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Commit a4b0c3ac authored by Juri Lelli's avatar Juri Lelli Committed by Dmitry Shmidt
Browse files

ANDROID: DEBUG: sched: add tracepoint for task load/util signals 



Signed-off-by: default avatarJuri Lelli <juri.lelli@arm.com>
Signed-off-by: default avatarAndres Oportus <andresoportus@google.com>
parent 0a942008

include/trace/events/sched.h

+43 −0
Original line number Diff line number Diff line
@@ -610,6 +610,49 @@ 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 */

kernel/sched/fair.c

+3 −0
Original line number Diff line number Diff line
@@ -3085,6 +3085,9 @@ static inline void update_load_avg(struct sched_entity *se, int update_tg) 


	if (update_cfs_rq_load_avg(now, cfs_rq, true) && update_tg)

		update_tg_load_avg(cfs_rq, 0);



	if (entity_is_task(se))

		trace_sched_load_avg_task(task_of(se), &se->avg);

}



/**