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[199.96.183.179]) by smtp.gmail.com with ESMTPSA id d18sm14065309qtd.85.2021.04.06.07.16.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Apr 2021 07:16:13 -0700 (PDT) Sender: Tejun Heo Date: Tue, 6 Apr 2021 10:16:12 -0400 From: Tejun Heo To: Joel Fernandes Cc: Hao Luo , Peter Zijlstra , "Hyser,Chris" , Josh Don , Ingo Molnar , Vincent Guittot , Valentin Schneider , Mel Gorman , LKML , Thomas Glexiner , Michal =?iso-8859-1?Q?Koutn=FD?= , Christian Brauner , Zefan Li Subject: Re: [PATCH 0/9] sched: Core scheduling interfaces Message-ID: References: <20210401131012.395311786@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Mon, Apr 05, 2021 at 02:46:09PM -0400, Joel Fernandes wrote: > Yeah, its at http://lore.kernel.org/r/20200822030155.GA414063@google.com > as mentioned above, let me know if you need any more details about > usecase. Except for the unspecified reason in usecase 4, I don't see why cgroup is in the picture at all. This doesn't really have much to do with hierarchical resource distribution. Besides, yes, you can use cgroup for logical structuring and identificaiton purposes but in those cases the interactions and interface should be with the original subsystem while using cgroup IDs or paths as parameters - see tracing and bpf for examples. Thanks. -- tejun