On Tue, Mar 17, 2015 at 09:18:07AM +0100, Peter Zijlstra wrote:
> On Mon, Mar 16, 2015 at 11:37:45AM -0700, Paul E. McKenney wrote:
> > From: "Paul E. McKenney" <[email protected]>
> >
> > RCU ignores offlined CPUs, so they cannot safely run RCU read-side code.
> > (They -can- use SRCU, but not RCU.) This means that any use of RCU
> > during or after the call to arch_cpu_idle_dead(). Unfortunately,
> > commit 2ed53c0d6cc99 added a complete() call, which will contain RCU
> > read-side critical sections if there is a task waiting to be awakened.
>
> Got a little more detail there?
Quite possibly. But exactly what sort of detail are you looking for?
Thanx, Paul
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