| // SPDX-License-Identifier: GPL-2.0 |
| |
| // Generated by scripts/atomic/gen-atomic-fallback.sh |
| // DO NOT MODIFY THIS FILE DIRECTLY |
| |
| #ifndef _LINUX_ATOMIC_FALLBACK_H |
| #define _LINUX_ATOMIC_FALLBACK_H |
| |
| #include <linux/compiler.h> |
| |
| #if defined(arch_xchg) |
| #define raw_xchg arch_xchg |
| #elif defined(arch_xchg_relaxed) |
| #define raw_xchg(...) \ |
| __atomic_op_fence(arch_xchg, __VA_ARGS__) |
| #else |
| extern void raw_xchg_not_implemented(void); |
| #define raw_xchg(...) raw_xchg_not_implemented() |
| #endif |
| |
| #if defined(arch_xchg_acquire) |
| #define raw_xchg_acquire arch_xchg_acquire |
| #elif defined(arch_xchg_relaxed) |
| #define raw_xchg_acquire(...) \ |
| __atomic_op_acquire(arch_xchg, __VA_ARGS__) |
| #elif defined(arch_xchg) |
| #define raw_xchg_acquire arch_xchg |
| #else |
| extern void raw_xchg_acquire_not_implemented(void); |
| #define raw_xchg_acquire(...) raw_xchg_acquire_not_implemented() |
| #endif |
| |
| #if defined(arch_xchg_release) |
| #define raw_xchg_release arch_xchg_release |
| #elif defined(arch_xchg_relaxed) |
| #define raw_xchg_release(...) \ |
| __atomic_op_release(arch_xchg, __VA_ARGS__) |
| #elif defined(arch_xchg) |
| #define raw_xchg_release arch_xchg |
| #else |
| extern void raw_xchg_release_not_implemented(void); |
| #define raw_xchg_release(...) raw_xchg_release_not_implemented() |
| #endif |
| |
| #if defined(arch_xchg_relaxed) |
| #define raw_xchg_relaxed arch_xchg_relaxed |
| #elif defined(arch_xchg) |
| #define raw_xchg_relaxed arch_xchg |
| #else |
| extern void raw_xchg_relaxed_not_implemented(void); |
| #define raw_xchg_relaxed(...) raw_xchg_relaxed_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg) |
| #define raw_cmpxchg arch_cmpxchg |
| #elif defined(arch_cmpxchg_relaxed) |
| #define raw_cmpxchg(...) \ |
| __atomic_op_fence(arch_cmpxchg, __VA_ARGS__) |
| #else |
| extern void raw_cmpxchg_not_implemented(void); |
| #define raw_cmpxchg(...) raw_cmpxchg_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg_acquire) |
| #define raw_cmpxchg_acquire arch_cmpxchg_acquire |
| #elif defined(arch_cmpxchg_relaxed) |
| #define raw_cmpxchg_acquire(...) \ |
| __atomic_op_acquire(arch_cmpxchg, __VA_ARGS__) |
| #elif defined(arch_cmpxchg) |
| #define raw_cmpxchg_acquire arch_cmpxchg |
| #else |
| extern void raw_cmpxchg_acquire_not_implemented(void); |
| #define raw_cmpxchg_acquire(...) raw_cmpxchg_acquire_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg_release) |
| #define raw_cmpxchg_release arch_cmpxchg_release |
| #elif defined(arch_cmpxchg_relaxed) |
| #define raw_cmpxchg_release(...) \ |
| __atomic_op_release(arch_cmpxchg, __VA_ARGS__) |
| #elif defined(arch_cmpxchg) |
| #define raw_cmpxchg_release arch_cmpxchg |
| #else |
| extern void raw_cmpxchg_release_not_implemented(void); |
| #define raw_cmpxchg_release(...) raw_cmpxchg_release_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg_relaxed) |
| #define raw_cmpxchg_relaxed arch_cmpxchg_relaxed |
| #elif defined(arch_cmpxchg) |
| #define raw_cmpxchg_relaxed arch_cmpxchg |
| #else |
| extern void raw_cmpxchg_relaxed_not_implemented(void); |
| #define raw_cmpxchg_relaxed(...) raw_cmpxchg_relaxed_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg64) |
| #define raw_cmpxchg64 arch_cmpxchg64 |
| #elif defined(arch_cmpxchg64_relaxed) |
| #define raw_cmpxchg64(...) \ |
| __atomic_op_fence(arch_cmpxchg64, __VA_ARGS__) |
| #else |
| extern void raw_cmpxchg64_not_implemented(void); |
| #define raw_cmpxchg64(...) raw_cmpxchg64_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg64_acquire) |
| #define raw_cmpxchg64_acquire arch_cmpxchg64_acquire |
| #elif defined(arch_cmpxchg64_relaxed) |
| #define raw_cmpxchg64_acquire(...) \ |
| __atomic_op_acquire(arch_cmpxchg64, __VA_ARGS__) |
| #elif defined(arch_cmpxchg64) |
| #define raw_cmpxchg64_acquire arch_cmpxchg64 |
| #else |
| extern void raw_cmpxchg64_acquire_not_implemented(void); |
| #define raw_cmpxchg64_acquire(...) raw_cmpxchg64_acquire_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg64_release) |
| #define raw_cmpxchg64_release arch_cmpxchg64_release |
| #elif defined(arch_cmpxchg64_relaxed) |
| #define raw_cmpxchg64_release(...) \ |
| __atomic_op_release(arch_cmpxchg64, __VA_ARGS__) |
| #elif defined(arch_cmpxchg64) |
| #define raw_cmpxchg64_release arch_cmpxchg64 |
| #else |
| extern void raw_cmpxchg64_release_not_implemented(void); |
| #define raw_cmpxchg64_release(...) raw_cmpxchg64_release_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg64_relaxed) |
| #define raw_cmpxchg64_relaxed arch_cmpxchg64_relaxed |
| #elif defined(arch_cmpxchg64) |
| #define raw_cmpxchg64_relaxed arch_cmpxchg64 |
| #else |
| extern void raw_cmpxchg64_relaxed_not_implemented(void); |
| #define raw_cmpxchg64_relaxed(...) raw_cmpxchg64_relaxed_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg128) |
| #define raw_cmpxchg128 arch_cmpxchg128 |
| #elif defined(arch_cmpxchg128_relaxed) |
| #define raw_cmpxchg128(...) \ |
| __atomic_op_fence(arch_cmpxchg128, __VA_ARGS__) |
| #else |
| extern void raw_cmpxchg128_not_implemented(void); |
| #define raw_cmpxchg128(...) raw_cmpxchg128_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg128_acquire) |
| #define raw_cmpxchg128_acquire arch_cmpxchg128_acquire |
| #elif defined(arch_cmpxchg128_relaxed) |
| #define raw_cmpxchg128_acquire(...) \ |
| __atomic_op_acquire(arch_cmpxchg128, __VA_ARGS__) |
| #elif defined(arch_cmpxchg128) |
| #define raw_cmpxchg128_acquire arch_cmpxchg128 |
| #else |
| extern void raw_cmpxchg128_acquire_not_implemented(void); |
| #define raw_cmpxchg128_acquire(...) raw_cmpxchg128_acquire_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg128_release) |
| #define raw_cmpxchg128_release arch_cmpxchg128_release |
| #elif defined(arch_cmpxchg128_relaxed) |
| #define raw_cmpxchg128_release(...) \ |
| __atomic_op_release(arch_cmpxchg128, __VA_ARGS__) |
| #elif defined(arch_cmpxchg128) |
| #define raw_cmpxchg128_release arch_cmpxchg128 |
| #else |
| extern void raw_cmpxchg128_release_not_implemented(void); |
| #define raw_cmpxchg128_release(...) raw_cmpxchg128_release_not_implemented() |
| #endif |
| |
| #if defined(arch_cmpxchg128_relaxed) |
| #define raw_cmpxchg128_relaxed arch_cmpxchg128_relaxed |
| #elif defined(arch_cmpxchg128) |
| #define raw_cmpxchg128_relaxed arch_cmpxchg128 |
| #else |
| extern void raw_cmpxchg128_relaxed_not_implemented(void); |
| #define raw_cmpxchg128_relaxed(...) raw_cmpxchg128_relaxed_not_implemented() |
| #endif |
| |
| #if defined(arch_try_cmpxchg) |
| #define raw_try_cmpxchg arch_try_cmpxchg |
| #elif defined(arch_try_cmpxchg_relaxed) |
| #define raw_try_cmpxchg(...) \ |
| __atomic_op_fence(arch_try_cmpxchg, __VA_ARGS__) |
| #else |
| #define raw_try_cmpxchg(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg_acquire) |
| #define raw_try_cmpxchg_acquire arch_try_cmpxchg_acquire |
| #elif defined(arch_try_cmpxchg_relaxed) |
| #define raw_try_cmpxchg_acquire(...) \ |
| __atomic_op_acquire(arch_try_cmpxchg, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg) |
| #define raw_try_cmpxchg_acquire arch_try_cmpxchg |
| #else |
| #define raw_try_cmpxchg_acquire(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg_release) |
| #define raw_try_cmpxchg_release arch_try_cmpxchg_release |
| #elif defined(arch_try_cmpxchg_relaxed) |
| #define raw_try_cmpxchg_release(...) \ |
| __atomic_op_release(arch_try_cmpxchg, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg) |
| #define raw_try_cmpxchg_release arch_try_cmpxchg |
| #else |
| #define raw_try_cmpxchg_release(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg_relaxed) |
| #define raw_try_cmpxchg_relaxed arch_try_cmpxchg_relaxed |
| #elif defined(arch_try_cmpxchg) |
| #define raw_try_cmpxchg_relaxed arch_try_cmpxchg |
| #else |
| #define raw_try_cmpxchg_relaxed(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg_relaxed((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg64) |
| #define raw_try_cmpxchg64 arch_try_cmpxchg64 |
| #elif defined(arch_try_cmpxchg64_relaxed) |
| #define raw_try_cmpxchg64(...) \ |
| __atomic_op_fence(arch_try_cmpxchg64, __VA_ARGS__) |
| #else |
| #define raw_try_cmpxchg64(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg64((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg64_acquire) |
| #define raw_try_cmpxchg64_acquire arch_try_cmpxchg64_acquire |
| #elif defined(arch_try_cmpxchg64_relaxed) |
| #define raw_try_cmpxchg64_acquire(...) \ |
| __atomic_op_acquire(arch_try_cmpxchg64, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg64) |
| #define raw_try_cmpxchg64_acquire arch_try_cmpxchg64 |
| #else |
| #define raw_try_cmpxchg64_acquire(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg64_acquire((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg64_release) |
| #define raw_try_cmpxchg64_release arch_try_cmpxchg64_release |
| #elif defined(arch_try_cmpxchg64_relaxed) |
| #define raw_try_cmpxchg64_release(...) \ |
| __atomic_op_release(arch_try_cmpxchg64, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg64) |
| #define raw_try_cmpxchg64_release arch_try_cmpxchg64 |
| #else |
| #define raw_try_cmpxchg64_release(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg64_release((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg64_relaxed) |
| #define raw_try_cmpxchg64_relaxed arch_try_cmpxchg64_relaxed |
| #elif defined(arch_try_cmpxchg64) |
| #define raw_try_cmpxchg64_relaxed arch_try_cmpxchg64 |
| #else |
| #define raw_try_cmpxchg64_relaxed(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg64_relaxed((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg128) |
| #define raw_try_cmpxchg128 arch_try_cmpxchg128 |
| #elif defined(arch_try_cmpxchg128_relaxed) |
| #define raw_try_cmpxchg128(...) \ |
| __atomic_op_fence(arch_try_cmpxchg128, __VA_ARGS__) |
| #else |
| #define raw_try_cmpxchg128(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg128((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg128_acquire) |
| #define raw_try_cmpxchg128_acquire arch_try_cmpxchg128_acquire |
| #elif defined(arch_try_cmpxchg128_relaxed) |
| #define raw_try_cmpxchg128_acquire(...) \ |
| __atomic_op_acquire(arch_try_cmpxchg128, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg128) |
| #define raw_try_cmpxchg128_acquire arch_try_cmpxchg128 |
| #else |
| #define raw_try_cmpxchg128_acquire(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg128_acquire((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg128_release) |
| #define raw_try_cmpxchg128_release arch_try_cmpxchg128_release |
| #elif defined(arch_try_cmpxchg128_relaxed) |
| #define raw_try_cmpxchg128_release(...) \ |
| __atomic_op_release(arch_try_cmpxchg128, __VA_ARGS__) |
| #elif defined(arch_try_cmpxchg128) |
| #define raw_try_cmpxchg128_release arch_try_cmpxchg128 |
| #else |
| #define raw_try_cmpxchg128_release(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg128_release((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #if defined(arch_try_cmpxchg128_relaxed) |
| #define raw_try_cmpxchg128_relaxed arch_try_cmpxchg128_relaxed |
| #elif defined(arch_try_cmpxchg128) |
| #define raw_try_cmpxchg128_relaxed arch_try_cmpxchg128 |
| #else |
| #define raw_try_cmpxchg128_relaxed(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg128_relaxed((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #define raw_cmpxchg_local arch_cmpxchg_local |
| |
| #ifdef arch_try_cmpxchg_local |
| #define raw_try_cmpxchg_local arch_try_cmpxchg_local |
| #else |
| #define raw_try_cmpxchg_local(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg_local((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #define raw_cmpxchg64_local arch_cmpxchg64_local |
| |
| #ifdef arch_try_cmpxchg64_local |
| #define raw_try_cmpxchg64_local arch_try_cmpxchg64_local |
| #else |
| #define raw_try_cmpxchg64_local(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg64_local((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #define raw_cmpxchg128_local arch_cmpxchg128_local |
| |
| #ifdef arch_try_cmpxchg128_local |
| #define raw_try_cmpxchg128_local arch_try_cmpxchg128_local |
| #else |
| #define raw_try_cmpxchg128_local(_ptr, _oldp, _new) \ |
| ({ \ |
| typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \ |
| ___r = raw_cmpxchg128_local((_ptr), ___o, (_new)); \ |
| if (unlikely(___r != ___o)) \ |
| *___op = ___r; \ |
| likely(___r == ___o); \ |
| }) |
| #endif |
| |
| #define raw_sync_cmpxchg arch_sync_cmpxchg |
| |
| /** |
| * raw_atomic_read() - atomic load with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically loads the value of @v with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_read() elsewhere. |
| * |
| * Return: The value loaded from @v. |
| */ |
| static __always_inline int |
| raw_atomic_read(const atomic_t *v) |
