Commit bb3bf705 authored Nov 04, 2011 by Paul E. McKenney Committed by Paul E. McKenney Dec 11, 2011

rcu: Control rcutorture startup from kernel boot parameters

Currently, if rcutorture is built into the kernel, it must be manually
started or started from an init script. This is inconvenient for
automated KVM testing, where it is good to be able to fully control
rcutorture execution from the kernel parameters. This patch therefore
adds a module parameter named "rcutorture_runnable" that defaults
to zero ("don't start automatically"), but which can be set to one
to cause rcutorture to start up immediately during boot.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent d5f546d8

kernel/rcutorture.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -164,6 +164,8 @@ static int stutter_pause_test;
		#define RCUTORTURE_RUNNABLE_INIT 0
		#endif
		int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT;
		module_param(rcutorture_runnable, int, 0444);
		MODULE_PARM_DESC(rcutorture_runnable, "Start rcutorture at boot");

		#if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU)
		#define rcu_can_boost() 1