Re: Memory barrier needed with wake_up_process()?

[Peter Zijlstra]

On Sat, Sep 03, 2016 at 04:51:07PM +0300, Felipe Balbi wrote:
> > That said, I cannot spot an obvious fail,
> 
> okay, but a fail does exist. Any hints on what extra information I could
> capture to help figuring this one out?

More information on which sleep is not waking woudl help I suppose. That
greatly limits the amount of code one has to stare at.

Also, a better picture of all threads involved in the wakeup. Alan seems
to suggest there's multiple CPUs involved in the wakeup.