Commit ca559503 authored by Kan Liang's avatar Kan Liang Committed by Ingo Molnar
Browse files

perf/core: Add the is_event_in_freq_mode() helper to simplify the code 



Add a helper to check if an event is in freq mode to improve readability.

No functional changes.

Signed-off-by: default avatarKan Liang <kan.liang@linux.intel.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250516182853.2610284-2-kan.liang@linux.intel.com
parent 75a9001b

kernel/events/core.c

+10 −5
Original line number Diff line number Diff line
@@ -2351,6 +2351,11 @@ event_filter_match(struct perf_event *event) 
	       perf_cgroup_match(event);

}



static inline bool is_event_in_freq_mode(struct perf_event *event)

{

	return event->attr.freq && event->attr.sample_freq;

}



static void

event_sched_out(struct perf_event *event, struct perf_event_context *ctx)

{
@@ -2388,7 +2393,7 @@ event_sched_out(struct perf_event *event, struct perf_event_context *ctx) 


	if (!is_software_event(event))

		cpc->active_oncpu--;

	if (event->attr.freq && event->attr.sample_freq) {

	if (is_event_in_freq_mode(event)) {

		ctx->nr_freq--;

		epc->nr_freq--;

	}
@@ -2686,7 +2691,7 @@ event_sched_in(struct perf_event *event, struct perf_event_context *ctx) 


	if (!is_software_event(event))

		cpc->active_oncpu++;

	if (event->attr.freq && event->attr.sample_freq) {

	if (is_event_in_freq_mode(event)) {

		ctx->nr_freq++;

		epc->nr_freq++;

	}
@@ -4252,11 +4257,11 @@ static void perf_adjust_freq_unthr_events(struct list_head *event_list) 
		if (hwc->interrupts == MAX_INTERRUPTS) {

			hwc->interrupts = 0;

			perf_log_throttle(event, 1);

			if (!event->attr.freq || !event->attr.sample_freq)

			if (!is_event_in_freq_mode(event))

				event->pmu->start(event, 0);

		}



		if (!event->attr.freq || !event->attr.sample_freq)

		if (!is_event_in_freq_mode(event))

			continue;



		/*
@@ -12848,7 +12853,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, 


	hwc = &event->hw;

	hwc->sample_period = attr->sample_period;

	if (attr->freq && attr->sample_freq)

	if (is_event_in_freq_mode(event))

		hwc->sample_period = 1;

	hwc->last_period = hwc->sample_period;