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    SubjectRe: [RFC PATCH 0/3] new subsystem for compute accelerator devices
    On Mon, Oct 24, 2022 at 01:55:56PM +0200, Thomas Zimmermann wrote:
    > Hi
    >
    > Am 22.10.22 um 23:46 schrieb Oded Gabbay:
    > > In the last couple of months we had a discussion [1] about creating a new
    > > subsystem for compute accelerator devices in the kernel.
    > >
    > > After an analysis that was done by DRM maintainers and myself, and following
    > > a BOF session at the Linux Plumbers conference a few weeks ago [2], we
    > > decided to create a new subsystem that will use the DRM subsystem's code and
    > > functionality. i.e. the accel core code will be part of the DRM subsystem.
    > >
    > > This will allow us to leverage the extensive DRM code-base and
    > > collaborate with DRM developers that have experience with this type of
    > > devices. In addition, new features that will be added for the accelerator
    > > drivers can be of use to GPU drivers as well (e.g. RAS).
    > >
    > > As agreed in the BOF session, the accelerator devices will be exposed to
    > > user-space with a new, dedicated device char files and a dedicated major
    > > number (261), to clearly separate them from graphic cards and the graphic
    > > user-space s/w stack. Furthermore, the drivers will be located in a separate
    > > place in the kernel tree (drivers/accel/).
    > >
    > > This series of patches is the first step in this direction as it adds the
    > > necessary infrastructure for accelerator devices to DRM. The new devices will
    > > be exposed with the following convention:
    > >
    > > device char files - /dev/accel/accel*
    > > sysfs - /sys/class/accel/accel*/
    > > debugfs - /sys/kernel/debug/accel/accel*/
    >
    > I know I'm really late to this discussion, but wouldn't 'compute' be a
    > better name?
    >
    > (I agree that skynet would also be nice :)

    See the summary of the meeting we all held at the Plumbers conference
    about this. "accel" was the "least hated" of all of the options, so I
    think we'll stick with that for now.

    thanks,

    greg k-h

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