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| author | Sebastian Reichel <sebastian.reichel@collabora.co.uk> | 2017-05-12 14:05:32 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2017-06-05 20:55:17 +0200 |
| commit | 2501b015313fe2fa40ed11fa4dd1748e09b7c773 (patch) | |
| tree | 4765eaf1722ba0445ed73ad0462752c260beb551 /drivers/watchdog/Kconfig | |
| parent | 166fbcf88fdafa02f784ec25ac64745c716b2de0 (diff) | |
| download | linux-2501b015313fe2fa40ed11fa4dd1748e09b7c773.tar.bz2 | |
watchdog: core: add option to avoid early handling of watchdog
On some systems its desirable to have watchdog reboot the system
when it does not come up fast enough. This adds a kernel parameter
to disable the auto-update of watchdog before userspace takes over
and a kernel option to set the default. The info messages were
added to shorten error searching on misconfigured systems.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/Kconfig')
| -rw-r--r-- | drivers/watchdog/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 2696493c808b..e9da19627914 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -46,6 +46,17 @@ config WATCHDOG_NOWAYOUT get killed. If you say Y here, the watchdog cannot be stopped once it has been started. +config WATCHDOG_HANDLE_BOOT_ENABLED + bool "Update boot-enabled watchdog until userspace takes over" + default y + help + The default watchdog behaviour (which you get if you say Y here) is + to ping watchdog devices that were enabled before the driver has + been loaded until control is taken over from userspace using the + /dev/watchdog file. If you say N here, the kernel will not update + the watchdog on its own. Thus if your userspace does not start fast + enough your device will reboot. + config WATCHDOG_SYSFS bool "Read different watchdog information through sysfs" help |