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DEBUG: sched: add tracepoint for CPU load/util signals

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Signed-off-by: Juri Lelli <juri.lelli@arm.com>
This commit is contained in:
Juri Lelli 2015-11-09 12:07:48 +00:00 • committed by Amit Pundir
parent c604a5fa23
commit 69852bd9a3
2 changed files with 26 additions and 0 deletions
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25
include/trace/events/sched.h
View file

@ -678,6 +678,31 @@ TRACE_EVENT(sched_load_avg_task,
(u32)__entry->util_sum,
(u32)__entry->period_contrib)
);
/*
* Tracepoint for accounting sched averages for cpus.
*/
TRACE_EVENT(sched_load_avg_cpu,
TP_PROTO(int cpu, struct cfs_rq *cfs_rq),
TP_ARGS(cpu, cfs_rq),
TP_STRUCT__entry(
__field( int, cpu )
__field( unsigned long, load_avg )
__field( unsigned long, util_avg )
),
TP_fast_assign(
__entry->cpu = cpu;
__entry->load_avg = cfs_rq->avg.load_avg;
__entry->util_avg = cfs_rq->avg.util_avg;
),
TP_printk("cpu=%d load_avg=%lu util_avg=%lu",
__entry->cpu, __entry->load_avg, __entry->util_avg)
);
#endif /* _TRACE_SCHED_H */
/* This part must be outside protection */

1
kernel/sched/fair.c
View file

@ -2749,6 +2749,7 @@ static inline void update_load_avg(struct sched_entity *se, int update_tg)
if (entity_is_task(se))
trace_sched_load_avg_task(task_of(se), &se->avg);
trace_sched_load_avg_cpu(cpu, cfs_rq);
}
static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se)