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[PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode

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  [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-02 21:10 +0100
    [PATCH 4/5] cgroup: implement CSS_TASK_ITER_THREADED Tejun Heo <tj@kernel.org> - 2017-02-02 21:10 +0100
    Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Andy Lutomirski <luto@amacapital.net> - 2017-02-02 22:40 +0100
      Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-02 23:00 +0100
        Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Andy Lutomirski <luto@amacapital.net> - 2017-02-03 22:20 +0100
          Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-03 23:00 +0100
        Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-06 11:00 +0100
    Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-03 21:30 +0100
      Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-03 22:10 +0100
        Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-06 14:00 +0100
          Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-09 01:10 +0100
            Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-09 11:30 +0100
              Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-10 17:20 +0100
                Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-10 19:00 +0100
                  Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-12 06:10 +0100
                    Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Mike Galbraith <efault@gmx.de> - 2017-02-12 08:10 +0100
                      Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Mike Galbraith <efault@gmx.de> - 2017-02-13 06:50 +0100
    Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Paul Turner <pjt@google.com> - 2017-02-09 15:10 +0100
      Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Peter Zijlstra <peterz@infradead.org> - 2017-02-09 15:50 +0100
        Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Mike Galbraith <efault@gmx.de> - 2017-02-09 16:20 +0100
        Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Mike Galbraith <efault@gmx.de> - 2017-02-13 06:40 +0100
      Re: [PATCHSET for-4.11] cgroup: implement cgroup v2 thread mode Tejun Heo <tj@kernel.org> - 2017-02-10 17:00 +0100

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#1579418

On Sun, 2017-02-12 at 13:16 -0800, Paul Turner wrote:
> 
> 
> On Thursday, February 9, 2017, Peter Zijlstra <peterz@infradead.org> wrote:
> > On Thu, Feb 09, 2017 at 05:07:16AM -0800, Paul Turner wrote:
> > > The only case that this does not support vs ".threads" would be some
> > > hybrid where we co-mingle threads from different processes (with the
> > > processes belonging to the same node in the hierarchy).  I'm not aware
> > > of any usage that looks like this.
> > 
> > If I understand you right; this is a fairly common thing with RT where
> > we would stuff all the !rt threads of the various processes in a 'misc'
> > bucket.
> > 
> > Similarly, it happens that we stuff the various rt threads of processes
> > in a specific (shared) 'rt' bucket.
> > 
> > So I would certainly not like to exclude that setup.
> > 
> 
> Unless you're using rt groups I'm not sure this one really changes.  
> Whether the "misc" threads exist at the parent level or one below
> should not matter.

(with exclusive cpusets, a mask can exist at one and only one location)

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#1578573

On Thu, Feb 09, 2017 at 05:07:16AM -0800, Paul Turner wrote:
> What are the motivations that you see for forcing this all onto one
> mount-point via .threads sub-tree tags?

So, you wanted rgroup but with /proc interface?  I'm afraid it's too
late for that.

Thanks.

-- 
tejun

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