On Tue, Oct 31, 2017 at 10:32:00PM +0100, Thomas Gleixner wrote: > That means we can have the following situation: > > lock(watchdog_mutex); > lockup_detector_reconfigure(); > cpus_read_lock(); > stop(); > park() > update(); > start(); > unpark() > cpus_read_unlock(); thread runs() > cleanup(); > unlock(watchdog_mutex); >
Isn't there also a where hardlockup_detector_perf_init() creates an event to 'probe' stuff, and then hardlockup_detector_perf_enable() _again_ creates the event?
