On Wed, May 18, 2011 at 09:49:54PM +0200, Sven Eckelmann wrote: > Introduce an *_dec_not_zero operation. Make this a special case of > *_add_unless because batman-adv uses atomic_dec_not_zero in different > places like re-broadcast queue or aggregation queue management. There > are other non-final patches which may also want to use this macro. [...] > --- > This is actually the same patch as before, but I am still waiting for > some (N)Acks for ia64, m32r, s390, sh and generic. [...] > diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h > index d9db138..09972c3 100644 > --- a/arch/s390/include/asm/atomic.h > +++ b/arch/s390/include/asm/atomic.h > @@ -109,6 +109,7 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u) > } > > #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) > +#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) > > #undef __CS_LOOP > > @@ -326,6 +327,7 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) > #define atomic64_dec_return(_v) atomic64_sub_return(1, _v) > #define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0) > #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) > +#define atomic64_dec_not_zero(v) atomic64_add_unless((v), -1, 0) > > #define smp_mb__before_atomic_dec() smp_mb() > #define smp_mb__after_atomic_dec() smp_mb() Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
