From: Ben Hutchings <ben@decadent.org.uk>
Date: Thu, 6 Feb 2014 01:00:35 +0000 (+0000)
Subject: perf trace: Add fallback definition of EFD_SEMAPHORE
X-Git-Tag: v3.13.6~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af20781fceacf729078619c99381e5fa4f98d2d1;p=thirdparty%2Fkernel%2Fstable.git

perf trace: Add fallback definition of EFD_SEMAPHORE

commit 79d26a6a19ace19faabf8d8d27d3430be2e26d34 upstream.

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

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: 49af9e93adfa ('perf trace: Beautify eventfd2 'flags' arg')
Cc: <stable@vger.kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1391648435.3003.100.camel@deadeye.wl.decadent.org.uk
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 8f3d09fb3d2e0..aaeee081a70dc 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 {