Author: Dmitry Guryanov
Email: dgurya...@parallels.com
Subject: watchdog: write log message when timer elapses
Date: Fri, 15 Feb 2013 18:00:41 +0400
* [fence-watchdog] a message is printed if the node is fenced
by watchdog (PSBM-18312)
It's not possible to identify reason of reboot, so let's
write the log message.
https://jira.sw.ru/browse/PSBM-18312
changes in v2:
use bust_spinlocks, so that printk will never hang
Signed-off-by: Dmitry Guryanov <dgurya...@parallels.com>
Signed-off-by: Pavel Tikhomirov <ptikhomi...@virtuozzo.com>
---
kernel/fence-watchdog.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/kernel/fence-watchdog.c b/kernel/fence-watchdog.c
index ca07da5..7938fcb 100644
--- a/kernel/fence-watchdog.c
+++ b/kernel/fence-watchdog.c
@@ -37,6 +37,11 @@ void fence_wdog_do_fence(void)
{
char *killer = NULL;
+ bust_spinlocks(1);
+ printk(KERN_EMERG"fence-watchdog: %s\n",
+ action_names[fence_wdog_action]);
+ bust_spinlocks(0);
+
switch (fence_wdog_action) {
case FENCE_WDOG_CRASH:
panic_on_oops = 1;
@@ -52,7 +57,6 @@ void fence_wdog_do_fence(void)
lockdep_off();
local_irq_enable();
sysdev_shutdown();
- printk(KERN_EMERG "System halted.\n");
kmsg_dump(KMSG_DUMP_HALT);
machine_halt();
break;
--
1.9.3
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