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Commit 972c1488 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
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perf: Update PERF_RECORD_MISC_* comment for perf_event_header::misc bit 13 



The perf_event_header::misc bit 13 is shared on different events and
next patch is adding yet another bit 13 user.  Updating the comment to
make it more structured and clear which events use bit 13.

Suggested-by: default avatarPeter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-8-jolsa@kernel.org


[ Update the tools/include/uapi/linux copy ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 99e818cc

include/uapi/linux/perf_event.h

+6 −3
Original line number Diff line number Diff line
@@ -612,9 +612,12 @@ struct perf_event_mmap_page { 
 */

#define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT	(1 << 12)

/*

 * PERF_RECORD_MISC_MMAP_DATA and PERF_RECORD_MISC_COMM_EXEC are used on

 * different events so can reuse the same bit position.

 * Ditto PERF_RECORD_MISC_SWITCH_OUT.

 * Following PERF_RECORD_MISC_* are used on different

 * events, so can reuse the same bit position:

 *

 *   PERF_RECORD_MISC_MMAP_DATA  - PERF_RECORD_MMAP* events

 *   PERF_RECORD_MISC_COMM_EXEC  - PERF_RECORD_COMM event

 *   PERF_RECORD_MISC_SWITCH_OUT - PERF_RECORD_SWITCH* events

 */

#define PERF_RECORD_MISC_MMAP_DATA		(1 << 13)

#define PERF_RECORD_MISC_COMM_EXEC		(1 << 13)

tools/include/uapi/linux/perf_event.h

+6 −3
Original line number Diff line number Diff line
@@ -612,9 +612,12 @@ struct perf_event_mmap_page { 
 */

#define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT	(1 << 12)

/*

 * PERF_RECORD_MISC_MMAP_DATA and PERF_RECORD_MISC_COMM_EXEC are used on

 * different events so can reuse the same bit position.

 * Ditto PERF_RECORD_MISC_SWITCH_OUT.

 * Following PERF_RECORD_MISC_* are used on different

 * events, so can reuse the same bit position:

 *

 *   PERF_RECORD_MISC_MMAP_DATA  - PERF_RECORD_MMAP* events

 *   PERF_RECORD_MISC_COMM_EXEC  - PERF_RECORD_COMM event

 *   PERF_RECORD_MISC_SWITCH_OUT - PERF_RECORD_SWITCH* events

 */

#define PERF_RECORD_MISC_MMAP_DATA		(1 << 13)

#define PERF_RECORD_MISC_COMM_EXEC		(1 << 13)