Messages in this thread Patch in this message | | | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 09/12] rcu: Break dependency of RCU_FANOUT_LEAF on RCU_FANOUT | Date | Tue, 21 Apr 2015 12:55:50 -0700 |
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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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> --- init/Kconfig | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig index aa68d72fe051..35559e07db18 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -599,9 +599,11 @@ 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 64 if 64BIT + default 32 if !64BIT default 16 help This option controls the leaf-level fanout of hierarchical -- 1.8.1.5
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