bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-07-22 01:43:37 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
bianbu-linux-6.6/include/linux/atomic/atomic-arch-fallback.h
Mark Rutland dc1b4df09a atomics: Fix atomic64_{read_acquire,set_release} fallbacks 
Arnd reports that on 32-bit architectures, the fallbacks for
atomic64_read_acquire() and atomic64_set_release() are broken as they
use smp_load_acquire() and smp_store_release() respectively, which do
not work on types larger than the native word size.

Since those contain compiletime_assert_atomic_type(), any attempt to use
those fallbacks will result in a build-time error. e.g. with the
following added to arch/arm/kernel/setup.c:

| void test_atomic64(atomic64_t *v)
| {
|        atomic64_set_release(v, 5);
|        atomic64_read_acquire(v);
| }

The compiler will complain as follows:

| In file included from <command-line>:
| In function 'arch_atomic64_set_release',
|     inlined from 'test_atomic64' at ./include/linux/atomic/atomic-instrumented.h:669:2:
| ././include/linux/compiler_types.h:346:38: error: call to '__compiletime_assert_9' declared with attribute error: Need native word sized stores/loads for atomicity.
|   346 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
|       |                                      ^
| ././include/linux/compiler_types.h:327:4: note: in definition of macro '__compiletime_assert'
|   327 |    prefix ## suffix();    \
|       |    ^~~~~~
| ././include/linux/compiler_types.h:346:2: note: in expansion of macro '_compiletime_assert'
|   346 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
|       |  ^~~~~~~~~~~~~~~~~~~
| ././include/linux/compiler_types.h:349:2: note: in expansion of macro 'compiletime_assert'
|   349 |  compiletime_assert(__native_word(t),    \
|       |  ^~~~~~~~~~~~~~~~~~
| ./include/asm-generic/barrier.h:133:2: note: in expansion of macro 'compiletime_assert_atomic_type'
|   133 |  compiletime_assert_atomic_type(*p);    \
|       |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| ./include/asm-generic/barrier.h:164:55: note: in expansion of macro '__smp_store_release'
|   164 | #define smp_store_release(p, v) do { kcsan_release(); __smp_store_release(p, v); } while (0)
|       |                                                       ^~~~~~~~~~~~~~~~~~~
| ./include/linux/atomic/atomic-arch-fallback.h:1270:2: note: in expansion of macro 'smp_store_release'
|  1270 |  smp_store_release(&(v)->counter, i);
|       |  ^~~~~~~~~~~~~~~~~
| make[2]: *** [scripts/Makefile.build:288: arch/arm/kernel/setup.o] Error 1
| make[1]: *** [scripts/Makefile.build:550: arch/arm/kernel] Error 2
| make: *** [Makefile:1831: arch/arm] Error 2

Fix this by only using smp_load_acquire() and smp_store_release() for
native atomic types, and otherwise falling back to the regular barriers
necessary for acquire/release semantics, as we do in the more generic
acquire and release fallbacks.

Since the fallback templates are used to generate the atomic64_*() and
atomic_*() operations, the __native_word() check is added to both. For
the atomic_*() operations, which are always 32-bit, the __native_word()
check is redundant but not harmful, as it is always true.

For the example above this works as expected on 32-bit, e.g. for arm
multi_v7_defconfig:

| <test_atomic64>:
|         push    {r4, r5}
|         dmb     ish
|         pldw    [r0]
|         mov     r2, #5
|         mov     r3, #0
|         ldrexd  r4, [r0]
|         strexd  r4, r2, [r0]
|         teq     r4, #0
|         bne     484 <test_atomic64+0x14>
|         ldrexd  r2, [r0]
|         dmb     ish
|         pop     {r4, r5}
|         bx      lr

... and also on 64-bit, e.g. for arm64 defconfig:

| <test_atomic64>:
|         bti     c
|         paciasp
|         mov     x1, #0x5
|         stlr    x1, [x0]
|         ldar    x0, [x0]
|         autiasp
|         ret

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20220207101943.439825-1-mark.rutland@arm.com
2022-02-11 12:13:56 +01:00

2389 lines
62 KiB
C
Raw Blame History

// 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>
#ifndef arch_xchg_relaxed
#define arch_xchg_acquire arch_xchg
#define arch_xchg_release arch_xchg
#define arch_xchg_relaxed arch_xchg
#else /* arch_xchg_relaxed */
#ifndef arch_xchg_acquire
#define arch_xchg_acquire(...) \
__atomic_op_acquire(arch_xchg, __VA_ARGS__)
#endif
#ifndef arch_xchg_release
#define arch_xchg_release(...) \
__atomic_op_release(arch_xchg, __VA_ARGS__)
#endif
#ifndef arch_xchg
#define arch_xchg(...) \
__atomic_op_fence(arch_xchg, __VA_ARGS__)
#endif
#endif /* arch_xchg_relaxed */
#ifndef arch_cmpxchg_relaxed
#define arch_cmpxchg_acquire arch_cmpxchg
#define arch_cmpxchg_release arch_cmpxchg
#define arch_cmpxchg_relaxed arch_cmpxchg
#else /* arch_cmpxchg_relaxed */
#ifndef arch_cmpxchg_acquire
#define arch_cmpxchg_acquire(...) \
__atomic_op_acquire(arch_cmpxchg, __VA_ARGS__)
#endif
#ifndef arch_cmpxchg_release
#define arch_cmpxchg_release(...) \
__atomic_op_release(arch_cmpxchg, __VA_ARGS__)
#endif
#ifndef arch_cmpxchg
#define arch_cmpxchg(...) \
__atomic_op_fence(arch_cmpxchg, __VA_ARGS__)
#endif
#endif /* arch_cmpxchg_relaxed */
#ifndef arch_cmpxchg64_relaxed
#define arch_cmpxchg64_acquire arch_cmpxchg64
#define arch_cmpxchg64_release arch_cmpxchg64
#define arch_cmpxchg64_relaxed arch_cmpxchg64
#else /* arch_cmpxchg64_relaxed */
#ifndef arch_cmpxchg64_acquire
#define arch_cmpxchg64_acquire(...) \
__atomic_op_acquire(arch_cmpxchg64, __VA_ARGS__)
#endif
#ifndef arch_cmpxchg64_release
#define arch_cmpxchg64_release(...) \
__atomic_op_release(arch_cmpxchg64, __VA_ARGS__)
#endif
#ifndef arch_cmpxchg64
#define arch_cmpxchg64(...) \
__atomic_op_fence(arch_cmpxchg64, __VA_ARGS__)
#endif
#endif /* arch_cmpxchg64_relaxed */
#ifndef arch_try_cmpxchg_relaxed
#ifdef arch_try_cmpxchg
#define arch_try_cmpxchg_acquire arch_try_cmpxchg
#define arch_try_cmpxchg_release arch_try_cmpxchg
#define arch_try_cmpxchg_relaxed arch_try_cmpxchg
#endif /* arch_try_cmpxchg */
#ifndef arch_try_cmpxchg
#define arch_try_cmpxchg(_ptr, _oldp, _new) \
({ \
typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
___r = arch_cmpxchg((_ptr), ___o, (_new)); \
if (unlikely(___r != ___o)) \
*___op = ___r; \
likely(___r == ___o); \
})
#endif /* arch_try_cmpxchg */
#ifndef arch_try_cmpxchg_acquire
#define arch_try_cmpxchg_acquire(_ptr, _oldp, _new) \
({ \
typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
___r = arch_cmpxchg_acquire((_ptr), ___o, (_new)); \
if (unlikely(___r != ___o)) \
*___op = ___r; \
likely(___r == ___o); \
})
#endif /* arch_try_cmpxchg_acquire */
#ifndef arch_try_cmpxchg_release
#define arch_try_cmpxchg_release(_ptr, _oldp, _new) \
({ \
typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
___r = arch_cmpxchg_release((_ptr), ___o, (_new)); \
if (unlikely(___r != ___o)) \
*___op = ___r; \
likely(___r == ___o); \
})
#endif /* arch_try_cmpxchg_release */
#ifndef arch_try_cmpxchg_relaxed
#define arch_try_cmpxchg_relaxed(_ptr, _oldp, _new) \
({ \
typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
___r = arch_cmpxchg_relaxed((_ptr), ___o, (_new)); \
if (unlikely(___r != ___o)) \
*___op = ___r; \
likely(___r == ___o); \
})
#endif /* arch_try_cmpxchg_relaxed */
#else /* arch_try_cmpxchg_relaxed */
#ifndef arch_try_cmpxchg_acquire
#define arch_try_cmpxchg_acquire(...) \
__atomic_op_acquire(arch_try_cmpxchg, __VA_ARGS__)
#endif
#ifndef arch_try_cmpxchg_release
#define arch_try_cmpxchg_release(...) \
__atomic_op_release(arch_try_cmpxchg, __VA_ARGS__)
#endif
#ifndef arch_try_cmpxchg
#define arch_try_cmpxchg(...) \
__atomic_op_fence(arch_try_cmpxchg, __VA_ARGS__)
#endif
