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- From 7384f79f69fdb7b691cc5b0c28c301b3fe8b633e Mon Sep 17 00:00:00 2001
- From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- Date: Thu, 26 May 2016 10:46:57 +0200
- Subject: [PATCH] xf86atomic: require CAS support in libatomic_ops
- Since AO_compare_and_swap_full() is used by libdrm, AO_REQUIRE_CAS
- must be defined before including <atomic_ops.h> so that we are sure
- that CAS support will be provided. This is necessary to make sure that
- the AO_compare_and_swap_full() function will be provided on all
- architectures, including the ones that don't have built-in CAS support
- such as SPARCv8.
- Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- ---
- xf86atomic.h | 1 +
- 1 file changed, 1 insertion(+)
- diff --git a/xf86atomic.h b/xf86atomic.h
- index 922b37d..d7017a5 100644
- --- a/xf86atomic.h
- +++ b/xf86atomic.h
- @@ -58,6 +58,7 @@ typedef struct {
- #endif
-
- #if HAVE_LIB_ATOMIC_OPS
- +#define AO_REQUIRE_CAS
- #include <atomic_ops.h>
-
- #define HAS_ATOMIC_OPS 1
- --
- 2.7.4
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