diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2020-10-26 04:01:20 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2020-10-26 04:01:20 +0000 |
| commit | 4ce9e8dacf8b10b5355981add9170127bf5980b7 (patch) | |
| tree | 9b4fd620e15e1944d18b21e5d55569433422cdd4 /sys | |
| parent | 0fd098d9242fe772b41459e34be22f3b81997679 (diff) | |
use __membar() where possible
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/pci/drm/include/linux/atomic.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/sys/dev/pci/drm/include/linux/atomic.h b/sys/dev/pci/drm/include/linux/atomic.h index 501ef8fd972..d2a47dd7229 100644 --- a/sys/dev/pci/drm/include/linux/atomic.h +++ b/sys/dev/pci/drm/include/linux/atomic.h @@ -1,4 +1,4 @@ -/* $OpenBSD: atomic.h,v 1.11 2020/10/26 03:00:15 jsg Exp $ */ +/* $OpenBSD: atomic.h,v 1.12 2020/10/26 04:01:19 jsg Exp $ */ /** * \file drm_atomic.h * Atomic operations used in the DRM which may or may not be provided by the OS. @@ -388,8 +388,8 @@ find_next_bit(volatile void *p, int max, int b) #define wmb() __asm __volatile("lock; addl $0,-4(%%esp)" : : : "memory", "cc") #define mb() __asm __volatile("lock; addl $0,-4(%%esp)" : : : "memory", "cc") #define smp_mb() __asm __volatile("lock; addl $0,-4(%%esp)" : : : "memory", "cc") -#define smp_rmb() __asm __volatile("" : : : "memory") -#define smp_wmb() __asm __volatile("" : : : "memory") +#define smp_rmb() __membar("") +#define smp_wmb() __membar("") #define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) #define smp_mb__after_atomic() do { } while (0) #define smp_mb__before_atomic() do { } while (0) @@ -398,12 +398,12 @@ find_next_bit(volatile void *p, int max, int b) #define wmb() alpha_wmb(); #define mb() alpha_mb(); #elif defined(__amd64__) -#define rmb() __asm __volatile("lfence" : : : "memory") -#define wmb() __asm __volatile("sfence" : : : "memory") -#define mb() __asm __volatile("mfence" : : : "memory") -#define smp_mb() __asm __volatile("lock; addl $0,-4(%%rsp)" : : : "memory", "cc"); -#define smp_rmb() __asm __volatile("" : : : "memory") -#define smp_wmb() __asm __volatile("" : : : "memory") +#define rmb() __membar("lfence") +#define wmb() __membar("sfence") +#define mb() __membar("mfence") +#define smp_mb() __asm __volatile("lock; addl $0,-4(%%rsp)" : : : "memory", "cc") +#define smp_rmb() __membar("") +#define smp_wmb() __membar("") #define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) #define smp_mb__after_atomic() do { } while (0) #define smp_mb__before_atomic() do { } while (0) |