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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2016-03-04 15:42:47 +0200
committerMathieu Poirier <mathieu.poirier@linaro.org>2016-06-01 15:42:47 -0600
commit84b84017f4369341bdf54054f86947043fa534ef (patch)
tree1c544f9bc3ce8f837561f88661a6436357351fbe /usr
parentc5611c7b5fc21996fc8d81e0d6cbcd75ced77bbb (diff)
perf/ring_buffer: Document AUX API usage
In order to ensure safe AUX buffer management, we rely on the assumption that pmu::stop() stops its ongoing AUX transaction and not just the hw. This patch documents this requirement for the perf_aux_output_{begin,end}() APIs. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/1457098969-21595-4-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> (cherry picked from commit af5bb4ed1254a378b6028c09e58bdcc1cd9bf5b3)
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