Commit 687d7a96 authored Jul 21, 2010 by Paul E. McKenney

rcu: restrict TREE_RCU to SMP builds with !PREEMPT

Because both TINY_RCU and TREE_PREEMPT_RCU have been in mainline for
several releases, it is time to restrict the use of TREE_RCU to SMP
non-preemptible systems. This reduces testing/validation effort. This
commit is a first step towards driving the selection of RCU implementation
directly off of the SMP and PREEMPT configuration parameters.

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

parent f2e0dd70

init/Kconfig

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -340,6 +340,7 @@ choice

	config TREE_RCU		config TREE_RCU
	bool "Tree-based hierarchical RCU"		bool "Tree-based hierarchical RCU"
			depends on !PREEMPT && SMP
	help		help
	This option selects the RCU implementation that is		This option selects the RCU implementation that is
	designed for very large SMP system with hundreds or		designed for very large SMP system with hundreds or

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