1 files changed, 3 insertions, 0 deletions

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 32bd102c32b6..cf20187eee0a 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -125,6 +125,9 @@
 #ifndef NSEC_PER_SEC
 # define NSEC_PER_SEC                   1000000000ULL
 #endif
+#ifndef NSEC_PER_USEC
+# define NSEC_PER_USEC                  1000ULL
+#endif
 
 static inline unsigned long long rdclock(void)
 {