[PATCH 1/4] perf tools: Fix CLOEXEC probe for perf_event_paranoid == 2

[Adrian Hunter]

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>
---
 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;
-- 
1.8.3.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/