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-rw-r--r--init/Kconfig4
1 files changed, 3 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index a5e90e139ba5..fb19b46c0042 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -453,7 +453,7 @@ config TREE_RCU
config TREE_PREEMPT_RCU
bool "Preemptible tree-based hierarchical RCU"
- depends on PREEMPT && SMP
+ depends on PREEMPT
help
This option selects the RCU implementation that is
designed for very large SMP systems with hundreds or
@@ -461,6 +461,8 @@ config TREE_PREEMPT_RCU
is also required. It also scales down nicely to
smaller systems.
+ Select this option if you are unsure.
+
config TINY_RCU
bool "UP-only small-memory-footprint RCU"
depends on !PREEMPT && !SMP