OMAP: dmtimer: enable all timers to be wakeup events

[linux-2.6-omap-h63xx.git] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index a85678865c5eca291f4c9a06e1b5005e3c79c06b..f76db9dcaa05e592f3138f5389ae4c22827b58d9 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -60,6 +60,14 @@
 #include <linux/workqueue.h>
 #include <linux/cgroup.h>
 
+/*
+ * Workqueue for cpuset related tasks.
+ *
+ * Using kevent workqueue may cause deadlock when memory_migrate
+ * is set. So we create a separate workqueue thread for cpuset.
+ */
+static struct workqueue_struct *cpuset_wq;
+
 /*
  * Tracks how many cpusets are currently defined in system.
  * When there is only one cpuset (the root cpuset) we can
@@ -831,7 +839,7 @@ static DECLARE_WORK(rebuild_sched_domains_work, do_rebuild_sched_domains);
  */
 static void async_rebuild_sched_domains(void)
 {
-       schedule_work(&rebuild_sched_domains_work);
+       queue_work(cpuset_wq, &rebuild_sched_domains_work);
 }
 
 /*
@@ -2111,6 +2119,9 @@ void __init cpuset_init_smp(void)
 
        hotcpu_notifier(cpuset_track_online_cpus, 0);
        hotplug_memory_notifier(cpuset_track_online_nodes, 10);
+
+       cpuset_wq = create_singlethread_workqueue("cpuset");
+       BUG_ON(!cpuset_wq);
 }
 
 /**