rcu/nocb: Reduce ->nocb_lock contention with separate ->nocb_gp_lock

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The sleep/wakeup of the no-CBs grace-period kthreads is synchronized
using the ->nocb_lock of the first CPU corresponding to that kthread.
This commit provides a separate ->nocb_gp_lock for this purpose, thus
reducing contention on ->nocb_lock.

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

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This commit is contained in:

Paul E. McKenney 2019-06-02 13:41:08 -07:00

parent 523bddd553

commit 4fd8c5f153

2 changed files with 7 additions and 5 deletions

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3

kernel/rcu/tree.h

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9

kernel/rcu/tree_plugin.h

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