rcu: Make NOCB CPUs migrate CBs directly from outgoing CPU

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RCU's CPU-hotplug callback-migration code first moves the outgoing
CPU's callbacks to ->orphan_done and ->orphan_pend, and only then
moves them to the NOCB callback list.  This commit avoids the
extra step (and simplifies the code) by moving the callbacks directly
from the outgoing CPU's callback list to the NOCB callback list.

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

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This commit is contained in:

Paul E. McKenney 2017-06-26 12:23:46 -07:00

parent 95335c0355

commit b1a2d79fe7

3 changed files with 19 additions and 28 deletions

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14

kernel/rcu/tree.c

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2

kernel/rcu/tree.h

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31

kernel/rcu/tree_plugin.h

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