tree 896b3eaa0bbc48b80ca45b4e01711699e7e1199f
parent 7db21edfecb079b2257ced7a2cf2e32ae5e5d966
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1429550835 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1432756744 -0700

rcu: Convert CONFIG_RCU_FANOUT_EXACT to boot parameter

The CONFIG_RCU_FANOUT_EXACT Kconfig parameter is used primarily (and
perhaps only) by rcutorture to verify that RCU works correctly in specific
rcu_node combining-tree configurations.  It therefore does not make
much sense have this as a question to people attempting to configure
their kernels.  So this commit creates an rcutree.rcu_fanout_exact=
boot parameter that rcutorture can use, and eliminates the original
CONFIG_RCU_FANOUT_EXACT Kconfig parameter.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>