57 /* For process termination handling */
185 	mm = get_task_mm(pdd->process->lead_thread);  in kfd_sdma_activity_worker()
256  * by current process. Translates acquired wave count into number of compute units
284 	proc = pdd->process;  in kfd_get_cu_occupancy()
286 		pr_debug("Gpu-Id: %d has no active queues for process %d\n",  in kfd_get_cu_occupancy()
529 	if (!q || !q->process)  in kfd_procfs_add_queue()
531 	proc = q->process;  in kfd_procfs_add_queue()
736 /* kfd_process_alloc_gpuvm - Allocate GPU VM for the KFD process
737  *	This function should be only called right after the process
790  *	process for IB usage The memory reserved is for KFD to submit
833 	struct kfd_process *process;  in kfd_create_process()  local
846 	 * take kfd processes mutex before starting of process creation  in kfd_create_process()
847 	 * so there won't be a case where two threads of the same process  in kfd_create_process()
853 		pr_debug("KFD is locked! Cannot create process");  in kfd_create_process()
854 		process = ERR_PTR(-EINVAL);  in kfd_create_process()
858 	/* A prior open of /dev/kfd could have already created the process.  in kfd_create_process()
859 	 * find_process will increase process kref in this case  in kfd_create_process()
861 	process = find_process(thread, true);  in kfd_create_process()
862 	if (process) {  in kfd_create_process()
863 		pr_debug("Process already found\n");  in kfd_create_process()
865 		/* If the process just called exec(3), it is possible that the  in kfd_create_process()
867 		 * of the old process image) is still in the cleanup work queue.  in kfd_create_process()
869 		 * resource for this process.  in kfd_create_process()
873 		process = create_process(thread);  in kfd_create_process()
874 		if (IS_ERR(process))  in kfd_create_process()
880 		process->kobj = kfd_alloc_struct(process->kobj);  in kfd_create_process()
881 		if (!process->kobj) {  in kfd_create_process()
885 		ret = kobject_init_and_add(process->kobj, &procfs_type,  in kfd_create_process()
887 					   (int)process->lead_thread->pid);  in kfd_create_process()
890 			kobject_put(process->kobj);  in kfd_create_process()
894 		kfd_sysfs_create_file(process->kobj, &process->attr_pasid,  in kfd_create_process()
897 		process->kobj_queues = kobject_create_and_add("queues",  in kfd_create_process()
898 							process->kobj);  in kfd_create_process()
899 		if (!process->kobj_queues)  in kfd_create_process()
902 		kfd_procfs_add_sysfs_stats(process);  in kfd_create_process()
903 		kfd_procfs_add_sysfs_files(process);  in kfd_create_process()
904 		kfd_procfs_add_sysfs_counters(process);  in kfd_create_process()
906 		init_waitqueue_head(&process->wait_irq_drain);  in kfd_create_process()
912 	return process;  in kfd_create_process()
917 	struct kfd_process *process;  in kfd_get_process()  local
926 	process = find_process(thread, false);  in kfd_get_process()
927 	if (!process)  in kfd_get_process()
930 	return process;  in kfd_get_process()
935 	struct kfd_process *process;  in find_process_by_mm()  local
937 	hash_for_each_possible_rcu(kfd_processes_table, process,  in find_process_by_mm()
939 		if (process->mm == mm)  in find_process_by_mm()
940 			return process;  in find_process_by_mm()
965 /* This increments the process->ref counter. */
988 	struct kfd_process *p = pdd->process;  in kfd_process_device_free_bos()
1060 		pr_debug("Releasing pdd (topology id %d) for process (pasid 0x%x)\n",  in kfd_process_destroy_pdds()
1155 /* No process locking is needed in this function, because the process
1157  * using it any more, otherwise we couldn't safely free the process
1212 	/* This increments p->ref counter if kfd process p exists */  in kfd_process_alloc_notifier()
1315 	 * Move all remaining kfd_process from the process table to a  in kfd_cleanup_processes()
1409 					pdd->process->debug_trap_enabled);  in kfd_process_device_init_cwsr_dgpu()
1458 	 * XNACK mode for this process that's compatible with all GPUs.  in kfd_process_xnack_mode()
1476 		 * per-process XNACK mode selection. But let the dev->noretry  in kfd_process_xnack_mode()
1518 	struct kfd_process *process;  in create_process()  local
1522 	process = kzalloc(sizeof(*process), GFP_KERNEL);  in create_process()
1523 	if (!process)  in create_process()
1526 	kref_init(&process->ref);  in create_process()
1527 	mutex_init(&process->mutex);  in create_process()
1528 	process->mm = thread->mm;  in create_process()
1529 	process->lead_thread = thread->group_leader;  in create_process()
1530 	process->n_pdds = 0;  in create_process()
1531 	process->queues_paused = false;  in create_process()
1532 	INIT_DELAYED_WORK(&process->eviction_work, evict_process_worker);  in create_process()
1533 	INIT_DELAYED_WORK(&process->restore_work, restore_process_worker);  in create_process()
1534 	process->last_restore_timestamp = get_jiffies_64();  in create_process()
1535 	err = kfd_event_init_process(process);  in create_process()
1538 	process->is_32bit_user_mode = in_compat_syscall();  in create_process()
1539 	process->debug_trap_enabled = false;  in create_process()
