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SubjectRe: [PATCH] NMI request/release
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On Tue, 2002-10-22 at 14:08, Corey Minyard wrote:

> In 2.5.44, stock from kernel.org, rcu_process_callbacks() calls
> local_irq_disable(). Is that just preemption disabling, now?

No, but rcu_process_callbacks() is for the copy update part.

Look at rcu_read_lock() and rcu_read_unlock()... those are the read
paths.

Of course, I can be very wrong about some of this, RCU grosses^Wconfuses
me. But the read paths do just seem to call rcu_read_lock/unlock which
just do a preempt_disable/enable. Otherwise the read path is entirely
transparent.

Robert Love

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