if (*ppos + ret > gtp_frame_file_size) {
+ ret = gtp_frame_file_size - *ppos;
+ if (ret <= 0) {
+ ret = 0;
+ goto out;
+ }
+ }
+ if (copy_to_user(buf, gtp_frame_file + *ppos, ret)) {
+ size = -EFAULT;
+ goto out;
+ }
+ *ppos += ret;
+
+out:
+#ifdef GTP_FTRACE_RING_BUFFER
+ if (old_num == -1)
+ gtp_frame_iter_reset();
+ else if (old_num >= 0) {
+ gtp_frame_head_find_num(old_num);
+ ring_buffer_read(gtp_frame_iter[gtp_frame_current_cpu], NULL);
+ }
+#endif
+#ifdef GTP_RB
+ if (old_num == -1)
+ gtp_rb_reset();
+ else if (old_num >= 0)
+ gtp_frame_head_find_num(old_num);
+#endif
+ up(>p_rw_lock);
+ return ret;
+}
+
+static int
+gtpframe_open(struct inode *inode, struct file *file)
+{
+recheck:
+ down(>p_rw_lock);
+#ifdef GTP_RB
+ if (GTP_RB_PAGE_IS_EMPTY) {
+#elif defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (!gtp_frame) {
+#endif
+ up(>p_rw_lock);
+#ifdef GTP_RB
+ if (wait_event_interruptible(gtpframe_wq,
+ !GTP_RB_PAGE_IS_EMPTY)
+ == -ERESTARTSYS)
+#elif defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (wait_event_interruptible(gtpframe_wq,
+ gtp_frame) == -ERESTARTSYS)
+#endif
+ return -EINTR;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_open: goto recheck\n");
+#endif
+ goto recheck;
+ }
+
+ if (gtp_gtpframe_pipe_pid >= 0) {
+ up(>p_rw_lock);
+ return -EBUSY;
+ }
+
+ if (gtp_gtpframe_pid >= 0) {
+ if (get_current()->pid != gtp_gtpframe_pid) {
+ up(>p_rw_lock);
+ return -EBUSY;
+ }
+ }
+
+ gtp_frame_count++;
+
+ gtp_gtpframe_pid_count++;
+ if (gtp_gtpframe_pid < 0)
+ gtp_gtpframe_pid = get_current()->pid;
+
+ up(>p_rw_lock);
+ return 0;
+}
+
+static int
+gtpframe_release(struct inode *inode, struct file *file)
+{
+ down(>p_rw_lock);
+ gtp_frame_count_release();
+
+ gtp_gtpframe_pid_count--;
+ if (gtp_gtpframe_pid_count == 0)
+ gtp_gtpframe_pid = -1;
+ up(>p_rw_lock);
+
+ return 0;
+}
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+struct gtpframe_pipe_s {
+ loff_t begin;
+ struct gtp_realloc_s *grs;
+ int llseek_move;
+#ifdef GTP_RB
+ void **page;
+ u64 *page_id;
+#endif
+};
+
+static int
+gtpframe_pipe_open(struct inode *inode, struct file *file)
+{
+ int ret = -ENOMEM;
+ struct gtpframe_pipe_s *gps = NULL;
+
+ down(>p_rw_lock);
+
+ if (gtp_frame_current_num >= 0 || gtp_gtpframe_pipe_pid >= 0) {
+ ret = -EBUSY;
+ goto out;
+ }
+ gtp_gtpframe_pipe_pid = get_current()->pid;
+
+recheck:
+#ifdef GTP_RB
+ if (GTP_RB_PAGE_IS_EMPTY) {
+#elif defined(GTP_FTRACE_RING_BUFFER)
+ if (!gtp_frame) {
+#endif
+ up(>p_rw_lock);
+ atomic_inc(>pframe_pipe_wq_v);
+#ifdef GTP_RB
+ if (wait_event_interruptible(gtpframe_pipe_wq,
+ !GTP_RB_PAGE_IS_EMPTY) == -ERESTARTSYS) {
+#elif defined(GTP_FTRACE_RING_BUFFER)
+ if (wait_event_interruptible(gtpframe_pipe_wq,
+ gtp_frame) == -ERESTARTSYS) {
+#endif
+ ret = -EINTR;
+ goto out;
+ }
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_pipe_open: goto recheck\n");
+#endif
+ down(>p_rw_lock);
+ goto recheck;
+ }
+
+ gps = kcalloc(1, sizeof(struct gtpframe_pipe_s), GFP_KERNEL);
+ if (gps == NULL)
+ goto out;
+ gps->grs = kcalloc(1, sizeof(struct gtp_realloc_s), GFP_KERNEL);
+ if (gps->grs == NULL)
+ goto out;
+#ifdef GTP_RB
+ gps->page = kcalloc(gtp_cpu_number, sizeof(void *), GFP_KERNEL);
