Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule

From	Mike Galbraith <umgwanakikbuti@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule
Date	2016-04-08 14:20 +0200
Message-ID	<rlDyh-3AX-1@gated-at.bofh.it> (permalink)
References	(6 earlier) <rjeE2-1I4-15@gated-at.bofh.it> <rjkgq-5Ym-7@gated-at.bofh.it> <rlli2-6NG-19@gated-at.bofh.it> <rlntw-7U-25@gated-at.bofh.it> <rlBZv-2oe-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Fri, 2016-04-08 at 12:30 +0200, Sebastian Andrzej Siewior wrote:
> On 04/07/2016 09:04 PM, Mike Galbraith wrote:
> > > just to be clear: The patch I attached did _not_ work for you.
> > 
> > Sorry, I didn't test.  Marathon stress test session convinced me that
> > the lock added by -rt absolutely had to die.
> 
> Okay. And the patch did that. I removed the lock.

But also adds when it appears no addition is required.  I don't care
how it dies though, only that it does.

> I see. So what I don't like are all the exceptions you have: one for
> RCU and one kernfs. There might come more in the future. So what I aim
> is the removal of the lock.

Yes, those two were bandaids to allow searching for more -rt specific
disease (none found).  Removing that lock is the cure.

	-Mike

Thread

Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-04-07 18:50 +0200
  Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-07 21:10 +0200
    Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-04-08 12:40 +0200
      Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-08 14:20 +0200
  Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-08 08:40 +0200
  Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-08 15:50 +0200
    Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-04-08 16:00 +0200
      Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-08 16:20 +0200
        Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-04-08 17:00 +0200
          Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-04-08 18:50 +0200

csiph-web