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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-04-20 05:42:50 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 12:59:03 -0700 |
| commit | 82d0f4c089991e6b302d961f0320282bf91652d7 (patch) | |
| tree | 1ba0f3bd15f4746888499523d86462f1ae054caf | |
| parent | 0f41c0ddadfb3d5baffe62351c380e2881aacd58 (diff) | |
| download | lwn-82d0f4c089991e6b302d961f0320282bf91652d7.tar.gz lwn-82d0f4c089991e6b302d961f0320282bf91652d7.zip | |
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: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
| -rw-r--r-- | init/Kconfig | 4 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 1 |
2 files changed, 2 insertions, 3 deletions
diff --git a/init/Kconfig b/init/Kconfig index dc24dec60232..73db30a76afa 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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 diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index e1af93ae246b..c4e1cf04cf57 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -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 |