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rcu: Remove old memory barriers from rcu_process_callbacks()

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Second step of partitioning of commit e59fb3120b.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2011-05-16 02:44:06 -07:00
parent 0bbcc529fc
commit 1135633bdd
1 changed files with 0 additions and 14 deletions
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14
kernel/rcutree.c
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@ -1460,25 +1460,11 @@ __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp)
*/ */
static void rcu_process_callbacks(void) static void rcu_process_callbacks(void)
{ {
/*
* Memory references from any prior RCU read-side critical sections
* executed by the interrupted code must be seen before any RCU
* grace-period manipulations below.
*/
smp_mb(); /* See above block comment. */
__rcu_process_callbacks(&rcu_sched_state, __rcu_process_callbacks(&rcu_sched_state,
&__get_cpu_var(rcu_sched_data)); &__get_cpu_var(rcu_sched_data));
__rcu_process_callbacks(&rcu_bh_state, &__get_cpu_var(rcu_bh_data)); __rcu_process_callbacks(&rcu_bh_state, &__get_cpu_var(rcu_bh_data));
rcu_preempt_process_callbacks(); rcu_preempt_process_callbacks();
/*
* Memory references from any later RCU read-side critical sections
* executed by the interrupted code must be seen after any RCU
* grace-period manipulations above.
*/
smp_mb(); /* See above block comment. */
/* If we are last CPU on way to dyntick-idle mode, accelerate it. */ /* If we are last CPU on way to dyntick-idle mode, accelerate it. */
rcu_needs_cpu_flush(); rcu_needs_cpu_flush();
} }