linux-kernel - Re: [PATCH v4 0/6] sched: use runnable load based balance

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Message-ID: <20130508161102.GB8459@dyad.programming.kicks-ass.net>
Date:	Wed, 8 May 2013 18:11:02 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alex Shi <alex.shi@...el.com>
Cc:	mingo@...hat.com, tglx@...utronix.de, akpm@...ux-foundation.org,
	arjan@...ux.intel.com, bp@...en8.de, pjt@...gle.com,
	namhyung@...nel.org, efault@....de, morten.rasmussen@....com,
	vincent.guittot@...aro.org, gregkh@...uxfoundation.org,
	preeti@...ux.vnet.ibm.com, viresh.kumar@...aro.org,
	linux-kernel@...r.kernel.org, len.brown@...el.com,
	rafael.j.wysocki@...el.com, jkosina@...e.cz,
	clark.williams@...il.com, tony.luck@...el.com,
	keescook@...omium.org, mgorman@...e.de, riel@...hat.com
Subject: Re: [PATCH v4 0/6] sched: use runnable load based balance

On Tue, May 07, 2013 at 03:51:14PM +0800, Alex Shi wrote:
> On 05/03/2013 03:55 PM, Alex Shi wrote:
> > 
> >> That should probably look like:
> >>
> >> 	preempt_disable();
> >> 	raw_spin_unlock_irq();
> >> 	preempt_enable_no_resched();
> >> 	schedule();
> >>
> >> Otherwise you might find a performance regression on PREEMPT=y kernels.
> > 
> > Yes, right!
> > Thanks a lot for reminder. The following patch will fix it.
> >>
> 
> Peter, would you like to pick this patch?

There's this huge series from walken that touches the same code.. I'll wait to
see what happens with that.
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