watchdog: core: make sure the watchdog_worker is not deferred
commit 4cd13c21 ("softirq: Let ksoftirqd do its job") has the effect of deferring timer handling in case of high CPU load, hence delaying the delayed work allthought the worker is running which high realtime priority. As hrtimers are not managed by softirqs, this patch replaces the delayed work by a plain work and uses an hrtimer to schedule that work. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> 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>
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