From 3af81440a9b02e2c6e244539ee567063c3d62292 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 31 Jan 2018 16:03:19 +0100 Subject: drm/amdgpu: cache the fence to wait for a VMID MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Beneficial when a lot of processes are waiting for VMIDs. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c index 156e026046b5..7d2805729c20 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c @@ -205,6 +205,9 @@ static int amdgpu_vmid_grab_idle(struct amdgpu_vm *vm, unsigned i; int r; + if (ring->vmid_wait && !dma_fence_is_signaled(ring->vmid_wait)) + return amdgpu_sync_fence(adev, sync, ring->vmid_wait, false); + fences = kmalloc_array(sizeof(void *), id_mgr->num_ids, GFP_KERNEL); if (!fences) return -ENOMEM; @@ -239,9 +242,9 @@ static int amdgpu_vmid_grab_idle(struct amdgpu_vm *vm, } r = amdgpu_sync_fence(adev, sync, &array->base, false); - dma_fence_put(&array->base); + dma_fence_put(ring->vmid_wait); + ring->vmid_wait = &array->base; return r; - } kfree(fences); -- cgit v1.2.1