#endif /* arch_try_cmpxchg_relaxed */
#ifndef arch_atomic_read_acquire
static __always_inline int
arch_atomic_read_acquire(const atomic_t *v)
{
int ret;
if (__native_word(atomic_t)) {
ret = smp_load_acquire(&(v)->counter);
} else {
ret = arch_atomic_read(v);
__atomic_acquire_fence();
}
return ret;
}
#define arch_atomic_read_acquire arch_atomic_read_acquire
#endif
#ifndef arch_atomic_set_release
static __always_inline void
arch_atomic_set_release(atomic_t *v, int i)
{
if (__native_word(atomic_t)) {
smp_store_release(&(v)->counter, i);
} else {
__atomic_release_fence();
arch_atomic_set(v, i);
}
}
#define arch_atomic_set_release arch_atomic_set_release
#endif
#ifndef arch_atomic_add_return_relaxed
#define arch_atomic_add_return_acquire arch_atomic_add_return
#define arch_atomic_add_return_release arch_atomic_add_return
#define arch_atomic_add_return_relaxed arch_atomic_add_return
#else /* arch_atomic_add_return_relaxed */
#ifndef arch_atomic_add_return_acquire
static __always_inline int
arch_atomic_add_return_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_add_return_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_add_return_acquire arch_atomic_add_return_acquire
#endif
#ifndef arch_atomic_add_return_release
static __always_inline int
arch_atomic_add_return_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_add_return_relaxed(i, v);
}
#define arch_atomic_add_return_release arch_atomic_add_return_release
#endif
#ifndef arch_atomic_add_return
static __always_inline int
arch_atomic_add_return(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_add_return_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_add_return arch_atomic_add_return
#endif
#endif /* arch_atomic_add_return_relaxed */
#ifndef arch_atomic_fetch_add_relaxed
#define arch_atomic_fetch_add_acquire arch_atomic_fetch_add
#define arch_atomic_fetch_add_release arch_atomic_fetch_add
#define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add
#else /* arch_atomic_fetch_add_relaxed */
#ifndef arch_atomic_fetch_add_acquire
static __always_inline int
arch_atomic_fetch_add_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_add_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire
#endif
#ifndef arch_atomic_fetch_add_release
static __always_inline int
arch_atomic_fetch_add_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_add_relaxed(i, v);
}
#define arch_atomic_fetch_add_release arch_atomic_fetch_add_release
#endif
#ifndef arch_atomic_fetch_add
static __always_inline int
arch_atomic_fetch_add(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_add_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_add arch_atomic_fetch_add
#endif
#endif /* arch_atomic_fetch_add_relaxed */
#ifndef arch_atomic_sub_return_relaxed
#define arch_atomic_sub_return_acquire arch_atomic_sub_return
#define arch_atomic_sub_return_release arch_atomic_sub_return
#define arch_atomic_sub_return_relaxed arch_atomic_sub_return
#else /* arch_atomic_sub_return_relaxed */
#ifndef arch_atomic_sub_return_acquire
static __always_inline int
arch_atomic_sub_return_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_sub_return_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire
#endif
#ifndef arch_atomic_sub_return_release
static __always_inline int
arch_atomic_sub_return_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_sub_return_relaxed(i, v);
}
#define arch_atomic_sub_return_release arch_atomic_sub_return_release
#endif
#ifndef arch_atomic_sub_return
static __always_inline int
arch_atomic_sub_return(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_sub_return_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_sub_return arch_atomic_sub_return
#endif
#endif /* arch_atomic_sub_return_relaxed */
#ifndef arch_atomic_fetch_sub_relaxed
#define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub
#define arch_atomic_fetch_sub_release arch_atomic_fetch_sub
#define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub
#else /* arch_atomic_fetch_sub_relaxed */
#ifndef arch_atomic_fetch_sub_acquire
static __always_inline int
arch_atomic_fetch_sub_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_sub_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire
#endif
#ifndef arch_atomic_fetch_sub_release
static __always_inline int
arch_atomic_fetch_sub_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_sub_relaxed(i, v);
}
#define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release
#endif
#ifndef arch_atomic_fetch_sub
static __always_inline int
arch_atomic_fetch_sub(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_sub_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_sub arch_atomic_fetch_sub
#endif
#endif /* arch_atomic_fetch_sub_relaxed */
#ifndef arch_atomic_inc
static __always_inline void
arch_atomic_inc(atomic_t *v)
{
arch_atomic_add(1, v);
}
#define arch_atomic_inc arch_atomic_inc
#endif
#ifndef arch_atomic_inc_return_relaxed
#ifdef arch_atomic_inc_return
#define arch_atomic_inc_return_acquire arch_atomic_inc_return
#define arch_atomic_inc_return_release arch_atomic_inc_return
#define arch_atomic_inc_return_relaxed arch_atomic_inc_return
#endif /* arch_atomic_inc_return */
#ifndef arch_atomic_inc_return
static __always_inline int
arch_atomic_inc_return(atomic_t *v)
{
return arch_atomic_add_return(1, v);
}
#define arch_atomic_inc_return arch_atomic_inc_return
#endif
#ifndef arch_atomic_inc_return_acquire
static __always_inline int
arch_atomic_inc_return_acquire(atomic_t *v)
{
return arch_atomic_add_return_acquire(1, v);
}
#define arch_atomic_inc_return_acquire arch_atomic_inc_return_acquire
#endif
#ifndef arch_atomic_inc_return_release
static __always_inline int
arch_atomic_inc_return_release(atomic_t *v)
{
return arch_atomic_add_return_release(1, v);
}
#define arch_atomic_inc_return_release arch_atomic_inc_return_release
#endif
#ifndef arch_atomic_inc_return_relaxed
static __always_inline int
arch_atomic_inc_return_relaxed(atomic_t *v)
{
return arch_atomic_add_return_relaxed(1, v);
}
#define arch_atomic_inc_return_relaxed arch_atomic_inc_return_relaxed
#endif
#else /* arch_atomic_inc_return_relaxed */
#ifndef arch_atomic_inc_return_acquire
static __always_inline int
arch_atomic_inc_return_acquire(atomic_t *v)
{
int ret = arch_atomic_inc_return_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_inc_return_acquire arch_atomic_inc_return_acquire
#endif
#ifndef arch_atomic_inc_return_release
static __always_inline int
arch_atomic_inc_return_release(atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_inc_return_relaxed(v);
}
#define arch_atomic_inc_return_release arch_atomic_inc_return_release
#endif
#ifndef arch_atomic_inc_return
static __always_inline int
arch_atomic_inc_return(atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_inc_return_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_inc_return arch_atomic_inc_return
#endif
#endif /* arch_atomic_inc_return_relaxed */
#ifndef arch_atomic_fetch_inc_relaxed
#ifdef arch_atomic_fetch_inc
#define arch_atomic_fetch_inc_acquire arch_atomic_fetch_inc
#define arch_atomic_fetch_inc_release arch_atomic_fetch_inc
#define arch_atomic_fetch_inc_relaxed arch_atomic_fetch_inc
#endif /* arch_atomic_fetch_inc */
#ifndef arch_atomic_fetch_inc
static __always_inline int
arch_atomic_fetch_inc(atomic_t *v)
{
return arch_atomic_fetch_add(1, v);
}
#define arch_atomic_fetch_inc arch_atomic_fetch_inc
#endif
#ifndef arch_atomic_fetch_inc_acquire
static __always_inline int
arch_atomic_fetch_inc_acquire(atomic_t *v)
{
return arch_atomic_fetch_add_acquire(1, v);
}
#define arch_atomic_fetch_inc_acquire arch_atomic_fetch_inc_acquire
#endif