| { |
| return arch_atomic_read(v); |
| } |
| |
| /** |
| * raw_atomic_read_acquire() - atomic load with acquire ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically loads the value of @v with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_read_acquire() elsewhere. |
| * |
| * Return: The value loaded from @v. |
| */ |
| static __always_inline int |
| raw_atomic_read_acquire(const atomic_t *v) |
| { |
| #if defined(arch_atomic_read_acquire) |
| return arch_atomic_read_acquire(v); |
| #else |
| int ret; |
| |
| if (__native_word(atomic_t)) { |
| ret = smp_load_acquire(&(v)->counter); |
| } else { |
| ret = raw_atomic_read(v); |
| __atomic_acquire_fence(); |
| } |
| |
| return ret; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_set() - atomic set with relaxed ordering |
| * @v: pointer to atomic_t |
| * @i: int value to assign |
| * |
| * Atomically sets @v to @i with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_set() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_set(atomic_t *v, int i) |
| { |
| arch_atomic_set(v, i); |
| } |
| |
| /** |
| * raw_atomic_set_release() - atomic set with release ordering |
| * @v: pointer to atomic_t |
| * @i: int value to assign |
| * |
| * Atomically sets @v to @i with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_set_release() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_set_release(atomic_t *v, int i) |
| { |
| #if defined(arch_atomic_set_release) |
| arch_atomic_set_release(v, i); |
| #else |
| if (__native_word(atomic_t)) { |
| smp_store_release(&(v)->counter, i); |
| } else { |
| __atomic_release_fence(); |
| raw_atomic_set(v, i); |
| } |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add() - atomic add with relaxed ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_add(int i, atomic_t *v) |
| { |
| arch_atomic_add(i, v); |
| } |
| |
| /** |
| * raw_atomic_add_return() - atomic add with full ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_add_return(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_return) |
| return arch_atomic_add_return(i, v); |
| #elif defined(arch_atomic_add_return_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_add_return_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_add_return" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_return_acquire() - atomic add with acquire ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_add_return_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_return_acquire) |
| return arch_atomic_add_return_acquire(i, v); |
| #elif defined(arch_atomic_add_return_relaxed) |
| int ret = arch_atomic_add_return_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_add_return) |
| return arch_atomic_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_add_return_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_return_release() - atomic add with release ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_add_return_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_return_release) |
| return arch_atomic_add_return_release(i, v); |
| #elif defined(arch_atomic_add_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_add_return_relaxed(i, v); |
| #elif defined(arch_atomic_add_return) |
| return arch_atomic_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_add_return_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_return_relaxed() - atomic add with relaxed ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_add_return_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_return_relaxed) |
| return arch_atomic_add_return_relaxed(i, v); |
| #elif defined(arch_atomic_add_return) |
| return arch_atomic_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_add_return_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_add() - atomic add with full ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_add() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_add(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_add) |
| return arch_atomic_fetch_add(i, v); |
| #elif defined(arch_atomic_fetch_add_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_add_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_fetch_add" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_add_acquire() - atomic add with acquire ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_add_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_add_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_add_acquire) |
| return arch_atomic_fetch_add_acquire(i, v); |
| #elif defined(arch_atomic_fetch_add_relaxed) |
| int ret = arch_atomic_fetch_add_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_add) |
| return arch_atomic_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_add_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_add_release() - atomic add with release ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_add_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_add_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_add_release) |
| return arch_atomic_fetch_add_release(i, v); |
| #elif defined(arch_atomic_fetch_add_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_add_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_add) |
| return arch_atomic_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_add_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_add_relaxed() - atomic add with relaxed ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_add_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_add_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_add_relaxed) |
| return arch_atomic_fetch_add_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_add) |
| return arch_atomic_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_add_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_sub() - atomic subtract with relaxed ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_sub(int i, atomic_t *v) |
| { |
| arch_atomic_sub(i, v); |
| } |
| |
| /** |
| * raw_atomic_sub_return() - atomic subtract with full ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_sub_return(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_sub_return) |
| return arch_atomic_sub_return(i, v); |
| #elif defined(arch_atomic_sub_return_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_sub_return_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_sub_return" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_sub_return_acquire() - atomic subtract with acquire ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_sub_return_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_sub_return_acquire) |
| return arch_atomic_sub_return_acquire(i, v); |
| #elif defined(arch_atomic_sub_return_relaxed) |
| int ret = arch_atomic_sub_return_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_sub_return) |
| return arch_atomic_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_sub_return_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_sub_return_release() - atomic subtract with release ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_sub_return_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_sub_return_release) |
| return arch_atomic_sub_return_release(i, v); |
| #elif defined(arch_atomic_sub_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_sub_return_relaxed(i, v); |
| #elif defined(arch_atomic_sub_return) |
| return arch_atomic_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_sub_return_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_sub_return_relaxed() - atomic subtract with relaxed ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_sub_return_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_sub_return_relaxed) |
| return arch_atomic_sub_return_relaxed(i, v); |
| #elif defined(arch_atomic_sub_return) |
| return arch_atomic_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic_sub_return_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_sub() - atomic subtract with full ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_sub() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_sub(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_sub) |
| return arch_atomic_fetch_sub(i, v); |
| #elif defined(arch_atomic_fetch_sub_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_sub_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_fetch_sub" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_sub_acquire() - atomic subtract with acquire ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_sub_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_sub_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_sub_acquire) |
| return arch_atomic_fetch_sub_acquire(i, v); |
| #elif defined(arch_atomic_fetch_sub_relaxed) |
| int ret = arch_atomic_fetch_sub_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_sub) |
| return arch_atomic_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_sub_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_sub_release() - atomic subtract with release ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_sub_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_sub_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_sub_release) |
| return arch_atomic_fetch_sub_release(i, v); |
| #elif defined(arch_atomic_fetch_sub_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_sub_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_sub) |
| return arch_atomic_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_sub_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_sub_relaxed() - atomic subtract with relaxed ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_sub_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_sub_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_sub_relaxed) |
| return arch_atomic_fetch_sub_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_sub) |
| return arch_atomic_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_sub_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc() - atomic increment with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_inc(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc) |
| arch_atomic_inc(v); |
| #else |
| raw_atomic_add(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_return() - atomic increment with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_inc_return(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_return) |
| return arch_atomic_inc_return(v); |
| #elif defined(arch_atomic_inc_return_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_inc_return_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_add_return(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_return_acquire() - atomic increment with acquire ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_inc_return_acquire(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_return_acquire) |
| return arch_atomic_inc_return_acquire(v); |
| #elif defined(arch_atomic_inc_return_relaxed) |
| int ret = arch_atomic_inc_return_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_inc_return) |
| return arch_atomic_inc_return(v); |
| #else |
| return raw_atomic_add_return_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_return_release() - atomic increment with release ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_inc_return_release(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_return_release) |
| return arch_atomic_inc_return_release(v); |
| #elif defined(arch_atomic_inc_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_inc_return_relaxed(v); |
| #elif defined(arch_atomic_inc_return) |
| return arch_atomic_inc_return(v); |
| #else |
| return raw_atomic_add_return_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_return_relaxed() - atomic increment with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_inc_return_relaxed(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_return_relaxed) |
| return arch_atomic_inc_return_relaxed(v); |
| #elif defined(arch_atomic_inc_return) |
| return arch_atomic_inc_return(v); |
| #else |
| return raw_atomic_add_return_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_inc() - atomic increment with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_inc() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_inc(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_inc) |
| return arch_atomic_fetch_inc(v); |
| #elif defined(arch_atomic_fetch_inc_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_inc_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_fetch_add(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_inc_acquire() - atomic increment with acquire ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_inc_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_inc_acquire(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_inc_acquire) |
| return arch_atomic_fetch_inc_acquire(v); |
