Re: [PATCH V2] kernel/watchdog: fix spurious hard lockups

From: Thomas Gleixner
Date: Fri Jun 23 2017 - 17:51:02 EST


On Fri, 23 Jun 2017, Don Zickus wrote:
> Hmm, all this work for a temp fix. Kan, how much longer until the real fix
> of having perf count the right cycles?

Quite a while. The approach is wilfully breaking the user space ABI, which
is not going to happen.

And there is a simpler solution as well, as I said here:

alpine.DEB.2.20.1706221730520.1885@nanos">http://lkml.kernel.org/r/alpine.DEB.2.20.1706221730520.1885@nanos

Thanks,

tglx