Messages in this thread |  | | From | Daniel Phillips <> | Subject | Re: Linux Preemptive patch success 2.4.10-pre4 + lots of other patches | Date | Fri, 7 Sep 2001 07:19:31 +0200 |
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On September 7, 2001 06:45 am, Robert Love wrote: > On Fri, 2001-09-07 at 00:36, Christoph Lameter wrote: > > Given the minimal nature of the patch I would suggest that it become part > > of 2.4.10 or 11 > > Are you kidding? We will be lucky to see this in during 2.5. > Its a pretty big change. It makes the Linux kernel preemptible.
CONFIG_PREEMPT
> This is a fairly big move, one I don't think any of the major Unices have > done.
The other Unices are at least evenly split, or mostly preemptible. Typically, a more complex strategy is used where spinlocks can sleep after a few spins. This patch is very conservative in that regard, it basically just uses the structure we already have, SMP spinlocks.
> The only reason the patch is not _huge_ is because the Linux > kernel is already setup for concurrency of this nature -- it does SMP. > > I suggest you read > http://www.linuxdevices.com/articles/AT4185744181.html > http://www.linuxdevices.com/articles/AT5152980814.html > http://kpreempt.sourceforge.net > > and my previous threads on this issue, for more informaiton.
Hmm, how did you read those and come to such a different conclusion?
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