/**
* 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);
}
