mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-16 06:41:39 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu/userq: caller to take reserv lock for vas_list_cleanup

Browse Source 
In function amdgpu_userq_buffer_vas_list_cleanup, remove the
reservation lock for vm and caller should make sure it's taken
before locking userq_mutex.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sunil Khatri
2026-04-08 17:56:23 +05:30
committed by Alex Deucher
parent 469e6fea09
commit 168178b0cb
1 changed files with 18 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
View File

@@ -312,25 +312,21 @@ static int amdgpu_userq_buffer_vas_list_cleanup(struct amdgpu_device *adev,
{
struct amdgpu_userq_va_cursor *va_cursor, *tmp;
struct amdgpu_bo_va_mapping *mapping;
int r;
r = amdgpu_bo_reserve(queue->vm->root.bo, false);
if (r)
return r;
/* Caller must hold vm->root.bo reservation */
dma_resv_assert_held(queue->vm->root.bo->tbo.base.resv);
list_for_each_entry_safe(va_cursor, tmp, &queue->userq_va_list, list) {
mapping = amdgpu_vm_bo_lookup_mapping(queue->vm, va_cursor->gpu_addr);
if (!mapping) {
r = -EINVAL;
goto err;
return -EINVAL;
}
dev_dbg(adev->dev, "delete the userq:%p va:%llx\n",
queue, va_cursor->gpu_addr);
amdgpu_userq_buffer_va_list_del(mapping, va_cursor);
}
err:
amdgpu_bo_unreserve(queue->vm->root.bo);
return r;
return 0;
}
static int amdgpu_userq_preempt_helper(struct amdgpu_usermode_queue *queue)
@@ -444,8 +440,6 @@ static void amdgpu_userq_cleanup(struct amdgpu_usermode_queue *queue)
/* Wait for mode-1 reset to complete */
down_read(&adev->reset_domain->sem);
/* Drop the userq reference. */
amdgpu_userq_buffer_vas_list_cleanup(adev, queue);
uq_funcs->mqd_destroy(queue);
/* Use interrupt-safe locking since IRQ handlers may access these XArrays */
xa_erase_irq(&adev->userq_doorbell_xa, queue->doorbell_index);
@@ -626,6 +620,9 @@ static int
amdgpu_userq_destroy(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode_queue *queue)
{
struct amdgpu_device *adev = uq_mgr->adev;
struct amdgpu_fpriv *fpriv = uq_mgr_to_fpriv(uq_mgr);
struct amdgpu_vm *vm = &fpriv->vm;
int r = 0;
cancel_delayed_work_sync(&uq_mgr->resume_work);
@@ -633,6 +630,14 @@ amdgpu_userq_destroy(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode_que
/* Cancel any pending hang detection work and cleanup */
cancel_delayed_work_sync(&queue->hang_detect_work);
r = amdgpu_bo_reserve(vm->root.bo, false);
if (r) {
drm_file_err(uq_mgr->file, "Failed to reserve root bo during userqueue destroy\n");
return r;
}
amdgpu_userq_buffer_vas_list_cleanup(adev, queue);
amdgpu_bo_unreserve(vm->root.bo);
mutex_lock(&uq_mgr->userq_mutex);
queue->hang_detect_fence = NULL;
amdgpu_userq_wait_for_last_fence(queue);
@@ -664,7 +669,6 @@ amdgpu_userq_destroy(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode_que
}
amdgpu_userq_cleanup(queue);
mutex_unlock(&uq_mgr->userq_mutex);
pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
return r;
@@ -856,7 +860,9 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
clean_fence_driver:
amdgpu_userq_fence_driver_free(queue);
clean_mapping:
amdgpu_bo_reserve(fpriv->vm.root.bo, true);
amdgpu_userq_buffer_vas_list_cleanup(adev, queue);
amdgpu_bo_unreserve(fpriv->vm.root.bo);
kfree(queue);
return r;
}