linux-kernel - Re: [PATCH 2/3] sched,fair: Fix local starvation

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Message-ID: <20160510222306.GB3192@twins.programming.kicks-ass.net>
Date:	Wed, 11 May 2016 00:23:06 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Pavan Kondeti <pkondeti@...eaurora.org>,
	Ben Segall <bsegall@...gle.com>,
	Matt Fleming <matt@...eblueprint.co.uk>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Paul Turner <pjt@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>, byungchul.park@....com,
	Andrew Hunter <ahh@...gle.com>,
	Mike Galbraith <mgalbraith@...e.de>
Subject: Re: [PATCH 2/3] sched,fair: Fix local starvation

On Tue, May 10, 2016 at 10:21:39PM +0200, Ingo Molnar wrote:
> 
> * Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > Mike reported that the recent commit 3a47d5124a95 ("sched/fair: Fix
> > fairness issue on migration") broke interactivity and the signal
> > starve test.
> 
> This looks pretty dangerous for v4.6 - how about simply reverting in 3a47d5124a95 
> and re-trying in v4.7?

Sure.