#ifndef arch_atomic_fetch_inc_release
static __always_inline int
arch_atomic_fetch_inc_release(atomic_t *v)
{
return arch_atomic_fetch_add_release(1, v);
}
#define arch_atomic_fetch_inc_release arch_atomic_fetch_inc_release
#endif
#ifndef arch_atomic_fetch_inc_relaxed
static __always_inline int
arch_atomic_fetch_inc_relaxed(atomic_t *v)
{
return arch_atomic_fetch_add_relaxed(1, v);
}
#define arch_atomic_fetch_inc_relaxed arch_atomic_fetch_inc_relaxed
#endif
#else /* arch_atomic_fetch_inc_relaxed */
#ifndef arch_atomic_fetch_inc_acquire
static __always_inline int
arch_atomic_fetch_inc_acquire(atomic_t *v)
{
int ret = arch_atomic_fetch_inc_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_inc_acquire arch_atomic_fetch_inc_acquire
#endif
#ifndef arch_atomic_fetch_inc_release
static __always_inline int
arch_atomic_fetch_inc_release(atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_inc_relaxed(v);
}
#define arch_atomic_fetch_inc_release arch_atomic_fetch_inc_release
#endif
#ifndef arch_atomic_fetch_inc
static __always_inline int
arch_atomic_fetch_inc(atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_inc_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_inc arch_atomic_fetch_inc
#endif
#endif /* arch_atomic_fetch_inc_relaxed */
#ifndef arch_atomic_dec
static __always_inline void
arch_atomic_dec(atomic_t *v)
{
arch_atomic_sub(1, v);
}
#define arch_atomic_dec arch_atomic_dec
#endif
#ifndef arch_atomic_dec_return_relaxed
#ifdef arch_atomic_dec_return
#define arch_atomic_dec_return_acquire arch_atomic_dec_return
#define arch_atomic_dec_return_release arch_atomic_dec_return
#define arch_atomic_dec_return_relaxed arch_atomic_dec_return
#endif /* arch_atomic_dec_return */
#ifndef arch_atomic_dec_return
static __always_inline int
arch_atomic_dec_return(atomic_t *v)
{
return arch_atomic_sub_return(1, v);
}
#define arch_atomic_dec_return arch_atomic_dec_return
#endif
#ifndef arch_atomic_dec_return_acquire
static __always_inline int
arch_atomic_dec_return_acquire(atomic_t *v)
{
return arch_atomic_sub_return_acquire(1, v);
}
#define arch_atomic_dec_return_acquire arch_atomic_dec_return_acquire
#endif
#ifndef arch_atomic_dec_return_release
static __always_inline int
arch_atomic_dec_return_release(atomic_t *v)
{
return arch_atomic_sub_return_release(1, v);
}
#define arch_atomic_dec_return_release arch_atomic_dec_return_release
#endif
#ifndef arch_atomic_dec_return_relaxed
static __always_inline int
arch_atomic_dec_return_relaxed(atomic_t *v)
{
return arch_atomic_sub_return_relaxed(1, v);
}
#define arch_atomic_dec_return_relaxed arch_atomic_dec_return_relaxed
#endif
#else /* arch_atomic_dec_return_relaxed */
#ifndef arch_atomic_dec_return_acquire
static __always_inline int
arch_atomic_dec_return_acquire(atomic_t *v)
{
int ret = arch_atomic_dec_return_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_dec_return_acquire arch_atomic_dec_return_acquire
#endif
#ifndef arch_atomic_dec_return_release
static __always_inline int
arch_atomic_dec_return_release(atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_dec_return_relaxed(v);
}
#define arch_atomic_dec_return_release arch_atomic_dec_return_release
#endif
#ifndef arch_atomic_dec_return
static __always_inline int
arch_atomic_dec_return(atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_dec_return_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_dec_return arch_atomic_dec_return
#endif
#endif /* arch_atomic_dec_return_relaxed */
#ifndef arch_atomic_fetch_dec_relaxed
#ifdef arch_atomic_fetch_dec
#define arch_atomic_fetch_dec_acquire arch_atomic_fetch_dec
#define arch_atomic_fetch_dec_release arch_atomic_fetch_dec
#define arch_atomic_fetch_dec_relaxed arch_atomic_fetch_dec
#endif /* arch_atomic_fetch_dec */
#ifndef arch_atomic_fetch_dec
static __always_inline int
arch_atomic_fetch_dec(atomic_t *v)
{
return arch_atomic_fetch_sub(1, v);
}
#define arch_atomic_fetch_dec arch_atomic_fetch_dec
#endif
#ifndef arch_atomic_fetch_dec_acquire
static __always_inline int
arch_atomic_fetch_dec_acquire(atomic_t *v)
{
return arch_atomic_fetch_sub_acquire(1, v);
}
#define arch_atomic_fetch_dec_acquire arch_atomic_fetch_dec_acquire
#endif
#ifndef arch_atomic_fetch_dec_release
static __always_inline int
arch_atomic_fetch_dec_release(atomic_t *v)
{
return arch_atomic_fetch_sub_release(1, v);
}
#define arch_atomic_fetch_dec_release arch_atomic_fetch_dec_release
#endif
#ifndef arch_atomic_fetch_dec_relaxed
static __always_inline int
arch_atomic_fetch_dec_relaxed(atomic_t *v)
{
return arch_atomic_fetch_sub_relaxed(1, v);
}
#define arch_atomic_fetch_dec_relaxed arch_atomic_fetch_dec_relaxed
#endif
#else /* arch_atomic_fetch_dec_relaxed */
#ifndef arch_atomic_fetch_dec_acquire
static __always_inline int
arch_atomic_fetch_dec_acquire(atomic_t *v)
{
int ret = arch_atomic_fetch_dec_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_dec_acquire arch_atomic_fetch_dec_acquire
#endif
#ifndef arch_atomic_fetch_dec_release
static __always_inline int
arch_atomic_fetch_dec_release(atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_dec_relaxed(v);
}
#define arch_atomic_fetch_dec_release arch_atomic_fetch_dec_release
#endif
#ifndef arch_atomic_fetch_dec
static __always_inline int
arch_atomic_fetch_dec(atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_dec_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_dec arch_atomic_fetch_dec
#endif
#endif /* arch_atomic_fetch_dec_relaxed */
#ifndef arch_atomic_fetch_and_relaxed
#define arch_atomic_fetch_and_acquire arch_atomic_fetch_and
#define arch_atomic_fetch_and_release arch_atomic_fetch_and
#define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and
#else /* arch_atomic_fetch_and_relaxed */
#ifndef arch_atomic_fetch_and_acquire
static __always_inline int
arch_atomic_fetch_and_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_and_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire
#endif
#ifndef arch_atomic_fetch_and_release
static __always_inline int
arch_atomic_fetch_and_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_and_relaxed(i, v);
}
#define arch_atomic_fetch_and_release arch_atomic_fetch_and_release
#endif
#ifndef arch_atomic_fetch_and
static __always_inline int
arch_atomic_fetch_and(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_and_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_and arch_atomic_fetch_and
#endif
#endif /* arch_atomic_fetch_and_relaxed */
#ifndef arch_atomic_andnot
static __always_inline void
arch_atomic_andnot(int i, atomic_t *v)
{
arch_atomic_and(~i, v);
}
#define arch_atomic_andnot arch_atomic_andnot
#endif
#ifndef arch_atomic_fetch_andnot_relaxed
#ifdef arch_atomic_fetch_andnot
#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot
#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot
#define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot
#endif /* arch_atomic_fetch_andnot */
#ifndef arch_atomic_fetch_andnot
static __always_inline int
arch_atomic_fetch_andnot(int i, atomic_t *v)
{
return arch_atomic_fetch_and(~i, v);
}
#define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
#endif
#ifndef arch_atomic_fetch_andnot_acquire
static __always_inline int
arch_atomic_fetch_andnot_acquire(int i, atomic_t *v)
{
return arch_atomic_fetch_and_acquire(~i, v);
}
#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
#endif
#ifndef arch_atomic_fetch_andnot_release
static __always_inline int
arch_atomic_fetch_andnot_release(int i, atomic_t *v)
{
return arch_atomic_fetch_and_release(~i, v);
}
#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
#endif
#ifndef arch_atomic_fetch_andnot_relaxed
static __always_inline int
arch_atomic_fetch_andnot_relaxed(int i, atomic_t *v)
