From: Peter Zijlstra <peterz@infradead.org>
To: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Ingo Molnar <mingo@redhat.com>,
USB list <linux-usb@vger.kernel.org>,
Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: Memory barrier needed with wake_up_process()?
Date: Mon, 5 Sep 2016 10:09:33 +0200 [thread overview]
Message-ID: <20160905080933.GW10153@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <8760qdks6s.fsf@linux.intel.com>
On Sat, Sep 03, 2016 at 04:51:07PM +0300, Felipe Balbi wrote:
> > That said, I cannot spot an obvious fail,
>
> okay, but a fail does exist. Any hints on what extra information I could
> capture to help figuring this one out?
More information on which sleep is not waking woudl help I suppose. That
greatly limits the amount of code one has to stare at.
Also, a better picture of all threads involved in the wakeup. Alan seems
to suggest there's multiple CPUs involved in the wakeup.
next prev parent reply other threads:[~2016-09-05 8:09 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-02 18:10 Alan Stern
2016-09-02 18:47 ` Paul E. McKenney
2016-09-02 20:29 ` Alan Stern
2016-09-03 9:07 ` Paul E. McKenney
2016-09-03 12:31 ` Peter Zijlstra
2016-09-03 14:26 ` Alan Stern
2016-09-03 14:49 ` Alan Stern
2016-09-05 8:33 ` Peter Zijlstra
2016-09-05 15:29 ` Alan Stern
2016-09-06 11:36 ` Peter Zijlstra
2016-09-06 11:43 ` Felipe Balbi
2016-09-06 11:49 ` Peter Zijlstra
2016-09-06 12:20 ` Peter Zijlstra
2016-09-06 14:46 ` Alan Stern
2016-09-06 15:05 ` Peter Zijlstra
2016-09-07 10:12 ` Felipe Balbi
2016-09-09 10:36 ` Felipe Balbi
2016-09-09 16:12 ` Alan Stern
2016-09-19 11:11 ` Felipe Balbi
2016-09-19 17:35 ` Alan Stern
2016-09-20 10:12 ` Felipe Balbi
2016-09-20 12:53 ` Felipe Balbi
2016-09-20 14:40 ` Alan Stern
2017-01-16 11:12 ` Felipe Balbi
2017-01-16 17:09 ` Alan Stern
2017-01-16 19:04 ` Felipe Balbi
2017-01-16 19:19 ` Felipe Balbi
2016-09-02 19:18 ` Peter Zijlstra
2016-09-02 20:16 ` Alan Stern
2016-09-02 22:14 ` Peter Zijlstra
2016-09-02 22:16 ` Peter Zijlstra
2016-09-05 9:43 ` Will Deacon
2016-09-06 11:10 ` Peter Zijlstra
2016-09-02 22:16 ` Peter Zijlstra
2016-09-03 6:58 ` Felipe Balbi
2016-09-03 12:19 ` Peter Zijlstra
2016-09-03 13:51 ` Felipe Balbi
2016-09-05 8:09 ` Peter Zijlstra [this message]
2016-09-03 14:16 ` Alan Stern
2016-09-05 8:08 ` Peter Zijlstra
2016-09-05 14:33 ` Alan Stern
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