Re: [PATCH] preemptive kernel for 2.4.19-pre7-ac4

Robert Love (rml@tech9.net)
08 May 2002 09:39:56 -0700


On Wed, 2002-05-08 at 05:32, Tomas Szepe wrote:

> > The preempt-kernel patch for 2.4.19-pre7-ac4 is now available at
> > http://www.kernel.org/pub/linux/kernel/people/rml/preempt-kernel/v2.4/preempt-kernel-rml-2.4.19-pre7-ac4-1.patch
>
> ... applies to -pre8-ac1 as well. Safe to use?

Yep. I sent Alan a few more scheduler updates - if he puts them in
pre8-ac2, that may break the diff but still nothing incompatible.
Always assume (with most patches, really) that if it applies, it is
fine.

An exception would be things like lock-break or low-latency that assume
intricate knowledge of the locking and calling semantics of functions.
If they apply, they should compile and boot, but a deadlock may lurk.
This is partly why these solutions are horrible to maintain or get right
and the preemptible kernel is a wiser long-term solution to latency and
such.

Robert Love

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