linux-kernel - Re: [PATCH RFC - TAKE TWO - 02/12] block, bfq: add full hierarchical scheduling and cgroups support

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Message-Id: <1AE5EFA9-79A1-418A-8EF1-55764B8AA3BA@unimore.it>
Date:	Fri, 30 May 2014 23:49:24 +0200
From:	Paolo Valente <paolo.valente@...more.it>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jens Axboe <axboe@...nel.dk>, Li Zefan <lizefan@...wei.com>,
	Fabio Checconi <fchecconi@...il.com>,
	Arianna Avanzini <avanzini.arianna@...il.com>,
	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org
Subject: Re: [PATCH RFC - TAKE TWO - 02/12] block, bfq: add full hierarchical scheduling and cgroups support


Il giorno 30/mag/2014, alle ore 17:39, Tejun Heo <tj@...nel.org> ha scritto:

> On Fri, May 30, 2014 at 11:37:18AM -0400, Tejun Heo wrote:
>> On Thu, May 29, 2014 at 11:05:33AM +0200, Paolo Valente wrote:
>>> diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h
>>> index 768fe44..cdd2528 100644
>>> --- a/include/linux/cgroup_subsys.h
>>> +++ b/include/linux/cgroup_subsys.h
>>> @@ -39,6 +39,10 @@ SUBSYS(net_cls)
>>> SUBSYS(blkio)
>>> #endif
>>> 
>>> +#if IS_ENABLED(CONFIG_CGROUP_BFQIO)
>>> +SUBSYS(bfqio)
>>> +#endif
>> 
>> So, ummm, I don't think this is a good idea.  Why aren't you plugging
>> into the blkcg infrastructure as cfq does?  Why does it need to be a
>> separate controller?
> 
> If there's something which doesn't work for bfq in blkcg, please let
> me know.  I'd be happy to make it work.
> 

This will probably be very useful for us.

Thanks a lot,
Paolo

> Thanks.
> 
> -- 
> tejun


--
Paolo Valente                                                 
Algogroup
Dipartimento di Fisica, Informatica e Matematica		
Via Campi, 213/B
41125 Modena - Italy        				  
homepage:  http://algogroup.unimore.it/people/paolo/

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