linux-kernel - Re: cpu stopper threads and load balancing leads to deadlock

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Message-ID: <1525351221.9956.4.camel@gmx.de>
Date:   Thu, 03 May 2018 14:40:21 +0200
From:   Mike Galbraith <efault@....de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Matt Fleming <matt@...eblueprint.co.uk>,
        Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
        Michal Hocko <mhocko@...e.com>
Subject: Re: cpu stopper threads and load balancing leads to deadlock

On Thu, 2018-05-03 at 14:28 +0200, Peter Zijlstra wrote:
> 
> Hurm.. I don't see how this is 'new'. We moved the wakeup out from under
> stopper lock, but that should not affect the RCU state.

No, not new, just an additional woes from same spot.

	-Mike