From fb70b5888b70b0b50f738fbfc019445493112eb1 Mon Sep 17 00:00:00 2001
From: Jason Wessel <jason.wessel@windriver.com>
Date: Fri, 13 Aug 2010 12:44:04 -0500
Subject: [PATCH] debug_core: stop rcu warnings on kernel resume

When returning from the kernel debugger reset the rcu jiffies_stall
value to prevent the rcu stall detector from sending NMI events which
invoke a stack dump for each cpu in the system.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
---
 kernel/debug/debug_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index c812857d0b8..5a3b04d2049 100644
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -47,6 +47,7 @@
 #include <linux/pid.h>
 #include <linux/smp.h>
 #include <linux/mm.h>
+#include <linux/rcupdate.h>
 
 #include <asm/cacheflush.h>
 #include <asm/byteorder.h>
@@ -474,6 +475,7 @@ static void dbg_touch_watchdogs(void)
 {
 	touch_softlockup_watchdog_sync();
 	clocksource_touch_watchdog();
+	rcu_cpu_stall_reset();
 }
 
 static int kgdb_cpu_enter(struct kgdb_state *ks, struct pt_regs *regs)
-- 
2.39.3