diff options
| author |   Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2017-02-20 15:33:51 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-03-16 09:51:11 +0100 |
| commit | ae0c2d995d648d5165545d5e05e2869642009b38 (patch) | |
| tree | 60c78a267d0d42d35508f639dcd155aed8270a20 /include | |
| parent | perf/core: Keep AUX flags in the output handle (diff) | |
| download | linux-dev-ae0c2d995d648d5165545d5e05e2869642009b38.tar.xz linux-dev-ae0c2d995d648d5165545d5e05e2869642009b38.zip | |
perf/core: Add a flag for partial AUX records
The Intel PT driver needs to be able to communicate partial AUX transactions,
that is, transactions with gaps in data for reasons other than no room
left in the buffer (i.e. truncated transactions). Therefore, this condition
does not imply a wakeup for the consumer.
To this end, add a new "partial" AUX flag.
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/20170220133352.17995-4-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/perf_event.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index bec0aad0e15c..d09a9cd021b1 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -915,6 +915,7 @@ enum perf_callchain_context { */ #define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ #define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ +#define PERF_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */ #define PERF_FLAG_FD_NO_GROUP (1UL << 0) #define PERF_FLAG_FD_OUTPUT (1UL << 1) |