1540 	process->debugger_process = NULL;  in create_process()
1541 	process->exception_enable_mask = 0;  in create_process()
1542 	atomic_set(&process->debugged_process_count, 0);  in create_process()
1543 	sema_init(&process->runtime_enable_sema, 0);  in create_process()
1545 	process->pasid = kfd_pasid_alloc();  in create_process()
1546 	if (process->pasid == 0) {  in create_process()
1551 	err = pqm_init(&process->pqm, process);  in create_process()
1555 	/* init process apertures*/  in create_process()
1556 	err = kfd_init_apertures(process);  in create_process()
1561 	process->xnack_enabled = kfd_process_xnack_mode(process, false);  in create_process()
1563 	err = svm_range_list_init(process);  in create_process()
1567 	/* alloc_notifier needs to find the process in the hash table */  in create_process()
1568 	hash_add_rcu(kfd_processes_table, &process->kfd_processes,  in create_process()
1569 			(uintptr_t)process->mm);  in create_process()
1574 	kref_get(&process->ref);  in create_process()
1577 	 * because after this point we cannot unwind the process creation.  in create_process()
1579 	 * dropping the last process reference in the free_notifier.  in create_process()
1581 	mn = mmu_notifier_get(&kfd_process_mmu_notifier_ops, process->mm);  in create_process()
1586 	BUG_ON(mn != &process->mmu_notifier);  in create_process()
1588 	kfd_unref_process(process);  in create_process()
1589 	get_task_struct(process->lead_thread);  in create_process()
1591 	INIT_WORK(&process->debug_event_workarea, debug_event_write_work_handler);  in create_process()
1593 	return process;  in create_process()
1596 	hash_del_rcu(&process->kfd_processes);  in create_process()
1597 	svm_range_list_fini(process);  in create_process()
1599 	kfd_process_free_outstanding_kfd_bos(process);  in create_process()
1600 	kfd_process_destroy_pdds(process);  in create_process()
1602 	pqm_uninit(&process->pqm);  in create_process()
1604 	kfd_pasid_free(process->pasid);  in create_process()
1606 	kfd_event_free_process(process);  in create_process()
1608 	mutex_destroy(&process->mutex);  in create_process()
1609 	kfree(process);  in create_process()
1644 	pdd->process = p;  in kfd_create_process_device_data()
1667  * kfd_process_device_init_vm - Initialize a VM for a process-device
1669  * @pdd: The process-device
1701 	p = pdd->process;  in kfd_process_device_init_vm()
1708 		dev_err(dev->adev->dev, "Failed to create process VM object\n");  in kfd_process_device_init_vm()
1744  * Direct the IOMMU to bind the process (specifically the pasid->mm)
1746  * Unbinding occurs when the process dies or the device is removed.
1748  * Assumes that the process lock is held.
1758 		dev_err(dev->adev->dev, "Process device data doesn't exist\n");  in kfd_bind_process_to_device()
1787 /* Create specific handle mapped to mem from process local memory idr
1788  * Assumes that the process lock is held.
1796 /* Translate specific handle from process local memory idr
1797  * Assumes that the process lock is held.
1808 /* Remove specific handle from process local memory idr
1809  * Assumes that the process lock is held.
1818 /* This increments the process->ref counter. */
1839 /* This increments the process->ref counter. */
1855 /* kfd_process_evict_queues - Evict all user queues of a process
1857  * Eviction is reference-counted per process-device. This means multiple
1880 			dev_err(dev, "Failed to evict process queues\n");  in kfd_process_evict_queues()
1913 /* kfd_process_restore_queues - Restore all user queues of a process */
1928 			dev_err(dev, "Failed to restore process queues\n");  in kfd_process_restore_queues()
1987 	/* Process termination destroys this worker thread. So during the  in evict_process_worker()
2038 	/* Process termination destroys this worker thread. So during the  in restore_process_worker()
2046 	 * before KFD BOs are unreserved. If not, the process can be evicted  in restore_process_worker()
2075 			pr_err("Failed to suspend process 0x%x\n", p->pasid);  in kfd_suspend_all_processes()
2089 			pr_err("Restore process %d failed during resume\n",  in kfd_resume_all_processes()
2098 int kfd_reserved_mem_mmap(struct kfd_node *dev, struct kfd_process *process,  in kfd_reserved_mem_mmap()  argument
2109 	pdd = kfd_get_process_device_data(dev, process);  in kfd_reserved_mem_mmap()
2118 			"Error allocating per process CWSR buffer.\n");  in kfd_reserved_mem_mmap()
2124 	/* Mapping pages to user process */  in kfd_reserved_mem_mmap()
2130 /* assumes caller holds process lock. */
2140 	pdd->process->irq_drain_is_open = true;  in kfd_process_drain_interrupts()
2145 	irq_drain_fence[3] = pdd->process->pasid;  in kfd_process_drain_interrupts()
2160 		pdd->process->irq_drain_is_open = false;  in kfd_process_drain_interrupts()
2164 	r = wait_event_interruptible(pdd->process->wait_irq_drain,  in kfd_process_drain_interrupts()
2165 				     !READ_ONCE(pdd->process->irq_drain_is_open));  in kfd_process_drain_interrupts()
2167 		pdd->process->irq_drain_is_open = false;  in kfd_process_drain_interrupts()
2297 		seq_printf(m, "Process %d PASID 0x%x:\n",  in kfd_debugfs_mqds_by_process()