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| author | Ingo Molnar <mingo@elte.hu> | 2008-05-12 21:20:41 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 20:30:55 +0200 |
| commit | bd3bff9e20f454b242d979ec2f9a4dca0d5fa06f (patch) | |
| tree | f9aa5959cb63a0c9d51185109264dd0b0f547765 /kernel/sched.c | |
| parent | 75d3bce2fc0a80f435fe12f2c9ed2632c8ac29e4 (diff) | |
| download | blackbird-op-linux-bd3bff9e20f454b242d979ec2f9a4dca0d5fa06f.tar.gz blackbird-op-linux-bd3bff9e20f454b242d979ec2f9a4dca0d5fa06f.zip | |
sched: add latency tracer callbacks to the scheduler
add 3 lightweight callbacks to the tracer backend.
zero impact if tracing is turned off.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index cfa222a91539..463dcdb36ef8 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2467,6 +2467,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync) out_activate: #endif /* CONFIG_SMP */ + ftrace_wake_up_task(p, rq->curr); schedstat_inc(p, se.nr_wakeups); if (sync) schedstat_inc(p, se.nr_wakeups_sync); @@ -2611,6 +2612,7 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags) p->sched_class->task_new(rq, p); inc_nr_running(rq); } + ftrace_wake_up_new_task(p, rq->curr); check_preempt_curr(rq, p); #ifdef CONFIG_SMP if (p->sched_class->task_wake_up) @@ -2783,6 +2785,7 @@ context_switch(struct rq *rq, struct task_struct *prev, struct mm_struct *mm, *oldmm; prepare_task_switch(rq, prev, next); + ftrace_ctx_switch(prev, next); mm = next->mm; oldmm = prev->active_mm; /* |
