diff options
Diffstat (limited to 'include/asm-mips/atomic.h')
| -rw-r--r-- | include/asm-mips/atomic.h | 57 |
1 files changed, 35 insertions, 22 deletions
diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h index 55c37c106ef0..2c8b853376c9 100644 --- a/include/asm-mips/atomic.h +++ b/include/asm-mips/atomic.h @@ -24,10 +24,9 @@ #define _ASM_ATOMIC_H #include <asm/cpu-features.h> +#include <asm/interrupt.h> #include <asm/war.h> -extern spinlock_t atomic_lock; - typedef struct { volatile int counter; } atomic_t; #define ATOMIC_INIT(i) { (i) } @@ -85,9 +84,9 @@ static __inline__ void atomic_add(int i, atomic_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); v->counter += i; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } } @@ -127,9 +126,9 @@ static __inline__ void atomic_sub(int i, atomic_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); v->counter -= i; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } } @@ -173,11 +172,11 @@ static __inline__ int atomic_add_return(int i, atomic_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result += i; v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; @@ -220,11 +219,11 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result -= i; v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; @@ -251,7 +250,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) " subu %0, %1, %3 \n" " bltz %0, 1f \n" " sc %0, %2 \n" + " .set noreorder \n" " beqzl %0, 1b \n" + " subu %0, %1, %3 \n" + " .set reorder \n" " sync \n" "1: \n" " .set mips0 \n" @@ -267,7 +269,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) " subu %0, %1, %3 \n" " bltz %0, 1f \n" " sc %0, %2 \n" + " .set noreorder \n" " beqz %0, 1b \n" + " subu %0, %1, %3 \n" + " .set reorder \n" " sync \n" "1: \n" " .set mips0 \n" @@ -277,18 +282,19 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result -= i; if (result >= 0) v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; } #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) /** * atomic_add_unless - add unless the number is a given value @@ -432,9 +438,9 @@ static __inline__ void atomic64_add(long i, atomic64_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); v->counter += i; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } } @@ -474,9 +480,9 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); v->counter -= i; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } } @@ -520,11 +526,11 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result += i; v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; @@ -567,11 +573,11 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result -= i; v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; @@ -598,7 +604,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) " dsubu %0, %1, %3 \n" " bltz %0, 1f \n" " scd %0, %2 \n" + " .set noreorder \n" " beqzl %0, 1b \n" + " dsubu %0, %1, %3 \n" + " .set reorder \n" " sync \n" "1: \n" " .set mips0 \n" @@ -614,7 +623,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) " dsubu %0, %1, %3 \n" " bltz %0, 1f \n" " scd %0, %2 \n" + " .set noreorder \n" " beqz %0, 1b \n" + " dsubu %0, %1, %3 \n" + " .set reorder \n" " sync \n" "1: \n" " .set mips0 \n" @@ -624,12 +636,12 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) } else { unsigned long flags; - spin_lock_irqsave(&atomic_lock, flags); + local_irq_save(flags); result = v->counter; result -= i; if (result >= 0) v->counter = result; - spin_unlock_irqrestore(&atomic_lock, flags); + local_irq_restore(flags); } return result; @@ -713,4 +725,5 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) #define smp_mb__before_atomic_inc() smp_mb() #define smp_mb__after_atomic_inc() smp_mb() +#include <asm-generic/atomic.h> #endif /* _ASM_ATOMIC_H */ |