arch/ia64/include/asm/sync_bitops.h

   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
  13 static inline void sync_set_bit(int nr, volatile void *addr)
  14 {
  15         set_bit(nr, addr);
  16 }
  17
  18 static inline void sync_clear_bit(int nr, volatile void *addr)
  19 {
  20         clear_bit(nr, addr);
  21 }
  22
  23 static inline void sync_change_bit(int nr, volatile void *addr)
  24 {
  25         change_bit(nr, addr);
  26 }
  27
  28 static inline int sync_test_and_set_bit(int nr, volatile void *addr)
  29 {
  30         return test_and_set_bit(nr, addr);
  31 }
  32
  33 static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
  34 {
  35         return test_and_clear_bit(nr, addr);
  36 }
  37
  38 static inline int sync_test_and_change_bit(int nr, volatile void *addr)
  39 {
  40         return test_and_change_bit(nr, addr);
  41 }
  42
  43 static 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 */