diff options
| author | Julia Suvorova <jusual@redhat.com> | 2019-08-20 14:42:36 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-08-20 07:46:29 -0600 |
| commit | 6e9dd0c8c50b5988a0c77532c9c2bd6afd4790d2 (patch) | |
| tree | 08bf7a0497d935ff1a58f93f1037a45437683231 /src/include | |
| parent | 552c6a08d04c74d20eeaa86f535bfd553b352370 (diff) | |
liburing/barrier.h: Add prefix to arm barriers
Rename the newly added arm barriers and READ/WRITE_ONCE
to avoid using popular names.
Signed-off-by: Julia Suvorova <jusual@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/liburing/barrier.h | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/src/include/liburing/barrier.h b/src/include/liburing/barrier.h index 8efa6dd..fc40a8a 100644 --- a/src/include/liburing/barrier.h +++ b/src/include/liburing/barrier.h @@ -26,9 +26,9 @@ after the acquire operation executes. This is implemented using #define io_uring_barrier() __asm__ __volatile__("": : :"memory") /* From tools/virtio/linux/compiler.h */ -#define WRITE_ONCE(var, val) \ +#define IO_URING_WRITE_ONCE(var, val) \ (*((volatile __typeof(val) *)(&(var))) = (val)) -#define READ_ONCE(var) (*((volatile __typeof(var) *)(&(var)))) +#define IO_URING_READ_ONCE(var) (*((volatile __typeof(var) *)(&(var)))) #if defined(__x86_64__) || defined(__i386__) @@ -49,27 +49,27 @@ after the acquire operation executes. This is implemented using #define io_uring_smp_store_release(p, v) \ do { \ io_uring_barrier(); \ - WRITE_ONCE(*(p), (v)); \ + IO_URING_WRITE_ONCE(*(p), (v)); \ } while (0) -#define io_uring_smp_load_acquire(p) \ -({ \ - __typeof(*p) ___p1 = READ_ONCE(*(p)); \ - io_uring_barrier(); \ - ___p1; \ +#define io_uring_smp_load_acquire(p) \ +({ \ + __typeof(*p) ___p1 = IO_URING_READ_ONCE(*(p)); \ + io_uring_barrier(); \ + ___p1; \ }) #elif defined(__aarch64__) /* Adapted from arch/arm64/include/asm/barrier.h */ -#define dmb(opt) asm volatile("dmb " #opt : : : "memory") -#define dsb(opt) asm volatile("dsb " #opt : : : "memory") +#define io_uring_dmb(opt) asm volatile("dmb " #opt : : : "memory") +#define io_uring_dsb(opt) asm volatile("dsb " #opt : : : "memory") -#define mb() dsb(sy) -#define rmb() dsb(ld) -#define wmb() dsb(st) -#define smp_mb() dmb(ish) -#define smp_rmb() dmb(ishld) -#define smp_wmb() dmb(ishst) +#define io_uring_mb() io_uring_dsb(sy) +#define io_uring_rmb() io_uring_dsb(ld) +#define io_uring_wmb() io_uring_dsb(st) +#define io_uring_smp_mb() io_uring_dmb(ish) +#define io_uring_smp_rmb() io_uring_dmb(ishld) +#define io_uring_smp_wmb() io_uring_dmb(ishst) #else /* defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) */ /* @@ -83,19 +83,19 @@ do { \ /* From tools/include/asm/barrier.h */ #ifndef io_uring_smp_store_release -# define io_uring_smp_store_release(p, v) \ +#define io_uring_smp_store_release(p, v) \ do { \ io_uring_smp_mb(); \ - WRITE_ONCE(*p, v); \ + IO_URING_WRITE_ONCE(*p, v); \ } while (0) #endif #ifndef io_uring_smp_load_acquire -# define io_uring_smp_load_acquire(p) \ -({ \ - __typeof(*p) ___p1 = READ_ONCE(*p); \ - io_uring_smp_mb(); \ - ___p1; \ +#define io_uring_smp_load_acquire(p) \ +({ \ + __typeof(*p) ___p1 = IO_URING_READ_ONCE(*p); \ + io_uring_smp_mb(); \ + ___p1; \ }) #endif |