+ if (gps->page == NULL)
+ goto out;
+ gps->page_id = kcalloc(gtp_cpu_number, sizeof(u64), GFP_KERNEL);
+ if (gps->page_id == NULL)
+ goto out;
+#endif
+
+ file->private_data = gps;
+
+ gtp_frame_count++;
+
+ ret = 0;
+out:
+ if (ret) {
+ gtp_gtpframe_pipe_pid = -1;
+ if (gps) {
+ kfree(gps->grs);
+#ifdef GTP_RB
+ kfree(gps->page);
+ kfree(gps->page_id);
+#endif
+ kfree(gps);
+ }
+ }
+ up(>p_rw_lock);
+ return ret;
+}
+
+static int
+gtpframe_pipe_release(struct inode *inode, struct file *file)
+{
+ struct gtpframe_pipe_s *gps = file->private_data;
+
+ down(>p_rw_lock);
+ gtp_frame_count_release();
+
+ gtp_gtpframe_pipe_pid = -1;
+
+ up(>p_rw_lock);
+
+ if (gps) {
+#ifdef GTP_RB
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ if (gps->page[cpu])
+ gtp_rb_put_page(rb, gps->page[cpu], 0);
+ }
+
+ kfree(gps->page);
+ kfree(gps->page_id);
+#endif
+ if (gps->grs) {
+ if (gps->grs->buf)
+ vfree(gps->grs->buf);
+ kfree(gps->grs);
+ }
+ kfree(gps);
+ }
+
+ return 0;
+}
+
+#ifdef GTP_RB
+static int
+gtpframe_pipe_peek(struct gtpframe_pipe_s *gps)
+{
+ int cpu;
+ u64 min_id = ULLONG_MAX;
+ int ret = -1;
+ struct gtp_rb_walk_s rbws;
+
+ rbws.flags = 0;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+
+ if (gps->page_id[cpu] == 0) {
+ /* Get new page. */
+ if (gps->page[cpu] == NULL) {
+get_new_page:
+ gps->page[cpu] = gtp_rb_get_page(rb);
+ if (gps->page[cpu] == NULL)
+ continue;
+ }
+ /* Get new entry. */
+ gps->page[cpu] = gtp_rb_walk(&rbws, gps->page[cpu]);
+ if (rbws.reason != gtp_rb_walk_new_entry) {
+ /* Put the page back and get a new page. */
+ gtp_rb_put_page(rb, gps->page[cpu], 1);
+ goto get_new_page;
+ }
+ /* Get id. */
+ gps->page_id[cpu] = *(u64 *)(gps->page[cpu] + FID_SIZE);
+ }
+
+ if (gps->page_id[cpu] < min_id) {
+ min_id = gps->page_id[cpu];
+ ret = cpu;
+ }
+ }
+
+ return ret;
+}
+#else
+static int
+gtpframe_pipe_peek(void)
+{
+ u64 min = 0;
+ u64 ts;
+ int cpu;
+ struct ring_buffer_event *rbe;
+ char *next;
+ int ret = -1;
+
+ for_each_online_cpu(cpu) {
+ while (1) {
+ rbe = ring_buffer_peek(gtp_frame, cpu, &ts, NULL);
+ if (rbe == NULL)
+ break;
+ next = ring_buffer_event_data(rbe);
+ if (FID(next) == FID_HEAD)
+ break;
+ ring_buffer_consume(gtp_frame, cpu, &ts, NULL);
+ }
+
+ if (rbe) {
+ if ((min && ts < min) || !min) {
+ min = ts;
+ ret = cpu;
+ }
+ }
+ }
+
+ return ret;
+}
+#endif
+
+static int
+#ifdef GTP_RB
+gtpframe_pipe_get_entry(struct gtpframe_pipe_s *gps)
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+gtpframe_pipe_get_entry(struct gtp_realloc_s *grs)
+#endif
+{
+ int cpu;
+ int16_t *tmp16p;
+ uint32_t data_size;
+#ifdef GTP_FTRACE_RING_BUFFER
+ char *next;
+ struct ring_buffer_event *rbe;
+ u64 ts;
+#endif
+
+#ifdef GTP_RB
+ struct gtp_rb_walk_s rbws;
+ struct gtp_realloc_s *grs = gps->grs;
+#endif
+ /* Because this function only be called when gtp_realloc_is_empty,
+ so grs don't need reset. */
+
+#ifdef GTP_RB
+#define GTP_PIPE_PEEK (cpu = gtpframe_pipe_peek(gps))
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+recheck:
+#define GTP_PIPE_PEEK (cpu = gtpframe_pipe_peek())
+#endif
+ GTP_PIPE_PEEK;
+ if (cpu < 0) {
+ /* Didn't get the buffer that have event.
