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authorJason Wessel <jason.wessel@windriver.com>2010-08-13 12:44:04 -0500
committerJason Wessel <jason.wessel@windriver.com>2010-10-22 15:34:10 -0500
commitfb70b5888b70b0b50f738fbfc019445493112eb1 (patch)
treeee35bfc0e78af0702756d15e05ed09f0f56e18ac
parent16cdc628c3aed47d02205135b7e2f01e0064f566 (diff)
downloadop-kernel-dev-fb70b5888b70b0b50f738fbfc019445493112eb1.zip
op-kernel-dev-fb70b5888b70b0b50f738fbfc019445493112eb1.tar.gz
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>
-rw-r--r--kernel/debug/debug_core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index c812857..5a3b04d 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)
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