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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-02-04 12:35:27 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-02-23 09:04:27 -0800
commitbfefc73aa1d1bad317bccef8a15da39263d3d962 (patch)
tree7eb61b4f1a677785d4cc2fc2570648ac05519cf0 /kernel/torture.c
parent9c029b86098decd4660eec511b8d2d42da3e7dd9 (diff)
downloadlinux-bfefc73aa1d1bad317bccef8a15da39263d3d962.tar.gz
rcutorture: Stop generic kthreads in torture_cleanup()
The specific torture modules (like rcutorture) need to call torture_cleanup() in any case, so this commit makes torture_cleanup() deal with torture_shutdown_cleanup() and torture_stutter_cleanup() so that the specific modules don't have to deal with these details. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/torture.c')
-rw-r--r--kernel/torture.c37
1 files changed, 19 insertions, 18 deletions
diff --git a/kernel/torture.c b/kernel/torture.c
index 871f63611f7f..b26c7b42becd 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -478,20 +478,6 @@ int torture_shutdown_init(int ssecs, void (*cleanup)(void))
EXPORT_SYMBOL_GPL(torture_shutdown_init);
/*
- * Shut down the shutdown task. Say what??? Heh! This can happen if
- * the torture module gets an rmmod before the shutdown time arrives. ;-)
- */
-void torture_shutdown_cleanup(void)
-{
- if (shutdown_task != NULL) {
- VERBOSE_TOROUT_STRING("Stopping torture_shutdown task");
- kthread_stop(shutdown_task);
- }
- shutdown_task = NULL;
-}
-EXPORT_SYMBOL_GPL(torture_shutdown_cleanup);
-
-/*
* Detect and respond to a system shutdown.
*/
static int torture_shutdown_notify(struct notifier_block *unused1,
@@ -513,6 +499,20 @@ static struct notifier_block torture_shutdown_nb = {
};
/*
+ * Shut down the shutdown task. Say what??? Heh! This can happen if
+ * the torture module gets an rmmod before the shutdown time arrives. ;-)
+ */
+static void torture_shutdown_cleanup(void)
+{
+ unregister_reboot_notifier(&torture_shutdown_nb);
+ if (shutdown_task != NULL) {
+ VERBOSE_TOROUT_STRING("Stopping torture_shutdown task");
+ kthread_stop(shutdown_task);
+ }
+ shutdown_task = NULL;
+}
+
+/*
* Variables for stuttering, which means to periodically pause and
* restart testing in order to catch bugs that appear when load is
* suddenly applied to or removed from the system.
@@ -575,7 +575,7 @@ EXPORT_SYMBOL_GPL(torture_stutter_init);
/*
* Cleanup after the torture_stutter kthread.
*/
-void torture_stutter_cleanup(void)
+static void torture_stutter_cleanup(void)
{
if (!stutter_task)
return;
@@ -583,7 +583,6 @@ void torture_stutter_cleanup(void)
kthread_stop(stutter_task);
stutter_task = NULL;
}
-EXPORT_SYMBOL_GPL(torture_stutter_cleanup);
/*
* Initialize torture module. Please note that this is -not- invoked via
@@ -619,7 +618,8 @@ 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.
+ * is detected, otherwise, all kthreads started by functions in this file
+ * will be shut down.
*
* This must be called before the caller starts shutting down its own
* kthreads.
@@ -635,8 +635,9 @@ bool torture_cleanup(void)
}
ACCESS_ONCE(fullstop) = FULLSTOP_RMMOD;
mutex_unlock(&fullstop_mutex);
- unregister_reboot_notifier(&torture_shutdown_nb);
+ torture_shutdown_cleanup();
torture_shuffle_cleanup();
+ torture_stutter_cleanup();
torture_onoff_cleanup();
return false;
}