+ Wait and recheck.*/
+ atomic_inc(>pframe_pipe_wq_v);
+ if (wait_event_interruptible(gtpframe_pipe_wq,
+ GTP_PIPE_PEEK >= 0)
+ == -ERESTARTSYS)
+ return -EINTR;
+ }
+#undef GTP_PIPE_PEEK
+
+ /* Head. */
+#ifdef GTP_FTRACE_RING_BUFFER
+ rbe = ring_buffer_consume(gtp_frame, cpu, &ts, NULL);
+ if (rbe == NULL)
+ goto recheck;
+ next = ring_buffer_event_data(rbe);
+ if (FID(next) != FID_HEAD)
+ goto recheck;
+#endif
+ tmp16p = (int16_t *)gtp_realloc(grs, 2, 0);
+ if (!tmp16p)
+ return -ENOMEM;
+#ifdef GTP_RB
+ *tmp16p = (int16_t)*(ULONGEST *)(gps->page[cpu] + FID_SIZE
+ + sizeof(u64));
+ gps->page[cpu] += FRAME_ALIGN(GTP_FRAME_HEAD_SIZE);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ *tmp16p = (int16_t)*(ULONGEST *)(next + FID_SIZE);
+#endif
+ /* This part is for the data_size. */
+ if (gtp_realloc(grs, 4, 0) == NULL)
+ return -ENOMEM;
+ data_size = 0;
+
+#ifdef GTP_RB
+ {
+ /* Handle $cpu_id. */
+ struct gtp_frame_var *vr;
+ char frame[GTP_FRAME_VAR_SIZE];
+
+ vr = (struct gtp_frame_var *) (frame + FID_SIZE);
+ vr->num = GTP_VAR_CPU_ID;
+ vr->val = cpu;
+ if (gtp_frame2file_v(grs, &data_size, frame))
+ return -ENOMEM;
+ }
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ {
+ /* Handle $cpu_id and $clock. */
+ struct gtp_frame_var *vr;
+ char frame[GTP_FRAME_VAR_SIZE];
+
+
+ vr = (struct gtp_frame_var *) (frame + FID_SIZE);
+ vr->num = GTP_VAR_CLOCK_ID;
+ vr->val = ts;
+ if (gtp_frame2file_v(grs, &data_size, frame))
+ return -ENOMEM;
+ vr->num = GTP_VAR_CPU_ID;
+ vr->val = cpu;
+ if (gtp_frame2file_v(grs, &data_size, frame))
+ return -ENOMEM;
+ }
+#endif
+
+#ifdef GTP_RB
+ rbws.flags = GTP_RB_WALK_CHECK_ID | GTP_RB_WALK_STEP;
+ rbws.id = gps->page_id[cpu];
+re_walk:
+ rbws.step = 0;
+ gps->page[cpu] = gtp_rb_walk(&rbws, gps->page[cpu]);
+ rbws.step = 1;
+ while (rbws.reason == gtp_rb_walk_step) {
+ switch (FID(gps->page[cpu])) {
+ case FID_REG:
+ if (gtp_frame2file_r(grs, &data_size, gps->page[cpu]))
+ return -ENOMEM;
+ break;
+
+ case FID_MEM:
+ if (gtp_frame2file_m(grs, &data_size, gps->page[cpu]))
+ return -ENOMEM;
+ break;
+
+ case FID_VAR:
+ if (gtp_frame2file_v(grs, &data_size, gps->page[cpu]))
+ return -ENOMEM;
+ break;
+ }
+ gps->page[cpu] = gtp_rb_walk(&rbws, gps->page[cpu]);
+ }
+ if (rbws.reason == gtp_rb_walk_end_page
+ || rbws.reason == gtp_rb_walk_error) {
+ /* Put this page back. */
+ gtp_rb_put_page((struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu),
+ gps->page[cpu], 1);
+ gps->page[cpu] = gtp_rb_get_page((struct gtp_rb_s *)per_cpu_ptr
+ (gtp_rb, cpu));
+ if (gps->page[cpu])
+ goto re_walk;
+ }
+ gps->page_id[cpu] = 0;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ while (1) {
+#define GTP_PIPE_CONSUME (rbe = ring_buffer_consume(gtp_frame, cpu, NULL, NULL))
+ GTP_PIPE_CONSUME;
+ if (rbe == NULL) {
+ if (!gtp_start)
+ break;
+
+ atomic_inc(>pframe_pipe_wq_v);
+ if (wait_event_interruptible(gtpframe_pipe_wq,
+ GTP_PIPE_CONSUME
+ != NULL)
+ == -ERESTARTSYS)
+ return -EINTR;
+ continue;
+ }
+#undef GTP_PIPE_CONSUME
+ next = ring_buffer_event_data(rbe);
+ switch (FID(next)) {
+ case FID_REG:
+ if (gtp_frame2file_r(grs, &data_size, next))
+ return -ENOMEM;
+ break;
+
+ case FID_MEM:
+ if (gtp_frame2file_m(grs, &data_size, next))
+ return -ENOMEM;
+ break;
+
+ case FID_VAR:
+ if (gtp_frame2file_v(grs, &data_size, next))
+ return -ENOMEM;
+ break;
+
+ case FID_HEAD:
+ case FID_END:
+ goto while_out;
+ break;
+ }
+ }
+while_out:
+#endif
+ /* Set the data_size. */
+ memcpy(grs->buf + grs->size - data_size - 4, &data_size, 4);
+
+ return 0;
+}
+
+static ssize_t
+gtpframe_pipe_read(struct file *file, char __user *buf, size_t size,
+ loff_t *ppos)
+{
+ ssize_t ret = -ENOMEM;
+ struct gtpframe_pipe_s *gps = file->private_data;
+ loff_t entry_offset;
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_pipe_read: size=%u *ppos=%lld\n",
+ size, *ppos);
+#endif
+
+ if (!gtp_realloc_is_alloced(gps->grs)) {
+ ret = gtp_realloc_alloc(gps->grs, 200);
+ if (ret != 0)
+ goto out;
+ } else if (*ppos < gps->begin
+ || *ppos >= (gps->begin + gps->grs->size)) {
+ gtp_realloc_reset(gps->grs);
+
+ if (gps->llseek_move) {
+ /* clear user will return NULL.
