Commit cb5d7699 authored Feb 09, 2012 by Stephane Eranian Committed by Ingo Molnar Mar 09, 2012

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>

parent b50311dc

include/linux/perf_event.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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: