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| -rw-r--r-- | arch/ia64/include/asm/sync_bitops.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/sync_bitops.h b/arch/ia64/include/asm/sync_bitops.h new file mode 100644 index 00000000000..593c12eeb27 --- /dev/null +++ b/arch/ia64/include/asm/sync_bitops.h @@ -0,0 +1,51 @@ +#ifndef _ASM_IA64_SYNC_BITOPS_H +#define _ASM_IA64_SYNC_BITOPS_H + +/* + * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp> + * + * Based on synch_bitops.h which Dan Magenhaimer wrote. + * + * bit operations which provide guaranteed strong synchronisation + * when communicating with Xen or other guest OSes running on other CPUs. + */ + +static inline void sync_set_bit(int nr, volatile void *addr) +{ + set_bit(nr, addr); +} + +static inline void sync_clear_bit(int nr, volatile void *addr) +{ + clear_bit(nr, addr); +} + +static inline void sync_change_bit(int nr, volatile void *addr) +{ + change_bit(nr, addr); +} + +static inline int sync_test_and_set_bit(int nr, volatile void *addr) +{ + return test_and_set_bit(nr, addr); +} + +static inline int sync_test_and_clear_bit(int nr, volatile void *addr) +{ + return test_and_clear_bit(nr, addr); +} + +static inline int sync_test_and_change_bit(int nr, volatile void *addr) +{ + return test_and_change_bit(nr, addr); +} + +static inline int sync_test_bit(int nr, const volatile void *addr) +{ + return test_bit(nr, addr); +} + +#define sync_cmpxchg(ptr, old, new) \ + ((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new))) + +#endif /* _ASM_IA64_SYNC_BITOPS_H */ |