Date: Fri, 3 Dec 2010 21:50:03 +0530
From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
To: Rik van Riel <riel@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, Avi Kiviti <avi@redhat.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>, Ingo Molnar <mingo@elte.hu>,
        Anthony Liguori <aliguori@linux.vnet.ibm.com>
Subject: Re: [RFC PATCH 2/3] sched: add yield_to function
Message-ID: <20101203162003.GA13515@linux.vnet.ibm.com>
Reply-To: vatsa@linux.vnet.ibm.com
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On Fri, Dec 03, 2010 at 10:35:25AM -0500, Rik van Riel wrote:
> Do you have suggestions on what I should do to make
> this yield_to functionality work?

Keeping in mind the complications of yield_to, I had suggested we do something
suggested below:

http://marc.info/?l=kvm&m=129122645006996&w=2

Essentially yield to other tasks on your own runqueue and when you get to run
again, try reclaiming what you gave up earlier (with a cap on how much one can
feedback this relinquished time). It can be accomplished via a special form of 
yield(), available only to in-kernel users, kvm in this case.

- vatsa 
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