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rcu: Fix RCU's NMI documentation
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Wed, 8 Jun 2011 00:05:34 +0000 (17:05 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 29 Sep 2011 04:36:44 +0000 (21:36 -0700)
It has long been the case that the architecture must call nmi_enter()
and nmi_exit() rather than irq_enter() and irq_exit() in order to
permit RCU read-side critical sections in NMIs.  Catch the documentation
up with reality.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

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