Re: [PATCH] atomic: add *_dec_not_zero
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- To: "Russell King - ARM Linux" <linux@xxxxxxxxxxxxxxxx>
- Subject: Re: [PATCH] atomic: add *_dec_not_zero
- From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
- Date: Sun, 8 May 2011 11:33:48 +0200
- Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, linux-m32r@xxxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linux-cris-kernel@xxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, Chris Metcalf <cmetcalf@xxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>, linux-m68k@xxxxxxxxxxxxxxx, linux-am33-list@xxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
- In-reply-to: <20110508092403.GB27807@xxxxxxxxxxxxxxxxxxxxxx>
- List-id: <linux-ia64.vger.kernel.org>
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Russell King - ARM Linux wrote:
[...]
> Do we need atomic_dec_not_zero() et.al. in every arch header - is there no
> generic header which it could be added to?
Mike Frysinger already tried to answer it in
<BANLkTimctgbto3dsnJ3d3r7NggS0KF9_Sw@xxxxxxxxxxxxxx>:
> that's what asm-generic is for. if the arch isnt using it, it's
> either because the arch needs to convert to it, or they're using SMP
> and asm-generic doesnt yet support that for atomic.h.
>
> for example, the Blackfin port only needed updating for the SMP case.
> in the non-SMP case, we're getting the def from asm-generic/atomic.h.
> -mike
Feel free to change that but I just followed the style used by all other
macros and will not redesign the complete atomic*.h idea.
thanks,
Sven
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