From: Vincent Donnefort <[email protected]> The util_est signals are key elements for EAS task placement and frequency selection. Having tracepoints to track these signals enables load-tracking and schedutil testing and/or debugging by a toolkit.
Signed-off-by: Vincent Donnefort <[email protected]> diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index ed168b0..04f9a4c 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -634,6 +634,14 @@ DECLARE_TRACE(sched_overutilized_tp, TP_PROTO(struct root_domain *rd, bool overutilized), TP_ARGS(rd, overutilized)); +DECLARE_TRACE(sched_util_est_cfs_tp, + TP_PROTO(struct cfs_rq *cfs_rq), + TP_ARGS(cfs_rq)); + +DECLARE_TRACE(sched_util_est_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/core.c b/kernel/sched/core.c index 9228236..ecff02b 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -35,6 +35,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_dl_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_irq_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_se_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(sched_overutilized_tp); +EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_cfs_tp); +EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_se_tp); DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 174d2df..cfc0e06 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3922,6 +3922,8 @@ static inline void util_est_enqueue(struct cfs_rq *cfs_rq, enqueued = cfs_rq->avg.util_est.enqueued; enqueued += _task_util_est(p); WRITE_ONCE(cfs_rq->avg.util_est.enqueued, enqueued); + + trace_sched_util_est_cfs_tp(cfs_rq); } /* @@ -3952,6 +3954,8 @@ util_est_dequeue(struct cfs_rq *cfs_rq, struct task_struct *p, bool task_sleep) ue.enqueued -= min_t(unsigned int, ue.enqueued, _task_util_est(p)); WRITE_ONCE(cfs_rq->avg.util_est.enqueued, ue.enqueued); + trace_sched_util_est_cfs_tp(cfs_rq); + /* * Skip update of task's estimated utilization when the task has not * yet completed an activation, e.g. being migrated. @@ -4017,6 +4021,8 @@ util_est_dequeue(struct cfs_rq *cfs_rq, struct task_struct *p, bool task_sleep) ue.ewma >>= UTIL_EST_WEIGHT_SHIFT; done: WRITE_ONCE(p->se.avg.util_est, ue); + + trace_sched_util_est_se_tp(&p->se); } static inline int task_fits_capacity(struct task_struct *p, long capacity) -- 2.7.4
