rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR

Impact: remove the old CONFIG_RCU_CPU_STALL_DETECTOR

tree_rcu introduce CONFIG_RCU_CPU_STALL_DETECTOR again.

These two are the same exactly except:

 the old one "depends on CLASSIC_RCU"
 the new one "depends on CLASSIC_RCU || TREE_RCU"

This patch remove the old one.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 4c9ae6085c75c4a483bd86e43fcafead3f255450..e770e85f76c7e2ca06030e5a2f9d315515c3c6de 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -631,19 +631,6 @@ config RCU_TORTURE_TEST_RUNNABLE
          Say N here if you want the RCU torture tests to start only
          after being manually enabled via /proc.
 
-config RCU_CPU_STALL_DETECTOR
-       bool "Check for stalled CPUs delaying RCU grace periods"
-       depends on CLASSIC_RCU
-       default n
-       help
-         This option causes RCU to printk information on which
-         CPUs are delaying the current grace period, but only when
-         the grace period extends for excessive time periods.
-
-         Say Y if you want RCU to perform such checks.
-
-         Say N if you are unsure.
-
 config RCU_CPU_STALL_DETECTOR
        bool "Check for stalled CPUs delaying RCU grace periods"
        depends on CLASSIC_RCU || TREE_RCU