perf trace: Add fallback definition of EFD_SEMAPHORE

[~andy/linux] / tools / perf / builtin-trace.c

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 896f27047ed6178fd6aed5566863fb4f4c251e84..619d11c47a91f18c77e4586188ca665fdd38acba 100644 (file)
--- 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 {