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Commit 6791e36c authored by Arve Hjønnevåg's avatar Arve Hjønnevåg Committed by Rafael J. Wysocki
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PM / Sleep: Add wakeup_source_activate and wakeup_source_deactivate tracepoints 



Add tracepoints to wakeup_source_activate and wakeup_source_deactivate.
Useful for checking that specific wakeup sources overlap as expected.

Signed-off-by: default avatarArve Hjønnevåg <arve@android.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 30e3ce6d

drivers/base/power/wakeup.c

+9 −3
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/suspend.h>

#include <linux/seq_file.h>

#include <linux/debugfs.h>

#include <trace/events/power.h>



#include "power.h"
@@ -374,12 +375,16 @@ EXPORT_SYMBOL_GPL(device_set_wakeup_enable); 
 */

static void wakeup_source_activate(struct wakeup_source *ws)

{

	unsigned int cec;



	ws->active = true;

	ws->active_count++;

	ws->last_time = ktime_get();



	/* Increment the counter of events in progress. */

	atomic_inc(&combined_event_count);

	cec = atomic_inc_return(&combined_event_count);



	trace_wakeup_source_activate(ws->name, cec);

}



/**
@@ -454,7 +459,7 @@ EXPORT_SYMBOL_GPL(pm_stay_awake); 
 */

static void wakeup_source_deactivate(struct wakeup_source *ws)

{

	unsigned int cnt, inpr;

	unsigned int cnt, inpr, cec;

	ktime_t duration;

	ktime_t now;
@@ -489,7 +494,8 @@ static void wakeup_source_deactivate(struct wakeup_source *ws) 
	 * Increment the counter of registered wakeup events and decrement the

	 * couter of wakeup events in progress simultaneously.

	 */

	atomic_add(MAX_IN_PROGRESS, &combined_event_count);

	cec = atomic_add_return(MAX_IN_PROGRESS, &combined_event_count);

	trace_wakeup_source_deactivate(ws->name, cec);



	split_counters(&cnt, &inpr);

	if (!inpr && waitqueue_active(&wakeup_count_wait_queue))

include/trace/events/power.h

+34 −0
Original line number Diff line number Diff line
@@ -65,6 +65,40 @@ TRACE_EVENT(machine_suspend, 
	TP_printk("state=%lu", (unsigned long)__entry->state)

);



DECLARE_EVENT_CLASS(wakeup_source,



	TP_PROTO(const char *name, unsigned int state),



	TP_ARGS(name, state),



	TP_STRUCT__entry(

		__string(       name,           name            )

		__field(        u64,            state           )

	),



	TP_fast_assign(

		__assign_str(name, name);

		__entry->state = state;

	),



	TP_printk("%s state=0x%lx", __get_str(name),

		(unsigned long)__entry->state)

);



DEFINE_EVENT(wakeup_source, wakeup_source_activate,



	TP_PROTO(const char *name, unsigned int state),



	TP_ARGS(name, state)

);



DEFINE_EVENT(wakeup_source, wakeup_source_deactivate,



	TP_PROTO(const char *name, unsigned int state),



	TP_ARGS(name, state)

);



#ifdef CONFIG_EVENT_POWER_TRACING_DEPRECATED



/*