Re: [PATCH 4/4] lockdep: Fix workqueue crossrelease annotation

From: Peter Zijlstra
Date: Thu Aug 31 2017 - 04:08:12 EST


On Wed, Aug 30, 2017 at 06:24:39PM +0900, Byungchul Park wrote:
> > And there obviously _should_ not be any dependencies between those. A
>
> 100% right. Since there obviously should not be any, it would be better
> to check them. So I've endlessly asked you 'do you have any reason removing
> the opportunity for that check?'. Overhead? Logical problem? Or want to
> believe workqueue setup code perfect forever? I mean, is it a problem if we
> check them?

Nothing is perfect. And cross-release less that others. Covering that
case for the first few works really isn't worth it.