diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_exec.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_exec.c | 52 |
1 files changed, 6 insertions, 46 deletions
diff --git a/drivers/gpu/drm/xe/xe_exec.c b/drivers/gpu/drm/xe/xe_exec.c index 79469b76a8be..cc5e0f75de3c 100644 --- a/drivers/gpu/drm/xe/xe_exec.c +++ b/drivers/gpu/drm/xe/xe_exec.c @@ -94,48 +94,16 @@ * Unlock all */ +/* + * Add validation and rebinding to the drm_exec locking loop, since both can + * trigger eviction which may require sleeping dma_resv locks. + */ static int xe_exec_fn(struct drm_gpuvm_exec *vm_exec) { struct xe_vm *vm = container_of(vm_exec->vm, struct xe_vm, gpuvm); - struct drm_gem_object *obj; - unsigned long index; - int num_fences; - int ret; - - ret = drm_gpuvm_validate(vm_exec->vm, &vm_exec->exec); - if (ret) - return ret; - - /* - * 1 fence slot for the final submit, and 1 more for every per-tile for - * GPU bind and 1 extra for CPU bind. Note that there are potentially - * many vma per object/dma-resv, however the fence slot will just be - * re-used, since they are largely the same timeline and the seqno - * should be in order. In the case of CPU bind there is dummy fence used - * for all CPU binds, so no need to have a per-tile slot for that. - */ - num_fences = 1 + 1 + vm->xe->info.tile_count; - /* - * We don't know upfront exactly how many fence slots we will need at - * the start of the exec, since the TTM bo_validate above can consume - * numerous fence slots. Also due to how the dma_resv_reserve_fences() - * works it only ensures that at least that many fence slots are - * available i.e if there are already 10 slots available and we reserve - * two more, it can just noop without reserving anything. With this it - * is quite possible that TTM steals some of the fence slots and then - * when it comes time to do the vma binding and final exec stage we are - * lacking enough fence slots, leading to some nasty BUG_ON() when - * adding the fences. Hence just add our own fences here, after the - * validate stage. - */ - drm_exec_for_each_locked_object(&vm_exec->exec, index, obj) { - ret = dma_resv_reserve_fences(obj->resv, num_fences); - if (ret) - return ret; - } - - return 0; + /* The fence slot added here is intended for the exec sched job. */ + return xe_vm_validate_rebind(vm, &vm_exec->exec, 1); } int xe_exec_ioctl(struct drm_device *dev, void *data, struct drm_file *file) @@ -289,14 +257,6 @@ retry: goto err_exec; } - /* - * Rebind any invalidated userptr or evicted BOs in the VM, non-compute - * VM mode only. - */ - err = xe_vm_rebind(vm, false); - if (err) - goto err_put_job; - /* Wait behind rebinds */ if (!xe_vm_in_lr_mode(vm)) { err = drm_sched_job_add_resv_dependencies(&job->drm, |