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Commit 4dca8707 authored by Juri Lelli's avatar Juri Lelli Committed by Todd Kjos
Browse files

DEBUG: sched: add tracepoint for cpu/freq scale invariance 



Change-Id: Ia3138469039c74bbb34486135da9f1ec033842c2
Signed-off-by: default avatarJuri Lelli <juri.lelli@arm.com>
parent 94b81d03

include/trace/events/sched.h

+24 −0
Original line number Diff line number Diff line
@@ -599,6 +599,30 @@ TRACE_EVENT(sched_wake_idle_without_ipi, 


	TP_printk("cpu=%d", __entry->cpu)

);



TRACE_EVENT(sched_contrib_scale_f,



	TP_PROTO(int cpu, unsigned long freq_scale_factor,

		 unsigned long cpu_scale_factor),



	TP_ARGS(cpu, freq_scale_factor, cpu_scale_factor),



	TP_STRUCT__entry(

		__field(int, cpu)

		__field(unsigned long, freq_scale_factor)

		__field(unsigned long, cpu_scale_factor)

	),



	TP_fast_assign(

		__entry->cpu = cpu;

		__entry->freq_scale_factor = freq_scale_factor;

		__entry->cpu_scale_factor = cpu_scale_factor;

	),



	TP_printk("cpu=%d freq_scale_factor=%lu cpu_scale_factor=%lu",

		  __entry->cpu, __entry->freq_scale_factor,

		  __entry->cpu_scale_factor)

);

#endif /* _TRACE_SCHED_H */



/* This part must be outside protection */

kernel/sched/fair.c

+1 −0
Original line number Diff line number Diff line
@@ -2349,6 +2349,7 @@ __update_load_avg(u64 now, int cpu, struct sched_avg *sa, 


	scale_freq = arch_scale_freq_capacity(NULL, cpu);

	scale_cpu = arch_scale_cpu_capacity(NULL, cpu);

	trace_sched_contrib_scale_f(cpu, scale_freq, scale_cpu);



	/* delta_w is the amount already accumulated against our next period */

	delta_w = sa->period_contrib;