diff options
Diffstat (limited to 'include/asm-generic/futex.h')
| -rw-r--r-- | include/asm-generic/futex.h | 31 |
1 files changed, 11 insertions, 20 deletions
diff --git a/include/asm-generic/futex.h b/include/asm-generic/futex.h index f4c3470480c7..2a19215baae5 100644 --- a/include/asm-generic/futex.h +++ b/include/asm-generic/futex.h @@ -6,15 +6,22 @@ #include <linux/uaccess.h> #include <asm/errno.h> +#ifndef futex_atomic_cmpxchg_inatomic #ifndef CONFIG_SMP /* * The following implementation only for uniprocessor machines. * It relies on preempt_disable() ensuring mutual exclusion. * */ +#define futex_atomic_cmpxchg_inatomic(uval, uaddr, oldval, newval) \ + futex_atomic_cmpxchg_inatomic_local(uval, uaddr, oldval, newval) +#define arch_futex_atomic_op_inuser(op, oparg, oval, uaddr) \ + futex_atomic_op_inuser_local(op, oparg, oval, uaddr) +#endif /* CONFIG_SMP */ +#endif /** - * arch_futex_atomic_op_inuser() - Atomic arithmetic operation with constant + * futex_atomic_op_inuser_local() - Atomic arithmetic operation with constant * argument and comparison of the previous * futex value with another constant. * @@ -28,7 +35,7 @@ * -ENOSYS - Operation not supported */ static inline int -arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval, u32 __user *uaddr) +futex_atomic_op_inuser_local(int op, u32 oparg, int *oval, u32 __user *uaddr) { int oldval, ret; u32 tmp; @@ -75,7 +82,7 @@ out_pagefault_enable: } /** - * futex_atomic_cmpxchg_inatomic() - Compare and exchange the content of the + * futex_atomic_cmpxchg_inatomic_local() - Compare and exchange the content of the * uaddr with newval if the current value is * oldval. * @uval: pointer to store content of @uaddr @@ -87,10 +94,9 @@ out_pagefault_enable: * 0 - On success * -EFAULT - User access resulted in a page fault * -EAGAIN - Atomic operation was unable to complete due to contention - * -ENOSYS - Function not implemented (only if !HAVE_FUTEX_CMPXCHG) */ static inline int -futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, +futex_atomic_cmpxchg_inatomic_local(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval) { u32 val; @@ -112,19 +118,4 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, return 0; } -#else -static inline int -arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval, u32 __user *uaddr) -{ - return -ENOSYS; -} - -static inline int -futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, - u32 oldval, u32 newval) -{ - return -ENOSYS; -} - -#endif /* CONFIG_SMP */ #endif |