linux-kernel - Re: [RFC v4 2/8] cgroup: gpu: Add a cgroup controller for allocator attribution of GPU memory

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Message-ID: <YkM6/57mVxoNfSvm@slm.duckdns.org>
Date:   Tue, 29 Mar 2022 06:59:43 -1000
From:   Tejun Heo <tj@...nel.org>
To:     "T.J. Mercier" <tjmercier@...gle.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jonathan Corbet <corbet@....net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Christian Brauner <brauner@...nel.org>,
        Hridya Valsaraju <hridya@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Christian König <christian.koenig@....com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Liam Mark <lmark@...eaurora.org>,
        Laura Abbott <labbott@...hat.com>,
        Brian Starkey <Brian.Starkey@....com>,
        John Stultz <john.stultz@...aro.org>,
        Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shuah Khan <shuah@...nel.org>, kaleshsingh@...gle.com,
        Kenny.Ho@....com, mkoutny@...e.com, skhan@...uxfoundation.org,
        dri-devel@...ts.freedesktop.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linaro-mm-sig@...ts.linaro.org, cgroups@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [RFC v4 2/8] cgroup: gpu: Add a cgroup controller for allocator
 attribution of GPU memory

Hello,

On Mon, Mar 28, 2022 at 03:59:41AM +0000, T.J. Mercier wrote:
> The API/UAPI can be extended to set per-device/total allocation limits
> in the future.

This total thing kinda bothers me. Can you please provide some concrete
examples of how this and per-device limits would be used?

Thanks.

-- 
tejun