| #elif defined(arch_atomic_fetch_inc_relaxed) |
| int ret = arch_atomic_fetch_inc_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_inc) |
| return arch_atomic_fetch_inc(v); |
| #else |
| return raw_atomic_fetch_add_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_inc_release() - atomic increment with release ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_inc_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_inc_release(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_inc_release) |
| return arch_atomic_fetch_inc_release(v); |
| #elif defined(arch_atomic_fetch_inc_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_inc_relaxed(v); |
| #elif defined(arch_atomic_fetch_inc) |
| return arch_atomic_fetch_inc(v); |
| #else |
| return raw_atomic_fetch_add_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_inc_relaxed() - atomic increment with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_inc_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_inc_relaxed(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_inc_relaxed) |
| return arch_atomic_fetch_inc_relaxed(v); |
| #elif defined(arch_atomic_fetch_inc) |
| return arch_atomic_fetch_inc(v); |
| #else |
| return raw_atomic_fetch_add_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_dec(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec) |
| arch_atomic_dec(v); |
| #else |
| raw_atomic_sub(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_return() - atomic decrement with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_dec_return(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_return) |
| return arch_atomic_dec_return(v); |
| #elif defined(arch_atomic_dec_return_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_dec_return_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_sub_return(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_return_acquire() - atomic decrement with acquire ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_dec_return_acquire(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_return_acquire) |
| return arch_atomic_dec_return_acquire(v); |
| #elif defined(arch_atomic_dec_return_relaxed) |
| int ret = arch_atomic_dec_return_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_dec_return) |
| return arch_atomic_dec_return(v); |
| #else |
| return raw_atomic_sub_return_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_return_release() - atomic decrement with release ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_dec_return_release(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_return_release) |
| return arch_atomic_dec_return_release(v); |
| #elif defined(arch_atomic_dec_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_dec_return_relaxed(v); |
| #elif defined(arch_atomic_dec_return) |
| return arch_atomic_dec_return(v); |
| #else |
| return raw_atomic_sub_return_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_return_relaxed() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_dec_return_relaxed(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_return_relaxed) |
| return arch_atomic_dec_return_relaxed(v); |
| #elif defined(arch_atomic_dec_return) |
| return arch_atomic_dec_return(v); |
| #else |
| return raw_atomic_sub_return_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_dec() - atomic decrement with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_dec() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_dec(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_dec) |
| return arch_atomic_fetch_dec(v); |
| #elif defined(arch_atomic_fetch_dec_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_dec_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_fetch_sub(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_dec_acquire() - atomic decrement with acquire ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_dec_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_dec_acquire(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_dec_acquire) |
| return arch_atomic_fetch_dec_acquire(v); |
| #elif defined(arch_atomic_fetch_dec_relaxed) |
| int ret = arch_atomic_fetch_dec_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_dec) |
| return arch_atomic_fetch_dec(v); |
| #else |
| return raw_atomic_fetch_sub_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_dec_release() - atomic decrement with release ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_dec_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_dec_release(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_dec_release) |
| return arch_atomic_fetch_dec_release(v); |
| #elif defined(arch_atomic_fetch_dec_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_dec_relaxed(v); |
| #elif defined(arch_atomic_fetch_dec) |
| return arch_atomic_fetch_dec(v); |
| #else |
| return raw_atomic_fetch_sub_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_dec_relaxed() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_dec_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_dec_relaxed(atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_dec_relaxed) |
| return arch_atomic_fetch_dec_relaxed(v); |
| #elif defined(arch_atomic_fetch_dec) |
| return arch_atomic_fetch_dec(v); |
| #else |
| return raw_atomic_fetch_sub_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_and() - atomic bitwise AND with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_and() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_and(int i, atomic_t *v) |
| { |
| arch_atomic_and(i, v); |
| } |
| |
| /** |
| * raw_atomic_fetch_and() - atomic bitwise AND with full ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_and() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_and(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_and) |
| return arch_atomic_fetch_and(i, v); |
| #elif defined(arch_atomic_fetch_and_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_and_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_fetch_and" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_and_acquire() - atomic bitwise AND with acquire ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_and_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_and_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_and_acquire) |
| return arch_atomic_fetch_and_acquire(i, v); |
| #elif defined(arch_atomic_fetch_and_relaxed) |
| int ret = arch_atomic_fetch_and_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_and) |
| return arch_atomic_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_and_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_and_release() - atomic bitwise AND with release ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_and_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_and_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_and_release) |
| return arch_atomic_fetch_and_release(i, v); |
| #elif defined(arch_atomic_fetch_and_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_and_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_and) |
| return arch_atomic_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_and_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_and_relaxed() - atomic bitwise AND with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_and_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_and_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_and_relaxed) |
| return arch_atomic_fetch_and_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_and) |
| return arch_atomic_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_and_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_andnot() - atomic bitwise AND NOT with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & ~@i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_andnot() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_andnot(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_andnot) |
| arch_atomic_andnot(i, v); |
| #else |
| raw_atomic_and(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_andnot() - atomic bitwise AND NOT with full ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & ~@i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_andnot() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_andnot(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_andnot) |
| return arch_atomic_fetch_andnot(i, v); |
| #elif defined(arch_atomic_fetch_andnot_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_andnot_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_fetch_and(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_andnot_acquire() - atomic bitwise AND NOT with acquire ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & ~@i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_andnot_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_andnot_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_andnot_acquire) |
| return arch_atomic_fetch_andnot_acquire(i, v); |
| #elif defined(arch_atomic_fetch_andnot_relaxed) |
| int ret = arch_atomic_fetch_andnot_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_andnot) |
| return arch_atomic_fetch_andnot(i, v); |
| #else |
| return raw_atomic_fetch_and_acquire(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_andnot_release() - atomic bitwise AND NOT with release ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & ~@i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_andnot_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_andnot_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_andnot_release) |
| return arch_atomic_fetch_andnot_release(i, v); |
| #elif defined(arch_atomic_fetch_andnot_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_andnot_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_andnot) |
| return arch_atomic_fetch_andnot(i, v); |
| #else |
| return raw_atomic_fetch_and_release(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_andnot_relaxed() - atomic bitwise AND NOT with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v & ~@i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_andnot_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_andnot_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_andnot_relaxed) |
| return arch_atomic_fetch_andnot_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_andnot) |
| return arch_atomic_fetch_andnot(i, v); |
| #else |
| return raw_atomic_fetch_and_relaxed(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_or() - atomic bitwise OR with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v | @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_or() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_or(int i, atomic_t *v) |
| { |
| arch_atomic_or(i, v); |
| } |
| |
| /** |
| * raw_atomic_fetch_or() - atomic bitwise OR with full ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v | @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_or() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_or(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_or) |
| return arch_atomic_fetch_or(i, v); |
| #elif defined(arch_atomic_fetch_or_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_or_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_fetch_or" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_or_acquire() - atomic bitwise OR with acquire ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v | @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_or_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_or_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_or_acquire) |
| return arch_atomic_fetch_or_acquire(i, v); |
| #elif defined(arch_atomic_fetch_or_relaxed) |
| int ret = arch_atomic_fetch_or_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_or) |
| return arch_atomic_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_or_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_or_release() - atomic bitwise OR with release ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v | @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_or_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_or_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_or_release) |
| return arch_atomic_fetch_or_release(i, v); |
| #elif defined(arch_atomic_fetch_or_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_or_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_or) |
| return arch_atomic_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_or_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_or_relaxed() - atomic bitwise OR with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v | @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_or_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_or_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_or_relaxed) |
| return arch_atomic_fetch_or_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_or) |
