[PATCH 17/17] amdgpu: add support for memory cgroups
Shakeel Butt
shakeel.butt at linux.dev
Wed Jul 2 16:02:53 UTC 2025
On Mon, Jun 30, 2025 at 02:49:36PM +1000, Dave Airlie wrote:
> From: Dave Airlie <airlied at redhat.com>
>
> This adds support for adding a obj cgroup to a buffer object,
> and passing in the placement flags to make sure it's accounted
> properly.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 2 ++
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 13 +++++++++----
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 ++
> 4 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> index e5e33a68d935..d250183bab03 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> @@ -198,6 +198,7 @@ static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
> struct amdgpu_bo *aobj = gem_to_amdgpu_bo(gobj);
>
> amdgpu_hmm_unregister(aobj);
> + obj_cgroup_put(aobj->tbo.objcg);
> ttm_bo_put(&aobj->tbo);
> }
>
> @@ -225,6 +226,7 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
> bp.domain = initial_domain;
> bp.bo_ptr_size = sizeof(struct amdgpu_bo);
> bp.xcp_id_plus1 = xcp_id_plus1;
> + bp.objcg = get_obj_cgroup_from_current();
In what context this function is called? Is that the same for
ttm_pool_alloc_page()? Is remote charging happening in
ttm_pool_alloc_page()?
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