[PATCH] perf test: check if cpu_map__new() return NULL

[Han Pingtian]

It looks like we should check if cpus is NULL after

	cpus = cpu_map__new(NULL);

in test__open_syscall_event_on_all_cpus().

Signed-off-by: Han Pingtian <phan@xxxxxxxxxx>
---
 tools/perf/builtin-test.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 419ce20..e7f098b 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -348,8 +348,8 @@ static int test__open_syscall_event_on_all_cpus(void)
 	}
 
 	cpus = cpu_map__new(NULL);
-	if (threads == NULL) {
-		pr_debug("thread_map__new\n");
+	if (cpus == NULL) {
+		pr_debug("cpu_map__new\n");
 		return -1;
 	}
 
-- 
1.7.3.4
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