usb: renesas_usbhs: modify data transfer interrupt

[pandora-kernel.git] / kernel / sched_rt.c

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 64b2a37..88725c9 100644 (file)
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1263,6 +1263,7 @@ static int find_lowest_rq(struct task_struct *task)
        if (!cpumask_test_cpu(this_cpu, lowest_mask))
                this_cpu = -1; /* Skip this_cpu opt if not among lowest */
 
+       rcu_read_lock();
        for_each_domain(cpu, sd) {
                if (sd->flags & SD_WAKE_AFFINE) {
                        int best_cpu;
@@ -1272,15 +1273,20 @@ static int find_lowest_rq(struct task_struct *task)
                         * remote processor.
                         */
                        if (this_cpu != -1 &&
-                           cpumask_test_cpu(this_cpu, sched_domain_span(sd)))
+                           cpumask_test_cpu(this_cpu, sched_domain_span(sd))) {
+                               rcu_read_unlock();
                                return this_cpu;
+                       }
 
                        best_cpu = cpumask_first_and(lowest_mask,
                                                     sched_domain_span(sd));
-                       if (best_cpu < nr_cpu_ids)
+                       if (best_cpu < nr_cpu_ids) {
+                               rcu_read_unlock();
                                return best_cpu;
+                       }
                }
        }
+       rcu_read_unlock();
 
        /*
         * And finally, if there were no matches within the domains