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| author | Len Brown <len.brown@intel.com> | 2005-12-06 23:31:30 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-12-06 23:31:30 +0100 |
| commit | 3d5271f9883cba7b54762bc4fe027d4172f06db7 (patch) | |
| tree | ab8a881a14478598a0c8bda0d26c62cdccfffd6d /include/asm-sparc64/atomic.h | |
| parent | [ACPI] 8250_acpi.c buildfix (diff) | |
| parent | Auto-update from upstream (diff) | |
| download | linux-3d5271f9883cba7b54762bc4fe027d4172f06db7.tar.xz linux-3d5271f9883cba7b54762bc4fe027d4172f06db7.zip | |
Pull release into acpica branch
Diffstat (limited to 'include/asm-sparc64/atomic.h')
| -rw-r--r-- | include/asm-sparc64/atomic.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-sparc64/atomic.h b/include/asm-sparc64/atomic.h index e175afcf2cde..3789fe315992 100644 --- a/include/asm-sparc64/atomic.h +++ b/include/asm-sparc64/atomic.h @@ -54,6 +54,7 @@ extern int atomic64_sub_ret(int, atomic64_t *); * other cases. */ #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) +#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) #define atomic64_sub_and_test(i, v) (atomic64_sub_ret(i, v) == 0) @@ -70,6 +71,18 @@ extern int atomic64_sub_ret(int, atomic64_t *); #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) +#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) + +#define atomic_add_unless(v, a, u) \ +({ \ + int c, old; \ + c = atomic_read(v); \ + while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ + c = old; \ + c != (u); \ +}) +#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) + /* Atomic operations are already serializing */ #ifdef CONFIG_SMP #define smp_mb__before_atomic_dec() membar_storeload_loadload(); |