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rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT

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This commit prevents Kconfig from asking the user about RCU_NOCB_CPU
unless the user really wants to be asked.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Paul E. McKenney 2015-06-02 05:29:18 -07:00
parent 24560056de
commit be55fa2ad2
1 changed files with 1 additions and 0 deletions
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init/Kconfig
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@ -698,6 +698,7 @@ config RCU_BOOST_DELAY
config RCU_NOCB_CPU
bool "Offload RCU callback processing from boot-selected CPUs"
depends on TREE_RCU || PREEMPT_RCU
depends on RCU_EXPERT || NO_HZ_FULL
default n
help
Use this option to reduce OS jitter for aggressive HPC or