* Andrey Ryabinin <aryabi...@virtuozzo.com> 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.
> Sometimes this doesn't work since watchdog might trigger on the other
> CPU which is waiting for an IPI to proceed.
>
> Reset watchdog on all CPUs to prevent spurious softlockup messages.
>
> Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
> ---
> kernel/sched/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 7f2cae4..c135eee 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -5134,7 +5134,7 @@ void show_state_filter(unsigned long state_filter)
> * reset the NMI-timeout, listing all files on a slow
> * console might take a lot of time:
> */
> - touch_nmi_watchdog();
> + touch_all_softlockup_watchdogs();
So don't we want both?
Thanks,
Ingo
