Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8de6242c authored by Qais Yousef's avatar Qais Yousef Committed by Ingo Molnar
Browse files

sched/debug: Add new tracepoint to track PELT at se level 



The new tracepoint allows tracking PELT signals at sched_entity level.
Which is supported in CFS tasks and taskgroups only.

Signed-off-by: default avatarQais Yousef <qais.yousef@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Perret <quentin.perret@arm.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uwe Kleine-Konig <u.kleine-koenig@pengutronix.de>
Link: https://lkml.kernel.org/r/20190604111459.2862-5-qais.yousef@arm.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent ba19f51f

include/trace/events/sched.h

+4 −0
Original line number Diff line number Diff line
@@ -617,6 +617,10 @@ DECLARE_TRACE(pelt_irq_tp, 
	TP_PROTO(struct rq *rq),

	TP_ARGS(rq));



DECLARE_TRACE(pelt_se_tp,

	TP_PROTO(struct sched_entity *se),

	TP_ARGS(se));



#endif /* _TRACE_SCHED_H */



/* This part must be outside protection */

kernel/sched/fair.c

+1 −0
Original line number Diff line number Diff line
@@ -3348,6 +3348,7 @@ static inline int propagate_entity_load_avg(struct sched_entity *se) 
	update_tg_cfs_runnable(cfs_rq, se, gcfs_rq);



	trace_pelt_cfs_tp(cfs_rq);

	trace_pelt_se_tp(se);



	return 1;

}

kernel/sched/pelt.c

+2 −0
Original line number Diff line number Diff line
@@ -267,6 +267,7 @@ int __update_load_avg_blocked_se(u64 now, struct sched_entity *se) 
{

	if (___update_load_sum(now, &se->avg, 0, 0, 0)) {

		___update_load_avg(&se->avg, se_weight(se), se_runnable(se));

		trace_pelt_se_tp(se);

		return 1;

	}
@@ -280,6 +281,7 @@ int __update_load_avg_se(u64 now, struct cfs_rq *cfs_rq, struct sched_entity *se 


		___update_load_avg(&se->avg, se_weight(se), se_runnable(se));

		cfs_se_util_change(&se->avg);

		trace_pelt_se_tp(se);

		return 1;

	}