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Commit 82d0f4c0 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Directly drive TASKS_RCU from Kconfig 



Currently, Kconfig will ask the user whether TASKS_RCU should be set.
This is silly because Kconfig already has all the information that it
needs to set this parameter.  This commit therefore directly drives
the value of TASKS_RCU via "select" statements.  Which means that
as subsystems require TASKS_RCU, those subsystems will need to add
"select" statements of their own.

Reported-by: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: default avatarPranith Kumar <bobby.prani@gmail.com>
parent 0f41c0dd

init/Kconfig

+1 −3
Original line number Diff line number Diff line
@@ -509,7 +509,7 @@ config SRCU 
	  sections.



config TASKS_RCU

	bool "Task_based RCU implementation using voluntary context switch"

	bool

	default n

	select SRCU

	help
@@ -517,8 +517,6 @@ config TASKS_RCU 
	  only voluntary context switch (not preemption!), idle, and

	  user-mode execution as quiescent states.



	  If unsure, say N.



config RCU_STALL_COMMON

	def_bool ( TREE_RCU || PREEMPT_RCU || RCU_TRACE )

	help

lib/Kconfig.debug

+1 −0
Original line number Diff line number Diff line
@@ -1233,6 +1233,7 @@ config RCU_TORTURE_TEST 
	depends on DEBUG_KERNEL

	select TORTURE_TEST

	select SRCU

	select TASKS_RCU

	default n

	help

	  This option provides a kernel module that runs torture tests