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| author | Len Brown <len.brown@intel.com> | 2005-12-06 17:31:30 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-12-06 17:31:30 -0500 |
| commit | 3d5271f9883cba7b54762bc4fe027d4172f06db7 (patch) | |
| tree | ab8a881a14478598a0c8bda0d26c62cdccfffd6d /include/asm-ia64/atomic.h | |
| parent | 378b2556f4e09fa6f87ff0cb5c4395ff28257d02 (diff) | |
| parent | 9115a6c787596e687df03010d97fccc5e0762506 (diff) | |
| download | kernel-crypto-3d5271f9883cba7b54762bc4fe027d4172f06db7.tar.gz kernel-crypto-3d5271f9883cba7b54762bc4fe027d4172f06db7.tar.xz kernel-crypto-3d5271f9883cba7b54762bc4fe027d4172f06db7.zip | |
Pull release into acpica branch
Diffstat (limited to 'include/asm-ia64/atomic.h')
| -rw-r--r-- | include/asm-ia64/atomic.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h index 874a6f890e7..2fbebf85c31 100644 --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -88,6 +88,18 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) return new; } +#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) + +#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) + #define atomic_add_return(i,v) \ ({ \ int __ia64_aar_i = (i); \ |