rcutorture: Gracefully handle NULL cleanup hooks
Although most torture tests will have some cleanup hook, it is possible
that one might not. This commit therefore enables graceful handling of
a NULL cleanup hook during torture-test shutdown.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
diff --git a/kernel/torture.c b/kernel/torture.c
index b26c7b4..acc9afc 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -454,7 +454,10 @@
VERBOSE_TOROUT_STRING("torture_shutdown task shutting down system");
shutdown_task = NULL; /* Avoid self-kill deadlock. */
- torture_shutdown_hook();/* Shut down the enclosing torture test. */
+ if (torture_shutdown_hook)
+ torture_shutdown_hook();
+ else
+ VERBOSE_TOROUT_STRING("No torture_shutdown_hook(), skipping.");
kernel_power_off(); /* Shut down the system. */
return 0;
}