/* Definitions for online/offline exerciser. */
int torture_onoff_init(long ooholdoff, long oointerval);
-void torture_onoff_cleanup(void);
char *torture_onoff_stats(char *page);
bool torture_onoff_failures(void);
/* Task shuffler, which causes CPUs to occasionally go idle. */
void torture_shuffle_task_register(struct task_struct *tp);
int torture_shuffle_init(long shuffint);
-void torture_shuffle_cleanup(void);
/* Shutdown task absorption, for when the tasks cannot safely be killed. */
void torture_shutdown_absorb(const char *title);
/* Initialization and cleanup. */
-
void torture_init_begin(char *ttype, bool v);
void torture_init_end(void);
+bool torture_cleanup(void);
#endif /* __LINUX_TORTURE_H */
int i;
rcutorture_record_test_transition();
- mutex_lock(&fullstop_mutex);
- if (fullstop == FULLSTOP_SHUTDOWN) {
- pr_warn(/* but going down anyway, so... */
- "Concurrent 'rmmod rcutorture' and shutdown illegal!\n");
- mutex_unlock(&fullstop_mutex);
- schedule_timeout_uninterruptible(10);
+ if (torture_cleanup()) {
if (cur_ops->cb_barrier != NULL)
cur_ops->cb_barrier();
return;
}
- fullstop = FULLSTOP_RMMOD;
- mutex_unlock(&fullstop_mutex);
unregister_reboot_notifier(&rcutorture_shutdown_nb);
- torture_shuffle_cleanup(); /* Must be first task cleaned up. */
rcu_torture_barrier_cleanup();
rcu_torture_stall_cleanup();
if (stutter_task) {
kthread_stop(shutdown_task);
}
shutdown_task = NULL;
- torture_onoff_cleanup();
/* Wait for all RCU callbacks to fire. */
/*
* Clean up after online/offline testing.
*/
-void torture_onoff_cleanup(void)
+static void torture_onoff_cleanup(void)
{
#ifdef CONFIG_HOTPLUG_CPU
if (onoff_task == NULL)
/*
* Stop the shuffling.
*/
-void torture_shuffle_cleanup(void)
+static void torture_shuffle_cleanup(void)
{
torture_shuffle_task_unregister_all();
if (shuffler_task) {
mutex_unlock(&fullstop_mutex);
}
EXPORT_SYMBOL_GPL(torture_init_end);
+
+/*
+ * Clean up torture module. Please note that this is -not- invoked via
+ * the usual module_exit() mechanism, but rather by an explicit call from
+ * the client torture module. Returns true if a race with system shutdown
+ * is detected.
+ *
+ * This must be called before the caller starts shutting down its own
+ * kthreads.
+ */
+bool torture_cleanup(void)
+{
+ mutex_lock(&fullstop_mutex);
+ if (fullstop == FULLSTOP_SHUTDOWN) {
+ pr_warn("Concurrent rmmod and shutdown illegal!\n");
+ mutex_unlock(&fullstop_mutex);
+ schedule_timeout_uninterruptible(10);
+ return true;
+ }
+ fullstop = FULLSTOP_RMMOD;
+ mutex_unlock(&fullstop_mutex);
+ torture_shuffle_cleanup();
+ torture_onoff_cleanup();
+ return false;
+}
+EXPORT_SYMBOL_GPL(torture_cleanup);