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-rw-r--r--tools/perf/builtin-trace.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 896f27047ed6..619d11c47a91 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -37,6 +37,10 @@
# define MADV_UNMERGEABLE 13
#endif
+#ifndef EFD_SEMAPHORE
+# define EFD_SEMAPHORE 1
+#endif
+
struct tp_field {
int offset;
union {