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authorPeter Zijlstra <peterz@infradead.org>2008-12-16 08:07:03 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-25 13:10:21 +0100
commit468a15bb4cc61694495cc5ed7ffca29e87c79b69 (patch)
tree51274b853cc427666925f917203487a69d01c3d9
parent0ca59dd948a51c95d5a366d35f897bc5ef9df55d (diff)
downloadop-kernel-dev-468a15bb4cc61694495cc5ed7ffca29e87c79b69.zip
op-kernel-dev-468a15bb4cc61694495cc5ed7ffca29e87c79b69.tar.gz
sched, trace: update trace_sched_wakeup()
Impact: extend the wakeup tracepoint with the info whether the wakeup was real Add the information needed to distinguish 'real' wakeups from 'false' wakeups. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/trace/sched.h4
-rw-r--r--kernel/sched.c2
-rw-r--r--kernel/trace/trace_sched_switch.c2
-rw-r--r--kernel/trace/trace_sched_wakeup.c2
4 files changed, 5 insertions, 5 deletions
diff --git a/include/trace/sched.h b/include/trace/sched.h
index bc4c9ea..0d81098 100644
--- a/include/trace/sched.h
+++ b/include/trace/sched.h
@@ -17,8 +17,8 @@ DECLARE_TRACE(sched_wait_task,
TPARGS(rq, p));
DECLARE_TRACE(sched_wakeup,
- TPPROTO(struct rq *rq, struct task_struct *p),
- TPARGS(rq, p));
+ TPPROTO(struct rq *rq, struct task_struct *p, int success),
+ TPARGS(rq, p, success));
DECLARE_TRACE(sched_wakeup_new,
TPPROTO(struct rq *rq, struct task_struct *p, int success),
diff --git a/kernel/sched.c b/kernel/sched.c
index ceda579..dcb39bc 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2324,7 +2324,7 @@ out_activate:
success = 1;
out_running:
- trace_sched_wakeup(rq, p);
+ trace_sched_wakeup(rq, p, success);
check_preempt_curr(rq, p, sync);
p->state = TASK_RUNNING;
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c
index add2c1f..df175cb 100644
--- a/kernel/trace/trace_sched_switch.c
+++ b/kernel/trace/trace_sched_switch.c
@@ -49,7 +49,7 @@ probe_sched_switch(struct rq *__rq, struct task_struct *prev,
}
static void
-probe_sched_wakeup(struct rq *__rq, struct task_struct *wakee)
+probe_sched_wakeup(struct rq *__rq, struct task_struct *wakee, int success)
{
struct trace_array_cpu *data;
unsigned long flags;
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 0067b49..43586b6 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -211,7 +211,7 @@ static void wakeup_reset(struct trace_array *tr)
}
static void
-probe_wakeup(struct rq *rq, struct task_struct *p)
+probe_wakeup(struct rq *rq, struct task_struct *p, int success)
{
int cpu = smp_processor_id();
unsigned long flags;
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