[PATCH 2/3] perf trace: Add fallback definition of EFD_SEMAPHORE

Ben Hutchings
2014-02-06T01:00:44Z

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glibc 2.17 is missing this on sparc, despite the fact that it's
not architecture-specific.

Fixes: 49af9e93adfa ('perf trace: Beautify eventfd2 'flags' arg')
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: <stable@vger.kernel.org>
---
tools/perf/builtin-trace.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c9671bd..5c32dcf 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -35,6 +35,10 @@
# define MADV_UNMERGEABLE 13
#endif

+#ifndef EFD_SEMAPHORE
+# define EFD_SEMAPHORE 1
+#endif
+
struct tp_field {
int offset;
union {

--
Ben Hutchings
It is a miracle that curiosity survives formal education. - Albert Einstein