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Commit 2cf86dc5 authored by Saravana Kannan's avatar Saravana Kannan
Browse files

cpufreq: schedutil: Add trace point for get_next_freq 



This will help catch any issues between utilization update from scheduler
to the actual frequency calculation.

Change-Id: I17f23fd126e2d69488b2ba0a526296872090ac96
Signed-off-by: default avatarSaravana Kannan <skannan@codeaurora.org>
parent cc8c86a2

include/trace/events/power.h

+23 −0
Original line number Diff line number Diff line
@@ -801,6 +801,29 @@ TRACE_EVENT(sugov_util_update, 
		      __entry->pl, __entry->flags)

);



TRACE_EVENT(sugov_next_freq,

	    TP_PROTO(unsigned int cpu, unsigned long util, unsigned long max,

		     unsigned int freq),

	    TP_ARGS(cpu, util, max, freq),

	    TP_STRUCT__entry(

		    __field(	unsigned int,	cpu)

		    __field(	unsigned long,	util)

		    __field(	unsigned long,	max)

		    __field(	unsigned int,	freq)

	    ),

	    TP_fast_assign(

		    __entry->cpu = cpu;

		    __entry->util = util;

		    __entry->max = max;

		    __entry->freq = freq;

	    ),

	    TP_printk("cpu=%u util=%lu max=%lu freq=%u",

		      __entry->cpu,

		      __entry->util,

		      __entry->max,

		      __entry->freq)

);



DECLARE_EVENT_CLASS(kpm_module,



	TP_PROTO(unsigned int managed_cpus, unsigned int max_cpus),

kernel/sched/cpufreq_schedutil.c

+1 −0
Original line number Diff line number Diff line
@@ -163,6 +163,7 @@ static unsigned int get_next_freq(struct sugov_policy *sg_policy, 
				policy->cpuinfo.max_freq : policy->cur;



	freq = (freq + (freq >> 2)) * util / max;

	trace_sugov_next_freq(policy->cpu, util, max, freq);



	if (freq == sg_policy->cached_raw_freq && sg_policy->next_freq != UINT_MAX)

		return sg_policy->next_freq;