diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2020-10-26 03:00:16 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2020-10-26 03:00:16 +0000 |
| commit | 0fd098d9242fe772b41459e34be22f3b81997679 (patch) | |
| tree | 60cddc39e22c92ea102af65667dafd2f632f7d51 /sys/dev | |
| parent | ed98dd202a6c85ca92f94d5fc11c5eac1ff6506f (diff) | |
use lwsync and eieio for smp barriers on powerpc
ok kettenis@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/drm/include/linux/atomic.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sys/dev/pci/drm/include/linux/atomic.h b/sys/dev/pci/drm/include/linux/atomic.h index bd57a798868..501ef8fd972 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 1.10 2020/06/17 01:03:57 jsg Exp $ */ +/* $OpenBSD: atomic.h,v 1.11 2020/10/26 03:00:15 jsg Exp $ */ /** * \file drm_atomic.h * Atomic operations used in the DRM which may or may not be provided by the OS. @@ -415,10 +415,17 @@ find_next_bit(volatile void *p, int max, int b) #define rmb() mips_sync() #define wmb() mips_sync() #define mb() mips_sync() +#elif defined(__powerpc64__) +#define rmb() __membar("sync") +#define wmb() __membar("sync") +#define mb() __membar("sync") +#define smp_rmb() __membar("lwsync") +#define smp_wmb() __membar("lwsync") #elif defined(__powerpc__) -#define rmb() __asm __volatile("sync" : : : "memory"); -#define wmb() __asm __volatile("sync" : : : "memory"); -#define mb() __asm __volatile("sync" : : : "memory"); +#define rmb() __membar("sync") +#define wmb() __membar("sync") +#define mb() __membar("sync") +#define smp_wmb() __membar("eieio") #elif defined(__sparc64__) #define rmb() membar_sync() #define wmb() membar_sync() |