[Devel] [PATCH rh7] kernel/sysrq: reset watchdog on all cpus while during sysrq-w

[Andrey Ryabinin]

On 05/25/2016 04:31 PM, Andrey Ryabinin wrote:
> Lengthy output of sysrq-w may take a lot of time on slow serial console.
> Currently we reset NMI-watchdog on the current cpu to avoid softlockup,
> however this doesn't work since watchdog might be triggered on the other
> cpu which is waits for proceeding an IPI.
> 
> Reset watchdog on all cpus to prevent spurious softlockup messages.
> 
> https://jira.sw.ru/browse/PSBM-47486
> 
> Signed-off-by: Andrey Ryabinin <aryabinin at virtuozzo.com>


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