| return arch_atomic_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_or_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_xor() - atomic bitwise XOR with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v ^ @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_xor() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic_xor(int i, atomic_t *v) |
| { |
| arch_atomic_xor(i, v); |
| } |
| |
| /** |
| * raw_atomic_fetch_xor() - atomic bitwise XOR with full ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v ^ @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_xor() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_xor(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_xor) |
| return arch_atomic_fetch_xor(i, v); |
| #elif defined(arch_atomic_fetch_xor_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_fetch_xor_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic_fetch_xor" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_xor_acquire() - atomic bitwise XOR with acquire ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v ^ @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_xor_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_xor_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_xor_acquire) |
| return arch_atomic_fetch_xor_acquire(i, v); |
| #elif defined(arch_atomic_fetch_xor_relaxed) |
| int ret = arch_atomic_fetch_xor_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_fetch_xor) |
| return arch_atomic_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_xor_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_xor_release() - atomic bitwise XOR with release ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v ^ @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_xor_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_xor_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_xor_release) |
| return arch_atomic_fetch_xor_release(i, v); |
| #elif defined(arch_atomic_fetch_xor_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_fetch_xor_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_xor) |
| return arch_atomic_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_xor_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_xor_relaxed() - atomic bitwise XOR with relaxed ordering |
| * @i: int value |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v ^ @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_xor_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_xor_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_fetch_xor_relaxed) |
| return arch_atomic_fetch_xor_relaxed(i, v); |
| #elif defined(arch_atomic_fetch_xor) |
| return arch_atomic_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic_fetch_xor_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic_xchg() - atomic exchange with full ordering |
| * @v: pointer to atomic_t |
| * @new: int value to assign |
| * |
| * Atomically updates @v to @new with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_xchg() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_xchg(atomic_t *v, int new) |
| { |
| #if defined(arch_atomic_xchg) |
| return arch_atomic_xchg(v, new); |
| #elif defined(arch_atomic_xchg_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_xchg_relaxed(v, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_xchg(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_xchg_acquire() - atomic exchange with acquire ordering |
| * @v: pointer to atomic_t |
| * @new: int value to assign |
| * |
| * Atomically updates @v to @new with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_xchg_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_xchg_acquire(atomic_t *v, int new) |
| { |
| #if defined(arch_atomic_xchg_acquire) |
| return arch_atomic_xchg_acquire(v, new); |
| #elif defined(arch_atomic_xchg_relaxed) |
| int ret = arch_atomic_xchg_relaxed(v, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_xchg) |
| return arch_atomic_xchg(v, new); |
| #else |
| return raw_xchg_acquire(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_xchg_release() - atomic exchange with release ordering |
| * @v: pointer to atomic_t |
| * @new: int value to assign |
| * |
| * Atomically updates @v to @new with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_xchg_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_xchg_release(atomic_t *v, int new) |
| { |
| #if defined(arch_atomic_xchg_release) |
| return arch_atomic_xchg_release(v, new); |
| #elif defined(arch_atomic_xchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_xchg_relaxed(v, new); |
| #elif defined(arch_atomic_xchg) |
| return arch_atomic_xchg(v, new); |
| #else |
| return raw_xchg_release(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_xchg_relaxed() - atomic exchange with relaxed ordering |
| * @v: pointer to atomic_t |
| * @new: int value to assign |
| * |
| * Atomically updates @v to @new with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_xchg_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_xchg_relaxed(atomic_t *v, int new) |
| { |
| #if defined(arch_atomic_xchg_relaxed) |
| return arch_atomic_xchg_relaxed(v, new); |
| #elif defined(arch_atomic_xchg) |
| return arch_atomic_xchg(v, new); |
| #else |
| return raw_xchg_relaxed(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_cmpxchg() - atomic compare and exchange with full ordering |
| * @v: pointer to atomic_t |
| * @old: int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_cmpxchg() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_cmpxchg(atomic_t *v, int old, int new) |
| { |
| #if defined(arch_atomic_cmpxchg) |
| return arch_atomic_cmpxchg(v, old, new); |
| #elif defined(arch_atomic_cmpxchg_relaxed) |
| int ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_cmpxchg_relaxed(v, old, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_cmpxchg(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_cmpxchg_acquire() - atomic compare and exchange with acquire ordering |
| * @v: pointer to atomic_t |
| * @old: int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_cmpxchg_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_cmpxchg_acquire(atomic_t *v, int old, int new) |
| { |
| #if defined(arch_atomic_cmpxchg_acquire) |
| return arch_atomic_cmpxchg_acquire(v, old, new); |
| #elif defined(arch_atomic_cmpxchg_relaxed) |
| int ret = arch_atomic_cmpxchg_relaxed(v, old, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_cmpxchg) |
| return arch_atomic_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_acquire(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_cmpxchg_release() - atomic compare and exchange with release ordering |
| * @v: pointer to atomic_t |
| * @old: int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_cmpxchg_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_cmpxchg_release(atomic_t *v, int old, int new) |
| { |
| #if defined(arch_atomic_cmpxchg_release) |
| return arch_atomic_cmpxchg_release(v, old, new); |
| #elif defined(arch_atomic_cmpxchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic_cmpxchg) |
| return arch_atomic_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_release(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_cmpxchg_relaxed() - atomic compare and exchange with relaxed ordering |
| * @v: pointer to atomic_t |
| * @old: int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_cmpxchg_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_cmpxchg_relaxed(atomic_t *v, int old, int new) |
| { |
| #if defined(arch_atomic_cmpxchg_relaxed) |
| return arch_atomic_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic_cmpxchg) |
| return arch_atomic_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_relaxed(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_try_cmpxchg() - atomic compare and exchange with full ordering |
| * @v: pointer to atomic_t |
| * @old: pointer to int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with full ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic_try_cmpxchg() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_try_cmpxchg(atomic_t *v, int *old, int new) |
| { |
| #if defined(arch_atomic_try_cmpxchg) |
| return arch_atomic_try_cmpxchg(v, old, new); |
| #elif defined(arch_atomic_try_cmpxchg_relaxed) |
| bool ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_try_cmpxchg_relaxed(v, old, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| int r, o = *old; |
| r = raw_atomic_cmpxchg(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_try_cmpxchg_acquire() - atomic compare and exchange with acquire ordering |
| * @v: pointer to atomic_t |
| * @old: pointer to int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with acquire ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic_try_cmpxchg_acquire() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new) |
| { |
| #if defined(arch_atomic_try_cmpxchg_acquire) |
| return arch_atomic_try_cmpxchg_acquire(v, old, new); |
| #elif defined(arch_atomic_try_cmpxchg_relaxed) |
| bool ret = arch_atomic_try_cmpxchg_relaxed(v, old, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_try_cmpxchg) |
| return arch_atomic_try_cmpxchg(v, old, new); |
| #else |
| int r, o = *old; |
| r = raw_atomic_cmpxchg_acquire(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_try_cmpxchg_release() - atomic compare and exchange with release ordering |
| * @v: pointer to atomic_t |
| * @old: pointer to int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with release ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic_try_cmpxchg_release() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new) |
| { |
| #if defined(arch_atomic_try_cmpxchg_release) |
| return arch_atomic_try_cmpxchg_release(v, old, new); |
| #elif defined(arch_atomic_try_cmpxchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_try_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic_try_cmpxchg) |
| return arch_atomic_try_cmpxchg(v, old, new); |
| #else |
| int r, o = *old; |
| r = raw_atomic_cmpxchg_release(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_try_cmpxchg_relaxed() - atomic compare and exchange with relaxed ordering |
| * @v: pointer to atomic_t |
| * @old: pointer to int value to compare with |
| * @new: int value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with relaxed ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic_try_cmpxchg_relaxed() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new) |
| { |
| #if defined(arch_atomic_try_cmpxchg_relaxed) |
| return arch_atomic_try_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic_try_cmpxchg) |
| return arch_atomic_try_cmpxchg(v, old, new); |
| #else |
| int r, o = *old; |
| r = raw_atomic_cmpxchg_relaxed(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_sub_and_test() - atomic subtract and test if zero with full ordering |
| * @i: int value to subtract |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_sub_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_sub_and_test(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_sub_and_test) |
| return arch_atomic_sub_and_test(i, v); |
| #else |
| return raw_atomic_sub_return(i, v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_and_test() - atomic decrement and test if zero with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_dec_and_test(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_and_test) |
| return arch_atomic_dec_and_test(v); |
| #else |
| return raw_atomic_dec_return(v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_and_test() - atomic increment and test if zero with full ordering |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_inc_and_test(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_and_test) |
| return arch_atomic_inc_and_test(v); |
| #else |
| return raw_atomic_inc_return(v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_negative() - atomic add and test if negative with full ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_negative() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_add_negative(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_negative) |
| return arch_atomic_add_negative(i, v); |
| #elif defined(arch_atomic_add_negative_relaxed) |
| bool ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic_add_negative_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic_add_return(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_negative_acquire() - atomic add and test if negative with acquire ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_negative_acquire() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_add_negative_acquire(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_negative_acquire) |
| return arch_atomic_add_negative_acquire(i, v); |
| #elif defined(arch_atomic_add_negative_relaxed) |
