Re: Memory barrier needed with wake_up_process()?

[Peter Zijlstra]

On Fri, Sep 02, 2016 at 04:16:54PM -0400, Alan Stern wrote:
> Felipe, your tests will show whether my guess was totally off-base.  
> For the new people, Felipe is tracking down a problem that involves
> exactly the code sequence listed at the top of the email, where we know
> that the wakeup routine runs but nevertheless the task sleeps.  At
> least, that's what it looks like at the moment.

What arch are you seeing this on?