Re: [PATCH RFC tip/core/rcu 21/41] rcu: Inform RCU of irq_exit()activity

From: Paul E. McKenney
Date: Thu Feb 02 2012 - 12:34:26 EST

On Wed, Feb 01, 2012 at 06:30:33PM -0800, Josh Triplett wrote:
> On Wed, Feb 01, 2012 at 11:41:39AM -0800, Paul E. McKenney wrote:
> > [ Alternatively, delaying the ->rcu_read_lock_nesting decrement
> > until after the special handling would make the thing more robust
> > in the face of interrupts as well. And there is a separate patch
> > for that. ]
> Where does that separate patch live, and should it replace this one?

It is #18 in this series: "rcu: Protect __rcu_read_unlock() against
scheduler-using irq handlers". Both are needed. I will rework the
commit message appropriately.

Thanx, Paul

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