From: Andreas Schwab <schwab@suse.de>
To: linux-ia64@vger.kernel.org
Subject: Re: atomic_cmpxchg and 64-bit values
Date: Wed, 17 Jan 2007 21:36:19 +0000 [thread overview]
Message-ID: <je4pqps5d8.fsf@sykes.suse.de> (raw)
In-Reply-To: <20070117144850.U8085@pkunk.americas.sgi.com>
Brent Casavant <bcasavan@sgi.com> writes:
> Is there some particular reason we need the cast to int on the
> return path for atomic_cmpxchg()? It looks to me as if this
> macro would work equally well with an atomic_t or an atomic64_t.
No, this is won't work, atomic_cmpxchg is strictly only defined for
atomic_t. See commit 4a6dae6d382e9edf3ff440b819e554ed706359bc.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2007-01-17 21:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-17 20:57 atomic_cmpxchg and 64-bit values Brent Casavant
2007-01-17 21:36 ` Andreas Schwab [this message]
2007-01-18 18:13 ` Christoph Lameter
2007-01-18 23:43 ` Brent Casavant
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