On Fri, May 20, 2016 at 04:47:43PM -0400, Waiman Long wrote: > >Similarly, and I know you hate it, but afaict, then semantically > >queued_spin_is_contended() ought to be: > > > >- return atomic_read(&lock->val) & ~_Q_LOCKED_MASK; > >+ return atomic_read(&lock->val); > >
> Looking for contended lock, you need to consider the lock waiters also. So > looking at the whole word is right. No, you _only_ need to look at the lock waiters.
