diff options
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0076-sched-events-Introduce-cfs_rq-PELT-trace-event-sched.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0076-sched-events-Introduce-cfs_rq-PELT-trace-event-sched.patch | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0076-sched-events-Introduce-cfs_rq-PELT-trace-event-sched.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0076-sched-events-Introduce-cfs_rq-PELT-trace-event-sched.patch new file mode 100644 index 0000000..950e7a9 --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0076-sched-events-Introduce-cfs_rq-PELT-trace-event-sched.patch @@ -0,0 +1,121 @@ +From 1f93576e19b38a0df4203faaf07b656e5f24b6f8 Mon Sep 17 00:00:00 2001 +From: Dietmar Eggemann <dietmar.eggemann@arm.com> +Date: Mon, 9 Nov 2015 12:07:27 +0000 +Subject: [PATCH 76/92] sched/events: Introduce cfs_rq PELT trace event + sched_pelt_cfs_rq() + +The trace event is only defined if symmetric multi-processing +(CONFIG_SMP) is enabled. +To let this trace event work for configurations with and without group +scheduling support for SCHED_OTHER (CONFIG_FAIR_GROUP_SCHED) the +following special handling is necessary for non-existent key=value +pairs: + +id = -1 : In case of !CONFIG_FAIR_GROUP_SCHED the task group css id is + set to -1. + +Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> +(cherry picked from commit 1c61904cbc5998b19dc8c04bb0cfc99f9a8ec9db) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + include/trace/events/sched.h | 51 ++++++++++++++++++++++++++++++++++++++++++++ + kernel/sched/fair.c | 7 ++++++ + 2 files changed, 58 insertions(+) + +diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h +index 9b90c57..c9c3348 100644 +--- a/include/trace/events/sched.h ++++ b/include/trace/events/sched.h +@@ -562,6 +562,57 @@ static inline long __trace_sched_switch_state(bool preempt, struct task_struct * + + TP_printk("cpu=%d", __entry->cpu) + ); ++ ++#ifdef CONFIG_SMP ++/* ++ * Tracepoint for cfs_rq Per Entity Load Tracking (PELT). ++ */ ++TRACE_EVENT(sched_pelt_cfs_rq, ++ ++ TP_PROTO(struct cfs_rq *cfs_rq), ++ ++ TP_ARGS(cfs_rq), ++ ++ TP_STRUCT__entry( ++ __field( int, cpu ) ++ __field( int, id ) ++ __field( unsigned long, load_avg ) ++ __field( unsigned long, util_avg ) ++ __field( u64, load_sum ) ++ __field( u32, util_sum ) ++ __field( u32, period_contrib ) ++ __field( u64, last_update_time ) ++ __field( unsigned long, runnable_load_avg ) ++ __field( u64, runnable_load_sum ) ++ ), ++ ++ TP_fast_assign( ++#ifdef CONFIG_FAIR_GROUP_SCHED ++ __entry->cpu = cfs_rq->rq->cpu; ++ __entry->id = cfs_rq->tg->css.id; ++#else ++ __entry->cpu = (container_of(cfs_rq, struct rq, cfs))->cpu; ++ __entry->id = -1; ++#endif ++ __entry->load_avg = cfs_rq->avg.load_avg; ++ __entry->util_avg = cfs_rq->avg.util_avg; ++ __entry->load_sum = cfs_rq->avg.load_sum; ++ __entry->util_sum = cfs_rq->avg.util_sum; ++ __entry->period_contrib = cfs_rq->avg.period_contrib; ++ __entry->last_update_time = cfs_rq->avg.last_update_time; ++ __entry->runnable_load_avg = cfs_rq->runnable_load_avg; ++ __entry->runnable_load_sum = cfs_rq->runnable_load_sum; ++ ), ++ ++ TP_printk("cpu=%d tg_css_id=%d load_avg=%lu util_avg=%lu" ++ " load_sum=%llu util_sum=%u period_contrib=%u last_update_time=%llu" ++ " runnable_load_avg=%lu runnable_load_sum=%llu", ++ __entry->cpu, __entry->id, __entry->load_avg, ++ __entry->util_avg, __entry->load_sum, __entry->util_sum, ++ __entry->period_contrib, __entry->last_update_time, ++ __entry->runnable_load_avg, __entry->runnable_load_sum) ++); ++#endif /* CONFIG_SMP */ + #endif /* _TRACE_SCHED_H */ + + /* This part must be outside protection */ +diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c +index bc347af..03b4666 100644 +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -2931,6 +2931,9 @@ static u32 __compute_runnable_contrib(u64 n) + sa->util_avg = sa->util_sum / LOAD_AVG_MAX; + } + ++ if (cfs_rq) ++ trace_sched_pelt_cfs_rq(cfs_rq); ++ + return decayed; + } + +@@ -3310,6 +3313,8 @@ static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s + set_tg_cfs_propagate(cfs_rq); + + cfs_rq_util_change(cfs_rq); ++ ++ trace_sched_pelt_cfs_rq(cfs_rq); + } + + /** +@@ -3330,6 +3335,8 @@ static void detach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s + set_tg_cfs_propagate(cfs_rq); + + cfs_rq_util_change(cfs_rq); ++ ++ trace_sched_pelt_cfs_rq(cfs_rq); + } + + /* Add the load generated by se into cfs_rq's load average */ +-- +1.9.1 + |