Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a85f61ab authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

perf_counter: add PERF_RECORD_CONFIG 



Much like CONFIG_RECORD_GROUP records the hw_event.config to
identify the values, allow to record this for all counters.

[ Impact: extend perfcounter output record format ]

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090508170028.923228280@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 3df5edad

include/linux/perf_counter.h

+2 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ enum perf_counter_record_format { 
	PERF_RECORD_ADDR	= 1U << 3,

	PERF_RECORD_GROUP	= 1U << 4,

	PERF_RECORD_CALLCHAIN	= 1U << 5,

	PERF_RECORD_CONFIG	= 1U << 6,

};



/*
@@ -258,6 +259,7 @@ enum perf_event_type { 
	 * 	{ u32			pid, tid; } && PERF_RECORD_TID

	 * 	{ u64			time;     } && PERF_RECORD_TIME

	 * 	{ u64			addr;     } && PERF_RECORD_ADDR

	 * 	{ u64			config;   } && PERF_RECORD_CONFIG

	 *

	 * 	{ u64			nr;

	 * 	  { u64 event, val; } 	cnt[nr];  } && PERF_RECORD_GROUP

kernel/perf_counter.c

+8 −0
Original line number Diff line number Diff line
@@ -1994,6 +1994,11 @@ static void perf_counter_output(struct perf_counter *counter, 
		header.size += sizeof(u64);

	}



	if (record_type & PERF_RECORD_CONFIG) {

		header.type |= PERF_RECORD_CONFIG;

		header.size += sizeof(u64);

	}



	if (record_type & PERF_RECORD_GROUP) {

		header.type |= PERF_RECORD_GROUP;

		header.size += sizeof(u64) +
@@ -2029,6 +2034,9 @@ static void perf_counter_output(struct perf_counter *counter, 
	if (record_type & PERF_RECORD_ADDR)

		perf_output_put(&handle, addr);



	if (record_type & PERF_RECORD_CONFIG)

		perf_output_put(&handle, counter->hw_event.config);



	/*

	 * XXX PERF_RECORD_GROUP vs inherited counters seems difficult.

	 */