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authorJames Morris <jmorris@namei.org>2009-06-30 09:10:35 +1000
committerJames Morris <jmorris@namei.org>2009-06-30 09:10:35 +1000
commitac7242142b03421c96b0a2f8d99f146d075614c2 (patch)
treeb0b2ead65858c7a343d38affed86fe815e37e7e9 /arch/blackfin/include/asm/atomic.h
parent89c86576ecde504da1eeb4f4882b2189ac2f9c4a (diff)
parent2bfdd79eaa0043346e773ba5f6cfd811ea31b73d (diff)
Merge branch 'master' into next
Diffstat (limited to 'arch/blackfin/include/asm/atomic.h')
-rw-r--r--arch/blackfin/include/asm/atomic.h109
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