diff --git a/Documentation/IPMI.txt b/Documentation/IPMI.txt index 31d1d658827f082f66c88c3147e99be3321635cf..c0d8788e75d3f1f2a335a27a883f161ad51128ac 100644 --- a/Documentation/IPMI.txt +++ b/Documentation/IPMI.txt @@ -587,7 +587,7 @@ used to control it: modprobe ipmi_watchdog timeout= pretimeout= action= preaction= preop= start_now=x - nowayout=x ifnum_to_use=n + nowayout=x ifnum_to_use=n panic_wdt_timeout= ifnum_to_use specifies which interface the watchdog timer should use. The default is -1, which means to pick the first one registered. @@ -597,7 +597,9 @@ is the amount of seconds before the reset that the pre-timeout panic will occur (if pretimeout is zero, then pretimeout will not be enabled). Note that the pretimeout is the time before the final timeout. So if the timeout is 50 seconds and the pretimeout is 10 seconds, then the pretimeout -will occur in 40 second (10 seconds before the timeout). +will occur in 40 second (10 seconds before the timeout). The panic_wdt_timeout +is the value of timeout which is set on kernel panic, in order to let actions +such as kdump to occur during panic. The action may be "reset", "power_cycle", or "power_off", and specifies what to do when the timer times out, and defaults to @@ -634,6 +636,7 @@ for configuring the watchdog: ipmi_watchdog.preop= ipmi_watchdog.start_now=x ipmi_watchdog.nowayout=x + ipmi_watchdog.panic_wdt_timeout= The options are the same as the module parameter options. diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c index 0ac3bd1a5497c5bae41f1cc51ac8cdf667ed73b4..096f0cef4da14152653ea61daa010b367174759d 100644 --- a/drivers/char/ipmi/ipmi_watchdog.c +++ b/drivers/char/ipmi/ipmi_watchdog.c @@ -153,6 +153,9 @@ static int timeout = 10; /* The pre-timeout is disabled by default. */ static int pretimeout; +/* Default timeout to set on panic */ +static int panic_wdt_timeout = 255; + /* Default action is to reset the board on a timeout. */ static unsigned char action_val = WDOG_TIMEOUT_RESET; @@ -293,6 +296,9 @@ MODULE_PARM_DESC(timeout, "Timeout value in seconds."); module_param(pretimeout, timeout, 0644); MODULE_PARM_DESC(pretimeout, "Pretimeout value in seconds."); +module_param(panic_wdt_timeout, timeout, 0644); +MODULE_PARM_DESC(timeout, "Timeout value on kernel panic in seconds."); + module_param_cb(action, ¶m_ops_str, action_op, 0644); MODULE_PARM_DESC(action, "Timeout action. One of: " "reset, none, power_cycle, power_off."); @@ -1189,7 +1195,7 @@ static int wdog_panic_handler(struct notifier_block *this, /* Make sure we do this only once. */ panic_event_handled = 1; - timeout = 255; + timeout = panic_wdt_timeout; pretimeout = 0; panic_halt_ipmi_set_timeout(); }