Commit 74704ac6 authored by Jean Pihet's avatar Jean Pihet Committed by Ingo Molnar
Browse files

tracing, perf: Add more power related events 



This patch adds new generic events for dynamic power management
tracing:

 - clock events class: used for clock enable/disable and for
   clock rate change,
 - power_domain events class: used for power domains transitions.

The OMAP architecture will be using the new events for PM debugging,
however the new events are made generic enough to be used by all
platforms.

Signed-off-by: default avatarJean Pihet <j-pihet@ti.com>
Acked-by: default avatarThomas Renninger <trenn@suse.de>
Cc: discuss@lesswatts.org
Cc: linux-pm@lists.linux-foundation.org
Cc: Thomas Renninger <trenn@suse.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
LKML-Reference: <AANLkTinUmbSUUuxUzc8++pcb9gd1CZFdyTQFrveTBXyV@mail.gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 635c17c2

include/trace/events/power.h

+87 −3
Original line number Diff line number Diff line
@@ -11,11 +11,16 @@ 
#define _TRACE_POWER_ENUM_

enum {

	POWER_NONE	= 0,

	POWER_CSTATE = 1,

	POWER_PSTATE = 2,

	POWER_CSTATE	= 1,	/* C-State */

	POWER_PSTATE	= 2,	/* Fequency change or DVFS */

	POWER_SSTATE	= 3,	/* Suspend */

};

#endif



/*

 * The power events are used for cpuidle & suspend (power_start, power_end)

 *  and for cpufreq (power_frequency)

 */

DECLARE_EVENT_CLASS(power,



	TP_PROTO(unsigned int type, unsigned int state, unsigned int cpu_id),
@@ -70,6 +75,85 @@ TRACE_EVENT(power_end, 


);



/*

 * The clock events are used for clock enable/disable and for

 *  clock rate change

 */

DECLARE_EVENT_CLASS(clock,



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



	TP_ARGS(name, state, cpu_id),



	TP_STRUCT__entry(

		__string(       name,           name            )

		__field(        u64,            state           )

		__field(        u64,            cpu_id          )

	),



	TP_fast_assign(

		__assign_str(name, name);

		__entry->state = state;

		__entry->cpu_id = cpu_id;

	),



	TP_printk("%s state=%lu cpu_id=%lu", __get_str(name),

		(unsigned long)__entry->state, (unsigned long)__entry->cpu_id)

);



DEFINE_EVENT(clock, clock_enable,



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



	TP_ARGS(name, state, cpu_id)

);



DEFINE_EVENT(clock, clock_disable,



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



	TP_ARGS(name, state, cpu_id)

);



DEFINE_EVENT(clock, clock_set_rate,



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



	TP_ARGS(name, state, cpu_id)

);



/*

 * The power domain events are used for power domains transitions

 */

DECLARE_EVENT_CLASS(power_domain,



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



	TP_ARGS(name, state, cpu_id),



	TP_STRUCT__entry(

		__string(       name,           name            )

		__field(        u64,            state           )

		__field(        u64,            cpu_id          )

	),



	TP_fast_assign(

		__assign_str(name, name);

		__entry->state = state;

		__entry->cpu_id = cpu_id;

),



	TP_printk("%s state=%lu cpu_id=%lu", __get_str(name),

		(unsigned long)__entry->state, (unsigned long)__entry->cpu_id)

);



DEFINE_EVENT(power_domain, power_domain_target,



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



	TP_ARGS(name, state, cpu_id)

);



#endif /* _TRACE_POWER_H */



/* This part must be outside protection */

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