rcu/nocb: Allow lockless use of rcu_segcblist_restempty()

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Currently, rcu_segcblist_restempty() assumes that the callback list
is not being changed by other CPUs, but upcoming changes will require
it to operate locklessly.  This commit therefore adds the needed
READ_ONCE() calls, along with the WRITE_ONCE() calls when updating
the callback list.

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

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This commit is contained in:

Paul E. McKenney 2019-05-13 14:36:11 -07:00

parent ca5c825808

commit 76c6927c3e

2 changed files with 16 additions and 16 deletions

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30

kernel/rcu/rcu_segcblist.c

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2

kernel/rcu/rcu_segcblist.h

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