On Fri, Sep 28, 2007 at 07:05:14PM -0400, Steven Rostedt wrote: > > > -- > 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. Yep! I do need to fix the comment. > > > + * 2. Outermost rcu_read_unlock() for blocked RCU read-side critical section. > > > + * > > > > Event #3. is missing? > > I guess Paul needs to answer that one ;-) An older version had three, the new one has two, and I forgot to s/three/two/. Thanx, Paul - 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
