From ae0c2d995d648d5165545d5e05e2869642009b38 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Mon, 20 Feb 2017 15:33:51 +0200 Subject: 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 Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Mathieu Poirier Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: vince@deater.net Link: http://lkml.kernel.org/r/20170220133352.17995-4-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar --- include/uapi/linux/perf_event.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux') 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) -- cgit v1.2.3