[patch 06/12] watchdog: Mark watchdog_hrtimer to expire in hard interrupt context

[Thomas Gleixner]

From: Sebastian Andrzej Siewior <bige...@linutronix.de>

The watchdog hrtimer must expire in hard interrupt context even on
PREEMPT_RT=y kernels as otherwise the hard/softlockup detection logic would
not work.

No functional change.

[ tglx: Split out from larger combo patch. Added changelog ]

Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
 kernel/watchdog.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -490,7 +490,7 @@ static void watchdog_enable(unsigned int
         * Start the timer first to prevent the NMI watchdog triggering
         * before the timer has a chance to fire.
         */
-       hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+       hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
        hrtimer->function = watchdog_timer_fn;
        hrtimer_start(hrtimer, ns_to_ktime(sample_period),
                      HRTIMER_MODE_REL_PINNED);