| Date | Mon, 4 May 2015 22:09:48 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH V4 06/24] perf tools: Add support for PERF_RECORD_AUX |
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On Thu, Apr 30, 2015 at 05:37:29PM +0300, Adrian Hunter wrote: > Add support for the PERF_RECORD_AUX event type. > > PERF_RECORD_AUX is a new kernel event that records > when new data lands in the AUX buffer. Currently > it is assumed that AUX data follows the same ring > buffer conventions used by the perf events buffer, > and consequently the AUX event is not processed > during recording. > > It is processed during session processing so that > the information in the 'flags' member is made > available. > > The format of PERF_RECORD_AUX is outlined in the > linux/perf_events.h header file. The 'flags' are > also enumerated. > > Intel PT and Intel BTS use the flag named > PERF_AUX_FLAG_TRUNCATED to determine if data has > been lost because the buffer became full as > perf was not able to empty it fast enough. > > Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
thanks, jirka
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