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Commit 4525aa34 authored by Patrick Bellasi's avatar Patrick Bellasi Committed by John Stultz
Browse files

DEBUG: sched/tune: add tracepoint for energy_diff() values 



Change-Id: Id8fafbd85f6d81248f322e073ee790a7ceec0bf7
Signed-off-by: default avatarPatrick Bellasi <patrick.bellasi@arm.com>
parent 962b7c10

include/trace/events/sched.h

+57 −0
Original line number Diff line number Diff line
@@ -794,6 +794,63 @@ TRACE_EVENT(sched_boost_task, 
		  __entry->margin)

);



/*

 * Tracepoint for accounting sched group energy

 */

TRACE_EVENT(sched_energy_diff,



	TP_PROTO(struct task_struct *tsk, int scpu, int dcpu, int udelta,

		int nrgb, int nrga, int nrgd, int capb, int capa, int capd,

		int nrgn, int nrgp),



	TP_ARGS(tsk, scpu, dcpu, udelta,

		nrgb, nrga, nrgd, capb, capa, capd,

		nrgn, nrgp),



	TP_STRUCT__entry(

		__array( char,	comm,	TASK_COMM_LEN	)

		__field( pid_t,	pid	)

		__field( int,	scpu	)

		__field( int,	dcpu	)

		__field( int,	udelta	)

		__field( int,	nrgb	)

		__field( int,	nrga	)

		__field( int,	nrgd	)

		__field( int,	capb	)

		__field( int,	capa	)

		__field( int,	capd	)

		__field( int,	nrgn	)

		__field( int,	nrgp	)

	),



	TP_fast_assign(

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

		__entry->pid		= tsk->pid;

		__entry->scpu 		= scpu;

		__entry->dcpu 		= dcpu;

		__entry->udelta 	= udelta;

		__entry->nrgb 		= nrgb;

		__entry->nrga 		= nrga;

		__entry->nrgd 		= nrgd;

		__entry->capb 		= capb;

		__entry->capa 		= capa;

		__entry->capd 		= capd;

		__entry->nrgn 		= nrgn;

		__entry->nrgp 		= nrgp;

	),



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

			"src_cpu=%d dst_cpu=%d usage_delta=%d "

			"nrg_before=%d nrg_after=%d nrg_diff=%d "

			"cap_before=%d cap_after=%d cap_delta=%d "

			"nrg_delta=%d nrg_payoff=%d",

		__entry->pid, __entry->comm,

		__entry->scpu, __entry->dcpu, __entry->udelta,

		__entry->nrgb, __entry->nrga, __entry->nrgd,

		__entry->capb, __entry->capa, __entry->capd,

		__entry->nrgn, __entry->nrgp)

);



#endif /* _TRACE_SCHED_H */



/* This part must be outside protection */

kernel/sched/fair.c

+10 −1
Original line number Diff line number Diff line
@@ -4998,6 +4998,7 @@ static int energy_diff(struct energy_env *eenv) 
	struct sched_domain *sd;

	struct sched_group *sg;

	int sd_cpu = -1, energy_before = 0, energy_after = 0;

	int result;



	struct energy_env eenv_before = {

		.util_delta	= 0,
@@ -5041,7 +5042,15 @@ static int energy_diff(struct energy_env *eenv) 
	eenv->nrg.diff = eenv->nrg.after - eenv->nrg.before;

	eenv->payoff = 0;



	return energy_diff_evaluate(eenv);

	result = energy_diff_evaluate(eenv);



	trace_sched_energy_diff(eenv->task,

			eenv->src_cpu, eenv->dst_cpu, eenv->util_delta,

			eenv->nrg.before, eenv->nrg.after, eenv->nrg.diff,

			eenv->cap.before, eenv->cap.after, eenv->cap.delta,

			eenv->nrg.delta, eenv->payoff);



	return result;

}



/*