rcu: Add ACCESS_ONCE() to ->n_force_qs_lh accesses

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The ->n_force_qs_lh field is accessed without the benefit of any
synchronization, so this commit adds the needed ACCESS_ONCE() wrappers.
Yes, increments to ->n_force_qs_lh can be lost, but contention should
be low and the field is strictly statistical in nature, so this is not
a problem.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

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This commit is contained in:

Paul E. McKenney 2013-12-03 09:24:02 -08:00

parent 6d0abeca32

commit 3660c2813f

2 changed files with 3 additions and 3 deletions

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4

kernel/rcu/tree.c

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2

kernel/rcu/tree_trace.c

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