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Commit a5b0153c authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Fix CLOEXEC probe for perf_event_paranoid == 2 



With /proc/sys/kernel/perf_event_paranoid set to 2, the probe of
PERF_FLAG_FD_CLOEXEC would fail.  Fix by excluding kernel profiling from
the probe event.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1407855871-15024-2-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 86998dda

tools/perf/util/cloexec.c

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ static int perf_flag_probe(void) 
	struct perf_event_attr attr = {

		.type = PERF_TYPE_SOFTWARE,

		.config = PERF_COUNT_SW_CPU_CLOCK,

		.exclude_kernel = 1,

	};

	int fd;

	int err;