Linus, please pull the latest scheduler fixes git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git
Two more rcupreempt updates (that i forgot about for the previous pull
request - they hid in the middle of the queue). Thanks,
Ingo
------------------>
Paul E. McKenney (2):
rcupreempt: fix hibernate/resume in presence of PREEMPT_RCU and hotplug
rcupreempt: remove never-migrates assumption from rcu_process_callbacks()
kernel/rcupreempt.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/kernel/rcupreempt.c b/kernel/rcupreempt.c
index c7c5209..e951701 100644
--- a/kernel/rcupreempt.c
+++ b/kernel/rcupreempt.c
@@ -918,8 +918,9 @@ void rcu_offline_cpu(int cpu)
* fix.
*/
+ local_irq_save(flags);
rdp = RCU_DATA_ME();
- spin_lock_irqsave(&rdp->lock, flags);
+ spin_lock(&rdp->lock);
*rdp->nexttail = list;
if (list)
rdp->nexttail = tail;
@@ -951,9 +952,11 @@ static void rcu_process_callbacks(struct softirq_action *unused)
{
unsigned long flags;
struct rcu_head *next, *list;
- struct rcu_data *rdp = RCU_DATA_ME();
+ struct rcu_data *rdp;
- spin_lock_irqsave(&rdp->lock, flags);
+ local_irq_save(flags);
+ rdp = RCU_DATA_ME();
+ spin_lock(&rdp->lock);
list = rdp->donelist;
if (list == NULL) {
spin_unlock_irqrestore(&rdp->lock, flags);
--
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