+ Then GDB tfind got a fail. */
+ if (size > 2)
+ size = 2;
+ if (clear_user(buf, size)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ gps->begin = 0;
+ gps->llseek_move = 0;
+ ret = size;
+ goto out;
+ }
+ }
+
+ if (gtp_realloc_is_empty(gps->grs)) {
+ if (*ppos == 0) {
+
+ if (gtp_frame_file_header(gps->grs, 1))
+ goto out;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_pipe_read: Get header.\n");
+#endif
+ } else {
+#ifdef GTP_RB
+ ret = gtpframe_pipe_get_entry(gps);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ ret = gtpframe_pipe_get_entry(gps->grs);
+#endif
+ if (ret < 0)
+ goto out;
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_pipe_read: Get entry.\n");
+#endif
+ }
+ gps->begin = *ppos;
+ }
+
+#ifdef GTP_DEBUG
+ printk(GTP_DEBUG "gtpframe_pipe_read: gps->begin=%lld "
+ "gps->grs->size=%u\n",
+ gps->begin, gps->grs->size);
+#endif
+
+ entry_offset = *ppos - gps->begin;
+ ret = size;
+ if (entry_offset + size > gps->grs->size)
+ ret = gps->grs->size - entry_offset;
+ if (copy_to_user(buf, gps->grs->buf + entry_offset, ret)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ *ppos += ret;
+
+out:
+ return ret;
+}
+
+static loff_t
+gtpframe_pipe_llseek(struct file *file, loff_t offset, int origin)
+{
+ struct gtpframe_pipe_s *gps = file->private_data;
+ loff_t ret = default_llseek(file, offset, origin);
+
+ if (ret < 0)
+ return ret;
+
+ /* True means that GDB tfind to next frame entry. */
+ if (ret >= gps->begin + gps->grs->size && gps->begin)
+ gps->llseek_move = 1;
+
+ return ret;
+}
+#endif
+
+static const struct file_operations gtp_operations = {
+ .owner = THIS_MODULE,
+ .open = gtp_open,
+ .release = gtp_release,
+ .unlocked_ioctl = gtp_ioctl,
+ .compat_ioctl = gtp_ioctl,
+ .read = gtp_read,
+ .write = gtp_write,
+ .poll = gtp_poll,
+};
+
+static const struct file_operations gtpframe_operations = {
+ .owner = THIS_MODULE,
+ .open = gtpframe_open,
+ .release = gtpframe_release,
+ .read = gtpframe_read,
+ .llseek = default_llseek,
+};
+
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+static const struct file_operations gtpframe_pipe_operations = {
+ .owner = THIS_MODULE,
+ .open = gtpframe_pipe_open,
+ .release = gtpframe_pipe_release,
+ .read = gtpframe_pipe_read,
+ .llseek = gtpframe_pipe_llseek,
+};
+#endif
+
+struct dentry *gtp_dir;
+struct dentry *gtpframe_dir;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+struct dentry *gtpframe_pipe_dir;
+#endif
+
+static int
+gtp_modules_load_del_notify(struct notifier_block *self, unsigned long val,
+ void *data)
+{
+ if (val == MODULE_STATE_COMING)
+ return 0;
+
+ down(>p_rw_lock);
+ gtp_modules_traceframe_info_need_get = 1;
+ up(>p_rw_lock);
+
+ return 0;
+}
+
+static struct notifier_block gtp_modules_load_del_nb = {
+ .notifier_call = gtp_modules_load_del_notify,
+};
+
+static int __init gtp_init(void)
+{
+ int ret = -ENOMEM;
+
+ gtp_gtp_pid = -1;
+ gtp_gtp_pid_count = 0;
+ gtp_gtpframe_pid = -1;
+ gtp_gtpframe_pid_count = 0;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ gtp_gtpframe_pipe_pid = -1;
+#endif
+ gtp_list = NULL;
+ gtp_read_ack = 0;
+ gtp_rw_bufp = NULL;
+ gtp_rw_size = 0;
+ gtp_start = 0;
+ gtp_disconnected_tracing = 0;
+ gtp_circular = 0;
+ gtp_var_list = GTP_VAR_LIST_FIRST;
+ gtp_var_head = GTP_VAR_SPECIAL_MIN;
+ gtp_var_tail = GTP_VAR_SPECIAL_MAX;
+ gtp_var_array = NULL;
+ current_gtp_var = NULL;
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ gtp_frame = NULL;