{
return arch_atomic_fetch_and_relaxed(~i, v);
}
#define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed
#endif
#else /* arch_atomic_fetch_andnot_relaxed */
#ifndef arch_atomic_fetch_andnot_acquire
static __always_inline int
arch_atomic_fetch_andnot_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_andnot_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
#endif
#ifndef arch_atomic_fetch_andnot_release
static __always_inline int
arch_atomic_fetch_andnot_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_andnot_relaxed(i, v);
}
#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
#endif
#ifndef arch_atomic_fetch_andnot
static __always_inline int
arch_atomic_fetch_andnot(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_andnot_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
#endif
#endif /* arch_atomic_fetch_andnot_relaxed */
#ifndef arch_atomic_fetch_or_relaxed
#define arch_atomic_fetch_or_acquire arch_atomic_fetch_or
#define arch_atomic_fetch_or_release arch_atomic_fetch_or
#define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or
#else /* arch_atomic_fetch_or_relaxed */
#ifndef arch_atomic_fetch_or_acquire
static __always_inline int
arch_atomic_fetch_or_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_or_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
#endif
#ifndef arch_atomic_fetch_or_release
static __always_inline int
arch_atomic_fetch_or_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_or_relaxed(i, v);
}
#define arch_atomic_fetch_or_release arch_atomic_fetch_or_release
#endif
#ifndef arch_atomic_fetch_or
static __always_inline int
arch_atomic_fetch_or(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_or_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_or arch_atomic_fetch_or
#endif
#endif /* arch_atomic_fetch_or_relaxed */
#ifndef arch_atomic_fetch_xor_relaxed
#define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor
#define arch_atomic_fetch_xor_release arch_atomic_fetch_xor
#define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor
#else /* arch_atomic_fetch_xor_relaxed */
#ifndef arch_atomic_fetch_xor_acquire
static __always_inline int
arch_atomic_fetch_xor_acquire(int i, atomic_t *v)
{
int ret = arch_atomic_fetch_xor_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire
#endif
#ifndef arch_atomic_fetch_xor_release
static __always_inline int
arch_atomic_fetch_xor_release(int i, atomic_t *v)
{
__atomic_release_fence();
return arch_atomic_fetch_xor_relaxed(i, v);
}
#define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release
#endif
#ifndef arch_atomic_fetch_xor
static __always_inline int
arch_atomic_fetch_xor(int i, atomic_t *v)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_fetch_xor_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_fetch_xor arch_atomic_fetch_xor
#endif
#endif /* arch_atomic_fetch_xor_relaxed */
#ifndef arch_atomic_xchg_relaxed
#define arch_atomic_xchg_acquire arch_atomic_xchg
#define arch_atomic_xchg_release arch_atomic_xchg
#define arch_atomic_xchg_relaxed arch_atomic_xchg
#else /* arch_atomic_xchg_relaxed */
#ifndef arch_atomic_xchg_acquire
static __always_inline int
arch_atomic_xchg_acquire(atomic_t *v, int i)
{
int ret = arch_atomic_xchg_relaxed(v, i);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_xchg_acquire arch_atomic_xchg_acquire
#endif
#ifndef arch_atomic_xchg_release
static __always_inline int
arch_atomic_xchg_release(atomic_t *v, int i)
{
__atomic_release_fence();
return arch_atomic_xchg_relaxed(v, i);
}
#define arch_atomic_xchg_release arch_atomic_xchg_release
#endif
#ifndef arch_atomic_xchg
static __always_inline int
arch_atomic_xchg(atomic_t *v, int i)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_xchg_relaxed(v, i);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_xchg arch_atomic_xchg
#endif
#endif /* arch_atomic_xchg_relaxed */
#ifndef arch_atomic_cmpxchg_relaxed
#define arch_atomic_cmpxchg_acquire arch_atomic_cmpxchg
#define arch_atomic_cmpxchg_release arch_atomic_cmpxchg
#define arch_atomic_cmpxchg_relaxed arch_atomic_cmpxchg
#else /* arch_atomic_cmpxchg_relaxed */
#ifndef arch_atomic_cmpxchg_acquire
static __always_inline int
arch_atomic_cmpxchg_acquire(atomic_t *v, int old, int new)
{
int ret = arch_atomic_cmpxchg_relaxed(v, old, new);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_cmpxchg_acquire arch_atomic_cmpxchg_acquire
#endif
#ifndef arch_atomic_cmpxchg_release
static __always_inline int
arch_atomic_cmpxchg_release(atomic_t *v, int old, int new)
{
__atomic_release_fence();
return arch_atomic_cmpxchg_relaxed(v, old, new);
}
#define arch_atomic_cmpxchg_release arch_atomic_cmpxchg_release
#endif
#ifndef arch_atomic_cmpxchg
static __always_inline int
arch_atomic_cmpxchg(atomic_t *v, int old, int new)
{
int ret;
__atomic_pre_full_fence();
ret = arch_atomic_cmpxchg_relaxed(v, old, new);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_cmpxchg arch_atomic_cmpxchg
#endif
#endif /* arch_atomic_cmpxchg_relaxed */
#ifndef arch_atomic_try_cmpxchg_relaxed
#ifdef arch_atomic_try_cmpxchg
#define arch_atomic_try_cmpxchg_acquire arch_atomic_try_cmpxchg
#define arch_atomic_try_cmpxchg_release arch_atomic_try_cmpxchg
#define arch_atomic_try_cmpxchg_relaxed arch_atomic_try_cmpxchg
#endif /* arch_atomic_try_cmpxchg */
#ifndef arch_atomic_try_cmpxchg
static __always_inline bool
arch_atomic_try_cmpxchg(atomic_t *v, int *old, int new)
{
int r, o = *old;
r = arch_atomic_cmpxchg(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic_try_cmpxchg arch_atomic_try_cmpxchg
#endif
#ifndef arch_atomic_try_cmpxchg_acquire
static __always_inline bool
arch_atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
{
int r, o = *old;
r = arch_atomic_cmpxchg_acquire(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic_try_cmpxchg_acquire arch_atomic_try_cmpxchg_acquire
#endif
#ifndef arch_atomic_try_cmpxchg_release
static __always_inline bool
arch_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
{
int r, o = *old;
r = arch_atomic_cmpxchg_release(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic_try_cmpxchg_release arch_atomic_try_cmpxchg_release
#endif
#ifndef arch_atomic_try_cmpxchg_relaxed
static __always_inline bool
arch_atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
{
int r, o = *old;
r = arch_atomic_cmpxchg_relaxed(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic_try_cmpxchg_relaxed arch_atomic_try_cmpxchg_relaxed
#endif
#else /* arch_atomic_try_cmpxchg_relaxed */
#ifndef arch_atomic_try_cmpxchg_acquire
static __always_inline bool
arch_atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
{
bool ret = arch_atomic_try_cmpxchg_relaxed(v, old, new);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic_try_cmpxchg_acquire arch_atomic_try_cmpxchg_acquire
#endif
#ifndef arch_atomic_try_cmpxchg_release
static __always_inline bool
arch_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
{
__atomic_release_fence();
return arch_atomic_try_cmpxchg_relaxed(v, old, new);
}
#define arch_atomic_try_cmpxchg_release arch_atomic_try_cmpxchg_release
#endif
#ifndef arch_atomic_try_cmpxchg
static __always_inline bool
arch_atomic_try_cmpxchg(atomic_t *v, int *old, int new)
{
bool ret;
__atomic_pre_full_fence();
ret = arch_atomic_try_cmpxchg_relaxed(v, old, new);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic_try_cmpxchg arch_atomic_try_cmpxchg
#endif
#endif /* arch_atomic_try_cmpxchg_relaxed */
#ifndef arch_atomic_sub_and_test
/**
* arch_atomic_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type atomic_t
*
* Atomically subtracts @i from @v and returns
* true if the result is zero, or false for all
* other cases.
