Laurent Dufour d1bac78a8c powerpc/watchdog: introduce a NMI watchdog's factor
[ Upstream commit f5e74e836097d1004077390717d4bd95d4a2c27a ]

Introduce a factor which would apply to the NMI watchdog timeout.

This factor is a percentage added to the watchdog_tresh value. The value is
set under the watchdog_mutex protection and lockup_detector_reconfigure()
is called to recompute wd_panic_timeout_tb.

Once the factor is set, it remains until it is set back to 0, which means
no impact.

Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220713154729.80789-4-ldufour@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-25 11:45:51 +02:00
..
2022-08-17 15:16:09 +02:00