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Subject[tip:perf/hw-branch-sampling] perf: Add ABI reference sizes
Commit-ID:  cb5d76999029ae7a517cb07dfa732c1b5a934fc2
Gitweb: http://git.kernel.org/tip/cb5d76999029ae7a517cb07dfa732c1b5a934fc2
Author: Stephane Eranian <eranian@google.com>
AuthorDate: Thu, 9 Feb 2012 23:21:05 +0100
Committer: Ingo Molnar <mingo@elte.hu>
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@google.com>
Cc: peterz@infradead.org
Cc: acme@redhat.com
Cc: robert.richter@amd.com
Cc: ming.m.lin@intel.com
Cc: andi@firstfloor.org
Cc: asharma@fb.com
Cc: ravitillo@lbl.gov
Cc: vweaver1@eecs.utk.edu
Cc: khandual@linux.vnet.ibm.com
Cc: dsahern@gmail.com
Link: http://lkml.kernel.org/r/1328826068-11713-16-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
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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