rcu: Short-circuit synchronize_sched_expedited() if only one CPU

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If there is only one CPU, then invoking synchronize_sched_expedited()
is by definition a grace period.  This commit checks for this condition
and does a short-circuit return in that case.

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

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Paul E. McKenney 2015-09-29 08:15:52 -07:00

parent 6cf1008122

commit 06f60de19d

1 changed files with 4 additions and 0 deletions

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kernel/rcu/tree.c

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