Re: [PATCH] cgroup-v1: freezer: optionally killable freezer

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On Sun, Mar 01, 2020 at 08:20:03AM -0800, Marco Ballesio wrote:
> On Sat, Feb 29, 2020 at 10:43:00AM -0800, Roman Gushchin wrote:
> > On Fri, Feb 28, 2020 at 04:51:31PM -0800, Marco Ballesio wrote:
> > > Hi all,
> > > 
> > > did anyone have time to look into my proposal and, in case, are there
> > > any suggestions, ideas or comments about it?
> > 
> > Hello, Marco!
> > 
> > I'm sorry, somehow I missed the original letter.
> > 
> > In general the cgroup v1 interface is considered frozen. Are there any particular
> > reasons why you want to extend the v1 freezer rather than use the v2 version of it?
> > 
> > You don't even need to fully convert to cgroup v2 in order to do it, some v1
> > controllers can still be used.
> > 
> > Thanks!
> > 
> > Roman
> 
> Hi Roman,
> 
> When compared with backports of v2 features and their dependency chains, this
> patch would be easier to carry in Android common. The potential is to have
> killability for frozen processes on hw currently in use.

I see...

The implementation looks good to me, but I really not sure if adding new control files
to cgroup v1 is a good idea at this point. Are there any plans in the Android world
to move forward to cgroup v2? If not, why not?
If there are any specific issues/dependencies, let's discuss and resolve them.

Thanks!

Roman



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