rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT

This commit prevents Kconfig from asking the user about RCU_NOCB_CPU unless the user really wants to be asked. Reported-by: Ingo Molnar <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Thomas Gleixner <[email protected]>
zhudingsuifeng · Jul 22, 2015 · be55fa2 · be55fa2
1 parent 2456005
commit be55fa2
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/init/Kconfig b/init/Kconfig
@@ -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