[PATCH 00/49] ttm mem manager refactoring.

Dave Airlie airlied at gmail.com
Mon Aug 3 07:12:58 UTC 2020


On Fri, 31 Jul 2020 at 19:17, Christian König <christian.koenig at amd.com> wrote:
>
> Am 31.07.20 um 06:04 schrieb Dave Airlie:
> > I started pulling on a thread, and it led me down a hole.
>
> We might want to make that hole even bigger :)
>
> How about we rename the ttm_mem_reg into ttm_resource and
> ttm_mem_type_manager into ttm_resource_manager.
>

https://cgit.freedesktop.org/~airlied/linux/log/?h=ttm-refactor-mem-manager-rename

has the series with some stuff moved around but 3 added rename patches
at the end.

ttm_bo_manager -> ttm_range_manager
ttm_mem_type_manager -> ttm_resource_manager
ttm_mem_reg -> ttm_resource.

The one slightly messy one is we have a lot of ttm_mem_reg *mem
(*old_mem or *new_mem).
 I didn't try and rename those, but I could probably do it if we
decided it was really necessary.

I've got to go back and fold in some review comments from people yet
and add r-bs I'll try and get to that tomorrow.

Dave.

> Neither amdgpu's OA/GWS resources nor the IDs in VMGFX are really memory.
>
> In the long term I also want to move the whole address handling into
> each backend.
>
> Going to send comments on the individual patches as well.
>
> > This series refactors the ttm ttm_mem_type_manager object into
> > a driver owned, allocated, subclassaed object.
> >
> > It starts with two minor fixes for some bad assumptions in two drivers.
> >
> > Enables a new init path, ports all the drivers to the new init
> > path, and cleans up the old init path.
> > Enables a new takedown path, ports all the drivers to the new takedown
> > path, and cleans up the old takedown path
> > Wraps all access to the memory managers in the bo_device in a wrapper
> > across all drivers.
> > Make debug callback optional
> > Enables driver to provide their own mem manager objects
> > Subclasses the objects in all drivers and makes them into driver owned object
> > Drops the bo_device arrays of pointers, and some unneeded links and
> > struct members
> > Cleans up one api.
> >
> > I think I'd probably want to merge all this via drm-misc, so if I can collect
> > acks/r-b from driver maintainers that would be good.
> >
> > This is also based on Chrisitan's work to remove init_mem_type, so it won't
> > apply until he's finished getting all of that into drm-misc.
>
> Preparing to push that to drm-misc-next just now.
>
> Regards,
> Christian.
>
> >
> > https://nam11.safelinks.protection.outlook.com/?url=https:%2F%2Fcgit.freedesktop.org%2F~airlied%2Flinux%2Flog%2F%3Fh%3Dttm-refactor-mem-manager&data=02%7C01%7Cchristian.koenig%40amd.com%7Caa32512acf9f4bf455ef08d83506f9d2%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637317651361302583&sdata=2sQt4A48ODl0Nq4P21YG3vRNdhkDZcZp0XHkQ930SAI%3D&reserved=0
> > is the tree I've built this on top off, so it's probably going to get rebased
> > but the code should stay mostly the same.
> >
> > I've done some boot testing on nouveau, and I hope to test it on vmwgfx and
> > amdgpu soon.
> >
> > Dave.
> >
> >
>


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