linux-kernel - Re: [PATCH v9 3/8] cpuset: Rebuild root domain deadline accounting information

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Date:   Thu, 25 Jul 2019 16:07:37 +0200
From:   Juri Lelli <juri.lelli@...hat.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     peterz@...radead.org, mingo@...hat.com, rostedt@...dmis.org,
        tj@...nel.org, linux-kernel@...r.kernel.org,
        luca.abeni@...tannapisa.it, claudio@...dence.eu.com,
        tommaso.cucinotta@...tannapisa.it, bristot@...hat.com,
        mathieu.poirier@...aro.org, lizefan@...wei.com, longman@...hat.com,
        dietmar.eggemann@....com, cgroups@...r.kernel.org
Subject: Re: [PATCH v9 3/8] cpuset: Rebuild root domain deadline accounting
 information

Hi,

On 25/07/19 15:56, Ingo Molnar wrote:
> 
> * Ingo Molnar <mingo@...nel.org> wrote:
> 
> > 
> > * Juri Lelli <juri.lelli@...hat.com> wrote:
> > 
> > > When the topology of root domains is modified by CPUset or CPUhotplug
> > > operations information about the current deadline bandwidth held in the
> > > root domain is lost.
> > > 
> > > This patch addresses the issue by recalculating the lost deadline
> > > bandwidth information by circling through the deadline tasks held in
> > > CPUsets and adding their current load to the root domain they are
> > > associated with.
> > > 
> > > Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> > > Signed-off-by: Juri Lelli <juri.lelli@...hat.com>
> > 
> > Was this commit written by Mathieu? If yes then it's missing a From line. 
> > If not then the Signed-off-by should probably be changed to Acked-by or 
> > Reviewed-by?
> 
> So for now I'm assuming that the original patch was written by Mathieu, 
> with modifications by you. So I added his From line and extended the SOB 
> chain with the additional information that you modified the patch:
> 
>     Tested-by: Dietmar Eggemann <dietmar.eggemann@....com>
>     Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
>     Signed-off-by: Juri Lelli <juri.lelli@...hat.com>
>     [ Various additional modifications. ]
>     Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
>     Signed-off-by: Ingo Molnar <mingo@...nel.org>
> 
> Let me know if that's not accurate!

Looks good to me, thanks. And sorry for the confusion.

Best,

Juri