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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-05-10 17:12:17 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-05-11 16:10:47 -0700
commit72d5a9f7a9542f88397558c65bcfc3b115a65e34 (patch)
treee46d3ad1948de45b9641d1a8b88f88bfb3809007 /kernel/rcutiny.c
parent4376030a54860dedab9d848dfa7cc700a6025c0b (diff)
downloadlinux-2.6.34-ux500-72d5a9f7a9542f88397558c65bcfc3b115a65e34.tar.gz
rcu: remove all rcu head initializations, except on_stack initializations
Remove all rcu head inits. We don't care about the RCU head state before passing it to call_rcu() anyway. Only leave the "on_stack" variants so debugobjects can keep track of objects on stack. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutiny.c')
-rw-r--r--kernel/rcutiny.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index b1804ff83d5..38729d3cd23 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -245,11 +245,13 @@ void rcu_barrier(void)
{
struct rcu_synchronize rcu;
+ init_rcu_head_on_stack(&rcu.head);
init_completion(&rcu.completion);
/* Will wake me after RCU finished. */
call_rcu(&rcu.head, wakeme_after_rcu);
/* Wait for it. */
wait_for_completion(&rcu.completion);
+ destroy_rcu_head_on_stack(&rcu.head);
}
EXPORT_SYMBOL_GPL(rcu_barrier);
@@ -257,11 +259,13 @@ void rcu_barrier_bh(void)
{
struct rcu_synchronize rcu;
+ init_rcu_head_on_stack(&rcu.head);
init_completion(&rcu.completion);
/* Will wake me after RCU finished. */
call_rcu_bh(&rcu.head, wakeme_after_rcu);
/* Wait for it. */
wait_for_completion(&rcu.completion);
+ destroy_rcu_head_on_stack(&rcu.head);
}
EXPORT_SYMBOL_GPL(rcu_barrier_bh);
@@ -269,11 +273,13 @@ void rcu_barrier_sched(void)
{
struct rcu_synchronize rcu;
+ init_rcu_head_on_stack(&rcu.head);
init_completion(&rcu.completion);
/* Will wake me after RCU finished. */
call_rcu_sched(&rcu.head, wakeme_after_rcu);
/* Wait for it. */
wait_for_completion(&rcu.completion);
+ destroy_rcu_head_on_stack(&rcu.head);
}
EXPORT_SYMBOL_GPL(rcu_barrier_sched);