rcu: Provide rcu_expedite_gp() and rcu_unexpedite_gp()

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Currently, expediting of normal synchronous grace-period primitives
(synchronize_rcu() and friends) is controlled by the rcu_expedited()
boot/sysfs parameter.  This works well, but does not handle nesting.
This commit therefore provides rcu_expedite_gp() to enable expediting
and rcu_unexpedite_gp() to cancel a prior rcu_expedite_gp(), both of
which support nesting.

Reported-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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This commit is contained in:

Paul E. McKenney 2015-02-18 12:24:30 -08:00

parent c517d838eb

commit 0d39482c3d

2 changed files with 68 additions and 0 deletions

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20

include/linux/rcupdate.h

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48

kernel/rcu/update.c

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