| bool ret = arch_atomic_add_negative_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic_add_negative) |
| return arch_atomic_add_negative(i, v); |
| #else |
| return raw_atomic_add_return_acquire(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_negative_release() - atomic add and test if negative with release ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_negative_release() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_add_negative_release(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_negative_release) |
| return arch_atomic_add_negative_release(i, v); |
| #elif defined(arch_atomic_add_negative_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic_add_negative_relaxed(i, v); |
| #elif defined(arch_atomic_add_negative) |
| return arch_atomic_add_negative(i, v); |
| #else |
| return raw_atomic_add_return_release(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_negative_relaxed() - atomic add and test if negative with relaxed ordering |
| * @i: int value to add |
| * @v: pointer to atomic_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_negative_relaxed() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_add_negative_relaxed(int i, atomic_t *v) |
| { |
| #if defined(arch_atomic_add_negative_relaxed) |
| return arch_atomic_add_negative_relaxed(i, v); |
| #elif defined(arch_atomic_add_negative) |
| return arch_atomic_add_negative(i, v); |
| #else |
| return raw_atomic_add_return_relaxed(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_fetch_add_unless() - atomic add unless value with full ordering |
| * @v: pointer to atomic_t |
| * @a: int value to add |
| * @u: int value to compare with |
| * |
| * If (@v != @u), atomically updates @v to (@v + @a) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_fetch_add_unless() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline int |
| raw_atomic_fetch_add_unless(atomic_t *v, int a, int u) |
| { |
| #if defined(arch_atomic_fetch_add_unless) |
| return arch_atomic_fetch_add_unless(v, a, u); |
| #else |
| int c = raw_atomic_read(v); |
| |
| do { |
| if (unlikely(c == u)) |
| break; |
| } while (!raw_atomic_try_cmpxchg(v, &c, c + a)); |
| |
| return c; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_add_unless() - atomic add unless value with full ordering |
| * @v: pointer to atomic_t |
| * @a: int value to add |
| * @u: int value to compare with |
| * |
| * If (@v != @u), atomically updates @v to (@v + @a) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_add_unless() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_add_unless(atomic_t *v, int a, int u) |
| { |
| #if defined(arch_atomic_add_unless) |
| return arch_atomic_add_unless(v, a, u); |
| #else |
| return raw_atomic_fetch_add_unless(v, a, u) != u; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_not_zero() - atomic increment unless zero with full ordering |
| * @v: pointer to atomic_t |
| * |
| * If (@v != 0), atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_not_zero() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_inc_not_zero(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_not_zero) |
| return arch_atomic_inc_not_zero(v); |
| #else |
| return raw_atomic_add_unless(v, 1, 0); |
| #endif |
| } |
| |
| /** |
| * raw_atomic_inc_unless_negative() - atomic increment unless negative with full ordering |
| * @v: pointer to atomic_t |
| * |
| * If (@v >= 0), atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_inc_unless_negative() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_inc_unless_negative(atomic_t *v) |
| { |
| #if defined(arch_atomic_inc_unless_negative) |
| return arch_atomic_inc_unless_negative(v); |
| #else |
| int c = raw_atomic_read(v); |
| |
| do { |
| if (unlikely(c < 0)) |
| return false; |
| } while (!raw_atomic_try_cmpxchg(v, &c, c + 1)); |
| |
| return true; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_unless_positive() - atomic decrement unless positive with full ordering |
| * @v: pointer to atomic_t |
| * |
| * If (@v <= 0), atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_unless_positive() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic_dec_unless_positive(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_unless_positive) |
| return arch_atomic_dec_unless_positive(v); |
| #else |
| int c = raw_atomic_read(v); |
| |
| do { |
| if (unlikely(c > 0)) |
| return false; |
| } while (!raw_atomic_try_cmpxchg(v, &c, c - 1)); |
| |
| return true; |
| #endif |
| } |
| |
| /** |
| * raw_atomic_dec_if_positive() - atomic decrement if positive with full ordering |
| * @v: pointer to atomic_t |
| * |
| * If (@v > 0), atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic_dec_if_positive() elsewhere. |
| * |
| * Return: The old value of (@v - 1), regardless of whether @v was updated. |
| */ |
| static __always_inline int |
| raw_atomic_dec_if_positive(atomic_t *v) |
| { |
| #if defined(arch_atomic_dec_if_positive) |
| return arch_atomic_dec_if_positive(v); |
| #else |
| int dec, c = raw_atomic_read(v); |
| |
| do { |
| dec = c - 1; |
| if (unlikely(dec < 0)) |
| break; |
| } while (!raw_atomic_try_cmpxchg(v, &c, dec)); |
| |
| return dec; |
| #endif |
| } |
| |
| #ifdef CONFIG_GENERIC_ATOMIC64 |
| #include <asm-generic/atomic64.h> |
| #endif |
| |
| /** |
| * raw_atomic64_read() - atomic load with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically loads the value of @v with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_read() elsewhere. |
| * |
| * Return: The value loaded from @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_read(const atomic64_t *v) |
| { |
| return arch_atomic64_read(v); |
| } |
| |
| /** |
| * raw_atomic64_read_acquire() - atomic load with acquire ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically loads the value of @v with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_read_acquire() elsewhere. |
| * |
| * Return: The value loaded from @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_read_acquire(const atomic64_t *v) |
| { |
| #if defined(arch_atomic64_read_acquire) |
| return arch_atomic64_read_acquire(v); |
| #else |
| s64 ret; |
| |
| if (__native_word(atomic64_t)) { |
| ret = smp_load_acquire(&(v)->counter); |
| } else { |
| ret = raw_atomic64_read(v); |
| __atomic_acquire_fence(); |
| } |
| |
| return ret; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_set() - atomic set with relaxed ordering |
| * @v: pointer to atomic64_t |
| * @i: s64 value to assign |
| * |
| * Atomically sets @v to @i with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_set() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_set(atomic64_t *v, s64 i) |
| { |
| arch_atomic64_set(v, i); |
| } |
| |
| /** |
| * raw_atomic64_set_release() - atomic set with release ordering |
| * @v: pointer to atomic64_t |
| * @i: s64 value to assign |
| * |
| * Atomically sets @v to @i with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_set_release() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_set_release(atomic64_t *v, s64 i) |
| { |
| #if defined(arch_atomic64_set_release) |
| arch_atomic64_set_release(v, i); |
| #else |
| if (__native_word(atomic64_t)) { |
| smp_store_release(&(v)->counter, i); |
| } else { |
| __atomic_release_fence(); |
| raw_atomic64_set(v, i); |
| } |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add() - atomic add with relaxed ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_add(s64 i, atomic64_t *v) |
| { |
| arch_atomic64_add(i, v); |
| } |
| |
| /** |
| * raw_atomic64_add_return() - atomic add with full ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_add_return(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_return) |
| return arch_atomic64_add_return(i, v); |
| #elif defined(arch_atomic64_add_return_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_add_return_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_add_return" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_return_acquire() - atomic add with acquire ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_add_return_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_return_acquire) |
| return arch_atomic64_add_return_acquire(i, v); |
| #elif defined(arch_atomic64_add_return_relaxed) |
| s64 ret = arch_atomic64_add_return_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_add_return) |
| return arch_atomic64_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_add_return_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_return_release() - atomic add with release ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_add_return_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_return_release) |
| return arch_atomic64_add_return_release(i, v); |
| #elif defined(arch_atomic64_add_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_add_return_relaxed(i, v); |
| #elif defined(arch_atomic64_add_return) |
| return arch_atomic64_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_add_return_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_return_relaxed() - atomic add with relaxed ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_add_return_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_return_relaxed) |
| return arch_atomic64_add_return_relaxed(i, v); |
| #elif defined(arch_atomic64_add_return) |
| return arch_atomic64_add_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_add_return_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_add() - atomic add with full ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_add() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_add(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_add) |
| return arch_atomic64_fetch_add(i, v); |
| #elif defined(arch_atomic64_fetch_add_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_add_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_fetch_add" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_add_acquire() - atomic add with acquire ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_add_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_add_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_add_acquire) |
| return arch_atomic64_fetch_add_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_add_relaxed) |
| s64 ret = arch_atomic64_fetch_add_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_add) |
| return arch_atomic64_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_add_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_add_release() - atomic add with release ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_add_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_add_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_add_release) |
| return arch_atomic64_fetch_add_release(i, v); |
| #elif defined(arch_atomic64_fetch_add_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_add_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_add) |
| return arch_atomic64_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_add_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_add_relaxed() - atomic add with relaxed ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_add_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_add_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_add_relaxed) |
| return arch_atomic64_fetch_add_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_add) |
| return arch_atomic64_fetch_add(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_add_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_sub() - atomic subtract with relaxed ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_sub(s64 i, atomic64_t *v) |
| { |
| arch_atomic64_sub(i, v); |
| } |
| |
| /** |
| * raw_atomic64_sub_return() - atomic subtract with full ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_sub_return(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_sub_return) |
| return arch_atomic64_sub_return(i, v); |
| #elif defined(arch_atomic64_sub_return_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_sub_return_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_sub_return" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_sub_return_acquire() - atomic subtract with acquire ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_sub_return_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_sub_return_acquire) |
| return arch_atomic64_sub_return_acquire(i, v); |
| #elif defined(arch_atomic64_sub_return_relaxed) |
| s64 ret = arch_atomic64_sub_return_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_sub_return) |
| return arch_atomic64_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_sub_return_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_sub_return_release() - atomic subtract with release ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_sub_return_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_sub_return_release) |