+#endif
+ gtp_frame_current_num = -1;
+ gtp_frame_current_tpe = 0;
+#ifdef GTP_FRAME_SIMPLE
+ gtp_frame_r_start = NULL;
+ gtp_frame_w_start = NULL;
+ gtp_frame_end = NULL;
+ gtp_frame_current = NULL;
+ gtp_frame_is_circular = 0;
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ {
+ int cpu;
+
+ for_each_online_cpu(cpu)
+ gtp_frame_iter[cpu] = NULL;
+ }
+ gtp_frame_current_cpu = 0;
+#endif
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ atomic_set(>pframe_pipe_wq_v, 0);
+#endif
+ atomic_set(>p_frame_create, 0);
+ gtp_rw_count = 0;
+ gtp_frame_count = 0;
+ current_gtp = NULL;
+ current_gtp_action_cmd = NULL;
+ current_gtp_src = NULL;
+ gtpro_list = NULL;
+ gtp_frame_file = NULL;
+ gtp_frame_file_size = 0;
+ gtp_dir = NULL;
+ gtpframe_dir = NULL;
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ gtpframe_pipe_dir = NULL;
+#endif
+ {
+ int cpu;
+
+ gtp_cpu_number = 0;
+ for_each_online_cpu(cpu) {
+ if (cpu > gtp_cpu_number)
+ gtp_cpu_number = cpu;
+ }
+ gtp_cpu_number++;
+ }
+ gtp_start_last_errno = 0;
+ gtp_start_ignore_error = 0;
+ gtp_pipe_trace = 0;
+ gtp_bt_size = 512;
+ gtp_noack_mode = 0;
+#ifdef GTP_RB
+ gtp_traceframe_info = NULL;
+ gtp_traceframe_info_len = 0;
+#endif
+
+#ifdef GTP_RB
+ ret = gtp_rb_init();
+ if (ret != 0)
+ goto out;
+#endif
+
+ gtp_wq = create_singlethread_workqueue("gtpd");
+ if (gtp_wq == NULL)
+ goto out;
+
+ gtp_dir = debugfs_create_file("gtp", S_IFIFO | S_IRUSR | S_IWUSR, NULL,
+ NULL, >p_operations);
+ if (gtp_dir == NULL || gtp_dir == ERR_PTR(-ENODEV)) {
+ gtp_dir = NULL;
+ goto out;
+ }
+ gtpframe_dir = debugfs_create_file("gtpframe", S_IFIFO | S_IRUSR, NULL,
+ NULL, >pframe_operations);
+ if (gtpframe_dir == NULL || gtpframe_dir == ERR_PTR(-ENODEV)) {
+ gtpframe_dir = NULL;
+ goto out;
+ }
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ gtpframe_pipe_dir = debugfs_create_file("gtpframe_pipe",
+ S_IFIFO | S_IRUSR, NULL, NULL,
+ >pframe_pipe_operations);
+ if (gtpframe_pipe_dir == NULL
+ || gtpframe_pipe_dir == ERR_PTR(-ENODEV)) {
+ gtpframe_pipe_dir = NULL;
+ goto out;
+ }
+#endif
+
+ gtp_modules_traceframe_info_need_get = 1;
+ gtp_modules_traceframe_info = NULL;
+ gtp_modules_traceframe_info_len = 0;
+ if (register_module_notifier(>p_modules_load_del_nb))
+ goto out;
+
+ ret = 0;
+out:
+ if (ret < 0) {
+ if (gtp_wq)
+ destroy_workqueue(gtp_wq);
+
+ if (gtp_dir)
+ debugfs_remove_recursive(gtp_dir);
+ if (gtpframe_dir)
+ debugfs_remove_recursive(gtpframe_dir);
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gtpframe_pipe_dir)
+ debugfs_remove_recursive(gtpframe_pipe_dir);
+#endif
+
+#ifdef GTP_RB
+ gtp_rb_release();
+#endif
+ }
+
+ return ret;
+}
+
+static void __exit gtp_exit(void)
+{
+ unregister_module_notifier(>p_modules_load_del_nb);
+
+ if (gtp_dir)
+ debugfs_remove_recursive(gtp_dir);
+ if (gtpframe_dir)
+ debugfs_remove_recursive(gtpframe_dir);
+#if defined(GTP_FTRACE_RING_BUFFER) || defined(GTP_RB)
+ if (gtpframe_pipe_dir)
+ debugfs_remove_recursive(gtpframe_pipe_dir);
+#endif
+
+ gtp_gdbrsp_qtstop();
+ gtp_gdbrsp_qtinit();
+#ifdef GTP_RB
+ if (!GTP_RB_PAGE_IS_EMPTY)
+ gtp_rb_page_free();
+#endif
+#if defined(GTP_FRAME_SIMPLE) || defined(GTP_FTRACE_RING_BUFFER)
+ if (gtp_frame) {
+#ifdef GTP_FRAME_SIMPLE
+ vfree(gtp_frame);
+#endif
+#ifdef GTP_FTRACE_RING_BUFFER
+ ring_buffer_free(gtp_frame);
+#endif
+ gtp_frame = NULL;
+ }
+#endif
+
+ destroy_workqueue(gtp_wq);
+
+#ifdef GTP_RB
+ gtp_rb_release();
+#endif
+}
