diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index eed3fb2a3af0..2282d41879a2 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -18,7 +18,7 @@
 #include <pthread.h>
 
 const char perf_usage_string[] =
-	"perf [--version] [--debug variable[=VALUE]] [--help] COMMAND [ARGS]";
+	"perf [--version] [--help] [OPTIONS] COMMAND [ARGS]";
 
 const char perf_more_info_string[] =
 	"See 'perf help COMMAND' for more information on a specific command.";
diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c
index 6a37be53a5d2..c5d05ec17220 100644
--- a/tools/perf/util/cloexec.c
+++ b/tools/perf/util/cloexec.c
@@ -1,4 +1,3 @@
-#include <sched.h>
 #include "util.h"
 #include "../perf.h"
 #include "cloexec.h"
@@ -15,13 +14,9 @@ static int perf_flag_probe(void)
 	};
 	int fd;
 	int err;
-	int cpu = sched_getcpu();
-
-	if (cpu < 0)
-		cpu = 0;
 
 	/* check cloexec flag */
-	fd = sys_perf_event_open(&attr, -1, cpu, -1,
+	fd = sys_perf_event_open(&attr, 0, -1, -1,
 				 PERF_FLAG_FD_CLOEXEC);
 	err = errno;
 
@@ -35,7 +30,7 @@ static int perf_flag_probe(void)
 		  err, strerror(err));
 
 	/* not supported, confirm error related to PERF_FLAG_FD_CLOEXEC */
-	fd = sys_perf_event_open(&attr, -1, cpu, -1, 0);
+	fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
 	err = errno;
 
 	if (WARN_ONCE(fd < 0,