| return arch_atomic64_sub_return_release(i, v); |
| #elif defined(arch_atomic64_sub_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_sub_return_relaxed(i, v); |
| #elif defined(arch_atomic64_sub_return) |
| return arch_atomic64_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_sub_return_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_sub_return_relaxed() - atomic subtract with relaxed ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_sub_return_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_sub_return_relaxed) |
| return arch_atomic64_sub_return_relaxed(i, v); |
| #elif defined(arch_atomic64_sub_return) |
| return arch_atomic64_sub_return(i, v); |
| #else |
| #error "Unable to define raw_atomic64_sub_return_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_sub() - atomic subtract with full ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_sub() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_sub(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_sub) |
| return arch_atomic64_fetch_sub(i, v); |
| #elif defined(arch_atomic64_fetch_sub_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_sub_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_fetch_sub" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_sub_acquire() - atomic subtract with acquire ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_sub_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_sub_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_sub_acquire) |
| return arch_atomic64_fetch_sub_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_sub_relaxed) |
| s64 ret = arch_atomic64_fetch_sub_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_sub) |
| return arch_atomic64_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_sub_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_sub_release() - atomic subtract with release ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_sub_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_sub_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_sub_release) |
| return arch_atomic64_fetch_sub_release(i, v); |
| #elif defined(arch_atomic64_fetch_sub_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_sub_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_sub) |
| return arch_atomic64_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_sub_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_sub_relaxed() - atomic subtract with relaxed ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_sub_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_sub_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_sub_relaxed) |
| return arch_atomic64_fetch_sub_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_sub) |
| return arch_atomic64_fetch_sub(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_sub_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc() - atomic increment with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_inc(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc) |
| arch_atomic64_inc(v); |
| #else |
| raw_atomic64_add(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_return() - atomic increment with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_inc_return(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_return) |
| return arch_atomic64_inc_return(v); |
| #elif defined(arch_atomic64_inc_return_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_inc_return_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_add_return(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_return_acquire() - atomic increment with acquire ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_inc_return_acquire(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_return_acquire) |
| return arch_atomic64_inc_return_acquire(v); |
| #elif defined(arch_atomic64_inc_return_relaxed) |
| s64 ret = arch_atomic64_inc_return_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_inc_return) |
| return arch_atomic64_inc_return(v); |
| #else |
| return raw_atomic64_add_return_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_return_release() - atomic increment with release ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_inc_return_release(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_return_release) |
| return arch_atomic64_inc_return_release(v); |
| #elif defined(arch_atomic64_inc_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_inc_return_relaxed(v); |
| #elif defined(arch_atomic64_inc_return) |
| return arch_atomic64_inc_return(v); |
| #else |
| return raw_atomic64_add_return_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_return_relaxed() - atomic increment with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_inc_return_relaxed(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_return_relaxed) |
| return arch_atomic64_inc_return_relaxed(v); |
| #elif defined(arch_atomic64_inc_return) |
| return arch_atomic64_inc_return(v); |
| #else |
| return raw_atomic64_add_return_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_inc() - atomic increment with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_inc() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_inc(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_inc) |
| return arch_atomic64_fetch_inc(v); |
| #elif defined(arch_atomic64_fetch_inc_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_inc_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_fetch_add(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_inc_acquire() - atomic increment with acquire ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_inc_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_inc_acquire(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_inc_acquire) |
| return arch_atomic64_fetch_inc_acquire(v); |
| #elif defined(arch_atomic64_fetch_inc_relaxed) |
| s64 ret = arch_atomic64_fetch_inc_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_inc) |
| return arch_atomic64_fetch_inc(v); |
| #else |
| return raw_atomic64_fetch_add_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_inc_release() - atomic increment with release ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_inc_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_inc_release(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_inc_release) |
| return arch_atomic64_fetch_inc_release(v); |
| #elif defined(arch_atomic64_fetch_inc_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_inc_relaxed(v); |
| #elif defined(arch_atomic64_fetch_inc) |
| return arch_atomic64_fetch_inc(v); |
| #else |
| return raw_atomic64_fetch_add_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_inc_relaxed() - atomic increment with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_inc_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_inc_relaxed(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_inc_relaxed) |
| return arch_atomic64_fetch_inc_relaxed(v); |
| #elif defined(arch_atomic64_fetch_inc) |
| return arch_atomic64_fetch_inc(v); |
| #else |
| return raw_atomic64_fetch_add_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_dec(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec) |
| arch_atomic64_dec(v); |
| #else |
| raw_atomic64_sub(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_return() - atomic decrement with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_return() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_dec_return(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_return) |
| return arch_atomic64_dec_return(v); |
| #elif defined(arch_atomic64_dec_return_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_dec_return_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_sub_return(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_return_acquire() - atomic decrement with acquire ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_return_acquire() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_dec_return_acquire(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_return_acquire) |
| return arch_atomic64_dec_return_acquire(v); |
| #elif defined(arch_atomic64_dec_return_relaxed) |
| s64 ret = arch_atomic64_dec_return_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_dec_return) |
| return arch_atomic64_dec_return(v); |
| #else |
| return raw_atomic64_sub_return_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_return_release() - atomic decrement with release ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_return_release() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_dec_return_release(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_return_release) |
| return arch_atomic64_dec_return_release(v); |
| #elif defined(arch_atomic64_dec_return_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_dec_return_relaxed(v); |
| #elif defined(arch_atomic64_dec_return) |
| return arch_atomic64_dec_return(v); |
| #else |
| return raw_atomic64_sub_return_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_return_relaxed() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_return_relaxed() elsewhere. |
| * |
| * Return: The updated value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_dec_return_relaxed(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_return_relaxed) |
| return arch_atomic64_dec_return_relaxed(v); |
| #elif defined(arch_atomic64_dec_return) |
| return arch_atomic64_dec_return(v); |
| #else |
| return raw_atomic64_sub_return_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_dec() - atomic decrement with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_dec() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_dec(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_dec) |
| return arch_atomic64_fetch_dec(v); |
| #elif defined(arch_atomic64_fetch_dec_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_dec_relaxed(v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_fetch_sub(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_dec_acquire() - atomic decrement with acquire ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_dec_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_dec_acquire(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_dec_acquire) |
| return arch_atomic64_fetch_dec_acquire(v); |
| #elif defined(arch_atomic64_fetch_dec_relaxed) |
| s64 ret = arch_atomic64_fetch_dec_relaxed(v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_dec) |
| return arch_atomic64_fetch_dec(v); |
| #else |
| return raw_atomic64_fetch_sub_acquire(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_dec_release() - atomic decrement with release ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_dec_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_dec_release(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_dec_release) |
| return arch_atomic64_fetch_dec_release(v); |
| #elif defined(arch_atomic64_fetch_dec_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_dec_relaxed(v); |
| #elif defined(arch_atomic64_fetch_dec) |
| return arch_atomic64_fetch_dec(v); |
| #else |
| return raw_atomic64_fetch_sub_release(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_dec_relaxed() - atomic decrement with relaxed ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_dec_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_dec_relaxed(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_dec_relaxed) |
| return arch_atomic64_fetch_dec_relaxed(v); |
| #elif defined(arch_atomic64_fetch_dec) |
| return arch_atomic64_fetch_dec(v); |
| #else |
| return raw_atomic64_fetch_sub_relaxed(1, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_and() - atomic bitwise AND with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_and() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_and(s64 i, atomic64_t *v) |
| { |
| arch_atomic64_and(i, v); |
| } |
| |
| /** |
| * raw_atomic64_fetch_and() - atomic bitwise AND with full ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_and() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_and(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_and) |
| return arch_atomic64_fetch_and(i, v); |
| #elif defined(arch_atomic64_fetch_and_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_and_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_fetch_and" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_and_acquire() - atomic bitwise AND with acquire ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_and_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_and_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_and_acquire) |
| return arch_atomic64_fetch_and_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_and_relaxed) |
| s64 ret = arch_atomic64_fetch_and_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_and) |