+
+module_init(gtp_init)
+module_exit(gtp_exit)
+
+MODULE_AUTHOR("Hui Zhu <teawater@xxxxxxxxx>");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/lib/gtp_rb.c
@@ -0,0 +1,498 @@
+/*
+ * Ring buffer of kernel GDB tracepoint module.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright(C) KGTP team (https://code.google.com/p/kgtp/), 2011, 2012
+ *
+ */
+
+#define ADDR_SIZE sizeof(size_t)
+#define GTP_RB_HEAD(addr) ((void *)((size_t)(addr) & PAGE_MASK))
+#define GTP_RB_DATA(addr) (GTP_RB_HEAD(addr) + ADDR_SIZE)
+#define GTP_RB_END(addr) (GTP_RB_HEAD(addr) + PAGE_SIZE - ADDR_SIZE)
+#define GTP_RB_PREV(addr) (*(void **)GTP_RB_HEAD(addr))
+#define GTP_RB_NEXT(addr) (*(void **)GTP_RB_END(addr))
+#define GTP_RB_DATA_MAX (PAGE_SIZE - ADDR_SIZE - ADDR_SIZE - FID_SIZE \
+ - sizeof(u64))
+
+struct gtp_rb_s {
+ spinlock_t lock;
+ void *w;
+ void *prev_w;
+ void *r;
+ void *rp;
+ u64 rp_id;
+ int cpu;
+};
+
+static struct gtp_rb_s __percpu *gtp_rb;
+static atomic64_t gtp_rb_count;
+static unsigned int gtp_rb_page_count;
+static atomic_t gtp_rb_discard_page_number;
+
+static int
+gtp_rb_init(void)
+{
+ int cpu;
+
+ gtp_rb = alloc_percpu(struct gtp_rb_s);
+ if (!gtp_rb)
+ return -ENOMEM;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ memset(rb, 0, sizeof(struct gtp_rb_s));
+ rb->lock = __SPIN_LOCK_UNLOCKED(rb->lock);
+ rb->cpu = cpu;
+ }
+ gtp_rb_page_count = 0;
+ atomic_set(>p_rb_discard_page_number, 0);
+
+ return 0;
+}
+
+static void
+gtp_rb_release(void)
+{
+ if (gtp_rb) {
+ free_percpu(gtp_rb);
+ gtp_rb = NULL;
+ }
+}
+
+static void
+gtp_rb_reset(void)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ rb->w = GTP_RB_DATA(rb->w);
+ rb->r = rb->w;
+ rb->rp = NULL;
+ rb->rp_id = 0;
+ }
+
+ atomic64_set(>p_rb_count, 0);
+ atomic_set(>p_rb_discard_page_number, 0);
+}
+
+static inline u64
+gtp_rb_clock(void)
+{
+ return atomic64_inc_return(>p_rb_count);
+}
+
+#define GTP_RB_PAGE_IS_EMPTY (gtp_rb_page_count == 0)
+
+static int
+gtp_rb_page_alloc(int size)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ void *last = NULL, *next = NULL;
+ struct page *page;
+ int current_size;
+
+ gtp_rb_page_count = 0;
+ current_size = size;
+
+ while (1) {
+ if (current_size > 0)
+ current_size -= PAGE_SIZE;
+ else
+ break;
+
+ page = alloc_pages_node(cpu_to_node(cpu),
+ GFP_KERNEL, 0);
+ if (!page)
+ return -1;
+ gtp_rb_page_count++;
+ rb->w = GTP_RB_DATA(page_address(page));
+ GTP_RB_NEXT(rb->w) = next;
+ if (next)
+ GTP_RB_PREV(next) = rb->w;
+ next = rb->w;
+ if (!last)
+ last = rb->w;
+ }
+
+ GTP_RB_NEXT(last) = next;
+ GTP_RB_PREV(next) = last;
+ rb->r = rb->w;
+
+ if (gtp_rb_page_count < 3)
+ return -1;
+ }
+
+ return 0;
+}
+
+static void
+gtp_rb_page_free(void)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+ void *need_free = NULL;
+ int is_first = 1;
+
+ for (rb->r = rb->w = GTP_RB_DATA(rb->w);
+ is_first || rb->w != rb->r;
+ rb->w = GTP_RB_NEXT(rb->w)) {
+ if (need_free)
+ free_page((unsigned long)need_free);
+ need_free = GTP_RB_HEAD(rb->w);
+ is_first = 0;
+ }
+ if (need_free)
+ free_page((unsigned long)need_free);
+ }
+
+ gtp_rb_page_count = 0;
+}
+
+#define GTP_RB_LOCK(r) spin_lock(&r->lock);
+#define GTP_RB_UNLOCK(r) spin_unlock(&r->lock);
+#define GTP_RB_LOCK_IRQ(r, flags) spin_lock_irqsave(&r->lock, flags);
+#define GTP_RB_UNLOCK_IRQ(r, flags) spin_unlock_irqrestore(&r->lock, flags);
+#define GTP_RB_RELEASE(r) (r->prev_w = r->w)
+
+static void *
