define sync bitops which is necessary for ia64/xen.

diff --git a/include/asm-ia64/sync_bitops.h b/include/asm-ia64/sync_bitops.h new file mode 100644 index 0000000..27dc777 --- /dev/null +++ b/include/asm-ia64/sync_bitops.h @@ -0,0 +1,57 @@ +#ifndef _ASM_IA64_SYNC_BITOPS_H +#define _ASM_IA64_SYNC_BITOPS_H + +/* + * Copyright 1992, Linus Torvalds. + * Heavily modified to 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_const_test_bit(int nr, const volatile void *addr) +{ + return test_bit(nr, addr); +} + +static inline int sync_var_test_bit(int nr, volatile void *addr) +{ + return test_bit(nr, addr); +} + +#define sync_cmpxchg(ptr, old, new) cmpxchg_acq((ptr), (old), (new)) + +#define sync_test_bit(nr,addr) \ + (__builtin_constant_p(nr) ? \ + sync_const_test_bit((nr), (addr)) : \ + sync_var_test_bit((nr), (addr))) + +#endif /* _ASM_IA64_SYNC_BITOPS_H */