diff options
| author |   jsg <jsg@openbsd.org> | 2020-06-17 01:03:57 +0000 |
|---|---|---|
| committer | jsg <jsg@openbsd.org> | 2020-06-17 01:03:57 +0000 |
| commit | b40fc73fbdba799cae45a0550f11b49fedd1b21b (patch) | |
| tree | 827c6075d67da77729208a33750f9406abadc42d | |
| parent | manpage for the bits of intrmap we're using at the moment. (diff) | |
| download | wireguard-openbsd-b40fc73fbdba799cae45a0550f11b49fedd1b21b.tar.xz wireguard-openbsd-b40fc73fbdba799cae45a0550f11b49fedd1b21b.zip | |
use WRITE_ONCE and READ_ONCE for set and read
ok kettenis@
| -rw-r--r-- | sys/dev/pci/drm/include/linux/atomic.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/sys/dev/pci/drm/include/linux/atomic.h b/sys/dev/pci/drm/include/linux/atomic.h index ebcbd9dff6a..bd57a798868 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 1.9 2020/06/16 15:10:03 jsg Exp $ */ +/* $OpenBSD: atomic.h,v 1.10 2020/06/17 01:03:57 jsg Exp $ */ /** * \file drm_atomic.h * Atomic operations used in the DRM which may or may not be provided by the OS. @@ -41,8 +41,8 @@ #define ATOMIC_INIT(x) (x) -#define atomic_set(p, v) (*(p) = (v)) -#define atomic_read(p) (*(p)) +#define atomic_set(p, v) WRITE_ONCE(*(p), (v)) +#define atomic_read(p) READ_ONCE(*(p)) #define atomic_inc(p) __sync_fetch_and_add(p, 1) #define atomic_dec(p) __sync_fetch_and_sub(p, 1) #define atomic_add(n, p) __sync_fetch_and_add(p, n) @@ -118,15 +118,15 @@ atomic_dec_if_positive(volatile int *v) return r; } -#define atomic_long_read(p) (*(p)) +#define atomic_long_read(p) READ_ONCE(*(p)) #ifdef __LP64__ typedef int64_t atomic64_t; #define ATOMIC64_INIT(x) (x) -#define atomic64_set(p, v) (*(p) = (v)) -#define atomic64_read(p) (*(p)) +#define atomic64_set(p, v) WRITE_ONCE(*(p), (v)) +#define atomic64_read(p) READ_ONCE(*(p)) static inline int64_t atomic64_xchg(volatile int64_t *v, int64_t n) |