+gtp_rb_alloc(struct gtp_rb_s *rb, size_t size, u64 id)
+{
+ void *ret;
+
+ size = FRAME_ALIGN(size);
+
+ if (size > GTP_RB_DATA_MAX) {
+ printk(KERN_WARNING "gtp_rb_alloc: The size %zu is too big"
+ "for the KGTP ring buffer. "
+ "The max size that KGTP ring buffer "
+ "support is %lu (Need sub some size for "
+ "inside structure).\n", size, GTP_RB_DATA_MAX);
+ return NULL;
+ }
+
+ rb->prev_w = rb->w;
+
+ if (rb->w + size > GTP_RB_END(rb->w)) {
+ /* Don't have enough size in current page, insert a
+ FID_PAGE_END and try to get next page. */
+ if (GTP_RB_END(rb->w) - rb->w >= FID_SIZE)
+ FID(rb->w) = FID_PAGE_END;
+
+ if (GTP_RB_HEAD(GTP_RB_NEXT(rb->w)) == GTP_RB_HEAD(rb->r)) {
+ if (gtp_circular) {
+ rb->r = GTP_RB_NEXT(rb->r);
+ atomic_inc(>p_rb_discard_page_number);
+ } else
+ return NULL;
+ }
+ rb->w = GTP_RB_NEXT(rb->w);
+
+ if (id) {
+ /* Need insert a FID_PAGE_BEGIN. */
+ FID(rb->w) = FID_PAGE_BEGIN;
+ *((u64 *)(rb->w + FID_SIZE)) = id;
+ rb->w += FRAME_ALIGN(GTP_FRAME_PAGE_BEGIN_SIZE);
+ }
+ }
+
+ ret = rb->w;
+ rb->w += size;
+
+ return ret;
+}
+
+enum gtp_rb_walk_reason {
+ gtp_rb_walk_end = 0,
+ gtp_rb_walk_end_page,
+ gtp_rb_walk_end_entry,
+ gtp_rb_walk_new_entry,
+ gtp_rb_walk_type,
+ gtp_rb_walk_step,
+ gtp_rb_walk_error,
+};
+
+/* Check *end. */
+#define GTP_RB_WALK_CHECK_END 0x1
+/* When to the end of a page, goto next one. */
+#define GTP_RB_WALK_PASS_PAGE 0x2
+/* When to the end of a entry, goto next one. */
+#define GTP_RB_WALK_PASS_ENTRY 0x4
+/* Check with id and FID_PAGE_BEGIN to make sure this is the current frame. */
+#define GTP_RB_WALK_CHECK_ID 0x8
+/* Return ff type is same in buffer. */
+#define GTP_RB_WALK_CHECK_TYPE 0x10
+/* Return ff type is same in buffer. */
+#define GTP_RB_WALK_STEP 0x20
+
+struct gtp_rb_walk_s {
+ unsigned int flags;
+ /* Reason for return. */
+ enum gtp_rb_walk_reason reason;
+ /* GTP_RB_WALK_CHECK_END */
+ void *end;
+ /* GTP_RB_WALK_CHECK_ID */
+ u64 id;
+ /* GTP_RB_WALK_CHECK_TYPE */
+ FID_TYPE type;
+ /* GTP_RB_WALK_STEP */
+ int step;
+};
+
+static void *
+gtp_rb_walk(struct gtp_rb_walk_s *s, void *ret)
+{
+ int step;
+ void *page_end = GTP_RB_END(ret);
+
+ if (s->flags & GTP_RB_WALK_STEP)
+ step = 0;
+
+ while (1) {
+ FID_TYPE fid;
+
+ if ((s->flags & GTP_RB_WALK_CHECK_END) && ret == s->end) {
+ s->reason = gtp_rb_walk_end;
+ break;
+ }
+
+ if (ret == page_end || page_end - ret < FID_SIZE
+ || FID(ret) == FID_PAGE_END) {
+ if (!(s->flags & GTP_RB_WALK_PASS_PAGE)) {
+ s->reason = gtp_rb_walk_end_page;
+ break;
+ }
+ ret = GTP_RB_NEXT(ret);
+ page_end = GTP_RB_END(ret);
+ continue;
+ }
+
+ fid = FID(ret);
+
+ if ((s->flags & GTP_RB_WALK_CHECK_TYPE) && s->type == fid) {
+ s->reason = gtp_rb_walk_type;
+ break;
+ }
+
+ if ((s->flags & GTP_RB_WALK_STEP)
+ && (fid == FID_REG || fid == FID_MEM || fid == FID_VAR)) {
+ if (step >= s->step) {
+ s->reason = gtp_rb_walk_step;
+ break;
+ }
+ step++;
+ }
+
+ switch (fid) {
+ case FID_HEAD:
+ if (!(s->flags & GTP_RB_WALK_PASS_ENTRY)) {
+ s->reason = gtp_rb_walk_new_entry;
+ goto out;
+ }
+ ret += FRAME_ALIGN(GTP_FRAME_HEAD_SIZE);
+ break;
+ case FID_REG:
+ ret += FRAME_ALIGN(GTP_FRAME_REG_SIZE);
+ break;
+ case FID_MEM: {
+ struct gtp_frame_mem *gfm;
+
+ gfm = (struct gtp_frame_mem *) (ret + FID_SIZE);
+ ret += FRAME_ALIGN(GTP_FRAME_MEM_SIZE
+ + gfm->size);
+ }
+ break;
+ case FID_VAR:
+ ret += FRAME_ALIGN(GTP_FRAME_VAR_SIZE);
+ break;
+ case FID_PAGE_BEGIN:
+ if ((s->flags & GTP_RB_WALK_CHECK_ID)
