Re: [PATCH] atomic: add *_dec_not_zero
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
- To: Sven Eckelmann <sven@xxxxxxxxxxxxx>
- Subject: Re: [PATCH] atomic: add *_dec_not_zero
- From: Mike Frysinger <vapier.adi@xxxxxxxxx>
- Date: Wed, 4 May 2011 00:44:46 -0400
- Cc: linux-kernel@xxxxxxxxxxxxxxx, David Howells <dhowells@xxxxxxxxxx>, Chris Metcalf <cmetcalf@xxxxxxxxxx>, x86@xxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx, linux-cris-kernel@xxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-m32r@xxxxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, linux-am33-list@xxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx
- In-reply-to: <1304458235-28473-1-git-send-email-sven@xxxxxxxxxxxxx>
- List-id: <linux-ia64.vger.kernel.org>
- References: <1304458235-28473-1-git-send-email-sven@xxxxxxxxxxxxx>
On Tue, May 3, 2011 at 17:30, Sven Eckelmann wrote:
> Introduce an *_dec_not_zero operation. ÂMake 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.
>
> Cc: uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx
>
> --- a/arch/blackfin/include/asm/atomic.h
> +++ b/arch/blackfin/include/asm/atomic.h
> @@ -103,6 +103,7 @@ static inline int atomic_test_mask(int mask, atomic_t *v)
> c != (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)
>
> /*
> * atomic_inc_and_test - increment and test
no opinion on the actual idea, but for the Blackfin pieces:
Acked-by: Mike Frysinger <vapier@xxxxxxxxxx>
-mike
--
To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
[Index of Archives]
[Linux Kernel]
[Sparc Linux]
[DCCP]
[Linux ARM]
[Yosemite News]
[Linux SCSI]
[Linux x86_64]
[Linux for Ham Radio]