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sched, trace: update trace_sched_wakeup()

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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>
This commit is contained in:
Peter Zijlstra 2008-12-16 08:07:03 +01:00 committed by Ingo Molnar
parent 0ca59dd948
commit 468a15bb4c
4 changed files with 5 additions and 5 deletions
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4
include/trace/sched.h
View File

@ -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),

2
kernel/sched.c
View File

@ -2324,7 +2324,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
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;

2
kernel/trace/trace_sched_switch.c
View File

@ -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;

2
kernel/trace/trace_sched_wakeup.c
View File

@ -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;