linux-kernel - Re: [PATCH] sched: Do not stop cpu in set_cpus_allowed

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Date:	Mon, 15 Sep 2014 13:37:47 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Kirill Tkhai <ktkhai@...allels.com>
Cc:	Preeti Murthy <preeti.lkml@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>, Kirill Tkhai <tkhai@...dex.ru>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Subject: Re: [PATCH] sched: Do not stop cpu in set_cpus_allowed_ptr() if task
 is not running

On Mon, Sep 15, 2014 at 02:02:30PM +0400, Kirill Tkhai wrote:
> Hi, Preeti,
> 
> В Пн, 15/09/2014 в 15:18 +0530, Preeti Murthy пишет:
> > Hi Kirill,
> > 
> > Which tree is this patch based on? __migrate_task() does a
> > double_rq_lock/unlock() today in mainline, doesn't it? I don't
> > however see that in your patch.
> 
> it's based on recent tip tree:
> https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/
> 
> Also, once I received a build-robot message about my patch
> makes warning on allyesconfig, and since that time I learned
> about Peter's tree :) 
> 
> https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git
> 
> (This is for info, I don't know if it is right to make patches
> based on in. But really good if you was away for some time
> and you're interested in recent news without lkml archive reading.
> I use it :)

Its mostly a scratch tree to get some build coverage and to show people
what all is queued up in my quilt tree. The tree is fully recreated
every time I export my queue and at times I forget to export.

So feel free to look at, but basing work on it might not be the bestest
idea. Ideally things should find their way into -tip fairly quickly (or
get dropped on the ground if they come apart, but that usually goes
paired with an email telling you about the borkage).
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