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author | Ingo Molnar <mingo@elte.hu> | 2008-07-08 06:24:13 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 06:24:13 -0400 |
commit | e3ae0acf59244ecf5b023ec99cef4b6b29d649bc (patch) | |
tree | 02a8bfdcab61677430ecfe04e9e44e1007c35f0e /include/asm-x86/atomic_64.h | |
parent | 4b62ac9a2b859f932afd5625362c927111b7dd9b (diff) | |
parent | e7eb8726d0e144f0925972c4ecee945e91a42753 (diff) |
Merge branch 'x86/uv' into x86/devel
Diffstat (limited to 'include/asm-x86/atomic_64.h')
-rw-r--r-- | include/asm-x86/atomic_64.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-x86/atomic_64.h b/include/asm-x86/atomic_64.h index fe589c153db8..a0095191c02e 100644 --- a/include/asm-x86/atomic_64.h +++ b/include/asm-x86/atomic_64.h | |||
@@ -425,6 +425,32 @@ static inline int atomic64_add_unless(atomic64_t *v, long a, long u) | |||
425 | return c != (u); | 425 | return c != (u); |
426 | } | 426 | } |
427 | 427 | ||
428 | /** | ||
429 | * atomic_inc_short - increment of a short integer | ||
430 | * @v: pointer to type int | ||
431 | * | ||
432 | * Atomically adds 1 to @v | ||
433 | * Returns the new value of @u | ||
434 | */ | ||
435 | static inline short int atomic_inc_short(short int *v) | ||
436 | { | ||
437 | asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v)); | ||
438 | return *v; | ||
439 | } | ||
440 | |||
441 | /** | ||
442 | * atomic_or_long - OR of two long integers | ||
443 | * @v1: pointer to type unsigned long | ||
444 | * @v2: pointer to type unsigned long | ||
445 | * | ||
446 | * Atomically ORs @v1 and @v2 | ||
447 | * Returns the result of the OR | ||
448 | */ | ||
449 | static inline void atomic_or_long(unsigned long *v1, unsigned long v2) | ||
450 | { | ||
451 | asm(LOCK_PREFIX "orq %1, %0" : "+m" (*v1) : "r" (v2)); | ||
452 | } | ||
453 | |||
428 | #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) | 454 | #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) |
429 | 455 | ||
430 | /* These are x86-specific, used by some header files */ | 456 | /* These are x86-specific, used by some header files */ |