linux-kernel - Re: [PATCH] smpboot: Add smpboot state variables instead of reusing CPU hotplug states

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Message-ID: <5644A358.6090806@bmw-carit.de>
Date:	Thu, 12 Nov 2015 15:34:00 +0100
From:	Daniel Wagner <daniel.wagner@...-carit.de>
To:	<paulmck@...ux.vnet.ibm.com>
CC:	<linux-kernel@...r.kernel.org>, <xen-devel@...ts.xenproject.org>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] smpboot: Add smpboot state variables instead of reusing
 CPU hotplug states

Hi Paul,

On 11/07/2015 08:17 AM, Paul E. McKenney wrote:
> On Thu, Oct 15, 2015 at 01:32:44PM +0200, Daniel Wagner wrote:
>> The cpu hotplug state machine in smpboot.c is reusing the states from
>> cpu.h. That is confusing when it comes to the CPU_DEAD_FROZEN usage.
>> Paul explained to me that he was in need of an additional state
>> for destinguishing between a CPU error states. For this he just
>> picked CPU_DEAD_FROZEN.
>>
>> 8038dad7e888581266c76df15d70ca457a3c5910 smpboot: Add common code for notification from dying CPU
>> 2a442c9c6453d3d043dfd89f2e03a1deff8a6f06 x86: Use common outgoing-CPU-notification code
>>
>> Instead of reusing the states, let's add new definition inside
>> the smpboot.c file with explenation what those states
>> mean. Thanks Paul for providing them.
>>
>> Signed-off-by: Daniel Wagner <daniel.wagner@...-carit.de>
> 
> Apologies for the delay, I didn't realize that you were waiting on me.

No apology needed. I didn't express my wish explicitly. I'll post it
again after the merge window is closed.

> Reviewed-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

Thanks,
Daniel
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