On Wed, Feb 08, 2017 at 02:46:48PM -0500, Waiman Long wrote: > The current spinlock lockup detection code can sometimes produce false > positives because of the unfairness of the locking algorithm itself.
Also, __delay(1) can be really terrible, which then causes the timeout to be highly variable and prone to triggering. > So the lockup detection code is now removed. Instead, we are relying > on the NMI watchdog to detect potential lockup. We won't have lockup > detection if the watchdog isn't running. > > The commented-out read-write lock lockup detection code are also > removed. Yes, this retains all the extra validation fields, which I've meanwhile heard are sometimes useful but does away with all the fragile bits. Thanks!
