From: Peter Zijlstra <peterz@infradead.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>,
Matt Fleming <matt@codeblueprint.co.uk>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, Michal Hocko <mhocko@suse.com>
Subject: Re: cpu stopper threads and load balancing leads to deadlock
Date: Thu, 3 May 2018 19:54:56 +0200 [thread overview]
Message-ID: <20180503175456.GI12217@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20180503171850.GL26088@linux.vnet.ibm.com>
On Thu, May 03, 2018 at 10:18:50AM -0700, Paul E. McKenney wrote:
> > + if (per_cpu(rcu_cpu_started, cpu))
>
> I would log a non-splat dmesg the first time this happened, just for my
> future sanity, but otherwise looks fine. I am a bit concerned about
> calls to rcu_cpu_starting() getting sprinkled all through the code.
> Or am I being excessively paranoid?
Don't think so, but lets first see if this at all works. If not we'll
need to figure out something else anyway.
next prev parent reply other threads:[~2018-05-03 17:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-17 14:21 Matt Fleming
2018-04-18 5:47 ` Mike Galbraith
2018-04-19 5:38 ` Mike Galbraith
2018-04-20 9:50 ` Peter Zijlstra
2018-04-24 13:33 ` Matt Fleming
2018-05-03 12:12 ` Mike Galbraith
2018-05-03 12:28 ` Peter Zijlstra
2018-05-03 12:40 ` Mike Galbraith
2018-05-03 12:49 ` Peter Zijlstra
2018-05-03 13:32 ` Mike Galbraith
2018-05-03 13:56 ` Peter Zijlstra
2018-05-03 14:16 ` Mike Galbraith
2018-05-03 14:44 ` Peter Zijlstra
2018-05-03 16:12 ` Paul E. McKenney
2018-05-03 16:45 ` Peter Zijlstra
2018-05-03 17:18 ` Paul E. McKenney
2018-05-03 17:54 ` Peter Zijlstra [this message]
2018-05-03 18:24 ` Paul E. McKenney
2018-05-04 3:38 ` Mike Galbraith
2018-05-15 4:30 ` Mike Galbraith
2018-05-17 14:03 ` Paul E. McKenney
2018-05-17 14:10 ` Mike Galbraith
2018-05-17 14:23 ` Peter Zijlstra
2018-05-17 14:56 ` Paul E. McKenney
2018-05-22 17:05 ` Paul E. McKenney
2018-05-03 14:39 ` Paul E. McKenney
2018-05-03 14:52 ` Peter Zijlstra
2018-05-03 9:24 ` [tip:sched/urgent] stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock tip-bot for Peter Zijlstra
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