*/
static __always_inline bool
arch_atomic_sub_and_test(int i, atomic_t *v)
{
return arch_atomic_sub_return(i, v) == 0;
}
#define arch_atomic_sub_and_test arch_atomic_sub_and_test
#endif
#ifndef arch_atomic_dec_and_test
/**
* arch_atomic_dec_and_test - decrement and test
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
static __always_inline bool
arch_atomic_dec_and_test(atomic_t *v)
{
return arch_atomic_dec_return(v) == 0;
}
#define arch_atomic_dec_and_test arch_atomic_dec_and_test
#endif
#ifndef arch_atomic_inc_and_test
/**
* arch_atomic_inc_and_test - increment and test
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
static __always_inline bool
arch_atomic_inc_and_test(atomic_t *v)
{
return arch_atomic_inc_return(v) == 0;
}
#define arch_atomic_inc_and_test arch_atomic_inc_and_test
#endif
#ifndef arch_atomic_add_negative
/**
* arch_atomic_add_negative - add and test if negative
* @i: integer value to add
* @v: pointer of type atomic_t
*
* Atomically adds @i to @v and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
static __always_inline bool
arch_atomic_add_negative(int i, atomic_t *v)
{
return arch_atomic_add_return(i, v) < 0;
}
#define arch_atomic_add_negative arch_atomic_add_negative
#endif
#ifndef arch_atomic_fetch_add_unless
/**
* arch_atomic_fetch_add_unless - add unless the number is already a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns original value of @v
*/
static __always_inline int
arch_atomic_fetch_add_unless(atomic_t *v, int a, int u)
{
int c = arch_atomic_read(v);
do {
if (unlikely(c == u))
break;
} while (!arch_atomic_try_cmpxchg(v, &c, c + a));
return c;
}
#define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless
#endif
#ifndef arch_atomic_add_unless
/**
* arch_atomic_add_unless - add unless the number is already a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, if @v was not already @u.
* Returns true if the addition was done.
*/
static __always_inline bool
arch_atomic_add_unless(atomic_t *v, int a, int u)
{
return arch_atomic_fetch_add_unless(v, a, u) != u;
}
#define arch_atomic_add_unless arch_atomic_add_unless
#endif
#ifndef arch_atomic_inc_not_zero
/**
* arch_atomic_inc_not_zero - increment unless the number is zero
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1, if @v is non-zero.
* Returns true if the increment was done.
*/
static __always_inline bool
arch_atomic_inc_not_zero(atomic_t *v)
{
return arch_atomic_add_unless(v, 1, 0);
}
#define arch_atomic_inc_not_zero arch_atomic_inc_not_zero
#endif
#ifndef arch_atomic_inc_unless_negative
static __always_inline bool
arch_atomic_inc_unless_negative(atomic_t *v)
{
int c = arch_atomic_read(v);
do {
if (unlikely(c < 0))
return false;
} while (!arch_atomic_try_cmpxchg(v, &c, c + 1));
return true;
}
#define arch_atomic_inc_unless_negative arch_atomic_inc_unless_negative
#endif
#ifndef arch_atomic_dec_unless_positive
static __always_inline bool
arch_atomic_dec_unless_positive(atomic_t *v)
{
int c = arch_atomic_read(v);
do {
if (unlikely(c > 0))
return false;
} while (!arch_atomic_try_cmpxchg(v, &c, c - 1));
return true;
}
#define arch_atomic_dec_unless_positive arch_atomic_dec_unless_positive
#endif
#ifndef arch_atomic_dec_if_positive
static __always_inline int
arch_atomic_dec_if_positive(atomic_t *v)
{
int dec, c = arch_atomic_read(v);
do {
dec = c - 1;
if (unlikely(dec < 0))
break;
} while (!arch_atomic_try_cmpxchg(v, &c, dec));
return dec;
}
#define arch_atomic_dec_if_positive arch_atomic_dec_if_positive
#endif
#ifdef CONFIG_GENERIC_ATOMIC64
#include <asm-generic/atomic64.h>
#endif
#ifndef arch_atomic64_read_acquire
static __always_inline s64
arch_atomic64_read_acquire(const atomic64_t *v)
{
s64 ret;
if (__native_word(atomic64_t)) {
ret = smp_load_acquire(&(v)->counter);
} else {
ret = arch_atomic64_read(v);
__atomic_acquire_fence();
}
return ret;
}
#define arch_atomic64_read_acquire arch_atomic64_read_acquire
#endif
#ifndef arch_atomic64_set_release
static __always_inline void
arch_atomic64_set_release(atomic64_t *v, s64 i)
{
if (__native_word(atomic64_t)) {
smp_store_release(&(v)->counter, i);
} else {
__atomic_release_fence();
arch_atomic64_set(v, i);
}
}
#define arch_atomic64_set_release arch_atomic64_set_release
#endif
#ifndef arch_atomic64_add_return_relaxed
#define arch_atomic64_add_return_acquire arch_atomic64_add_return
#define arch_atomic64_add_return_release arch_atomic64_add_return
#define arch_atomic64_add_return_relaxed arch_atomic64_add_return
#else /* arch_atomic64_add_return_relaxed */
#ifndef arch_atomic64_add_return_acquire
static __always_inline s64
arch_atomic64_add_return_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_add_return_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire
#endif
#ifndef arch_atomic64_add_return_release
static __always_inline s64
arch_atomic64_add_return_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_add_return_relaxed(i, v);
}
#define arch_atomic64_add_return_release arch_atomic64_add_return_release
#endif
#ifndef arch_atomic64_add_return
static __always_inline s64
arch_atomic64_add_return(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_add_return_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_add_return arch_atomic64_add_return
#endif
#endif /* arch_atomic64_add_return_relaxed */
#ifndef arch_atomic64_fetch_add_relaxed
#define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add
#define arch_atomic64_fetch_add_release arch_atomic64_fetch_add
#define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add
#else /* arch_atomic64_fetch_add_relaxed */
#ifndef arch_atomic64_fetch_add_acquire
static __always_inline s64
arch_atomic64_fetch_add_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_add_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire
#endif
#ifndef arch_atomic64_fetch_add_release
static __always_inline s64
arch_atomic64_fetch_add_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_add_relaxed(i, v);
}
#define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release
#endif
#ifndef arch_atomic64_fetch_add
static __always_inline s64
arch_atomic64_fetch_add(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_add_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_add arch_atomic64_fetch_add
#endif
#endif /* arch_atomic64_fetch_add_relaxed */
#ifndef arch_atomic64_sub_return_relaxed
#define arch_atomic64_sub_return_acquire arch_atomic64_sub_return
#define arch_atomic64_sub_return_release arch_atomic64_sub_return
#define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return
#else /* arch_atomic64_sub_return_relaxed */
#ifndef arch_atomic64_sub_return_acquire
static __always_inline s64
arch_atomic64_sub_return_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_sub_return_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire
#endif
#ifndef arch_atomic64_sub_return_release
static __always_inline s64
arch_atomic64_sub_return_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_sub_return_relaxed(i, v);
}
#define arch_atomic64_sub_return_release arch_atomic64_sub_return_release
#endif
#ifndef arch_atomic64_sub_return
static __always_inline s64
arch_atomic64_sub_return(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_sub_return_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_sub_return arch_atomic64_sub_return
#endif
#endif /* arch_atomic64_sub_return_relaxed */
#ifndef arch_atomic64_fetch_sub_relaxed
#define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub
#define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub
#define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub
#else /* arch_atomic64_fetch_sub_relaxed */
#ifndef arch_atomic64_fetch_sub_acquire
static __always_inline s64
arch_atomic64_fetch_sub_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_sub_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire
