rcu: Avoid ->dynticks_nesting store tearing

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Although ->dynticks_nesting is updated only by process level, it is
accessed from hardirq to check for interrupt-from-idle quiescent states.
Store tearing is thus possible, so this commit applies WRITE_ONCE()
to ->dynticks_nesting stores.

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

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Paul E. McKenney 2017-10-05 15:03:10 -07:00

parent 914955e18c

commit 2342172fd6

1 changed files with 3 additions and 3 deletions

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6

kernel/rcu/tree.c

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