Commit b15a2e7d authored by Paul E. McKenney's avatar Paul E. McKenney

rcu: Fix RCU's NMI documentation

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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
parent bdf2a436
...@@ -95,7 +95,7 @@ not to return until all ongoing NMI handlers exit. It is therefore safe ...@@ -95,7 +95,7 @@ not to return until all ongoing NMI handlers exit. It is therefore safe
to free up the handler's data as soon as synchronize_sched() returns. to free up the handler's data as soon as synchronize_sched() returns.
Important note: for this to work, the architecture in question must Important note: for this to work, the architecture in question must
invoke irq_enter() and irq_exit() on NMI entry and exit, respectively. invoke nmi_enter() and nmi_exit() on NMI entry and exit, respectively.
Answer to Quick Quiz Answer to Quick Quiz
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