diff options
Diffstat (limited to 'tools/arch/x86/include/asm/atomic.h')
| -rw-r--r-- | tools/arch/x86/include/asm/atomic.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/tools/arch/x86/include/asm/atomic.h b/tools/arch/x86/include/asm/atomic.h index 328eeceec709..365cf182df12 100644 --- a/tools/arch/x86/include/asm/atomic.h +++ b/tools/arch/x86/include/asm/atomic.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _TOOLS_LINUX_ASM_X86_ATOMIC_H #define _TOOLS_LINUX_ASM_X86_ATOMIC_H @@ -7,6 +8,7 @@ #define LOCK_PREFIX "\n\tlock; " +#include <asm/asm.h> #include <asm/cmpxchg.h> /* @@ -24,7 +26,7 @@ */ static inline int atomic_read(const atomic_t *v) { - return ACCESS_ONCE((v)->counter); + return READ_ONCE((v)->counter); } /** @@ -69,4 +71,14 @@ static __always_inline int atomic_cmpxchg(atomic_t *v, int old, int new) return cmpxchg(&v->counter, old, new); } +static inline int test_and_set_bit(long nr, unsigned long *addr) +{ + GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(bts), *addr, "Ir", nr, "%0", "c"); +} + +static inline int test_and_clear_bit(long nr, unsigned long *addr) +{ + GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(btc), *addr, "Ir", nr, "%0", "c"); +} + #endif /* _TOOLS_LINUX_ASM_X86_ATOMIC_H */ |