powerpc/watchdog: provide more data in watchdog messages

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Provide timebase and timebase of last heartbeat in watchdog lockup
messages. Also provide a stack trace of when a CPU becomes un-stuck,
which can be useful -- it could be where irqs are re-enabled, so it
may be the end of the critical section which is responsible for the
latency which is useful information.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2018-05-05 17:26:00 +10:00 • committed by Michael Ellerman

parent 5a951c4e7e

commit 4e49226ea8

1 changed files with 25 additions and 3 deletions

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arch/powerpc/kernel/watchdog.c

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