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Commit 3124a5b9 authored by Chris Redpath's avatar Chris Redpath Committed by Quentin Perret
Browse files

ANDROID: sched/events: Introduce rt_rq load tracking trace event 



We want to be able to track rt_rq signals same as we do for other RQs.

Signed-off-by: default avatarChris Redpath <chris.redpath@arm.com>
(cherry-picked from commit 574a2d189695c334ae290f522b098f05398a3765)
[ - Fixed conflicts with the refactored RT util_avg tracking
  - Changed commit title for consistency with other tracepoint patches ]
Signed-off-by: default avatarQuentin Perret <quentin.perret@arm.com>
Change-Id: I38b64baa50e1ff86019ca4b8b0a04af994880b35
parent 8c850534

include/trace/events/sched.h

+24 −0
Original line number Diff line number Diff line
@@ -647,6 +647,30 @@ TRACE_EVENT(sched_load_cfs_rq, 
		  __entry->rbl_load,__entry->util)

);



/*

 * Tracepoint for rt_rq load tracking:

 */

struct rq;

TRACE_EVENT(sched_load_rt_rq,



	TP_PROTO(struct rq *rq),



	TP_ARGS(rq),



	TP_STRUCT__entry(

		__field(	int,		cpu			)

		__field(	unsigned long,	util			)

	),



	TP_fast_assign(

		__entry->cpu	= rq->cpu;

		__entry->util	= rq->avg_rt.util_avg;

	),



	TP_printk("cpu=%d util=%lu", __entry->cpu,

		  __entry->util)

);



/*

 * Tracepoint for sched_entity load tracking:

 */

kernel/sched/pelt.c

+3 −0
Original line number Diff line number Diff line
@@ -340,6 +340,9 @@ int update_rt_rq_load_avg(u64 now, struct rq *rq, int running) 
				running)) {



		___update_load_avg(&rq->avg_rt, 1, 1);



		trace_sched_load_rt_rq(rq);



		return 1;

	}