perf tools: Use sysctl__read_int instead of ad-hoc copies

Cc: Adrian Hunter <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 1 insertions, 8 deletions

diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 41125e5b011e..b86744f29eef 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -506,16 +506,9 @@ const char *get_filename_for_perf_kvm(void)
 
 int perf_event_paranoid(void)
 {
-	char path[PATH_MAX];
-	const char *procfs = procfs__mountpoint();
 	int value;
 
-	if (!procfs)
-		return INT_MAX;
-
-	scnprintf(path, PATH_MAX, "%s/sys/kernel/perf_event_paranoid", procfs);
-
-	if (filename__read_int(path, &value))
+	if (sysctl__read_int("kernel/perf_event_paranoid", &value))
 		return INT_MAX;
 
 	return value;