Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bf6cd4d1 authored by Patrick Bellasi's avatar Patrick Bellasi Committed by Chris Redpath
Browse files

events: add tracepoint for find_best_target 



Change-Id: I4c245ffacb207d7ea826c5763a426efe5399e0a2
Signed-off-by: default avatarPatrick Bellasi <patrick.bellasi@arm.com>
parent 5680f23f

include/trace/events/sched.h

+42 −0
Original line number Original line Diff line number Diff line
@@ -877,6 +877,48 @@ TRACE_EVENT(sched_boost_task, 
		  __entry->margin)

		  __entry->margin)

);

);





/*

 * Tracepoint for find_best_target

 */

TRACE_EVENT(sched_find_best_target,



	TP_PROTO(struct task_struct *tsk, bool prefer_idle,

		unsigned long min_util, int start_cpu,

		int best_idle, int best_active, int target),



	TP_ARGS(tsk, prefer_idle, min_util, start_cpu,

		best_idle, best_active, target),



	TP_STRUCT__entry(

		__array( char,	comm,	TASK_COMM_LEN	)

		__field( pid_t,	pid			)

		__field( unsigned long,	min_util	)

		__field( bool,	prefer_idle		)

		__field( int,	start_cpu		)

		__field( int,	best_idle		)

		__field( int,	best_active		)

		__field( int,	target			)

	),



	TP_fast_assign(

		memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);

		__entry->pid		= tsk->pid;

		__entry->min_util	= min_util;

		__entry->prefer_idle	= prefer_idle;

		__entry->start_cpu 	= start_cpu;

		__entry->best_idle	= best_idle;

		__entry->best_active	= best_active;

		__entry->target		= target;

	),



	TP_printk("pid=%d comm=%s prefer_idle=%d start_cpu=%d "

		  "best_idle=%d best_active=%d target=%d",

		__entry->pid, __entry->comm,

		__entry->prefer_idle, __entry->start_cpu,

		__entry->best_idle, __entry->best_active,

		__entry->target)

);



/*

/*

 * Tracepoint for accounting sched group energy

 * Tracepoint for accounting sched group energy

 */

 */

kernel/sched/fair.c

+10 −0
Original line number Original line Diff line number Diff line
@@ -6291,6 +6291,12 @@ static inline int find_best_target(struct task_struct *p, bool boosted, bool pre 
				if (idle_cpu(i)) {

				if (idle_cpu(i)) {

					schedstat_inc(p, se.statistics.nr_wakeups_fbt_pref_idle);

					schedstat_inc(p, se.statistics.nr_wakeups_fbt_pref_idle);

					schedstat_inc(this_rq(), eas_stats.fbt_pref_idle);

					schedstat_inc(this_rq(), eas_stats.fbt_pref_idle);



					trace_sched_find_best_target(p,

							prefer_idle, min_util,

							cpu, best_idle_cpu,

							best_active_cpu, i);



					return i;

					return i;

				}

				}
@@ -6433,6 +6439,10 @@ static inline int find_best_target(struct task_struct *p, bool boosted, bool pre 
			? best_active_cpu

			? best_active_cpu

			: best_idle_cpu;

			: best_idle_cpu;





	trace_sched_find_best_target(p, prefer_idle, min_util, cpu,

				     best_idle_cpu, best_active_cpu,

				     target_cpu);



	schedstat_inc(p, se.statistics.nr_wakeups_fbt_count);

	schedstat_inc(p, se.statistics.nr_wakeups_fbt_count);

	schedstat_inc(this_rq(), eas_stats.fbt_count);

	schedstat_inc(this_rq(), eas_stats.fbt_count);