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Commit 0306e481 authored by Shilpasri G Bhat's avatar Shilpasri G Bhat Committed by Rafael J. Wysocki
Browse files

cpufreq: powernv/tracing: Add powernv_throttle tracepoint 



This patch adds the powernv_throttle tracepoint to trace the CPU
frequency throttling event, which is used by the powernv-cpufreq
driver in POWER8.

Signed-off-by: default avatarShilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Reviewed-by: default avatarGautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 96c4726f

include/trace/events/power.h

+22 −0
Original line number Diff line number Diff line
@@ -38,6 +38,28 @@ DEFINE_EVENT(cpu, cpu_idle, 
	TP_ARGS(state, cpu_id)

);



TRACE_EVENT(powernv_throttle,



	TP_PROTO(int chip_id, const char *reason, int pmax),



	TP_ARGS(chip_id, reason, pmax),



	TP_STRUCT__entry(

		__field(int, chip_id)

		__string(reason, reason)

		__field(int, pmax)

	),



	TP_fast_assign(

		__entry->chip_id = chip_id;

		__assign_str(reason, reason);

		__entry->pmax = pmax;

	),



	TP_printk("Chip %d Pmax %d %s", __entry->chip_id,

		  __entry->pmax, __get_str(reason))

);



TRACE_EVENT(pstate_sample,



	TP_PROTO(u32 core_busy,

kernel/trace/power-traces.c

+1 −0
Original line number Diff line number Diff line
@@ -15,4 +15,5 @@ 


EXPORT_TRACEPOINT_SYMBOL_GPL(suspend_resume);

EXPORT_TRACEPOINT_SYMBOL_GPL(cpu_idle);

EXPORT_TRACEPOINT_SYMBOL_GPL(powernv_throttle);