LXR linux/arch/ia64/include/asm/sync

   1#ifndef _ASM_IA64_SYNC_BITOPS_H
   2#define _ASM_IA64_SYNC_BITOPS_H
   3
   4/*
   5 * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp>
   6 *
   7 * Based on synch_bitops.h which Dan Magenhaimer wrote.
   8 *
   9 * bit operations which provide guaranteed strong synchronisation
  10 * when communicating with Xen or other guest OSes running on other CPUs.
  11 */
  12
  13static inline void sync_set_bit(int nr, volatile void *addr)
  14{
  15        set_bit(nr, addr);
  16}
  17
  18static inline void sync_clear_bit(int nr, volatile void *addr)
  19{
  20        clear_bit(nr, addr);
  21}
  22
  23static inline void sync_change_bit(int nr, volatile void *addr)
  24{
  25        change_bit(nr, addr);
  26}
  27
  28static inline int sync_test_and_set_bit(int nr, volatile void *addr)
  29{
  30        return test_and_set_bit(nr, addr);
  31}
  32
  33static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
  34{
  35        return test_and_clear_bit(nr, addr);
  36}
  37
  38static inline int sync_test_and_change_bit(int nr, volatile void *addr)
  39{
  40        return test_and_change_bit(nr, addr);
  41}
  42
  43static inline int sync_test_bit(int nr, const volatile void *addr)
  44{
  45        return test_bit(nr, addr);
  46}
  47
  48#define sync_cmpxchg(ptr, old, new)                             \
  49        ((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new)))
  50
  51#endif /* _ASM_IA64_SYNC_BITOPS_H */
  52