linux-kernel - Re: sched_setscheduler() vs idle

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Message-ID: <20150528120651.GH3644@twins.programming.kicks-ass.net>
Date:	Thu, 28 May 2015 14:06:51 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <umgwanakikbuti@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	ktkhai@...allels.com
Subject: Re: sched_setscheduler() vs idle_balance() race

On Thu, May 28, 2015 at 02:04:21PM +0200, Mike Galbraith wrote:
> On Thu, 2015-05-28 at 13:51 +0200, Peter Zijlstra wrote:

> > Which is exactly the hole you mean, right?
> 
> Yeah, but that hole is way older than dl.  Box falling into it is
> running SLE11, which is.. well, still somewhat resembles 3.0.

Oh sure, that patch just recognised there was a hole there and put a
comment in. We further failed to spot the fail you just did.

Right mess though, I think I already found some of those 'obvious'
reasons mentioned in the previous email.
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