From: "Stephen C. Tweedie" <sct@redhat.com>
To: pnilesh@in.ibm.com
Cc: "Eric W. Biederman" <"ebiederm+eric"@ccr.net>, linux-mm@kvack.org
Subject: Re: preemp / nonpreemp
Date: Tue, 18 Apr 2000 10:22:56 +0100 [thread overview]
Message-ID: <20000418102256.J3916@redhat.com> (raw)
In-Reply-To: <CA2568C5.002E89C4.00@d73mta05.au.ibm.com>; from pnilesh@in.ibm.com on Tue, Apr 18, 2000 at 01:50:20PM +0530
Hi,
On Tue, Apr 18, 2000 at 01:50:20PM +0530, pnilesh@in.ibm.com wrote:
>
> Does it mean that I can go and write schedule () in the kernel and it
> should not create any problems ?/* not in handler */
It will be fine: it happens all over the place. It's the standard
mechanism used to sleep on IO events. Preemption implies that a timer
interrupt can forcibly reschedule a kernel task, and that won't ever
happen on current kernels. Voluntary rescheduling, on the other hand,
is quite proper.
--Stephen
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next prev parent reply other threads:[~2000-04-18 9:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-04-18 8:20 preemp / nonpreemp pnilesh
2000-04-18 9:22 ` Stephen C. Tweedie [this message]
[not found] <CA2568C5.002E8BFC.00@d73mta03.au.ibm.com>
2000-04-18 15:03 ` Eric W. Biederman
-- strict thread matches above, loose matches on Subject: below --
2000-04-18 10:49 pnilesh
2000-04-18 11:23 ` Stephen C. Tweedie
2000-04-18 4:12 pnilesh
2000-04-18 6:40 ` Eric W. Biederman
2000-04-18 9:18 ` Stephen C. Tweedie
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