Re: [tip: timers/core] hrtimer: Annotate lockless access to timer->state

[Thomas Gleixner]

On Wed, 6 Nov 2019, Eric Dumazet wrote:
> > -static inline int hrtimer_is_queued(struct hrtimer *timer)
> > +static inline bool hrtimer_is_queued(struct hrtimer *timer)
> >  {
> > -       return timer->state & HRTIMER_STATE_ENQUEUED;
> > +       /* The READ_ONCE pairs with the update functions of timer->state */
> > +       return !!READ_ONCE(timer->state) & HRTIMER_STATE_ENQUEUED;
> 
> You probably meant :
> 
> return !!(READ_ONCE(timer->state) & HRTIMER_STATE_ENQUEUED);
> 
> Sorry for not spotting this earlier.

Yes, I'm a moron....