diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3062-drm-amdgpu-minor-optimize-VM-moved-handling-v2.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3062-drm-amdgpu-minor-optimize-VM-moved-handling-v2.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3062-drm-amdgpu-minor-optimize-VM-moved-handling-v2.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3062-drm-amdgpu-minor-optimize-VM-moved-handling-v2.patch new file mode 100644 index 00000000..3e2a5d62 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3062-drm-amdgpu-minor-optimize-VM-moved-handling-v2.patch @@ -0,0 +1,59 @@ +From c307a4b0ec647b4e0e883c001191e0890def8727 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com> +Date: Fri, 1 Sep 2017 20:34:27 +0200 +Subject: [PATCH 3062/4131] drm/amdgpu: minor optimize VM moved handling v2 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Try to lock moved BOs if it's successful we can update the +PTEs directly to the new location. + +v2: rebase + +Signed-off-by: Christian König <christian.koenig@amd.com> +Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +index cccfbc9..61911c7 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +@@ -1728,18 +1728,31 @@ int amdgpu_vm_handle_moved(struct amdgpu_device *adev, + spin_lock(&vm->status_lock); + while (!list_empty(&vm->moved)) { + struct amdgpu_bo_va *bo_va; ++ struct reservation_object *resv; + + bo_va = list_first_entry(&vm->moved, + struct amdgpu_bo_va, base.vm_status); + spin_unlock(&vm->status_lock); + ++ resv = bo_va->base.bo->tbo.resv; ++ + /* Per VM BOs never need to bo cleared in the page tables */ +- clear = bo_va->base.bo->tbo.resv != vm->root.base.bo->tbo.resv; ++ if (resv == vm->root.base.bo->tbo.resv) ++ clear = false; ++ /* Try to reserve the BO to avoid clearing its ptes */ ++ else if (reservation_object_trylock(resv)) ++ clear = false; ++ /* Somebody else is using the BO right now */ ++ else ++ clear = true; + + r = amdgpu_vm_bo_update(adev, bo_va, clear); + if (r) + return r; + ++ if (!clear && resv != vm->root.base.bo->tbo.resv) ++ reservation_object_unlock(resv); ++ + spin_lock(&vm->status_lock); + } + spin_unlock(&vm->status_lock); +-- +2.7.4 + |