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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- Follow-Ups:
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Russell King <[email protected]>
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- References:
- [PATCH 1/5] atomic: introduce atomic_cmpxchg
- From: Nick Piggin <[email protected]>
- [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Nick Piggin <[email protected]>
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Roman Zippel <[email protected]>
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Nick Piggin <[email protected]>
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Roman Zippel <[email protected]>
- Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- From: Russell King <[email protected]>
- [PATCH 1/5] atomic: introduce atomic_cmpxchg
- Prev by Date: Re: [OT] Starting studying linux kernel
- Next by Date: Re: [OT] Starting studying linux kernel
- Previous by thread: Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- Next by thread: Re: [PATCH 2/5] atomic: introduce atomic_inc_not_zero
- Index(es):
