Re: [rfc patch 2/2] rt/locking/hotplug: Fix rt_spin_lock_slowlock() migrate_disable() bug

From	Mike Galbraith <umgwanakikbuti@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [rfc patch 2/2] rt/locking/hotplug: Fix rt_spin_lock_slowlock() migrate_disable() bug
Date	2016-04-07 21:10 +0200
Message-ID	<rlntx-7U-31@gated-at.bofh.it> (permalink)
References	(8 earlier) <rkyKl-3D8-5@gated-at.bofh.it> <rkyKl-3D8-3@gated-at.bofh.it> <rkUrx-3zX-25@gated-at.bofh.it> <rl9TC-6RU-39@gated-at.bofh.it> <rlli3-6NG-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, 2016-04-07 at 18:48 +0200, Sebastian Andrzej Siewior wrote:
> On 04/07/2016 06:37 AM, Mike Galbraith wrote:
> > On Wed, 2016-04-06 at 14:00 +0200, Mike Galbraith wrote:
> > > It'll take a hotplug beating seemingly as well as any non-rt kernel,
> > > but big box NAKed it due to jitter, which can mean 1.0 things.. duh.
> > 
> > FWIW, the below turned big box NAK into ACK.  Stressing hotplug over
> > night, iteration completion time went from about 2 1/2 hours with
> > bandaids on the two identified rt sore spots, to an hour and 10 minutes
> > as well for some reason, but whatever..
> 
> Just to be clear. I need #1, #2 from this thread and this below to make
> it work?

The followup to 2/2 replaced 2/2.

	-Mike

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[rfc patch 2/2]  rt/locking/hotplug: Fix rt_spin_lock_slowlock()  migrate_disable() bug Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-05 15:00 +0200
  Re: [rfc patch 2/2]  rt/locking/hotplug: Fix  rt_spin_lock_slowlock() migrate_disable() bug Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-06 14:10 +0200
    Re: [rfc patch 2/2]  rt/locking/hotplug: Fix  rt_spin_lock_slowlock() migrate_disable() bug Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-07 06:40 +0200
      Re: [rfc patch 2/2] rt/locking/hotplug: Fix rt_spin_lock_slowlock()  migrate_disable() bug Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-04-07 18:50 +0200
        Re: [rfc patch 2/2] rt/locking/hotplug: Fix rt_spin_lock_slowlock()  migrate_disable() bug Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-07 21:10 +0200

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