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Re: [patch] only-one-cache-query [was Re: [patch] arca-vm-2.2.5]

To: Ingo Molnar <mingo@chiara.csoma.elte.hu>
Subject: Re: [patch] only-one-cache-query [was Re: [patch] arca-vm-2.2.5]
From: Andrea Arcangeli <andrea@e-mind.com>
Date: Wed, 7 Apr 1999 16:08:31 +0200 (CEST)
cc: Mark Hemment <markhe@sco.COM>, Chuck Lever <cel@monkey.org>, linux-kernel@vger.rutgers.edu, linux-mm@kvack.org, Linus Torvalds <torvalds@transmeta.com>, "Stephen C. Tweedie" <sct@redhat.com>
In-Reply-To: <Pine.LNX.3.96.990407154601.30376E-100000@chiara.csoma.elte.hu>
Sender: owner-linux-mm@kvack.org

On Wed, 7 Apr 1999, Ingo Molnar wrote:

>this can be done via an existing variable, kstat.ctxsw, no need to add yet
>another 'have we scheduled' flag. But the whole approach is quite flawed

I just thought about ctxsw but kstat.context_swtch could be not increased
(if next == prev), and if we release the lock we must return finding the
page.

Andrea Arcangeli

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References:
- Re: [patch] only-one-cache-query [was Re: [patch] arca-vm-2.2.5]
  - From: Ingo Molnar <mingo@chiara.csoma.elte.hu>

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