From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: Slub support with PREEMPT_RT ?
Date: Thu, 18 Nov 2010 09:40:01 +0100
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Cc: Jean-Michel Hautbois <jhautbois@gmail.com>,
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To: Darren Hart <dvhart@linux.intel.com>
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On Wed, 2010-11-17 at 17:23 -0800, Darren Hart wrote:
> On 11/17/2010 08:18 AM, Jean-Michel Hautbois wrote:
> > Hi !
> >
> > I am wondering why SLUB isn't supported with PREEMPT_RT ?
> > I cannot find any info on that except the fact it is not working yet.
> > What do we have to do in order to support it ?
> 
> Peter can answer this better than I can, but it has something to do with 
> all the local_bh_disable() calls not being compatible with the goals of 
> PREEMPT_RT - if I remember correctly.

Nah, its slub doens't use the softirq crap. But its close, you have to
iron out the per-cpu assumptions in the thing. I did a few slub-rt ports
at various times but the thing kept changing too much and I gave up.

I should probably do a new port and hope the thing is more stable now
that the excitement is down or somesuch.