Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx> --- include/asm-ia64/sync_bitops.h | 61 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 61 insertions(+), 0 deletions(-) create mode 100644 include/asm-ia64/sync_bitops.h diff --git a/include/asm-ia64/sync_bitops.h b/include/asm-ia64/sync_bitops.h new file mode 100644 index 0000000..dc402be --- /dev/null +++ b/include/asm-ia64/sync_bitops.h @@ -0,0 +1,61 @@ +#ifndef __XEN_SYNC_BITOPS_H__ +#define __XEN_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. + */ + +#define ADDR (*(volatile long *) addr) + +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 ia64_cmpxchg4_acq + +#define sync_test_bit(nr,addr) \ + (__builtin_constant_p(nr) ? \ + sync_const_test_bit((nr), (addr)) : \ + sync_var_test_bit((nr), (addr))) + +#define sync_cmpxchg_subword sync_cmpxchg + +#endif /* __XEN_SYNC_BITOPS_H__ */ -- 1.5.3 - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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