From: torvalds@transmeta.com (Linus Torvalds)
To: linux-kernel@vger.kernel.org
Subject: Re: [CHECKER] blocking w/ spinlock or interrupt's disabled
Date: 18 Mar 2001 19:24:25 -0800 [thread overview]
Message-ID: <993u59$32k$1@penguin.transmeta.com> (raw)
In-Reply-To: <001801c0af8e$bda30c10$5517fea9@local>
In article <001801c0af8e$bda30c10$5517fea9@local>,
Manfred Spraul <manfred@colorfullife.com> wrote:
>
>Unortunately schedule() with disabled interrupts is a feature, it's
>needed for the old (deprecated and waiting for termination in 2.5)
>sleep_on() functions.
Yes. But that should only cover "sleep_on()" and it's interruptible
cousing "sleep_on_interruptible()". No other blocking call should have
interrupts disabled, I would hope.
The special-case is a fairly specific "some old-style drivers avoid race
conditions by having interrupts disabled over explicit conditional
sleeps", not a generic "you may have interrupts disabled before
blocking".
Linus
next prev parent reply other threads:[~2001-03-19 3:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-18 9:35 [CHECKER] blocking w/ spinlock or interrupt's disabled Manfred Spraul
2001-03-19 2:13 ` Dawson Engler
2001-03-20 19:11 ` george anzinger
2001-03-19 3:24 ` Linus Torvalds [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-03-18 4:23 Dawson Engler
2001-03-23 14:47 ` Kurt Garloff
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