[tip:perf/core] perf trace: Tell arg formatters the arg index
From: tip-bot for Arnaldo Carvalho de Melo
Date: Tue Sep 03 2013 - 03:18:03 EST
Commit-ID: 31cd3855c98119cae287b761d8d2e75018714c5d
Gitweb: http://git.kernel.org/tip/31cd3855c98119cae287b761d8d2e75018714c5d
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 2 Sep 2013 16:40:40 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 2 Sep 2013 16:40:40 -0300
perf trace: Tell arg formatters the arg index
... so that it can mask args relative to its position, like the 'mode' arg
that may or not be printed according to the 'flags' (O_CREAT) value.
[root@zoo ~]# perf trace -a -e openat,open_by_handle_at | head -1
469.754 ( 0.034 ms): 1183 openat(dfd: -100, filename: 0x7fbde40014b0, flags: CLOEXEC|DIRECTORY|NONBLOCK) = 23
[root@zoo ~]#
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-bgokqpkufd4sio7ixxknf1ux@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-trace.c | 36 +++++++++++++++++++++++++-----------
1 file changed, 25 insertions(+), 11 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 5b6b287..b6f0725 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -17,7 +17,9 @@
#include <linux/futex.h>
static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
return scnprintf(bf, size, "%#lx", arg);
}
@@ -25,7 +27,9 @@ static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
#define SCA_HEX syscall_arg__scnprintf_hex
static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int whence = arg;
@@ -50,7 +54,9 @@ static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
#define SCA_WHENCE syscall_arg__scnprintf_whence
static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int printed = 0, prot = arg;
@@ -81,7 +87,8 @@ static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot
static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg, u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int printed = 0, flags = arg;
@@ -122,7 +129,8 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg, u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int behavior = arg;
@@ -163,7 +171,8 @@ static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
-static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg, u8 *arg_mask)
+static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg,
+ u8 arg_idx __maybe_unused, u8 *arg_mask)
{
enum syscall_futex_args {
SCF_UADDR = (1 << 0),
@@ -207,12 +216,13 @@ static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned lo
#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask)
+ unsigned long arg,
+ u8 arg_idx, u8 *arg_mask)
{
int printed = 0, flags = arg;
if (!(flags & O_CREAT))
- *arg_mask |= 1 << 2; /* Mask the mode parm */
+ *arg_mask |= 1 << (arg_idx + 1); /* Mask the mode parm */
if (flags == 0)
return scnprintf(bf, size, "RDONLY");
@@ -265,7 +275,7 @@ static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
static struct syscall_fmt {
const char *name;
const char *alias;
- size_t (*arg_scnprintf[6])(char *bf, size_t size, unsigned long arg, u8 *arg_mask);
+ size_t (*arg_scnprintf[6])(char *bf, size_t size, unsigned long arg, u8 arg_idx, u8 *arg_mask);
bool errmsg;
bool timeout;
bool hexret;
@@ -302,6 +312,10 @@ static struct syscall_fmt {
.arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
{ .name = "open", .errmsg = true,
.arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "open_by_handle_at", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "openat", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, },
{ .name = "poll", .errmsg = true, .timeout = true, },
{ .name = "ppoll", .errmsg = true, .timeout = true, },
{ .name = "pread", .errmsg = true, .alias = "pread64", },
@@ -332,7 +346,7 @@ struct syscall {
bool filtered;
struct syscall_fmt *fmt;
size_t (**arg_scnprintf)(char *bf, size_t size,
- unsigned long arg, u8 *args_mask);
+ unsigned long arg, u8 arg_idx, u8 *args_mask);
};
static size_t fprintf_duration(unsigned long t, FILE *fp)
@@ -589,7 +603,7 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
if (sc->arg_scnprintf && sc->arg_scnprintf[i]) {
printed += sc->arg_scnprintf[i](bf + printed, size - printed,
- args[i], &mask);
+ args[i], i, &mask);
} else {
printed += scnprintf(bf + printed, size - printed,
"%ld", args[i]);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/