On Sat, Nov 05, 2016 at 12:04:45AM -0400, Chris Metcalf wrote:
> A bunch of people got together this week at the Linux Plumbers
> Conference to discuss nohz_full, task isolation, and related stuff.
> (Thanks to Thomas for getting everyone gathered at one place and time!)
Which reminds me...
One s
On Mon, 7 Nov 2016 17:55:47 +0100 (CET)
Thomas Gleixner wrote:
> On Sat, 5 Nov 2016, Chris Metcalf wrote:
> > == Remote statistics ==
> >
> > We discussed the possibility of remote statistics gathering, i.e. load
> > average etc. The idea would be that we could have housekeeping
> > core(s) per
On Wed, Nov 9, 2016 at 8:52 PM, Paul E. McKenney
wrote:
> On Wed, Nov 09, 2016 at 05:44:02PM -0800, Andy Lutomirski wrote:
>> On Wed, Nov 9, 2016 at 9:38 AM, Paul E. McKenney
>> wrote:
>>
>> Are you planning on changing rcu_nmi_enter()? It would make it easier
>> to figure out how they interact
On Wed, Nov 09, 2016 at 08:52:13PM -0800, Paul E. McKenney wrote:
> On Wed, Nov 09, 2016 at 05:44:02PM -0800, Andy Lutomirski wrote:
> > On Wed, Nov 9, 2016 at 9:38 AM, Paul E. McKenney
> > wrote:
> >
> > Are you planning on changing rcu_nmi_enter()? It would make it easier
> > to figure out how
On Wed, Nov 09, 2016 at 05:44:02PM -0800, Andy Lutomirski wrote:
> On Wed, Nov 9, 2016 at 9:38 AM, Paul E. McKenney
> wrote:
>
> Are you planning on changing rcu_nmi_enter()? It would make it easier
> to figure out how they interact if I could see the code.
It already calls rcu_dynticks_eqs_exi
On Wed, Nov 9, 2016 at 9:38 AM, Paul E. McKenney
wrote:
Are you planning on changing rcu_nmi_enter()? It would make it easier
to figure out how they interact if I could see the code.
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index dbf20b058f48..342c8ee402d6 100644
> --- a/kernel/rc
On Wed, Nov 09, 2016 at 06:57:43PM +, Will Deacon wrote:
> Hi Paul,
>
> Just a couple of comments, but they be more suited to Andy.
>
> On Wed, Nov 09, 2016 at 09:38:08AM -0800, Paul E. McKenney wrote:
> > @@ -355,10 +373,33 @@ static bool rcu_dynticks_in_eqs_since(struct
> > rcu_dynticks *r
Hi Paul,
Just a couple of comments, but they be more suited to Andy.
On Wed, Nov 09, 2016 at 09:38:08AM -0800, Paul E. McKenney wrote:
> @@ -355,10 +373,33 @@ static bool rcu_dynticks_in_eqs_since(struct
> rcu_dynticks *rdtp, int snap)
> static void rcu_dynticks_momentary_idle(void)
> {
>
On Wed, Nov 09, 2016 at 03:14:35AM -0800, Andy Lutomirski wrote:
> On Tue, Nov 8, 2016 at 5:40 PM, Paul E. McKenney
> wrote:
Thank you for the review and comments!
> > commit 49961e272333ac720ac4ccbaba45521bfea259ae
> > Author: Paul E. McKenney
> > Date: Tue Nov 8 14:25:21 2016 -0800
> >
> >
On Tue, Nov 8, 2016 at 5:40 PM, Paul E. McKenney
wrote:
> commit 49961e272333ac720ac4ccbaba45521bfea259ae
> Author: Paul E. McKenney
> Date: Tue Nov 8 14:25:21 2016 -0800
>
> rcu: Maintain special bits at bottom of ->dynticks counter
>
> Currently, IPIs are used to force other CPUs to
2016-11-05 4:04 GMT+00:00 Chris Metcalf :
> A bunch of people got together this week at the Linux Plumbers
> Conference to discuss nohz_full, task isolation, and related stuff.
> (Thanks to Thomas for getting everyone gathered at one place and time!)
>
> Here are the notes I took; I welcome any cor
On Sat, Nov 05, 2016 at 12:04:45AM -0400, Chris Metcalf wrote:
> A bunch of people got together this week at the Linux Plumbers
> Conference to discuss nohz_full, task isolation, and related stuff.
> (Thanks to Thomas for getting everyone gathered at one place and time!)
>
> Here are the notes I t
On Mon, 2016-11-07 at 19:36 +0100, Thomas Gleixner wrote:
> On Mon, 7 Nov 2016, Thomas Gleixner wrote:
> >
> > >
> > > == Missing oneshot_stopped callbacks ==
> > >
> > > I raised the issue that various clock_event_device sources don't
> > > always support oneshot_stopped, which can cause an add
On Mon, Nov 07, 2016 at 02:12:13PM -0500, Rik van Riel wrote:
> On Mon, 2016-11-07 at 19:36 +0100, Thomas Gleixner wrote:
> > On Mon, 7 Nov 2016, Thomas Gleixner wrote:
> > >
> > > >
> > > > == Missing oneshot_stopped callbacks ==
> > > >
> > > > I raised the issue that various clock_event_devic
On Mon, 2016-11-07 at 19:16 +, Will Deacon wrote:
> On Mon, Nov 07, 2016 at 02:12:13PM -0500, Rik van Riel wrote:
> >
> > On Mon, 2016-11-07 at 19:36 +0100, Thomas Gleixner wrote:
> > >
> > > On Mon, 7 Nov 2016, Thomas Gleixner wrote:
> > > >
> > > >
> > > > >
> > > > >
> > > > > == Missi
On Mon, 7 Nov 2016, Thomas Gleixner wrote:
> > == Missing oneshot_stopped callbacks ==
> >
> > I raised the issue that various clock_event_device sources don't
> > always support oneshot_stopped, which can cause an additional
> > final interrupt to occur after the timer infrastructure believes the
On Sat, 5 Nov 2016, Chris Metcalf wrote:
> == Remote statistics ==
>
> We discussed the possibility of remote statistics gathering, i.e. load
> average etc. The idea would be that we could have housekeeping
> core(s) periodically iterate over the nohz cores to load their rq
> remotely and do upda
On Sat, 5 Nov 2016, Chris Metcalf wrote:
> Here are the notes I took; I welcome any corrections and follow-up.
Thank you for writing this up. I hope we can now move forward further on
these issues.
> == Remote statistics ==
>
> We discussed the possibility of remote statistics gathering, i.e. lo
A bunch of people got together this week at the Linux Plumbers
Conference to discuss nohz_full, task isolation, and related stuff.
(Thanks to Thomas for getting everyone gathered at one place and time!)
Here are the notes I took; I welcome any corrections and follow-up.
== rcu_nocbs ==
We star
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