[PATCH] drm/amdgpu: Update BO eviction priorities

[Joshi, Mukul]

[AMD Official Use Only - General]

Tested-by and Acked-by: Mukul Joshi <mukul.joshi at amd.com>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Felix
> Kuehling
> Sent: Thursday, April 18, 2024 2:07 PM
> To: amd-gfx at lists.freedesktop.org
> Cc: Joshi, Mukul <Mukul.Joshi at amd.com>; Koenig, Christian
> <Christian.Koenig at amd.com>
> Subject: [PATCH] drm/amdgpu: Update BO eviction priorities
>
> Caution: This message originated from an External Source. Use proper caution
> when opening attachments, clicking links, or responding.
>
>
> Make SVM BOs more likely to get evicted than other BOs. These BOs
> opportunistically use available VRAM, but can fall back relatively seamlessly to
> system memory. It also avoids SVM migrations evicting other, more important
> BOs as they will evict other SVM allocations first.
>
> Signed-off-by: Felix Kuehling <felix.kuehling at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index cd2dd3ed7153..d80671535ab3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -608,6 +608,8 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
>         else
>                 amdgpu_bo_placement_from_domain(bo, bp->domain);
>         if (bp->type == ttm_bo_type_kernel)
> +               bo->tbo.priority = 2;
> +       else if (!(bp->flags & AMDGPU_GEM_CREATE_DISCARDABLE))
>                 bo->tbo.priority = 1;
>
>         if (!bp->destroy)
> --
> 2.34.1