From 8de6242cca17d9299e654e29c966d8612d397272 Mon Sep 17 00:00:00 2001 From: Qais Yousef Date: Tue, 4 Jun 2019 12:14:57 +0100 Subject: [PATCH] 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: Qais Yousef Signed-off-by: Peter Zijlstra (Intel) Cc: Dietmar Eggemann Cc: Linus Torvalds Cc: Pavankumar Kondeti Cc: Peter Zijlstra Cc: Quentin Perret Cc: Sebastian Andrzej Siewior Cc: Steven Rostedt Cc: Thomas Gleixner Cc: Uwe Kleine-Konig Link: https://lkml.kernel.org/r/20190604111459.2862-5-qais.yousef@arm.com Signed-off-by: Ingo Molnar --- include/trace/events/sched.h | 4 ++++ kernel/sched/fair.c | 1 + kernel/sched/pelt.c | 2 ++ 3 files changed, 7 insertions(+) diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 520b89d384ec..c7dd9bc7f001 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -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 */ diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e883d7e17e36..75218ab1fa07 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -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; } diff --git a/kernel/sched/pelt.c b/kernel/sched/pelt.c index 4e961b55b5ea..a96db50d40e0 100644 --- a/kernel/sched/pelt.c +++ b/kernel/sched/pelt.c @@ -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; }