[PATCH tip/core/rcu 4/4] rcu: make RCU's CPU-stall detector be default

[Paul E. McKenney]

From: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>

The RCU_CPU_STALL_DETECTOR costs almost nothing and has located some bugs
that might otherwise have been difficult to track down.  Make it be default
for the TREE RCU implementations.  (TINY_RCU does not support CPU-stall
detection, but then again it is a uniprocessor...)

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
 lib/Kconfig.debug |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8911558..50e0e78 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -749,7 +749,7 @@ config RCU_TORTURE_TEST_RUNNABLE
 config RCU_CPU_STALL_DETECTOR
 	bool "Check for stalled CPUs delaying RCU grace periods"
 	depends on TREE_RCU || TREE_PREEMPT_RCU
-	default n
+	default y
 	help
 	  This option causes RCU to printk information on which
 	  CPUs are delaying the current grace period, but only when
-- 
1.5.2.5

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