1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index b0f239e443bc..465d822f3f5d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -619,6 +619,19 @@ config RCU_CPU_STALL_DETECTOR
 
           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
+        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 KPROBES_SANITY_TEST
         bool "Kprobes sanity tests"
         depends on DEBUG_KERNEL