Re: [patch V2 22/29] lockup_detector: Make watchdog_nmi_reconfigure() two stage

On Tue, 3 Oct 2017, Thomas Gleixner wrote:

On Tue, 3 Oct 2017, Michael Ellerman wrote:

quoted

Hmm, I tried that patch, it makes the warning go away. But then I
triggered a deliberate hard lockup and got nothing.

Then I went back to the existing code (in linux-next), and I still get
no warning from a deliberate hard lockup.

So seems there may be some more gremlins. Will test more in the morning.

Hrm. That's weird. I'll have a look and send a proper patch series on top
of next.

The major difference is that the reworked code utilizes
watchdog_nmi_reconfigure() for both init and the sysctl updates, but I
can't for my life figure out why that doesn't work.

Thanks,

	tglx