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Commit e72aeafc authored by Pranith Kumar's avatar Pranith Kumar Committed by Paul E. McKenney
Browse files

rcu: Remove prompt for RCU implementation 



The RCU implementation is chosen based on PREEMPT and SMP config options
and is not really a user-selectable choice.  This commit removes the
menu entry, given that there is not much point in calling something a
choice when there is in fact no choice..  The TINY_RCU, TREE_RCU, and
PREEMPT_RCU Kconfig options continue to be selected based solely on the
values of the PREEMPT and SMP options.

Signed-off-by: default avatarPranith Kumar <bobby.prani@gmail.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 26730f55

init/Kconfig

+6 −12
Original line number Diff line number Diff line
@@ -465,13 +465,9 @@ endmenu # "CPU/Task time and stats accounting" 


menu "RCU Subsystem"



choice

	prompt "RCU Implementation"

	default TREE_RCU



config TREE_RCU

	bool "Tree-based hierarchical RCU"

	depends on !PREEMPT && SMP

	bool

	default y if !PREEMPT && SMP

	help

	  This option selects the RCU implementation that is

	  designed for very large SMP system with hundreds or
@@ -479,8 +475,8 @@ config TREE_RCU 
	  smaller systems.



config PREEMPT_RCU

	bool "Preemptible tree-based hierarchical RCU"

	depends on PREEMPT

	bool

	default y if PREEMPT

	help

	  This option selects the RCU implementation that is

	  designed for very large SMP systems with hundreds or
@@ -491,16 +487,14 @@ config PREEMPT_RCU 
	  Select this option if you are unsure.



config TINY_RCU

	bool "UP-only small-memory-footprint RCU"

	depends on !PREEMPT && !SMP

	bool

	default y if !PREEMPT && !SMP

	help

	  This option selects the RCU implementation that is

	  designed for UP systems from which real-time response

	  is not required.  This option greatly reduces the

	  memory footprint of RCU.



endchoice



config RCU_EXPERT

	bool "Make expert-level adjustments to RCU configuration"

	default n