diff options
| author | Juri Lelli <juri.lelli@arm.com> | 2015-11-09 12:07:27 +0000 |
|---|---|---|
| committer | Punit Agrawal <punit.agrawal@arm.com> | 2016-03-21 14:57:42 +0000 |
| commit | 1b79543f25c0047013e8e6b64df9f01e248de8ea (patch) | |
| tree | 51b24e7fafb4bea1e9102ec9741525849f7f4a93 | |
| parent | 5c6c1646ff57407e5dfc386b47aedcfe22534ebd (diff) | |
DEBUG: sched: add tracepoint for task load/util signals
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
| -rw-r--r-- | include/trace/events/sched.h | 43 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 3 |
2 files changed, 46 insertions, 0 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 20a7216f8abb..99f3e648c197 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -586,6 +586,49 @@ TRACE_EVENT(sched_contrib_scale_f, __entry->cpu, __entry->freq_scale_factor, __entry->cpu_scale_factor) ); + +/* + * Tracepoint for accounting sched averages for tasks. + */ +TRACE_EVENT(sched_load_avg_task, + + TP_PROTO(struct task_struct *tsk, struct sched_avg *avg), + + TP_ARGS(tsk, avg), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( int, cpu ) + __field( unsigned long, load_avg ) + __field( unsigned long, util_avg ) + __field( u64, load_sum ) + __field( u32, util_sum ) + __field( u32, period_contrib ) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = tsk->pid; + __entry->cpu = task_cpu(tsk); + __entry->load_avg = avg->load_avg; + __entry->util_avg = avg->util_avg; + __entry->load_sum = avg->load_sum; + __entry->util_sum = avg->util_sum; + __entry->period_contrib = avg->period_contrib; + ), + + TP_printk("comm=%s pid=%d cpu=%d load_avg=%lu util_avg=%lu load_sum=%llu" + " util_sum=%u period_contrib=%u", + __entry->comm, + __entry->pid, + __entry->cpu, + __entry->load_avg, + __entry->util_avg, + (u64)__entry->load_sum, + (u32)__entry->util_sum, + (u32)__entry->period_contrib) +); #endif /* _TRACE_SCHED_H */ /* This part must be outside protection */ diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index ec2e8aecc4f3..8cdb4e5592f9 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2731,6 +2731,9 @@ static inline void update_load_avg(struct sched_entity *se, int update_tg) if (update_cfs_rq_load_avg(now, cfs_rq) && update_tg) update_tg_load_avg(cfs_rq, 0); + + if (entity_is_task(se)) + trace_sched_load_avg_task(task_of(se), &se->avg); } static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se) |