Messages in this thread | | | Subject | Re: [PATCH] debug work struct cancel deadlocks with lockdep | From | Johannes Berg <> | Date | Thu, 05 Jul 2007 10:50:48 +0200 |
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On Thu, 2007-07-05 at 10:45 +0200, Ingo Molnar wrote:
> > +#ifdef CONFIG_LOCKDEP > > + /* > > + * It is permissible to free the struct work_struct > > + * from inside the function that is called from it, > > + * this we need to take into account for lockdep too. > > + * To avoid bogus "held lock freed" warnings as well > > + * as problems when looking into work->lockdep_map, > > + * make a copy and use that here. > > + */ > > + struct lockdep_map lockdep_map = work->lockdep_map; > > +#endif > > > + lock_acquire(&lockdep_map, 0, 0, 0, 2, _THIS_IP_); > > f(work); > > + lock_release(&lockdep_map, 1, _THIS_IP_); > > neat trick :)
Not like I had a choice ;) But since I assign .key it still works :)
Btw, do you have a tree you'll submit this through, or Oleg, or should I send it to akpm after we sort out any further issues?
johannes [unhandled content-type:application/pgp-signature] | |