#endif
#ifndef arch_atomic64_fetch_sub_release
static __always_inline s64
arch_atomic64_fetch_sub_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_sub_relaxed(i, v);
}
#define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release
#endif
#ifndef arch_atomic64_fetch_sub
static __always_inline s64
arch_atomic64_fetch_sub(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_sub_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_sub arch_atomic64_fetch_sub
#endif
#endif /* arch_atomic64_fetch_sub_relaxed */
#ifndef arch_atomic64_inc
static __always_inline void
arch_atomic64_inc(atomic64_t *v)
{
arch_atomic64_add(1, v);
}
#define arch_atomic64_inc arch_atomic64_inc
#endif
#ifndef arch_atomic64_inc_return_relaxed
#ifdef arch_atomic64_inc_return
#define arch_atomic64_inc_return_acquire arch_atomic64_inc_return
#define arch_atomic64_inc_return_release arch_atomic64_inc_return
#define arch_atomic64_inc_return_relaxed arch_atomic64_inc_return
#endif /* arch_atomic64_inc_return */
#ifndef arch_atomic64_inc_return
static __always_inline s64
arch_atomic64_inc_return(atomic64_t *v)
{
return arch_atomic64_add_return(1, v);
}
#define arch_atomic64_inc_return arch_atomic64_inc_return
#endif
#ifndef arch_atomic64_inc_return_acquire
static __always_inline s64
arch_atomic64_inc_return_acquire(atomic64_t *v)
{
return arch_atomic64_add_return_acquire(1, v);
}
#define arch_atomic64_inc_return_acquire arch_atomic64_inc_return_acquire
#endif
#ifndef arch_atomic64_inc_return_release
static __always_inline s64
arch_atomic64_inc_return_release(atomic64_t *v)
{
return arch_atomic64_add_return_release(1, v);
}
#define arch_atomic64_inc_return_release arch_atomic64_inc_return_release
#endif
#ifndef arch_atomic64_inc_return_relaxed
static __always_inline s64
arch_atomic64_inc_return_relaxed(atomic64_t *v)
{
return arch_atomic64_add_return_relaxed(1, v);
}
#define arch_atomic64_inc_return_relaxed arch_atomic64_inc_return_relaxed
#endif
#else /* arch_atomic64_inc_return_relaxed */
#ifndef arch_atomic64_inc_return_acquire
static __always_inline s64
arch_atomic64_inc_return_acquire(atomic64_t *v)
{
s64 ret = arch_atomic64_inc_return_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_inc_return_acquire arch_atomic64_inc_return_acquire
#endif
#ifndef arch_atomic64_inc_return_release
static __always_inline s64
arch_atomic64_inc_return_release(atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_inc_return_relaxed(v);
}
#define arch_atomic64_inc_return_release arch_atomic64_inc_return_release
#endif
#ifndef arch_atomic64_inc_return
static __always_inline s64
arch_atomic64_inc_return(atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_inc_return_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_inc_return arch_atomic64_inc_return
#endif
#endif /* arch_atomic64_inc_return_relaxed */
#ifndef arch_atomic64_fetch_inc_relaxed
#ifdef arch_atomic64_fetch_inc
#define arch_atomic64_fetch_inc_acquire arch_atomic64_fetch_inc
#define arch_atomic64_fetch_inc_release arch_atomic64_fetch_inc
#define arch_atomic64_fetch_inc_relaxed arch_atomic64_fetch_inc
#endif /* arch_atomic64_fetch_inc */
#ifndef arch_atomic64_fetch_inc
static __always_inline s64
arch_atomic64_fetch_inc(atomic64_t *v)
{
return arch_atomic64_fetch_add(1, v);
}
#define arch_atomic64_fetch_inc arch_atomic64_fetch_inc
#endif
#ifndef arch_atomic64_fetch_inc_acquire
static __always_inline s64
arch_atomic64_fetch_inc_acquire(atomic64_t *v)
{
return arch_atomic64_fetch_add_acquire(1, v);
}
#define arch_atomic64_fetch_inc_acquire arch_atomic64_fetch_inc_acquire
#endif
#ifndef arch_atomic64_fetch_inc_release
static __always_inline s64
arch_atomic64_fetch_inc_release(atomic64_t *v)
{
return arch_atomic64_fetch_add_release(1, v);
}
#define arch_atomic64_fetch_inc_release arch_atomic64_fetch_inc_release
#endif
#ifndef arch_atomic64_fetch_inc_relaxed
static __always_inline s64
arch_atomic64_fetch_inc_relaxed(atomic64_t *v)
{
return arch_atomic64_fetch_add_relaxed(1, v);
}
#define arch_atomic64_fetch_inc_relaxed arch_atomic64_fetch_inc_relaxed
#endif
#else /* arch_atomic64_fetch_inc_relaxed */
#ifndef arch_atomic64_fetch_inc_acquire
static __always_inline s64
arch_atomic64_fetch_inc_acquire(atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_inc_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_inc_acquire arch_atomic64_fetch_inc_acquire
#endif
#ifndef arch_atomic64_fetch_inc_release
static __always_inline s64
arch_atomic64_fetch_inc_release(atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_inc_relaxed(v);
}
#define arch_atomic64_fetch_inc_release arch_atomic64_fetch_inc_release
#endif
#ifndef arch_atomic64_fetch_inc
static __always_inline s64
arch_atomic64_fetch_inc(atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_inc_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_inc arch_atomic64_fetch_inc
#endif
#endif /* arch_atomic64_fetch_inc_relaxed */
#ifndef arch_atomic64_dec
static __always_inline void
arch_atomic64_dec(atomic64_t *v)
{
arch_atomic64_sub(1, v);
}
#define arch_atomic64_dec arch_atomic64_dec
#endif
#ifndef arch_atomic64_dec_return_relaxed
#ifdef arch_atomic64_dec_return
#define arch_atomic64_dec_return_acquire arch_atomic64_dec_return
#define arch_atomic64_dec_return_release arch_atomic64_dec_return
#define arch_atomic64_dec_return_relaxed arch_atomic64_dec_return
#endif /* arch_atomic64_dec_return */
#ifndef arch_atomic64_dec_return
static __always_inline s64
arch_atomic64_dec_return(atomic64_t *v)
{
return arch_atomic64_sub_return(1, v);
}
#define arch_atomic64_dec_return arch_atomic64_dec_return
#endif
#ifndef arch_atomic64_dec_return_acquire
static __always_inline s64
arch_atomic64_dec_return_acquire(atomic64_t *v)
{
return arch_atomic64_sub_return_acquire(1, v);
}
#define arch_atomic64_dec_return_acquire arch_atomic64_dec_return_acquire
#endif
#ifndef arch_atomic64_dec_return_release
static __always_inline s64
arch_atomic64_dec_return_release(atomic64_t *v)
{
return arch_atomic64_sub_return_release(1, v);
}
#define arch_atomic64_dec_return_release arch_atomic64_dec_return_release
#endif
#ifndef arch_atomic64_dec_return_relaxed
static __always_inline s64
arch_atomic64_dec_return_relaxed(atomic64_t *v)
{
return arch_atomic64_sub_return_relaxed(1, v);
}
#define arch_atomic64_dec_return_relaxed arch_atomic64_dec_return_relaxed
#endif
#else /* arch_atomic64_dec_return_relaxed */
#ifndef arch_atomic64_dec_return_acquire
static __always_inline s64
arch_atomic64_dec_return_acquire(atomic64_t *v)
{
s64 ret = arch_atomic64_dec_return_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_dec_return_acquire arch_atomic64_dec_return_acquire
#endif
#ifndef arch_atomic64_dec_return_release
static __always_inline s64
arch_atomic64_dec_return_release(atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_dec_return_relaxed(v);
}
#define arch_atomic64_dec_return_release arch_atomic64_dec_return_release
#endif
#ifndef arch_atomic64_dec_return
static __always_inline s64
arch_atomic64_dec_return(atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_dec_return_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_dec_return arch_atomic64_dec_return
#endif
#endif /* arch_atomic64_dec_return_relaxed */
#ifndef arch_atomic64_fetch_dec_relaxed
#ifdef arch_atomic64_fetch_dec
#define arch_atomic64_fetch_dec_acquire arch_atomic64_fetch_dec
#define arch_atomic64_fetch_dec_release arch_atomic64_fetch_dec
#define arch_atomic64_fetch_dec_relaxed arch_atomic64_fetch_dec
#endif /* arch_atomic64_fetch_dec */
#ifndef arch_atomic64_fetch_dec
static __always_inline s64
arch_atomic64_fetch_dec(atomic64_t *v)
{
return arch_atomic64_fetch_sub(1, v);
}
#define arch_atomic64_fetch_dec arch_atomic64_fetch_dec
#endif
#ifndef arch_atomic64_fetch_dec_acquire
static __always_inline s64
arch_atomic64_fetch_dec_acquire(atomic64_t *v)
