[PATCH] drm/syncobj: make lockdep complain on WAIT_FOR_SUBMIT v3

[Peter Zijlstra]

On Tue, Jan 19, 2021 at 02:05:09PM +0100, Daniel Vetter wrote:

> > diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
> > index b9e9adec73e8..6eb117c0d0f3 100644
> > --- a/include/linux/lockdep.h
> > +++ b/include/linux/lockdep.h
> > @@ -310,6 +310,10 @@ extern void lock_unpin_lock(struct lockdep_map *lock, struct pin_cookie);
> >                 WARN_ON_ONCE(debug_locks && !lockdep_is_held(l));       \
> >         } while (0)
> >
> > +#define lockdep_assert_none_held_once()        do {                            \
> > +               WARN_ON_ONCE(debug_locks && current->lockdep_depth);    \
> > +       } while (0)
> > +
> >  #define lockdep_recursing(tsk) ((tsk)->lockdep_recursion)
> >
> >  #define lockdep_pin_lock(l)    lock_pin_lock(&(l)->dep_map)
> > @@ -387,6 +391,7 @@ extern int lockdep_is_held(const void *);
> >  #define lockdep_assert_held_write(l)   do { (void)(l); } while (0)
> >  #define lockdep_assert_held_read(l)            do { (void)(l); } while (0)
> >  #define lockdep_assert_held_once(l)            do { (void)(l); } while (0)
> > +#define lockdep_assert_none_held_once()        do { } while (0)
> >
> >  #define lockdep_recursing(tsk)                 (0)
> 
> ofc needs ack from Peter, but drm parts look all good to me.

Acked-by: Peter Zijlstra (Intel) <peterz at infradead.org>