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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2023 Red Hat4 */5 6#include "thread-device.h"7 8/* A registry of threads associated with device id numbers. */9static struct thread_registry device_id_thread_registry;10 11/* Any registered thread must be unregistered. */12void vdo_register_thread_device_id(struct registered_thread *new_thread,13 unsigned int *id_ptr)14{15 vdo_register_thread(&device_id_thread_registry, new_thread, id_ptr);16}17 18void vdo_unregister_thread_device_id(void)19{20 vdo_unregister_thread(&device_id_thread_registry);21}22 23int vdo_get_thread_device_id(void)24{25 const unsigned int *pointer;26 27 pointer = vdo_lookup_thread(&device_id_thread_registry);28 return (pointer != NULL) ? *pointer : -1;29}30 31void vdo_initialize_thread_device_registry(void)32{33 vdo_initialize_thread_registry(&device_id_thread_registry);34}35