perf/x86/intel/pt: Document pt_buffer_reset_markers()
authorAlexander Shishkin <alexander.shishkin@linux.intel.com>
Tue, 21 Apr 2015 13:16:15 +0000 (16:16 +0300)
committerIngo Molnar <mingo@kernel.org>
Wed, 27 May 2015 07:17:47 +0000 (09:17 +0200)
commitcf302bfdf3039853fce812ae1ffd0ac24f5b468f
tree21ce8a5c248d7a2331260c9ead7ec7a63520ead8
parent74387bcb711b7b2ed65c0ed08953e13d4e31969e
perf/x86/intel/pt: Document pt_buffer_reset_markers()

The comments in the driver don't make it absolutely clear as to what
exactly is the calling order and other possible constraints of buffer
management functions.

Document constraints and calling order for the buffer configuration
functions. While at it, replace a redundant check in
pt_buffer_reset_markers() with an explanation why it is not needed.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@infradead.org
Cc: adrian.hunter@intel.com
Cc: hpa@zytor.com
Link: http://lkml.kernel.org/r/1429622177-22843-4-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/cpu/perf_event_intel_pt.c