On Wed, 11 Jan 2023 at 11:43, Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
>
> Instead of a list of separate busy placement add flags which indicate
> that a placement should only be used when there is room or if we need to
> evict.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 11 +-
> drivers/gpu/drm/drm_gem_vram_helper.c | 2 -
> drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 36 +++---
> drivers/gpu/drm/nouveau/nouveau_bo.c | 59 ++++------
> drivers/gpu/drm/nouveau/nouveau_bo.h | 1 -
> drivers/gpu/drm/qxl/qxl_object.c | 2 -
> drivers/gpu/drm/qxl/qxl_ttm.c | 2 -
> drivers/gpu/drm/radeon/radeon_object.c | 2 -
> drivers/gpu/drm/radeon/radeon_ttm.c | 8 +-
> drivers/gpu/drm/radeon/radeon_uvd.c | 1 -
> drivers/gpu/drm/ttm/ttm_bo.c | 21 ++--
> drivers/gpu/drm/ttm/ttm_resource.c | 73 +++----------
> drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 2 -
> drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 121 ++++++++++-----------
> include/drm/ttm/ttm_placement.h | 10 +-
> include/drm/ttm/ttm_resource.h | 8 +-
> 17 files changed, 134 insertions(+), 231 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 974e85d8b6cc..0995a2f41305 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -201,9 +201,6 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
>
> placement->num_placement = c;
> placement->placement = places;
> -
> - placement->num_busy_placement = c;
> - placement->busy_placement = places;
> }
>
> /**
> @@ -1369,8 +1366,7 @@ vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
> AMDGPU_GEM_DOMAIN_GTT);
>
> /* Avoid costly evictions; only set GTT as a busy placement */
> - abo->placement.num_busy_placement = 1;
> - abo->placement.busy_placement = &abo->placements[1];
> + abo->placements[0].flags |= TTM_PL_FLAG_IDLE;
>
> r = ttm_bo_validate(bo, &abo->placement, &ctx);
> if (unlikely(r == -EBUSY || r == -ERESTARTSYS))
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 677cd7d91687..33cf6e835a68 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -104,23 +104,19 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
> /* Don't handle scatter gather BOs */
> if (bo->type == ttm_bo_type_sg) {
> placement->num_placement = 0;
> - placement->num_busy_placement = 0;
> return;
> }
>
> /* Object isn't an AMDGPU object so ignore */
> if (!amdgpu_bo_is_amdgpu_bo(bo)) {
> placement->placement = &placements;
> - placement->busy_placement = &placements;
> placement->num_placement = 1;
> - placement->num_busy_placement = 1;
> return;
> }
>
> abo = ttm_to_amdgpu_bo(bo);
> if (abo->flags & AMDGPU_GEM_CREATE_DISCARDABLE) {
> placement->num_placement = 0;
> - placement->num_busy_placement = 0;
> return;
> }
>
> @@ -129,13 +125,13 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
> case AMDGPU_PL_GWS:
> case AMDGPU_PL_OA:
> placement->num_placement = 0;
> - placement->num_busy_placement = 0;
> return;
>
> case TTM_PL_VRAM:
> if (!adev->mman.buffer_funcs_enabled) {
> /* Move to system memory */
> amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
> +
> } else if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
> !(abo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) &&
> amdgpu_bo_in_cpu_visible_vram(abo)) {
> @@ -150,8 +146,7 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
> AMDGPU_GEM_DOMAIN_CPU);
> abo->placements[0].fpfn = adev->gmc.visible_vram_size >> PAGE_SHIFT;
> abo->placements[0].lpfn = 0;
> - abo->placement.busy_placement = &abo->placements[1];
> - abo->placement.num_busy_placement = 1;
> + abo->placements[0].flags |= TTM_PL_FLAG_IDLE;
> } else {
> /* Move to GTT memory */
> amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT |
> @@ -923,8 +918,6 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
> /* allocate GART space */
> placement.num_placement = 1;
> placement.placement = &placements;
> - placement.num_busy_placement = 1;
> - placement.busy_placement = &placements;
> placements.fpfn = 0;
> placements.lpfn = adev->gmc.gart_size >> PAGE_SHIFT;
> placements.mem_type = TTM_PL_TT;
> diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
> index d40b3edb52d0..f46792b757f9 100644
> --- a/drivers/gpu/drm/drm_gem_vram_helper.c
> +++ b/drivers/gpu/drm/drm_gem_vram_helper.c
> @@ -147,7 +147,6 @@ static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
> invariant_flags = TTM_PL_FLAG_TOPDOWN;
>
> gbo->placement.placement = gbo->placements;
> - gbo->placement.busy_placement = gbo->placements;
>
> if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM) {
> gbo->placements[c].mem_type = TTM_PL_VRAM;
> @@ -160,7 +159,6 @@ static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
> }
>
> gbo->placement.num_placement = c;
> - gbo->placement.num_busy_placement = c;
>
> for (i = 0; i < c; ++i) {
> gbo->placements[i].fpfn = 0;
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> index d409a77449a3..dc483d601cf9 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> @@ -65,8 +65,6 @@ static const struct ttm_place sys_placement_flags = {
> static struct ttm_placement i915_sys_placement = {
> .num_placement = 1,
> .placement = &sys_placement_flags,
> - .num_busy_placement = 1,
> - .busy_placement = &sys_placement_flags,
> };
>
> /**
> @@ -154,32 +152,27 @@ i915_ttm_place_from_region(const struct intel_memory_region *mr,
>
> static void
> i915_ttm_placement_from_obj(const struct drm_i915_gem_object *obj,
> - struct ttm_place *requested,
> - struct ttm_place *busy,
> + struct ttm_place *places,
> struct ttm_placement *placement)
> {
> unsigned int num_allowed = obj->mm.n_placements;
> unsigned int flags = obj->flags;
> unsigned int i;
>
> - placement->num_placement = 1;
> i915_ttm_place_from_region(num_allowed ? obj->mm.placements[0] :
> - obj->mm.region, requested, obj->bo_offset,
> + obj->mm.region, &places[0], obj->bo_offset,
> obj->base.size, flags);
Do we also need places[0].flags |= TTM_PL_FLAG_IDLE somewhere here?
Series doesn't seem to apply to drm-tip, so no intel-gfx CI. Would it
be possible to have a version that applies to drm-tip, just so we can
verify the i915 bits? We could send it to trybot[1] just to get some
CI results?
[1] https://patchwork.freedesktop.org/project/intel-gfx-trybot/series/?ordering=-last_updated
