Commit-ID: a5b0153c880c2775bf5bdd78306f0a47e860ea04
Gitweb: http://git.kernel.org/tip/a5b0153c880c2775bf5bdd78306f0a47e860ea04
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Tue, 12 Aug 2014 18:04:28 +0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 13 Aug 2014 15:58:08 -0300
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: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1407855871-15024-2-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/cloexec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c
index 5073c01..000047c 100644
--- a/tools/perf/util/cloexec.c
+++ b/tools/perf/util/cloexec.c
@@ -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;
--
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