diff options
Diffstat (limited to 'kernel/arch/x86/include/asm/atomic64_32.h')
| -rw-r--r-- | kernel/arch/x86/include/asm/atomic64_32.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/atomic64_32.h b/kernel/arch/x86/include/asm/atomic64_32.h index b154de75c..a11c30b77 100644 --- a/kernel/arch/x86/include/asm/atomic64_32.h +++ b/kernel/arch/x86/include/asm/atomic64_32.h @@ -313,4 +313,18 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) #undef alternative_atomic64 #undef __alternative_atomic64 +#define ATOMIC64_OP(op, c_op) \ +static inline void atomic64_##op(long long i, atomic64_t *v) \ +{ \ + long long old, c = 0; \ + while ((old = atomic64_cmpxchg(v, c, c c_op i)) != c) \ + c = old; \ +} + +ATOMIC64_OP(and, &) +ATOMIC64_OP(or, |) +ATOMIC64_OP(xor, ^) + +#undef ATOMIC64_OP + #endif /* _ASM_X86_ATOMIC64_32_H */ |