diff options
Diffstat (limited to 'arch/powerpc/include/asm/spinlock.h')
| -rw-r--r-- | arch/powerpc/include/asm/spinlock.h | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index f9611bd69ed..35aa339410b 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -23,18 +23,21 @@ #ifdef CONFIG_PPC64 #include <asm/paca.h> #include <asm/hvcall.h> -#include <asm/iseries/hv_call.h> #endif #include <asm/asm-compat.h> #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 */ +#ifdef __BIG_ENDIAN__ #define LOCK_TOKEN (*(u32 *)(&get_paca()->lock_token)) #else +#define LOCK_TOKEN (*(u32 *)(&get_paca()->paca_index)) +#endif +#else #define LOCK_TOKEN 1 #endif @@ -51,6 +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. @@ -95,12 +108,12 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) * value. */ -#if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES) +#if defined(CONFIG_PPC_SPLPAR) /* We only yield to the hypervisor if we are in shared processor mode */ -#define SHARED_PROCESSOR (get_lppaca()->shared_proc) +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) extern void __spin_yield(arch_spinlock_t *lock); extern void __rw_yield(arch_rwlock_t *lock); -#else /* SPLPAR || ISERIES */ +#else /* SPLPAR */ #define __spin_yield(x) barrier() #define __rw_yield(x) barrier() #define SHARED_PROCESSOR 0 |