[RFC V3 09/20] rv/monitor: wip instrumentation and Makefile/Kconfig entries
From: Daniel Bristot de Oliveira
Date: Thu May 05 2022 - 12:08:35 EST
Adds the instrumentation to the previously created wip monitor, as an
example of the developer work. It also adds a Makefile and Kconfig
entries.
This is a good example of the manual work that is left for the
developer to do.
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
Cc: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Cc: Gabriele Paoloni <gpaoloni@xxxxxxxxxx>
Cc: Juri Lelli <juri.lelli@xxxxxxxxxx>
Cc: Clark Williams <williams@xxxxxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-trace-devel@xxxxxxxxxxxxxxx
Signed-off-by: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>
---
kernel/trace/rv/Kconfig | 7 ++++++
kernel/trace/rv/Makefile | 1 +
kernel/trace/rv/monitor_wip/model.h | 2 +-
kernel/trace/rv/monitor_wip/wip.c | 33 +++++++++++++----------------
kernel/trace/rv/monitor_wip/wip.h | 2 +-
5 files changed, 25 insertions(+), 20 deletions(-)
diff --git a/kernel/trace/rv/Kconfig b/kernel/trace/rv/Kconfig
index 560408fec0c8..f2549cdd2de8 100644
--- a/kernel/trace/rv/Kconfig
+++ b/kernel/trace/rv/Kconfig
@@ -13,6 +13,13 @@ menuconfig RV
if RV
+config RV_MON_WIP
+ depends on PREEMPTIRQ_TRACEPOINTS
+ bool "WIP monitor"
+ help
+ Enable WIP sample monitor, this is a sample monitor that
+ illustrates the usage of per-cpu monitors.
+
config RV_REACTORS
bool "Runtime verification reactors"
default y if RV
diff --git a/kernel/trace/rv/Makefile b/kernel/trace/rv/Makefile
index 8944274d9b41..20f30741b933 100644
--- a/kernel/trace/rv/Makefile
+++ b/kernel/trace/rv/Makefile
@@ -2,3 +2,4 @@
obj-$(CONFIG_RV) += rv.o
obj-$(CONFIG_RV_REACTORS) += rv_reactors.o
+obj-$(CONFIG_RV_MON_WIP) += monitor_wip/wip.o
diff --git a/kernel/trace/rv/monitor_wip/model.h b/kernel/trace/rv/monitor_wip/model.h
index 5212ba5b1dfb..8f82388f9f55 100644
--- a/kernel/trace/rv/monitor_wip/model.h
+++ b/kernel/trace/rv/monitor_wip/model.h
@@ -35,4 +35,4 @@ struct automaton_wip automaton_wip = {
},
.initial_state = preemptive,
.final_states = { 1, 0 },
-};
\ No newline at end of file
+};
diff --git a/kernel/trace/rv/monitor_wip/wip.c b/kernel/trace/rv/monitor_wip/wip.c
index cd7795b282d6..8dcee668959f 100644
--- a/kernel/trace/rv/monitor_wip/wip.c
+++ b/kernel/trace/rv/monitor_wip/wip.c
@@ -8,12 +8,10 @@
#include <rv/instrumentation.h>
#include <rv/da_monitor.h>
-#define MODULE_NAME "wip"
+#include <trace/events/sched.h>
+#include <trace/events/preemptirq.h>
-/*
- * XXX: include required tracepoint headers, e.g.,
- * #include <linux/trace/events/sched.h>
- */
+#define MODULE_NAME "wip"
/*
* This is the self-generated part of the monitor. Generally, there is no need
@@ -39,22 +37,21 @@ DECLARE_DA_MON_PER_CPU(wip, char);
* are translated into model's event.
*
*/
-static void handle_preempt_disable(void *data, /* XXX: fill header */)
+static void handle_preempt_disable(void *data, unsigned long ip, unsigned long parent_ip)
{
da_handle_event_wip(preempt_disable);
}
-static void handle_preempt_enable(void *data, /* XXX: fill header */)
+static void handle_preempt_enable(void *data, unsigned long ip, unsigned long parent_ip)
{
- da_handle_event_wip(preempt_enable);
+ da_handle_init_event_wip(preempt_enable);
}
-static void handle_sched_waking(void *data, /* XXX: fill header */)
+static void handle_sched_waking(void *data, struct task_struct *task)
{
da_handle_event_wip(sched_waking);
}
-
static int start_wip(void)
{
int retval;
@@ -63,9 +60,9 @@ static int start_wip(void)
if (retval)
return retval;
- rv_attach_trace_probe("wip", /* XXX: tracepoint */, handle_preempt_disable);
- rv_attach_trace_probe("wip", /* XXX: tracepoint */, handle_preempt_enable);
- rv_attach_trace_probe("wip", /* XXX: tracepoint */, handle_sched_waking);
+ rv_attach_trace_probe("wip", preempt_disable, handle_preempt_disable);
+ rv_attach_trace_probe("wip", preempt_enable, handle_preempt_enable);
+ rv_attach_trace_probe("wip", sched_waking, handle_sched_waking);
return 0;
}
@@ -74,9 +71,9 @@ static void stop_wip(void)
{
rv_wip.enabled = 0;
- rv_detach_trace_probe("wip", /* XXX: tracepoint */, handle_preempt_disable);
- rv_detach_trace_probe("wip", /* XXX: tracepoint */, handle_preempt_enable);
- rv_detach_trace_probe("wip", /* XXX: tracepoint */, handle_sched_waking);
+ rv_detach_trace_probe("wip", preempt_disable, handle_preempt_disable);
+ rv_detach_trace_probe("wip", preempt_enable, handle_preempt_enable);
+ rv_detach_trace_probe("wip", sched_waking, handle_sched_waking);
da_monitor_destroy_wip();
}
@@ -111,5 +108,5 @@ module_init(register_wip);
module_exit(unregister_wip);
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("dot2k: auto-generated");
-MODULE_DESCRIPTION("wip");
+MODULE_AUTHOR("Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>");
+MODULE_DESCRIPTION("wip: wakeup in preemptive - per-cpu sample monitor.");
diff --git a/kernel/trace/rv/monitor_wip/wip.h b/kernel/trace/rv/monitor_wip/wip.h
index 7a751a8896e9..1ba58a5781ff 100644
--- a/kernel/trace/rv/monitor_wip/wip.h
+++ b/kernel/trace/rv/monitor_wip/wip.h
@@ -59,6 +59,6 @@ TRACE_EVENT(error_wip,
/* This part ust be outside protection */
#undef TRACE_INCLUDE_PATH
-#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_PATH ../kernel/trace/rv/monitor_wip/
#define TRACE_INCLUDE_FILE wip
#include <trace/define_trace.h>
--
2.35.1