rcu: Break dependency of RCU_FANOUT_LEAF on RCU_FANOUT

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@linux.vnet.ibm.com>
[ paulmck: Eliminate redundant "default" as suggested by Pranith Kumar. ]
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>

diff --git a/init/Kconfig b/init/Kconfig
index 7eb4c7b3543c7ba9cf0a1913928aca537e96d5b3..ac5386937d376e3d964b099f665f43ab4cf49f84 100644 (file)
--- 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