-- On Fri, 28 Sep 2007, Gautham R Shenoy wrote: > > > > +#ifdef CONFIG_PREEMPT_RCU_BOOST > > +/* > > + * Task state with respect to being RCU-boosted. This state is changed > > + * by the task itself in response to the following three events: > ^^^ > > + * 1. Preemption (or block on lock) while in RCU read-side critical section. > > I am wondering, can a task block on a lock while in RCU read-side > critical section? I think this may be specific to the -rt patch. In the -rt patch, spin_locks turn into mutexes, and therefor can block a read-side critical section. > > + * 2. Outermost rcu_read_unlock() for blocked RCU read-side critical section. > > + * > > Event #3. is missing? I guess Paul needs to answer that one ;-) -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
