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perf/UAPI: Clearly mark __PERF_SAMPLE_CALLCHAIN_EARLY as internal use

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Vince noted that commit:

  6cbc304f2f36 ("perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)")

'leaked' __PERF_SAMPLE_CALLCHAIN_EARLY into the UAPI namespace. And
while sys_perf_event_open() will error out if you try to use it, it is
exposed.

Clearly mark it for internal use only to avoid any confusion.

Requested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2018-08-29 14:13:13 +02:00 committed by Ingo Molnar
parent 16160c1946
commit 09121255c7
1 changed files with 1 additions and 1 deletions
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2
include/uapi/linux/perf_event.h
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@ -144,7 +144,7 @@ enum perf_event_sample_format {
PERF_SAMPLE_MAX = 1U << 20, /* non-ABI */
__PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63,
__PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63, /* non-ABI; internal use */
};
/*