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Message-ID: <1332187616.18960.391.camel@twins>
Subject: Re: [RFC][PATCH 00/26] sched/numa
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Avi Kivity <avi@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
        Paul Turner <pjt@google.com>,
        Suresh Siddha <suresh.b.siddha@intel.com>,
        Mike Galbraith <efault@gmx.de>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Lai Jiangshan <laijs@cn.fujitsu.com>, Dan Smith <danms@us.ibm.com>,
        Bharata B Rao <bharata.rao@gmail.com>,
        Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
        Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Date: Mon, 19 Mar 2012 21:06:56 +0100
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On Mon, 2012-03-19 at 14:40 +0100, Andrea Arcangeli wrote:
> > I agree with this, but it's really widespread throughout the kernel,
> > from interrupts to work items to background threads.  It needs to be
> > solved generically (IIRC vhost has some accouting fix for a similar issue).
> 
> Exactly. 

The fact that we all agree its a problem and that nobody has a sane idea
on how to solve it might argue against this.

Also, the fact that there's existing ugly isn't excuse to stop worrying
about it and add more.