diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-15 23:12:58 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-15 23:12:58 +0200 |
commit | 1e09481365ce248dbb4eb06dad70129bb5807037 (patch) | |
tree | c0cff5bef95c8b5e7486f144718ade9a06c284dc /include/asm-x86/atomic_64.h | |
parent | 3e2f69fdd1b00166e7d589bce56b2d36a9e74374 (diff) | |
parent | b9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff) |
Merge branch 'linus' into core/softlockup
Conflicts:
kernel/softlockup.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/atomic_64.h')
-rw-r--r-- | include/asm-x86/atomic_64.h | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/include/asm-x86/atomic_64.h b/include/asm-x86/atomic_64.h index 3e0cd7d3833..a0095191c02 100644 --- a/include/asm-x86/atomic_64.h +++ b/include/asm-x86/atomic_64.h @@ -11,12 +11,6 @@ * resource counting etc.. */ -#ifdef CONFIG_SMP -#define LOCK "lock ; " -#else -#define LOCK "" -#endif - /* * Make sure gcc doesn't try to be clever and move things around * on us. We need to use _exactly_ the address the user gave us, @@ -431,6 +425,32 @@ static inline int atomic64_add_unless(atomic64_t *v, long a, long u) return c != (u); } +/** + * atomic_inc_short - increment of a short integer + * @v: pointer to type int + * + * Atomically adds 1 to @v + * Returns the new value of @u + */ +static inline short int atomic_inc_short(short int *v) +{ + asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v)); + return *v; +} + +/** + * atomic_or_long - OR of two long integers + * @v1: pointer to type unsigned long + * @v2: pointer to type unsigned long + * + * Atomically ORs @v1 and @v2 + * Returns the result of the OR + */ +static inline void atomic_or_long(unsigned long *v1, unsigned long v2) +{ + asm(LOCK_PREFIX "orq %1, %0" : "+m" (*v1) : "r" (v2)); +} + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) /* These are x86-specific, used by some header files */ |