liburing/barrier.h: Add prefix to arm barriers
Rename the newly added arm barriers and READ/WRITE_ONCE
to avoid using popular names.
@@ -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)); \
+ __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__) */
/*
@@ -86,14 +86,14 @@ do { \
#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); \
+ __typeof(*p) ___p1 = IO_URING_READ_ONCE(*p); \
io_uring_smp_mb(); \
___p1; \
})
