/** * cmm_init - Module initialization * * Return value: * 0 on success / other on failure **/ static int cmm_init(void) { int rc = -ENOMEM; if (!firmware_has_feature(FW_FEATURE_CMO)) return -EOPNOTSUPP; if ((rc = register_oom_notifier(&cmm_oom_nb)) < 0) return rc; if ((rc = register_reboot_notifier(&cmm_reboot_nb))) goto out_oom_notifier; if ((rc = cmm_sysfs_register(&cmm_sysdev))) goto out_reboot_notifier; if (cmm_disabled) return rc; cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread"); if (IS_ERR(cmm_thread_ptr)) { rc = PTR_ERR(cmm_thread_ptr); goto out_unregister_sysfs; } return rc; out_unregister_sysfs: cmm_unregister_sysfs(&cmm_sysdev); out_reboot_notifier: unregister_reboot_notifier(&cmm_reboot_nb); out_oom_notifier: unregister_oom_notifier(&cmm_oom_nb); return rc; }
/** * cmm_exit - Module exit * * Return value: * nothing **/ static void cmm_exit(void) { if (cmm_thread_ptr) kthread_stop(cmm_thread_ptr); unregister_oom_notifier(&cmm_oom_nb); cmm_free_pages(loaned_pages); cmm_unregister_sysfs(&cmm_sysdev); }
/** * cmm_exit - Module exit * * Return value: * nothing **/ static void cmm_exit(void) { if (cmm_thread_ptr) kthread_stop(cmm_thread_ptr); unregister_oom_notifier(&cmm_oom_nb); unregister_reboot_notifier(&cmm_reboot_nb); unregister_memory_notifier(&cmm_mem_nb); unregister_memory_isolate_notifier(&cmm_mem_isolate_nb); cmm_free_pages(loaned_pages); cmm_unregister_sysfs(&cmm_dev); }