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perf_counter: output objects

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Provide a {type,size} header for each output entry.

This should provide extensible output, and the ability to mix multiple streams.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Orig-LKML-Reference: <20090325113316.831607932@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2009-03-25 12:30:23 +01:00
committed by Ingo Molnar
parent b9cacc7bf1
commit 5c14819432
2 changed files with 52 additions and 12 deletions
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11
include/linux/perf_counter.h
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@@ -156,6 +156,16 @@ struct perf_counter_mmap_page {
__u32 data_head; /* head in the data section */
};
struct perf_event_header {
__u32 type;
__u32 size;
};
enum perf_event_type {
PERF_EVENT_IP = 0,
PERF_EVENT_GROUP = 1,
};
#ifdef __KERNEL__
/*
* Kernel-internal data types and definitions:
@@ -260,6 +270,7 @@ struct perf_counter {
struct list_head list_entry;
struct list_head event_entry;
struct list_head sibling_list;
int nr_siblings;
struct perf_counter *group_leader;
const struct hw_perf_counter_ops *hw_ops;