diff options
author | James Morris <jmorris@namei.org> | 2009-06-30 09:10:35 +1000 |
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committer | James Morris <jmorris@namei.org> | 2009-06-30 09:10:35 +1000 |
commit | ac7242142b03421c96b0a2f8d99f146d075614c2 (patch) | |
tree | b0b2ead65858c7a343d38affed86fe815e37e7e9 /arch/blackfin/include/asm/atomic.h | |
parent | 89c86576ecde504da1eeb4f4882b2189ac2f9c4a (diff) | |
parent | 2bfdd79eaa0043346e773ba5f6cfd811ea31b73d (diff) |
Merge branch 'master' into next
Diffstat (limited to 'arch/blackfin/include/asm/atomic.h')
-rw-r--r-- | arch/blackfin/include/asm/atomic.h | 109 |
1 files changed, 7 insertions, 102 deletions
diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h index b1d92f13ef9..88f36d599fe 100644 --- a/arch/blackfin/include/asm/atomic.h +++ b/arch/blackfin/include/asm/atomic.h @@ -1,24 +1,21 @@ #ifndef __ARCH_BLACKFIN_ATOMIC__ #define __ARCH_BLACKFIN_ATOMIC__ +#ifndef CONFIG_SMP +# include <asm-generic/atomic.h> +#else + #include <linux/types.h> #include <asm/system.h> /* local_irq_XXX() */ /* * Atomic operations that C can't guarantee us. Useful for * resource counting etc.. - * - * Generally we do not concern about SMP BFIN systems, so we don't have - * to deal with that. - * - * Tony Kou (tonyko@lineo.ca) Lineo Inc. 2001 */ #define ATOMIC_INIT(i) { (i) } #define atomic_set(v, i) (((v)->counter) = i) -#ifdef CONFIG_SMP - #define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter) asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr); @@ -84,100 +81,6 @@ static inline int atomic_test_mask(int mask, atomic_t *v) #define smp_mb__before_atomic_inc() barrier() #define smp_mb__after_atomic_inc() barrier() -#else /* !CONFIG_SMP */ - -#define atomic_read(v) ((v)->counter) - -static inline void atomic_add(int i, atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter += i; - local_irq_restore_hw(flags); -} - -static inline void atomic_sub(int i, atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter -= i; - local_irq_restore_hw(flags); - -} - -static inline int atomic_add_return(int i, atomic_t *v) -{ - int __temp = 0; - unsigned long flags; - - local_irq_save_hw(flags); - v->counter += i; - __temp = v->counter; - local_irq_restore_hw(flags); - - - return __temp; -} - -static inline int atomic_sub_return(int i, atomic_t *v) -{ - int __temp = 0; - unsigned long flags; - - local_irq_save_hw(flags); - v->counter -= i; - __temp = v->counter; - local_irq_restore_hw(flags); - - return __temp; -} - -static inline void atomic_inc(volatile atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter++; - local_irq_restore_hw(flags); -} - -static inline void atomic_dec(volatile atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter--; - local_irq_restore_hw(flags); -} - -static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter &= ~mask; - local_irq_restore_hw(flags); -} - -static inline void atomic_set_mask(unsigned int mask, atomic_t *v) -{ - unsigned long flags; - - local_irq_save_hw(flags); - v->counter |= mask; - local_irq_restore_hw(flags); -} - -/* Atomic operations are already serializing */ -#define smp_mb__before_atomic_dec() barrier() -#define smp_mb__after_atomic_dec() barrier() -#define smp_mb__before_atomic_inc() barrier() -#define smp_mb__after_atomic_inc() barrier() - -#endif /* !CONFIG_SMP */ - #define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) #define atomic_dec_return(v) atomic_sub_return(1,(v)) #define atomic_inc_return(v) atomic_add_return(1,(v)) @@ -210,4 +113,6 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v) #include <asm-generic/atomic-long.h> -#endif /* __ARCH_BLACKFIN_ATOMIC __ */ +#endif + +#endif |