{
return arch_atomic64_fetch_sub_acquire(1, v);
}
#define arch_atomic64_fetch_dec_acquire arch_atomic64_fetch_dec_acquire
#endif
#ifndef arch_atomic64_fetch_dec_release
static __always_inline s64
arch_atomic64_fetch_dec_release(atomic64_t *v)
{
return arch_atomic64_fetch_sub_release(1, v);
}
#define arch_atomic64_fetch_dec_release arch_atomic64_fetch_dec_release
#endif
#ifndef arch_atomic64_fetch_dec_relaxed
static __always_inline s64
arch_atomic64_fetch_dec_relaxed(atomic64_t *v)
{
return arch_atomic64_fetch_sub_relaxed(1, v);
}
#define arch_atomic64_fetch_dec_relaxed arch_atomic64_fetch_dec_relaxed
#endif
#else /* arch_atomic64_fetch_dec_relaxed */
#ifndef arch_atomic64_fetch_dec_acquire
static __always_inline s64
arch_atomic64_fetch_dec_acquire(atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_dec_relaxed(v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_dec_acquire arch_atomic64_fetch_dec_acquire
#endif
#ifndef arch_atomic64_fetch_dec_release
static __always_inline s64
arch_atomic64_fetch_dec_release(atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_dec_relaxed(v);
}
#define arch_atomic64_fetch_dec_release arch_atomic64_fetch_dec_release
#endif
#ifndef arch_atomic64_fetch_dec
static __always_inline s64
arch_atomic64_fetch_dec(atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_dec_relaxed(v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_dec arch_atomic64_fetch_dec
#endif
#endif /* arch_atomic64_fetch_dec_relaxed */
#ifndef arch_atomic64_fetch_and_relaxed
#define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and
#define arch_atomic64_fetch_and_release arch_atomic64_fetch_and
#define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and
#else /* arch_atomic64_fetch_and_relaxed */
#ifndef arch_atomic64_fetch_and_acquire
static __always_inline s64
arch_atomic64_fetch_and_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_and_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire
#endif
#ifndef arch_atomic64_fetch_and_release
static __always_inline s64
arch_atomic64_fetch_and_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_and_relaxed(i, v);
}
#define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release
#endif
#ifndef arch_atomic64_fetch_and
static __always_inline s64
arch_atomic64_fetch_and(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_and_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_and arch_atomic64_fetch_and
#endif
#endif /* arch_atomic64_fetch_and_relaxed */
#ifndef arch_atomic64_andnot
static __always_inline void
arch_atomic64_andnot(s64 i, atomic64_t *v)
{
arch_atomic64_and(~i, v);
}
#define arch_atomic64_andnot arch_atomic64_andnot
#endif
#ifndef arch_atomic64_fetch_andnot_relaxed
#ifdef arch_atomic64_fetch_andnot
#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot
#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot
#define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot
#endif /* arch_atomic64_fetch_andnot */
#ifndef arch_atomic64_fetch_andnot
static __always_inline s64
arch_atomic64_fetch_andnot(s64 i, atomic64_t *v)
{
return arch_atomic64_fetch_and(~i, v);
}
#define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
#endif
#ifndef arch_atomic64_fetch_andnot_acquire
static __always_inline s64
arch_atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v)
{
return arch_atomic64_fetch_and_acquire(~i, v);
}
#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
#endif
#ifndef arch_atomic64_fetch_andnot_release
static __always_inline s64
arch_atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
{
return arch_atomic64_fetch_and_release(~i, v);
}
#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
#endif
#ifndef arch_atomic64_fetch_andnot_relaxed
static __always_inline s64
arch_atomic64_fetch_andnot_relaxed(s64 i, atomic64_t *v)
{
return arch_atomic64_fetch_and_relaxed(~i, v);
}
#define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed
#endif
#else /* arch_atomic64_fetch_andnot_relaxed */
#ifndef arch_atomic64_fetch_andnot_acquire
static __always_inline s64
arch_atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_andnot_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
#endif
#ifndef arch_atomic64_fetch_andnot_release
static __always_inline s64
arch_atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_andnot_relaxed(i, v);
}
#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
#endif
#ifndef arch_atomic64_fetch_andnot
static __always_inline s64
arch_atomic64_fetch_andnot(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_andnot_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
#endif
#endif /* arch_atomic64_fetch_andnot_relaxed */
#ifndef arch_atomic64_fetch_or_relaxed
#define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or
#define arch_atomic64_fetch_or_release arch_atomic64_fetch_or
#define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or
#else /* arch_atomic64_fetch_or_relaxed */
#ifndef arch_atomic64_fetch_or_acquire
static __always_inline s64
arch_atomic64_fetch_or_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_or_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
#endif
#ifndef arch_atomic64_fetch_or_release
static __always_inline s64
arch_atomic64_fetch_or_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_or_relaxed(i, v);
}
#define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release
#endif
#ifndef arch_atomic64_fetch_or
static __always_inline s64
arch_atomic64_fetch_or(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_or_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_or arch_atomic64_fetch_or
#endif
#endif /* arch_atomic64_fetch_or_relaxed */
#ifndef arch_atomic64_fetch_xor_relaxed
#define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor
#define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor
#define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor
#else /* arch_atomic64_fetch_xor_relaxed */
#ifndef arch_atomic64_fetch_xor_acquire
static __always_inline s64
arch_atomic64_fetch_xor_acquire(s64 i, atomic64_t *v)
{
s64 ret = arch_atomic64_fetch_xor_relaxed(i, v);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire
#endif
#ifndef arch_atomic64_fetch_xor_release
static __always_inline s64
arch_atomic64_fetch_xor_release(s64 i, atomic64_t *v)
{
__atomic_release_fence();
return arch_atomic64_fetch_xor_relaxed(i, v);
}
#define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release
#endif
#ifndef arch_atomic64_fetch_xor
static __always_inline s64
arch_atomic64_fetch_xor(s64 i, atomic64_t *v)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_fetch_xor_relaxed(i, v);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
#endif
#endif /* arch_atomic64_fetch_xor_relaxed */
#ifndef arch_atomic64_xchg_relaxed
#define arch_atomic64_xchg_acquire arch_atomic64_xchg
#define arch_atomic64_xchg_release arch_atomic64_xchg
#define arch_atomic64_xchg_relaxed arch_atomic64_xchg
#else /* arch_atomic64_xchg_relaxed */
#ifndef arch_atomic64_xchg_acquire
static __always_inline s64
arch_atomic64_xchg_acquire(atomic64_t *v, s64 i)
{
s64 ret = arch_atomic64_xchg_relaxed(v, i);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_xchg_acquire arch_atomic64_xchg_acquire
#endif
#ifndef arch_atomic64_xchg_release
static __always_inline s64
arch_atomic64_xchg_release(atomic64_t *v, s64 i)
{
__atomic_release_fence();
return arch_atomic64_xchg_relaxed(v, i);
}
#define arch_atomic64_xchg_release arch_atomic64_xchg_release
#endif
#ifndef arch_atomic64_xchg
static __always_inline s64
arch_atomic64_xchg(atomic64_t *v, s64 i)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_xchg_relaxed(v, i);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_xchg arch_atomic64_xchg
#endif
#endif /* arch_atomic64_xchg_relaxed */
#ifndef arch_atomic64_cmpxchg_relaxed
#define arch_atomic64_cmpxchg_acquire arch_atomic64_cmpxchg
