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-rw-r--r--tools/perf/util/sort.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 23d0ab7c801c..035355a9945e 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -22,6 +22,7 @@
#include "annotate.h"
#include "time-utils.h"
#include <linux/kernel.h>
+#include <linux/string.h>
regex_t parent_regex;
const char default_parent_pattern[] = "^sys_|^do_page_fault";