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-rw-r--r--tools/perf/util/thread_map.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c
index ef86bf517e01..63ead7b06324 100644
--- a/tools/perf/util/thread_map.c
+++ b/tools/perf/util/thread_map.c
@@ -1,4 +1,5 @@
#include <dirent.h>
+#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>