1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright 2023 Red Hat 4 */ 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