| return arch_atomic64_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_and_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_and_release() - atomic bitwise AND with release ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_and_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_and_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_and_release) |
| return arch_atomic64_fetch_and_release(i, v); |
| #elif defined(arch_atomic64_fetch_and_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_and_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_and) |
| return arch_atomic64_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_and_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_and_relaxed() - atomic bitwise AND with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_and_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_and_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_and_relaxed) |
| return arch_atomic64_fetch_and_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_and) |
| return arch_atomic64_fetch_and(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_and_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_andnot() - atomic bitwise AND NOT with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & ~@i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_andnot() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_andnot(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_andnot) |
| arch_atomic64_andnot(i, v); |
| #else |
| raw_atomic64_and(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_andnot() - atomic bitwise AND NOT with full ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & ~@i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_andnot() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_andnot(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_andnot) |
| return arch_atomic64_fetch_andnot(i, v); |
| #elif defined(arch_atomic64_fetch_andnot_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_andnot_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_fetch_and(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_andnot_acquire() - atomic bitwise AND NOT with acquire ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & ~@i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_andnot_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_andnot_acquire) |
| return arch_atomic64_fetch_andnot_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_andnot_relaxed) |
| s64 ret = arch_atomic64_fetch_andnot_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_andnot) |
| return arch_atomic64_fetch_andnot(i, v); |
| #else |
| return raw_atomic64_fetch_and_acquire(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_andnot_release() - atomic bitwise AND NOT with release ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & ~@i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_andnot_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_andnot_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_andnot_release) |
| return arch_atomic64_fetch_andnot_release(i, v); |
| #elif defined(arch_atomic64_fetch_andnot_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_andnot_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_andnot) |
| return arch_atomic64_fetch_andnot(i, v); |
| #else |
| return raw_atomic64_fetch_and_release(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_andnot_relaxed() - atomic bitwise AND NOT with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v & ~@i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_andnot_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_andnot_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_andnot_relaxed) |
| return arch_atomic64_fetch_andnot_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_andnot) |
| return arch_atomic64_fetch_andnot(i, v); |
| #else |
| return raw_atomic64_fetch_and_relaxed(~i, v); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_or() - atomic bitwise OR with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v | @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_or() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_or(s64 i, atomic64_t *v) |
| { |
| arch_atomic64_or(i, v); |
| } |
| |
| /** |
| * raw_atomic64_fetch_or() - atomic bitwise OR with full ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v | @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_or() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_or(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_or) |
| return arch_atomic64_fetch_or(i, v); |
| #elif defined(arch_atomic64_fetch_or_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_or_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_fetch_or" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_or_acquire() - atomic bitwise OR with acquire ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v | @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_or_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_or_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_or_acquire) |
| return arch_atomic64_fetch_or_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_or_relaxed) |
| s64 ret = arch_atomic64_fetch_or_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_or) |
| return arch_atomic64_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_or_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_or_release() - atomic bitwise OR with release ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v | @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_or_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_or_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_or_release) |
| return arch_atomic64_fetch_or_release(i, v); |
| #elif defined(arch_atomic64_fetch_or_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_or_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_or) |
| return arch_atomic64_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_or_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_or_relaxed() - atomic bitwise OR with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v | @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_or_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_or_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_or_relaxed) |
| return arch_atomic64_fetch_or_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_or) |
| return arch_atomic64_fetch_or(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_or_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_xor() - atomic bitwise XOR with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v ^ @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_xor() elsewhere. |
| * |
| * Return: Nothing. |
| */ |
| static __always_inline void |
| raw_atomic64_xor(s64 i, atomic64_t *v) |
| { |
| arch_atomic64_xor(i, v); |
| } |
| |
| /** |
| * raw_atomic64_fetch_xor() - atomic bitwise XOR with full ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v ^ @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_xor() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_xor(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_xor) |
| return arch_atomic64_fetch_xor(i, v); |
| #elif defined(arch_atomic64_fetch_xor_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_fetch_xor_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| #error "Unable to define raw_atomic64_fetch_xor" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_xor_acquire() - atomic bitwise XOR with acquire ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v ^ @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_xor_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_xor_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_xor_acquire) |
| return arch_atomic64_fetch_xor_acquire(i, v); |
| #elif defined(arch_atomic64_fetch_xor_relaxed) |
| s64 ret = arch_atomic64_fetch_xor_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_fetch_xor) |
| return arch_atomic64_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_xor_acquire" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_xor_release() - atomic bitwise XOR with release ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v ^ @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_xor_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_xor_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_xor_release) |
| return arch_atomic64_fetch_xor_release(i, v); |
| #elif defined(arch_atomic64_fetch_xor_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_fetch_xor_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_xor) |
| return arch_atomic64_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_xor_release" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_xor_relaxed() - atomic bitwise XOR with relaxed ordering |
| * @i: s64 value |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v ^ @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_xor_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_xor_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_fetch_xor_relaxed) |
| return arch_atomic64_fetch_xor_relaxed(i, v); |
| #elif defined(arch_atomic64_fetch_xor) |
| return arch_atomic64_fetch_xor(i, v); |
| #else |
| #error "Unable to define raw_atomic64_fetch_xor_relaxed" |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_xchg() - atomic exchange with full ordering |
| * @v: pointer to atomic64_t |
| * @new: s64 value to assign |
| * |
| * Atomically updates @v to @new with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_xchg() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_xchg(atomic64_t *v, s64 new) |
| { |
| #if defined(arch_atomic64_xchg) |
| return arch_atomic64_xchg(v, new); |
| #elif defined(arch_atomic64_xchg_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_xchg_relaxed(v, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_xchg(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_xchg_acquire() - atomic exchange with acquire ordering |
| * @v: pointer to atomic64_t |
| * @new: s64 value to assign |
| * |
| * Atomically updates @v to @new with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_xchg_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_xchg_acquire(atomic64_t *v, s64 new) |
| { |
| #if defined(arch_atomic64_xchg_acquire) |
| return arch_atomic64_xchg_acquire(v, new); |
| #elif defined(arch_atomic64_xchg_relaxed) |
| s64 ret = arch_atomic64_xchg_relaxed(v, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_xchg) |
| return arch_atomic64_xchg(v, new); |
| #else |
| return raw_xchg_acquire(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_xchg_release() - atomic exchange with release ordering |
| * @v: pointer to atomic64_t |
| * @new: s64 value to assign |
| * |
| * Atomically updates @v to @new with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_xchg_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_xchg_release(atomic64_t *v, s64 new) |
| { |
| #if defined(arch_atomic64_xchg_release) |
| return arch_atomic64_xchg_release(v, new); |
| #elif defined(arch_atomic64_xchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_xchg_relaxed(v, new); |
| #elif defined(arch_atomic64_xchg) |
| return arch_atomic64_xchg(v, new); |
| #else |
| return raw_xchg_release(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_xchg_relaxed() - atomic exchange with relaxed ordering |
| * @v: pointer to atomic64_t |
| * @new: s64 value to assign |
| * |
| * Atomically updates @v to @new with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_xchg_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_xchg_relaxed(atomic64_t *v, s64 new) |
| { |
| #if defined(arch_atomic64_xchg_relaxed) |
| return arch_atomic64_xchg_relaxed(v, new); |
| #elif defined(arch_atomic64_xchg) |
| return arch_atomic64_xchg(v, new); |
| #else |
| return raw_xchg_relaxed(&v->counter, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_cmpxchg() - atomic compare and exchange with full ordering |
| * @v: pointer to atomic64_t |
| * @old: s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_cmpxchg() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) |
| { |
| #if defined(arch_atomic64_cmpxchg) |
| return arch_atomic64_cmpxchg(v, old, new); |
| #elif defined(arch_atomic64_cmpxchg_relaxed) |
| s64 ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_cmpxchg_relaxed(v, old, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_cmpxchg(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_cmpxchg_acquire() - atomic compare and exchange with acquire ordering |
| * @v: pointer to atomic64_t |
| * @old: s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_cmpxchg_acquire() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new) |
| { |
| #if defined(arch_atomic64_cmpxchg_acquire) |
| return arch_atomic64_cmpxchg_acquire(v, old, new); |
