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perf tools: Add some comments to the event definitions 

Just to make it clear that these are _not_ generic event
structures but do rely on the counter configuration.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey J Ashford <cjashfor@us.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
LKML-Reference: <20090813103655.334194326@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-08-13 11:47:55 +02:00 committed by Ingo Molnar
parent 66e274f3b8
commit 18408ddc01
1 changed files with 6 additions and 0 deletions
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6
tools/perf/util/event.h
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@ -4,6 +4,9 @@
#include "util.h"
#include <linux/list.h>
/*
* PERF_SAMPLE_IP | PERF_SAMPLE_TID | *
*/
struct ip_event {
struct perf_event_header header;
u64 ip;
@ -38,6 +41,9 @@ struct lost_event {
u64 lost;
};
/*
* PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID
*/
struct read_event {
struct perf_event_header header;
u32 pid,tid;