+ && s->id != *(u64 *)(ret + FID_SIZE)) {
+ s->reason = gtp_rb_walk_end_entry;
+ goto out;
+ }
+ ret += FRAME_ALIGN(GTP_FRAME_PAGE_BEGIN_SIZE);
+ break;
+ default:
+ printk(KERN_WARNING
+ "Walk in gtp ring buffer got error id 0x%x "
+ "in 0x%p.\n",
+ fid, ret);
+ s->reason = gtp_rb_walk_error;
+ goto out;
+ break;
+ }
+ }
+
+out:
+ return ret;
+}
+
+static struct gtp_rb_s *gtp_frame_current_rb;
+static u64 gtp_frame_current_id;
+
+static void
+gtp_rb_read_reset(void)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+
+ rb->rp = rb->r;
+ rb->rp_id = 0;
+ }
+ gtp_frame_current_num = -1;
+ gtp_frame_current_rb = NULL;
+}
+
+static int
+gtp_rb_read(void)
+{
+ int cpu;
+ u64 min_id = ULLONG_MAX;
+ struct gtp_rb_walk_s rbws;
+
+ gtp_frame_current_rb = NULL;
+
+ rbws.flags = GTP_RB_WALK_PASS_PAGE | GTP_RB_WALK_CHECK_END;
+
+ for_each_online_cpu(cpu) {
+ struct gtp_rb_s *rb
+ = (struct gtp_rb_s *)per_cpu_ptr(gtp_rb, cpu);
+
+ if (rb->rp == NULL)
+ rb->rp = rb->r;
+
+ if (rb->rp_id == 0) {
+ rbws.end = rb->w;
+ rb->rp = gtp_rb_walk(&rbws, rb->rp);
+ if (rbws.reason != gtp_rb_walk_new_entry)
+ continue;
+ rb->rp_id = *(u64 *)(rb->rp + FID_SIZE);
+ }
+ if (rb->rp_id < min_id) {
+ min_id = rb->rp_id;
+ gtp_frame_current_rb = rb;
+ }
+ }
+
+ if (gtp_frame_current_rb == NULL) {
+ gtp_rb_read_reset();
+ return -1;
+ }
+
+ gtp_frame_current_rb->rp_id = 0;
+ gtp_frame_current_id = *(u64 *)(gtp_frame_current_rb->rp + FID_SIZE);
+ gtp_frame_current_tpe = *(ULONGEST *)(gtp_frame_current_rb->rp
+ + FID_SIZE + sizeof(u64));
+ gtp_frame_current_rb->rp += FRAME_ALIGN(GTP_FRAME_HEAD_SIZE);
+
+ gtp_frame_current_num += 1;
+
+ return 0;
+}
+
+static void *
+gtp_rb_get_page(struct gtp_rb_s *rb)
+{
+ void *ret = NULL;
+ unsigned long flags;
+
+ GTP_RB_LOCK_IRQ(rb, flags);
+
+ if (GTP_RB_HEAD(rb->r) == GTP_RB_HEAD(rb->w)) {
+ if (rb->r == rb->w)
+ goto out;
+ /* Move rb->w to next page. */
+ if (GTP_RB_END(rb->w) - rb->w >= FID_SIZE)
+ FID(rb->w) = FID_PAGE_END;
+ rb->w = GTP_RB_NEXT(rb->w);
+ }
+
+ ret = rb->r;
+ {
+ /* Move this page out of ring. */
+ void *prev = GTP_RB_PREV(rb->r);
+ void *next = GTP_RB_NEXT(rb->r);
+
+ GTP_RB_NEXT(prev) = next;
+ GTP_RB_PREV(next) = prev;
+ rb->r = next;
+ }
+
+out:
+ GTP_RB_UNLOCK_IRQ(rb, flags);
+ return ret;
+}
+
+static void
+gtp_rb_put_page(struct gtp_rb_s *rb, void *page, int page_is_empty)
+{
+ void *prev, *next;
+ unsigned long flags;
+
+ GTP_RB_LOCK_IRQ(rb, flags);
+
+ if (page_is_empty) {
+ page = GTP_RB_DATA(page);
+ if (rb->w == GTP_RB_DATA(rb->w)) {
+ /* Set page before rb->w and set it as rb->w.
+ If need, set it as rb->r. */
+ prev = GTP_RB_PREV(rb->w);
+ next = rb->w;
+ if (rb->r == rb->w)
+ rb->r = page;
+ rb->w = page;
+ } else {
+ /* Set page after rb->w. */
+ prev = GTP_RB_DATA(rb->w);
+ next = GTP_RB_NEXT(rb->w);
+ }
+ } else {
+ if (rb->r == GTP_RB_DATA(rb->r)) {
+ /* Current rb->r page is point to the begin of a page.
+ Set page before rb->r and set it as rb->r. */
+ prev = GTP_RB_PREV(rb->r);
+ next = rb->r;
+ } else {
+ /* Current rb->r page is not point to the begin of a
+ page, give up this data.
+ Set page after rb->r and set it as rb->r. */
+ prev = GTP_RB_DATA(rb->r);
+ next = GTP_RB_NEXT(rb->r);
+ }
+ rb->r = page;
+ }
+
+ GTP_RB_NEXT(prev) = GTP_RB_DATA(page);
+ GTP_RB_PREV(next) = GTP_RB_DATA(page);
+ GTP_RB_PREV(page) = prev;
+ GTP_RB_NEXT(page) = next;
+
+ GTP_RB_UNLOCK_IRQ(rb, flags);
+}
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