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Commit ae54c774 authored by Patrick Bellasi's avatar Patrick Bellasi Committed by John Stultz
Browse files

DEBUG: sched/tune: add tracepoint on P-E space filtering 



Change-Id: I31dfed67c0486713b88efb75df767329f2802e06
Signed-off-by: default avatarPatrick Bellasi <patrick.bellasi@arm.com>
parent 4525aa34

include/trace/events/sched.h

+35 −0
Original line number Diff line number Diff line
@@ -851,6 +851,41 @@ TRACE_EVENT(sched_energy_diff, 
		__entry->nrgn, __entry->nrgp)

);



/*

 * Tracepoint for schedtune_tasks_update

 */

TRACE_EVENT(sched_tune_filter,



	TP_PROTO(int nrg_delta, int cap_delta,

		 int nrg_gain,  int cap_gain,

		 int payoff, int region),



	TP_ARGS(nrg_delta, cap_delta, nrg_gain, cap_gain, payoff, region),



	TP_STRUCT__entry(

		__field( int,	nrg_delta	)

		__field( int,	cap_delta	)

		__field( int,	nrg_gain	)

		__field( int,	cap_gain	)

		__field( int,	payoff		)

		__field( int,	region		)

	),



	TP_fast_assign(

		__entry->nrg_delta	= nrg_delta;

		__entry->cap_delta	= cap_delta;

		__entry->nrg_gain	= nrg_gain;

		__entry->cap_gain	= cap_gain;

		__entry->payoff		= payoff;

		__entry->region		= region;

	),



	TP_printk("nrg_delta=%d cap_delta=%d nrg_gain=%d cap_gain=%d payoff=%d region=%d",

		__entry->nrg_delta, __entry->cap_delta,

		__entry->nrg_gain, __entry->cap_gain,

		__entry->payoff, __entry->region)

);



#endif /* _TRACE_SCHED_H */



/* This part must be outside protection */

kernel/sched/tune.c

+26 −4
Original line number Diff line number Diff line
@@ -70,6 +70,13 @@ __schedtune_accept_deltas(int nrg_delta, int cap_delta, 
		 */

		payoff  = nrg_delta * threshold_gains[perf_boost_idx].cap_gain;

		payoff -= cap_delta * threshold_gains[perf_boost_idx].nrg_gain;



		trace_sched_tune_filter(

				nrg_delta, cap_delta,

				threshold_gains[perf_boost_idx].nrg_gain,

				threshold_gains[perf_boost_idx].cap_gain,

				payoff, 8);



		return payoff;

	}
@@ -84,6 +91,13 @@ __schedtune_accept_deltas(int nrg_delta, int cap_delta, 
		 */

		payoff  = cap_delta * threshold_gains[perf_constrain_idx].nrg_gain;

		payoff -= nrg_delta * threshold_gains[perf_constrain_idx].cap_gain;



		trace_sched_tune_filter(

				nrg_delta, cap_delta,

				threshold_gains[perf_constrain_idx].nrg_gain,

				threshold_gains[perf_constrain_idx].cap_gain,

				payoff, 6);



		return payoff;

	}
@@ -155,12 +169,16 @@ schedtune_accept_deltas(int nrg_delta, int cap_delta, 
	int perf_constrain_idx;



	/* Optimal (O) region */

	if (nrg_delta < 0 && cap_delta > 0)

	if (nrg_delta < 0 && cap_delta > 0) {

		trace_sched_tune_filter(nrg_delta, cap_delta, 0, 0, 1, 0);

		return INT_MAX;

	}



	/* Suboptimal (S) region */

	if (nrg_delta > 0 && cap_delta < 0)

	if (nrg_delta > 0 && cap_delta < 0) {

		trace_sched_tune_filter(nrg_delta, cap_delta, 0, 0, -1, 5);

		return -INT_MAX;

	}



	/* Get task specific perf Boost/Constraints indexes */

	rcu_read_lock();
@@ -531,12 +549,16 @@ schedtune_accept_deltas(int nrg_delta, int cap_delta, 
			struct task_struct *task)

{

	/* Optimal (O) region */

	if (nrg_delta < 0 && cap_delta > 0)

	if (nrg_delta < 0 && cap_delta > 0) {

		trace_sched_tune_filter(nrg_delta, cap_delta, 0, 0, 1, 0);

		return INT_MAX;

	}



	/* Suboptimal (S) region */

	if (nrg_delta > 0 && cap_delta < 0)

	if (nrg_delta > 0 && cap_delta < 0) {

		trace_sched_tune_filter(nrg_delta, cap_delta, 0, 0, -1, 5);

		return -INT_MAX;

	}



	return __schedtune_accept_deltas(nrg_delta, cap_delta,

			perf_boost_idx, perf_constrain_idx);