rcu/nocb: Avoid synchronous wakeup in __call_rcu_nocb_wake()

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When callbacks are in full flow, the common case is waiting for a
grace period, and this grace period will normally take a few jiffies to
complete.  It therefore isn't all that helpful for __call_rcu_nocb_wake()
to do a synchronous wakeup in this case.  This commit therefore turns this
into a timer-based deferred wakeup of the no-CBs grace-period kthread.

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

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Paul E. McKenney 2019-07-09 06:54:42 -07:00

parent f7a81b12d6

commit 273f034065

1 changed files with 5 additions and 14 deletions

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kernel/rcu/tree_plugin.h

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