Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero

[Roman Zippel <zippel@linux-m68k.org>]

Hi,

On Wed, 14 Sep 2005, Russell King wrote:

> > 	do {
> > 		old = atomic_load_locked(v);
> > 		if (!old)
> > 			break;
> > 		new = old + 1;
> > 	} while (!atomic_store_lock(v, old, new));
> 
> How do you propose architectures which don't have locked loads implement
> this, where the only atomic instruction is an unconditional atomic swap
> between memory and CPU register?

#define atomic_store_lock atomic_cmpxchg

bye, Roman
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