From: Christian König Date: Thu, 24 Nov 2022 07:26:40 +0000 (+0100) Subject: drm/amdgpu: generally allow over-commit during BO allocation X-Git-Tag: v6.6.17~5843^2~3^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f9d00a4a8dc8fff951c97b3213f90d6bc7a72175;p=platform%2Fkernel%2Flinux-rpi.git drm/amdgpu: generally allow over-commit during BO allocation We already fallback to a dummy BO with no backing store when we allocate GDS,GWS and OA resources and to GTT when we allocate VRAM. Drop all those workarounds and generalize this for GTT as well. This fixes ENOMEM issues with runaway applications which try to allocate/free GTT in a loop and are otherwise only limited by the CPU speed. The CS will wait for the cleanup of freed up BOs to satisfy the various domain specific limits and so effectively throttle those buggy applications down to a sane allocation behavior again. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Arunpravin Paneer Selvam Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index a0780a4..62e98f1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -113,7 +113,7 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, bp.resv = resv; bp.preferred_domain = initial_domain; bp.flags = flags; - bp.domain = initial_domain; + bp.domain = initial_domain | AMDGPU_GEM_DOMAIN_CPU; bp.bo_ptr_size = sizeof(struct amdgpu_bo); r = amdgpu_bo_create_user(adev, &bp, &ubo); @@ -332,20 +332,10 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, } initial_domain = (u32)(0xffffffff & args->in.domains); -retry: r = amdgpu_gem_object_create(adev, size, args->in.alignment, - initial_domain, - flags, ttm_bo_type_device, resv, &gobj); + initial_domain, flags, ttm_bo_type_device, + resv, &gobj); if (r && r != -ERESTARTSYS) { - if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) { - flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; - goto retry; - } - - if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { - initial_domain |= AMDGPU_GEM_DOMAIN_GTT; - goto retry; - } DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n", size, initial_domain, args->in.alignment, r); } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 974e85d..919bbea 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -581,11 +581,7 @@ int amdgpu_bo_create(struct amdgpu_device *adev, bo->flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE; bo->tbo.bdev = &adev->mman.bdev; - if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA | - AMDGPU_GEM_DOMAIN_GDS)) - amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU); - else - amdgpu_bo_placement_from_domain(bo, bp->domain); + amdgpu_bo_placement_from_domain(bo, bp->domain); if (bp->type == ttm_bo_type_kernel) bo->tbo.priority = 1;