rcu: Make synchronize_rcu_expedited() use sequence-counter scheme

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Although synchronize_rcu_expedited() uses a sequence-counter scheme, it
is based on a single increment per grace period, which means that tasks
piggybacking off of concurrent grace periods may be forced to wait longer
than necessary.  This commit therefore applies the new sequence-count
functions developed for synchronize_sched_expedited() to speed things
up a bit and to consolidate the sequence-counter implementation.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul E. McKenney 2015-06-25 15:52:50 -07:00

parent 28f00767e3

commit 543c6158f6

1 changed files with 6 additions and 10 deletions

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kernel/rcu/tree_plugin.h

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