diff options
Diffstat (limited to 'drivers/watchdog/softdog.c')
| -rw-r--r-- | drivers/watchdog/softdog.c | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/drivers/watchdog/softdog.c b/drivers/watchdog/softdog.c index 7983029852ab..060740625485 100644 --- a/drivers/watchdog/softdog.c +++ b/drivers/watchdog/softdog.c @@ -21,13 +21,12 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/hrtimer.h> #include <linux/init.h> -#include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/reboot.h> -#include <linux/timer.h> #include <linux/types.h> #include <linux/watchdog.h> @@ -54,7 +53,10 @@ module_param(soft_panic, int, 0); MODULE_PARM_DESC(soft_panic, "Softdog action, set to 1 to panic, 0 to reboot (default=0)"); -static void softdog_fire(unsigned long data) +static struct hrtimer softdog_ticktock; +static struct hrtimer softdog_preticktock; + +static enum hrtimer_restart softdog_fire(struct hrtimer *timer) { module_put(THIS_MODULE); if (soft_noboot) { @@ -67,32 +69,33 @@ static void softdog_fire(unsigned long data) emergency_restart(); pr_crit("Reboot didn't ?????\n"); } -} -static struct timer_list softdog_ticktock = - TIMER_INITIALIZER(softdog_fire, 0, 0); + return HRTIMER_NORESTART; +} static struct watchdog_device softdog_dev; -static void softdog_pretimeout(unsigned long data) +static enum hrtimer_restart softdog_pretimeout(struct hrtimer *timer) { watchdog_notify_pretimeout(&softdog_dev); -} -static struct timer_list softdog_preticktock = - TIMER_INITIALIZER(softdog_pretimeout, 0, 0); + return HRTIMER_NORESTART; +} static int softdog_ping(struct watchdog_device *w) { - if (!mod_timer(&softdog_ticktock, jiffies + (w->timeout * HZ))) + if (!hrtimer_active(&softdog_ticktock)) __module_get(THIS_MODULE); + hrtimer_start(&softdog_ticktock, ktime_set(w->timeout, 0), + HRTIMER_MODE_REL); if (IS_ENABLED(CONFIG_SOFT_WATCHDOG_PRETIMEOUT)) { if (w->pretimeout) - mod_timer(&softdog_preticktock, jiffies + - (w->timeout - w->pretimeout) * HZ); + hrtimer_start(&softdog_preticktock, + ktime_set(w->timeout - w->pretimeout, 0), + HRTIMER_MODE_REL); else - del_timer(&softdog_preticktock); + hrtimer_cancel(&softdog_preticktock); } return 0; @@ -100,11 +103,11 @@ static int softdog_ping(struct watchdog_device *w) static int softdog_stop(struct watchdog_device *w) { - if (del_timer(&softdog_ticktock)) + if (hrtimer_cancel(&softdog_ticktock)) module_put(THIS_MODULE); if (IS_ENABLED(CONFIG_SOFT_WATCHDOG_PRETIMEOUT)) - del_timer(&softdog_preticktock); + hrtimer_cancel(&softdog_preticktock); return 0; } @@ -136,8 +139,15 @@ static int __init softdog_init(void) watchdog_set_nowayout(&softdog_dev, nowayout); watchdog_stop_on_reboot(&softdog_dev); - if (IS_ENABLED(CONFIG_SOFT_WATCHDOG_PRETIMEOUT)) + hrtimer_init(&softdog_ticktock, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + softdog_ticktock.function = softdog_fire; + + if (IS_ENABLED(CONFIG_SOFT_WATCHDOG_PRETIMEOUT)) { softdog_info.options |= WDIOF_PRETIMEOUT; + hrtimer_init(&softdog_preticktock, CLOCK_MONOTONIC, + HRTIMER_MODE_REL); + softdog_preticktock.function = softdog_pretimeout; + } ret = watchdog_register_device(&softdog_dev); if (ret) |