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Date: Thu, 23 Sep 2021 06:01:09 -1000 From: Tejun Heo <tj@...nel.org> To: Xingyou Chen <rockrush@...kwork.org> Cc: Vipin Sharma <vipinsh@...gle.com>, mkoutny@...e.com, jacob.jun.pan@...el.com, rdunlap@...radead.org, thomas.lendacky@....com, brijesh.singh@....com, jon.grimm@....com, eric.vantassell@....com, pbonzini@...hat.com, hannes@...xchg.org, frankja@...ux.ibm.com, borntraeger@...ibm.com, brian.welty@...el.com, corbet@....net, seanjc@...gle.com, vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com, gingell@...gle.com, rientjes@...gle.com, kvm@...r.kernel.org, x86@...nel.org, cgroups@...r.kernel.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v4 0/3] cgroup: New misc cgroup controller On Thu, Sep 23, 2021 at 11:38:49PM +0800, Xingyou Chen wrote: > > Misc controller is a generic controller which can be used by these > > kinds of resources. > > Will we make this dynamic? Let resources be registered via something > like misc_cg_res_{register,unregister}, at compile time or runtime, > instead of hard coded into misc_res_name/misc_res_capacity etc. > > There are needs as noted in drmcg session earlier this year. We may > make misc cgroup stable, and let device drivers to register their > own resources. Not too likely given that the need for one-off resources for a specific driver seems to indicate lack of proper abstraction and control mechanism more than anything else. Even for cases where there are genuine needs for per-hardware knobs, I think it's prudent to enforce a review cycle which involves people who aren't directly working on the specific driver. Thanks. -- tejun
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