[PATCH tip/core/rcu 19/24] rcu: Break dependency of RCU_FANOUT_LEAF on RCU_FANOUT

From: Paul E. McKenney
Date: Tue May 12 2015 - 18:32:33 EST


From: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>

RCU_FANOUT_LEAF's range and default values depend on the value of
RCU_FANOUT, which at the time seemed like a cute way to save two lines
of Kconfig code. However, adding a dependency from both of these
Kconfig parameters on RCU_EXPERT requires that RCU_FANOUT_LEAF operate
correctly even if RCU_FANOUT is undefined. This commit therefore
allows RCU_FANOUT_LEAF to take on the full range of permitted values,
even in cases where RCU_FANOUT is undefined.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
[ paulmck: Eliminate redundant "default" as suggested by Pranith Kumar. ]
Reviewed-by: Pranith Kumar <bobby.prani@xxxxxxxxx>
---
init/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 7eb4c7b3543c..ac5386937d37 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -601,8 +601,8 @@ config RCU_FANOUT

config RCU_FANOUT_LEAF
int "Tree-based hierarchical RCU leaf-level fanout value"
- range 2 RCU_FANOUT if 64BIT
- range 2 RCU_FANOUT if !64BIT
+ range 2 64 if 64BIT
+ range 2 32 if !64BIT
depends on TREE_RCU || PREEMPT_RCU
default 16
help
--
1.8.1.5

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