Files
rockchip-kernel/kernel
Paul E. McKenney 39953dfd40 rcu: Avoid misordering in __call_rcu_nocb_enqueue()
The NOCB leader wakeup ordering depends on the store to the header
happening before the check for the leader already being awake.  However,
because atomic_long_add() does not return a value, it does not provide
ordering guarantees, the incorrect comment in wake_nocb_leader()
notwithstanding.  This commit therefore adds a smp_mb__after_atomic()
after the final atomic_long_add() to provide the needed ordering
guarantee.

Reported-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2014-09-16 10:08:03 -07:00
..
2014-06-12 16:18:45 +02:00
2014-08-08 15:57:18 -07:00
2014-07-05 11:17:45 +02:00
2014-08-08 15:57:32 -07:00
2014-08-08 15:57:24 -07:00
2014-07-17 22:07:37 +02:00
2014-08-08 15:57:22 -07:00
2014-08-08 15:57:24 -07:00