[PATCH 16/22 -v7] Add marker in try_to_wake_up

Steven Rostedt
2008-01-30T03:26:06Z

[-- Attachment #1: add-markers-to-wakeup.patch --]
[-- Type: text/plain, Size: 1040 bytes --]

Add markers into the wakeup code, to allow the tracer to
record wakeup timings.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
kernel/sched.c | 8 ++++++++
1 file changed, 8 insertions(+)

Index: linux-mcount.git/kernel/sched.c
===================================================================
--- linux-mcount.git.orig/kernel/sched.c 2008-01-25 21:47:21.000000000 -0500
+++ linux-mcount.git/kernel/sched.c 2008-01-25 21:47:30.000000000 -0500
@@ -1885,6 +1885,10 @@ static int try_to_wake_up(struct task_st

out_activate:
#endif /* CONFIG_SMP */
+ trace_mark(kernel_sched_wakeup,
+ "p %p rq->curr %p",
+ p, rq->curr);
+
schedstat_inc(p, se.nr_wakeups);
if (sync)
schedstat_inc(p, se.nr_wakeups_sync);
@@ -2026,6 +2030,10 @@ void fastcall wake_up_new_task(struct ta
p->sched_class->task_new(rq, p);
inc_nr_running(p, rq);
}
+ trace_mark(kernel_sched_wakeup_new,
+ "p %p rq->curr %p",
+ p, rq->curr);
+
check_preempt_curr(rq, p);
#ifdef CONFIG_SMP
if (p->sched_class->task_wake_up)

--