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| author | Damien Riegel <damien.riegel@savoirfairelinux.com> | 2015-11-16 12:27:59 -0500 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2015-12-13 15:27:10 +0100 |
| commit | 2165bf524da5f5e496d1cdb8c5afae1345ecce1e (patch) | |
| tree | 75a24ea774d08021e1c45e201ffc9f7a164ca661 /include/linux/watchdog.h | |
| parent | 1f32f83e5d81c1e99a1c16366e71d5867cd1e364 (diff) | |
| download | talos-op-linux-2165bf524da5f5e496d1cdb8c5afae1345ecce1e.tar.gz talos-op-linux-2165bf524da5f5e496d1cdb8c5afae1345ecce1e.zip | |
watchdog: core: add restart handler support
Many watchdog drivers implement the same code to register a restart
handler. This patch provides a generic way to set such a function.
The patch adds a new restart watchdog operation. If a restart priority
greater than 0 is needed, the driver can call
watchdog_set_restart_priority to set it.
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'include/linux/watchdog.h')
| -rw-r--r-- | include/linux/watchdog.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 027b1f43f12d..5b52c834f7aa 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -12,6 +12,7 @@ #include <linux/bitops.h> #include <linux/device.h> #include <linux/cdev.h> +#include <linux/notifier.h> #include <uapi/linux/watchdog.h> struct watchdog_ops; @@ -26,6 +27,7 @@ struct watchdog_device; * @status: The routine that shows the status of the watchdog device. * @set_timeout:The routine for setting the watchdog devices timeout value (in seconds). * @get_timeleft:The routine that gets the time left before a reset (in seconds). + * @restart: The routine for restarting the machine. * @ref: The ref operation for dyn. allocated watchdog_device structs * @unref: The unref operation for dyn. allocated watchdog_device structs * @ioctl: The routines that handles extra ioctl calls. @@ -45,6 +47,7 @@ struct watchdog_ops { unsigned int (*status)(struct watchdog_device *); int (*set_timeout)(struct watchdog_device *, unsigned int); unsigned int (*get_timeleft)(struct watchdog_device *); + int (*restart)(struct watchdog_device *); void (*ref)(struct watchdog_device *); void (*unref)(struct watchdog_device *); long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long); @@ -62,6 +65,7 @@ struct watchdog_ops { * @timeout: The watchdog devices timeout value (in seconds). * @min_timeout:The watchdog devices minimum timeout value (in seconds). * @max_timeout:The watchdog devices maximum timeout value (in seconds). + * @restart_nb: The notifier block to register a restart function. * @driver-data:Pointer to the drivers private data. * @lock: Lock for watchdog core internal use only. * @status: Field that contains the devices internal status bits. @@ -88,6 +92,7 @@ struct watchdog_device { unsigned int timeout; unsigned int min_timeout; unsigned int max_timeout; + struct notifier_block restart_nb; void *driver_data; struct mutex lock; unsigned long status; @@ -142,6 +147,7 @@ static inline void *watchdog_get_drvdata(struct watchdog_device *wdd) } /* drivers/watchdog/watchdog_core.c */ +void watchdog_set_restart_priority(struct watchdog_device *wdd, int priority); extern int watchdog_init_timeout(struct watchdog_device *wdd, unsigned int timeout_parm, struct device *dev); extern int watchdog_register_device(struct watchdog_device *); |
