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Commit 468a15bb authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

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: default avatarPeter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 0ca59dd9

include/trace/sched.h

+2 −2
Original line number Diff line number Diff line
@@ -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),

kernel/sched.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

kernel/trace/trace_sched_switch.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

kernel/trace/trace_sched_wakeup.c

+1 −1
Original line number Diff line number Diff line
@@ -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;