| 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 |
| |
