[tip:perf/hw-branch-sampling] perf: Add ABI reference sizes

[tip-bot for Stephane Eranian]

Commit-ID:  cb5d76999029ae7a517cb07dfa732c1b5a934fc2
Gitweb:     http://git.kernel.org/tip/cb5d76999029ae7a517cb07dfa732c1b5a934fc2
Author:     Stephane Eranian <eranian@xxxxxxxxxx>
AuthorDate: Thu, 9 Feb 2012 23:21:05 +0100
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Fri, 9 Mar 2012 08:26:05 +0100

perf: Add ABI reference sizes

This patch adds reference sizes for revision 1
and 2 of the perf_event ABI, i.e., the size of
the perf_event_attr struct.

With Rev1: config2 was added = +8 bytes
With Rev2: branch_sample_type was added = +8 bytes

Adds the definition for Rev1, Rev2.

This is useful for tools trying to decode the revision
numbers based on the size of the struct.

Signed-off-by: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: peterz@xxxxxxxxxxxxx
Cc: acme@xxxxxxxxxx
Cc: robert.richter@xxxxxxx
Cc: ming.m.lin@xxxxxxxxx
Cc: andi@xxxxxxxxxxxxxx
Cc: asharma@xxxxxx
Cc: ravitillo@xxxxxxx
Cc: vweaver1@xxxxxxxxxxxx
Cc: khandual@xxxxxxxxxxxxxxxxxx
Cc: dsahern@xxxxxxxxx
Link: http://lkml.kernel.org/r/1328826068-11713-16-git-send-email-eranian@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
 include/linux/perf_event.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index fbbf5e5..bd9f55a 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -192,6 +192,8 @@ enum perf_event_read_format {
 };
 
 #define PERF_ATTR_SIZE_VER0	64	/* sizeof first published struct */
+#define PERF_ATTR_SIZE_VER1	72	/* add: config2 */
+#define PERF_ATTR_SIZE_VER2	80	/* add: branch_sample_type */
 
 /*
  * Hardware event_id to monitor via a performance monitoring event:
--
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