From: Ingo Molnar <mingo@elte.hu>
To: Arjan van de Ven <arjan@infradead.org>
Cc: joe.korty@ccur.com, Christoph Hellwig <hch@infradead.org>,
akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: Define __raw_read_lock etc for uniprocessor builds
Date: Tue, 24 Jan 2006 22:05:48 +0100 [thread overview]
Message-ID: <20060124210548.GA22294@elte.hu> (raw)
In-Reply-To: <1138128156.2977.73.camel@laptopd505.fenrus.org>
* Arjan van de Ven <arjan@infradead.org> wrote:
> > 2) The _raw versions are intended to be used in places where it is
> > known that preemption is already disabled, so that the overhead of
> > re-disabling/enabling it can be avoided.
>
> that's not true either. If it was, then the name would have been
> different.
indeed. The __raw versions are _not_ to be used by anything else but the
generic spinlock code. (There's one other stray use by PARISC, but that
is justified.)
[ the -rt tree makes use of 'raw_' spinlocks, but they are totally
different things. ]
Ingo
next prev parent reply other threads:[~2006-01-24 21:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-24 18:09 Joe Korty
2006-01-24 18:17 ` Christoph Hellwig
2006-01-24 18:29 ` Joe Korty
2006-01-24 18:32 ` Arjan van de Ven
2006-01-24 18:38 ` Joe Korty
2006-01-24 18:42 ` Arjan van de Ven
2006-01-24 18:59 ` Joe Korty
2006-01-24 21:05 ` Ingo Molnar [this message]
2006-01-24 21:12 ` Ingo Molnar
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