#define arch_atomic64_cmpxchg_release arch_atomic64_cmpxchg
#define arch_atomic64_cmpxchg_relaxed arch_atomic64_cmpxchg
#else /* arch_atomic64_cmpxchg_relaxed */
#ifndef arch_atomic64_cmpxchg_acquire
static __always_inline s64
arch_atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new)
{
s64 ret = arch_atomic64_cmpxchg_relaxed(v, old, new);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_cmpxchg_acquire arch_atomic64_cmpxchg_acquire
#endif
#ifndef arch_atomic64_cmpxchg_release
static __always_inline s64
arch_atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new)
{
__atomic_release_fence();
return arch_atomic64_cmpxchg_relaxed(v, old, new);
}
#define arch_atomic64_cmpxchg_release arch_atomic64_cmpxchg_release
#endif
#ifndef arch_atomic64_cmpxchg
static __always_inline s64
arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
{
s64 ret;
__atomic_pre_full_fence();
ret = arch_atomic64_cmpxchg_relaxed(v, old, new);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_cmpxchg arch_atomic64_cmpxchg
#endif
#endif /* arch_atomic64_cmpxchg_relaxed */
#ifndef arch_atomic64_try_cmpxchg_relaxed
#ifdef arch_atomic64_try_cmpxchg
#define arch_atomic64_try_cmpxchg_acquire arch_atomic64_try_cmpxchg
#define arch_atomic64_try_cmpxchg_release arch_atomic64_try_cmpxchg
#define arch_atomic64_try_cmpxchg_relaxed arch_atomic64_try_cmpxchg
#endif /* arch_atomic64_try_cmpxchg */
#ifndef arch_atomic64_try_cmpxchg
static __always_inline bool
arch_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
{
s64 r, o = *old;
r = arch_atomic64_cmpxchg(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic64_try_cmpxchg arch_atomic64_try_cmpxchg
#endif
#ifndef arch_atomic64_try_cmpxchg_acquire
static __always_inline bool
arch_atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
{
s64 r, o = *old;
r = arch_atomic64_cmpxchg_acquire(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic64_try_cmpxchg_acquire arch_atomic64_try_cmpxchg_acquire
#endif
#ifndef arch_atomic64_try_cmpxchg_release
static __always_inline bool
arch_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
{
s64 r, o = *old;
r = arch_atomic64_cmpxchg_release(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic64_try_cmpxchg_release arch_atomic64_try_cmpxchg_release
#endif
#ifndef arch_atomic64_try_cmpxchg_relaxed
static __always_inline bool
arch_atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
{
s64 r, o = *old;
r = arch_atomic64_cmpxchg_relaxed(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
}
#define arch_atomic64_try_cmpxchg_relaxed arch_atomic64_try_cmpxchg_relaxed
#endif
#else /* arch_atomic64_try_cmpxchg_relaxed */
#ifndef arch_atomic64_try_cmpxchg_acquire
static __always_inline bool
arch_atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
{
bool ret = arch_atomic64_try_cmpxchg_relaxed(v, old, new);
__atomic_acquire_fence();
return ret;
}
#define arch_atomic64_try_cmpxchg_acquire arch_atomic64_try_cmpxchg_acquire
#endif
#ifndef arch_atomic64_try_cmpxchg_release
static __always_inline bool
arch_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
{
__atomic_release_fence();
return arch_atomic64_try_cmpxchg_relaxed(v, old, new);
}
#define arch_atomic64_try_cmpxchg_release arch_atomic64_try_cmpxchg_release
#endif
#ifndef arch_atomic64_try_cmpxchg
static __always_inline bool
arch_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
{
bool ret;
__atomic_pre_full_fence();
ret = arch_atomic64_try_cmpxchg_relaxed(v, old, new);
__atomic_post_full_fence();
return ret;
}
#define arch_atomic64_try_cmpxchg arch_atomic64_try_cmpxchg
#endif
#endif /* arch_atomic64_try_cmpxchg_relaxed */
#ifndef arch_atomic64_sub_and_test
/**
* arch_atomic64_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type atomic64_t
*
* Atomically subtracts @i from @v and returns
* true if the result is zero, or false for all
* other cases.
*/
static __always_inline bool
arch_atomic64_sub_and_test(s64 i, atomic64_t *v)
{
return arch_atomic64_sub_return(i, v) == 0;
}
#define arch_atomic64_sub_and_test arch_atomic64_sub_and_test
#endif
#ifndef arch_atomic64_dec_and_test
/**
* arch_atomic64_dec_and_test - decrement and test
* @v: pointer of type atomic64_t
*
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
static __always_inline bool
arch_atomic64_dec_and_test(atomic64_t *v)
{
return arch_atomic64_dec_return(v) == 0;
}
#define arch_atomic64_dec_and_test arch_atomic64_dec_and_test
#endif
#ifndef arch_atomic64_inc_and_test
/**
* arch_atomic64_inc_and_test - increment and test
* @v: pointer of type atomic64_t
*
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
static __always_inline bool
arch_atomic64_inc_and_test(atomic64_t *v)
{
return arch_atomic64_inc_return(v) == 0;
}
#define arch_atomic64_inc_and_test arch_atomic64_inc_and_test
#endif
#ifndef arch_atomic64_add_negative
/**
* arch_atomic64_add_negative - add and test if negative
* @i: integer value to add
* @v: pointer of type atomic64_t
*
* Atomically adds @i to @v and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
static __always_inline bool
arch_atomic64_add_negative(s64 i, atomic64_t *v)
{
return arch_atomic64_add_return(i, v) < 0;
}
#define arch_atomic64_add_negative arch_atomic64_add_negative
#endif
#ifndef arch_atomic64_fetch_add_unless
/**
* arch_atomic64_fetch_add_unless - add unless the number is already a given value
* @v: pointer of type atomic64_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns original value of @v
*/
static __always_inline s64
arch_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
{
s64 c = arch_atomic64_read(v);
do {
if (unlikely(c == u))
break;
} while (!arch_atomic64_try_cmpxchg(v, &c, c + a));
return c;
}
#define arch_atomic64_fetch_add_unless arch_atomic64_fetch_add_unless
#endif
#ifndef arch_atomic64_add_unless
/**
* arch_atomic64_add_unless - add unless the number is already a given value
* @v: pointer of type atomic64_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, if @v was not already @u.
* Returns true if the addition was done.
*/
static __always_inline bool
arch_atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
{
return arch_atomic64_fetch_add_unless(v, a, u) != u;
}
#define arch_atomic64_add_unless arch_atomic64_add_unless
#endif
#ifndef arch_atomic64_inc_not_zero
/**
* arch_atomic64_inc_not_zero - increment unless the number is zero
* @v: pointer of type atomic64_t
*
* Atomically increments @v by 1, if @v is non-zero.
* Returns true if the increment was done.
*/
static __always_inline bool
arch_atomic64_inc_not_zero(atomic64_t *v)
{
return arch_atomic64_add_unless(v, 1, 0);
}
#define arch_atomic64_inc_not_zero arch_atomic64_inc_not_zero
#endif
#ifndef arch_atomic64_inc_unless_negative
static __always_inline bool
arch_atomic64_inc_unless_negative(atomic64_t *v)
{
s64 c = arch_atomic64_read(v);
do {
if (unlikely(c < 0))
return false;
} while (!arch_atomic64_try_cmpxchg(v, &c, c + 1));
return true;
}
#define arch_atomic64_inc_unless_negative arch_atomic64_inc_unless_negative
#endif
#ifndef arch_atomic64_dec_unless_positive
static __always_inline bool
arch_atomic64_dec_unless_positive(atomic64_t *v)
{
s64 c = arch_atomic64_read(v);
do {
if (unlikely(c > 0))
return false;
} while (!arch_atomic64_try_cmpxchg(v, &c, c - 1));
return true;
}
#define arch_atomic64_dec_unless_positive arch_atomic64_dec_unless_positive
#endif
#ifndef arch_atomic64_dec_if_positive
static __always_inline s64
arch_atomic64_dec_if_positive(atomic64_t *v)
{
s64 dec, c = arch_atomic64_read(v);
do {
dec = c - 1;
if (unlikely(dec < 0))
break;
} while (!arch_atomic64_try_cmpxchg(v, &c, dec));
return dec;
}
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
#endif
#endif /* _LINUX_ATOMIC_FALLBACK_H */
// 8e2cc06bc0d2c0967d2f8424762bd48555ee40ae
Reference in a new issue View git blame Copy permalink