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

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

Signed-off-by: Qais Yousef <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Dietmar Eggemann <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Pavankumar Kondeti <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Quentin Perret <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Uwe Kleine-Konig <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Qais Yousef 2019-06-04 12:14:57 +01:00 • committed by Ingo Molnar
commit 8de6242cca
3 changed files with 7 additions and 0 deletions
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1
kernel/sched/fair.c
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@ -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;
}

2
kernel/sched/pelt.c
View file

@ -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;
}