From: Arunpravin Paneer Selvam Date: Fri, 11 Apr 2025 09:38:30 +0000 (+0530) Subject: drm/amdgpu: Add queue id support to the user queue wait IOCTL X-Git-Tag: v6.16-rc1~144^2~10^2~137 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4b27406380b0b9ada6b4893bc8f6766dd34fff36;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: Add queue id support to the user queue wait IOCTL Add queue id support to the user queue wait IOCTL drm_amdgpu_userq_wait structure. This is required to retrieve the wait user queue and maintain the fence driver references in it so that the user queue in the same context releases their reference to the fence drivers at some point before queue destruction. Otherwise, we would gather those references until we don't have any more space left and crash. v2: Modify the UAPI comment as per the mesa and libdrm UAPI comment. Libdrm MR: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/408 Mesa MR: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34493 Signed-off-by: Arunpravin Paneer Selvam Suggested-by: Christian König Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c index 0a3032e01c342..ca198360cfdad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c @@ -91,7 +91,6 @@ int amdgpu_userq_fence_driver_alloc(struct amdgpu_device *adev, spin_lock_init(&fence_drv->fence_list_lock); fence_drv->adev = adev; - fence_drv->fence_drv_xa_ptr = &userq->fence_drv_xa; fence_drv->context = dma_fence_context_alloc(1); get_task_comm(fence_drv->timeline_name, current); @@ -611,6 +610,9 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data, u32 num_syncobj, num_read_bo_handles, num_write_bo_handles; struct drm_amdgpu_userq_fence_info *fence_info = NULL; struct drm_amdgpu_userq_wait *wait_info = data; + struct amdgpu_fpriv *fpriv = filp->driver_priv; + struct amdgpu_userq_mgr *userq_mgr = &fpriv->userq_mgr; + struct amdgpu_usermode_queue *waitq; struct drm_gem_object **gobj_write; struct drm_gem_object **gobj_read; struct dma_fence **fences = NULL; @@ -860,6 +862,10 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data, fences[num_fences++] = fence; } + waitq = idr_find(&userq_mgr->userq_idr, wait_info->waitq_id); + if (!waitq) + goto free_fences; + for (i = 0, cnt = 0; i < num_fences; i++) { struct amdgpu_userq_fence_driver *fence_drv; struct amdgpu_userq_fence *userq_fence; @@ -888,14 +894,12 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data, * Otherwise, we would gather those references until we don't * have any more space left and crash. */ - if (fence_drv->fence_drv_xa_ptr) { - r = xa_alloc(fence_drv->fence_drv_xa_ptr, &index, fence_drv, - xa_limit_32b, GFP_KERNEL); - if (r) - goto free_fences; + r = xa_alloc(&waitq->fence_drv_xa, &index, fence_drv, + xa_limit_32b, GFP_KERNEL); + if (r) + goto free_fences; - amdgpu_userq_fence_driver_get(fence_drv); - } + amdgpu_userq_fence_driver_get(fence_drv); /* Store drm syncobj's gpu va address and value */ fence_info[cnt].va = fence_drv->va; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h index 7bbae238cca0b..2af4e0c157732 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h @@ -55,7 +55,6 @@ struct amdgpu_userq_fence_driver { spinlock_t fence_list_lock; struct list_head fences; struct amdgpu_device *adev; - struct xarray *fence_drv_xa_ptr; char timeline_name[TASK_COMM_LEN]; }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c index 4e02d6cc66b53..8f6510b78deee 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c @@ -51,7 +51,6 @@ amdgpu_userqueue_cleanup(struct amdgpu_userq_mgr *uq_mgr, } uq_funcs->mqd_destroy(uq_mgr, queue); - queue->fence_drv->fence_drv_xa_ptr = NULL; amdgpu_userq_fence_driver_free(queue); idr_remove(&uq_mgr->userq_idr, queue_id); kfree(queue); diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h index 284ac25ab5c48..1fd96474e64c0 100644 --- a/include/uapi/drm/amdgpu_drm.h +++ b/include/uapi/drm/amdgpu_drm.h @@ -515,6 +515,12 @@ struct drm_amdgpu_userq_fence_info { }; struct drm_amdgpu_userq_wait { + /** + * @waitq_id: Queue handle used by the userq wait IOCTL to retrieve the + * wait queue and maintain the fence driver references in it. + */ + __u32 waitq_id; + __u32 pad; /** * @syncobj_handles: The list of syncobj handles submitted by the user queue * job to get the va/value pairs.