diff options
Diffstat (limited to 'arch/powerpc/include/asm/spinlock.h')
| -rw-r--r-- | arch/powerpc/include/asm/spinlock.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index 5f54a744dcc..35aa339410b 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -28,7 +28,7 @@ #include <asm/synch.h> #include <asm/ppc-opcode.h> -#define arch_spin_is_locked(x) ((x)->slock != 0) +#define smp_mb__after_unlock_lock() smp_mb() /* Full ordering for lock. */ #ifdef CONFIG_PPC64 /* use 0x800000yy when locked, where yy == CPU number */ @@ -54,6 +54,16 @@ #define SYNC_IO #endif +static __always_inline int arch_spin_value_unlocked(arch_spinlock_t lock) +{ + return lock.slock == 0; +} + +static inline int arch_spin_is_locked(arch_spinlock_t *lock) +{ + return !arch_spin_value_unlocked(*lock); +} + /* * This returns the old value in the lock, so we succeeded * in getting the lock if the return value is 0. |