| #elif defined(arch_atomic64_cmpxchg_relaxed) |
| s64 ret = arch_atomic64_cmpxchg_relaxed(v, old, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_cmpxchg) |
| return arch_atomic64_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_acquire(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_cmpxchg_release() - atomic compare and exchange with release ordering |
| * @v: pointer to atomic64_t |
| * @old: s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_cmpxchg_release() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new) |
| { |
| #if defined(arch_atomic64_cmpxchg_release) |
| return arch_atomic64_cmpxchg_release(v, old, new); |
| #elif defined(arch_atomic64_cmpxchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic64_cmpxchg) |
| return arch_atomic64_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_release(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_cmpxchg_relaxed() - atomic compare and exchange with relaxed ordering |
| * @v: pointer to atomic64_t |
| * @old: s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_cmpxchg_relaxed() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_cmpxchg_relaxed(atomic64_t *v, s64 old, s64 new) |
| { |
| #if defined(arch_atomic64_cmpxchg_relaxed) |
| return arch_atomic64_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic64_cmpxchg) |
| return arch_atomic64_cmpxchg(v, old, new); |
| #else |
| return raw_cmpxchg_relaxed(&v->counter, old, new); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_try_cmpxchg() - atomic compare and exchange with full ordering |
| * @v: pointer to atomic64_t |
| * @old: pointer to s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with full ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic64_try_cmpxchg() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new) |
| { |
| #if defined(arch_atomic64_try_cmpxchg) |
| return arch_atomic64_try_cmpxchg(v, old, new); |
| #elif defined(arch_atomic64_try_cmpxchg_relaxed) |
| bool ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_try_cmpxchg_relaxed(v, old, new); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| s64 r, o = *old; |
| r = raw_atomic64_cmpxchg(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_try_cmpxchg_acquire() - atomic compare and exchange with acquire ordering |
| * @v: pointer to atomic64_t |
| * @old: pointer to s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with acquire ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_acquire() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new) |
| { |
| #if defined(arch_atomic64_try_cmpxchg_acquire) |
| return arch_atomic64_try_cmpxchg_acquire(v, old, new); |
| #elif defined(arch_atomic64_try_cmpxchg_relaxed) |
| bool ret = arch_atomic64_try_cmpxchg_relaxed(v, old, new); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_try_cmpxchg) |
| return arch_atomic64_try_cmpxchg(v, old, new); |
| #else |
| s64 r, o = *old; |
| r = raw_atomic64_cmpxchg_acquire(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_try_cmpxchg_release() - atomic compare and exchange with release ordering |
| * @v: pointer to atomic64_t |
| * @old: pointer to s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with release ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_release() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new) |
| { |
| #if defined(arch_atomic64_try_cmpxchg_release) |
| return arch_atomic64_try_cmpxchg_release(v, old, new); |
| #elif defined(arch_atomic64_try_cmpxchg_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_try_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic64_try_cmpxchg) |
| return arch_atomic64_try_cmpxchg(v, old, new); |
| #else |
| s64 r, o = *old; |
| r = raw_atomic64_cmpxchg_release(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_try_cmpxchg_relaxed() - atomic compare and exchange with relaxed ordering |
| * @v: pointer to atomic64_t |
| * @old: pointer to s64 value to compare with |
| * @new: s64 value to assign |
| * |
| * If (@v == @old), atomically updates @v to @new with relaxed ordering. |
| * Otherwise, updates @old to the current value of @v. |
| * |
| * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_relaxed() elsewhere. |
| * |
| * Return: @true if the exchange occured, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new) |
| { |
| #if defined(arch_atomic64_try_cmpxchg_relaxed) |
| return arch_atomic64_try_cmpxchg_relaxed(v, old, new); |
| #elif defined(arch_atomic64_try_cmpxchg) |
| return arch_atomic64_try_cmpxchg(v, old, new); |
| #else |
| s64 r, o = *old; |
| r = raw_atomic64_cmpxchg_relaxed(v, o, new); |
| if (unlikely(r != o)) |
| *old = r; |
| return likely(r == o); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_sub_and_test() - atomic subtract and test if zero with full ordering |
| * @i: s64 value to subtract |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_sub_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_sub_and_test(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_sub_and_test) |
| return arch_atomic64_sub_and_test(i, v); |
| #else |
| return raw_atomic64_sub_return(i, v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_and_test() - atomic decrement and test if zero with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_dec_and_test(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_and_test) |
| return arch_atomic64_dec_and_test(v); |
| #else |
| return raw_atomic64_dec_return(v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_and_test() - atomic increment and test if zero with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_and_test() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is zero, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_inc_and_test(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_and_test) |
| return arch_atomic64_inc_and_test(v); |
| #else |
| return raw_atomic64_inc_return(v) == 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_negative() - atomic add and test if negative with full ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_negative() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_add_negative(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_negative) |
| return arch_atomic64_add_negative(i, v); |
| #elif defined(arch_atomic64_add_negative_relaxed) |
| bool ret; |
| __atomic_pre_full_fence(); |
| ret = arch_atomic64_add_negative_relaxed(i, v); |
| __atomic_post_full_fence(); |
| return ret; |
| #else |
| return raw_atomic64_add_return(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_negative_acquire() - atomic add and test if negative with acquire ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with acquire ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_negative_acquire() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_add_negative_acquire(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_negative_acquire) |
| return arch_atomic64_add_negative_acquire(i, v); |
| #elif defined(arch_atomic64_add_negative_relaxed) |
| bool ret = arch_atomic64_add_negative_relaxed(i, v); |
| __atomic_acquire_fence(); |
| return ret; |
| #elif defined(arch_atomic64_add_negative) |
| return arch_atomic64_add_negative(i, v); |
| #else |
| return raw_atomic64_add_return_acquire(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_negative_release() - atomic add and test if negative with release ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with release ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_negative_release() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_add_negative_release(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_negative_release) |
| return arch_atomic64_add_negative_release(i, v); |
| #elif defined(arch_atomic64_add_negative_relaxed) |
| __atomic_release_fence(); |
| return arch_atomic64_add_negative_relaxed(i, v); |
| #elif defined(arch_atomic64_add_negative) |
| return arch_atomic64_add_negative(i, v); |
| #else |
| return raw_atomic64_add_return_release(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_negative_relaxed() - atomic add and test if negative with relaxed ordering |
| * @i: s64 value to add |
| * @v: pointer to atomic64_t |
| * |
| * Atomically updates @v to (@v + @i) with relaxed ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_negative_relaxed() elsewhere. |
| * |
| * Return: @true if the resulting value of @v is negative, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_add_negative_relaxed(s64 i, atomic64_t *v) |
| { |
| #if defined(arch_atomic64_add_negative_relaxed) |
| return arch_atomic64_add_negative_relaxed(i, v); |
| #elif defined(arch_atomic64_add_negative) |
| return arch_atomic64_add_negative(i, v); |
| #else |
| return raw_atomic64_add_return_relaxed(i, v) < 0; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_fetch_add_unless() - atomic add unless value with full ordering |
| * @v: pointer to atomic64_t |
| * @a: s64 value to add |
| * @u: s64 value to compare with |
| * |
| * If (@v != @u), atomically updates @v to (@v + @a) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_fetch_add_unless() elsewhere. |
| * |
| * Return: The original value of @v. |
| */ |
| static __always_inline s64 |
| raw_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u) |
| { |
| #if defined(arch_atomic64_fetch_add_unless) |
| return arch_atomic64_fetch_add_unless(v, a, u); |
| #else |
| s64 c = raw_atomic64_read(v); |
| |
| do { |
| if (unlikely(c == u)) |
| break; |
| } while (!raw_atomic64_try_cmpxchg(v, &c, c + a)); |
| |
| return c; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_add_unless() - atomic add unless value with full ordering |
| * @v: pointer to atomic64_t |
| * @a: s64 value to add |
| * @u: s64 value to compare with |
| * |
| * If (@v != @u), atomically updates @v to (@v + @a) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_add_unless() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_add_unless(atomic64_t *v, s64 a, s64 u) |
| { |
| #if defined(arch_atomic64_add_unless) |
| return arch_atomic64_add_unless(v, a, u); |
| #else |
| return raw_atomic64_fetch_add_unless(v, a, u) != u; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_not_zero() - atomic increment unless zero with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * If (@v != 0), atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_not_zero() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_inc_not_zero(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_not_zero) |
| return arch_atomic64_inc_not_zero(v); |
| #else |
| return raw_atomic64_add_unless(v, 1, 0); |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_inc_unless_negative() - atomic increment unless negative with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * If (@v >= 0), atomically updates @v to (@v + 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_inc_unless_negative() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_inc_unless_negative(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_inc_unless_negative) |
| return arch_atomic64_inc_unless_negative(v); |
| #else |
| s64 c = raw_atomic64_read(v); |
| |
| do { |
| if (unlikely(c < 0)) |
| return false; |
| } while (!raw_atomic64_try_cmpxchg(v, &c, c + 1)); |
| |
| return true; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_unless_positive() - atomic decrement unless positive with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * If (@v <= 0), atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_unless_positive() elsewhere. |
| * |
| * Return: @true if @v was updated, @false otherwise. |
| */ |
| static __always_inline bool |
| raw_atomic64_dec_unless_positive(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_unless_positive) |
| return arch_atomic64_dec_unless_positive(v); |
| #else |
| s64 c = raw_atomic64_read(v); |
| |
| do { |
| if (unlikely(c > 0)) |
| return false; |
| } while (!raw_atomic64_try_cmpxchg(v, &c, c - 1)); |
| |
| return true; |
| #endif |
| } |
| |
| /** |
| * raw_atomic64_dec_if_positive() - atomic decrement if positive with full ordering |
| * @v: pointer to atomic64_t |
| * |
| * If (@v > 0), atomically updates @v to (@v - 1) with full ordering. |
| * |
| * Safe to use in noinstr code; prefer atomic64_dec_if_positive() elsewhere. |
| * |
| * Return: The old value of (@v - 1), regardless of whether @v was updated. |
| */ |
| static __always_inline s64 |
| raw_atomic64_dec_if_positive(atomic64_t *v) |
| { |
| #if defined(arch_atomic64_dec_if_positive) |
| return arch_atomic64_dec_if_positive(v); |
| #else |
| s64 dec, c = raw_atomic64_read(v); |
| |
| do { |
| dec = c - 1; |
| if (unlikely(dec < 0)) |
| break; |
| } while (!raw_atomic64_try_cmpxchg(v, &c, dec)); |
| |
| return dec; |
| #endif |
| } |
| |
| #endif /* _LINUX_ATOMIC_FALLBACK_H */ |
| // f8888b25626bea006e7f11f7add7cecc33d0fa2e |