613b00fbe6
The RCU tasks flavors of RCU now need concurrent callback flooding to test their ability to switch between single-queue mode and per-CPU queue mode, but their lack of heavy-duty forward-progress features rules out the use of rcutorture's current callback-flooding code. This commit therefore provides the ability to limit the intensity of the callback floods using a new ->cbflood_max field in the rcu_operations structure. When this field is zero, there is no limit, otherwise, each callback-flood kthread allocates at most ->cbflood_max callbacks. Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>