Message-ID: <42523F5D.7020201@yahoo.com.au>
Date: Tue, 05 Apr 2005 17:33:49 +1000
From: Nick Piggin <nickpiggin@yahoo.com.au>
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To: Andrew Morton <akpm@osdl.org>
CC: linux-kernel@vger.kernel.org
Subject: Re: 2.6.12-rc2-mm1
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Andrew Morton wrote:

> +sched-remove-unnecessary-sched-domains.patch
> +sched-improve-pinned-task-handling-again.patch
[snip]
> 
>  CPU scheduler updates
> 

It is no problem that you picked these up for testing. But
don't merge them yet, please.

Suresh's underlying problem with the unnecessary sched domains
is a failing of sched-balance-exec and sched-balance-fork, which
I am working on now.

Removing unnecessary domains is a nice optimisation, but just
needs to account for a few more flags before declaring that a
domain is unnecessary (not to mention this probably breaks if
isolcpus= is used). I have made some modifications to the patch
to fix these problems.

Lastly, I'd like to be a bit less intrusive with pinned task
handling improvements. I think we can do this while still being
effective in preventing livelocks.

I will keep you posted with regards to the various scheduler
patches.

-- 
SUSE Labs, Novell Inc.

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