linux-kernel - Re: [RFC] sched: make callers check lock contention for cond_resched

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Date:	Fri, 11 May 2012 07:03:57 +0900
From:	Takuya Yoshikawa <takuya.yoshikawa@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>, mingo@...nel.org
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	kvm@...r.kernel.org, avi@...hat.com, mtosatti@...hat.com,
	yoshikawa.takuya@....ntt.co.jp
Subject: Re: [RFC] sched: make callers check lock contention for
 cond_resched_lock()

Replaced Ingo's address with kernel.org one,

On Thu, 03 May 2012 17:47:30 +0200
Peter Zijlstra <peterz@...radead.org> wrote:

> On Thu, 2012-05-03 at 22:00 +0900, Takuya Yoshikawa wrote:
> > But as I could not see why spin_needbreak() was differently
> > implemented
> > depending on CONFIG_PREEMPT, I wanted to understand the meaning. 
> 
> Its been that way since before voluntary preemption was introduced, so
> its possible Ingo simply missed that spot and nobody noticed until now.
> 
> Ingo, do you have any recollections from back when?

ping

	Takuya
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