rcu: add tracing for RCU's kthread run states.

[pandora-kernel.git] / kernel / rcutree_plugin.h

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 07d3464..22a6a46 100644 (file)
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -1198,11 +1198,13 @@ static int rcu_boost_kthread(void *arg)
        int more2boost;
 
        for (;;) {
+               rnp->boost_kthread_status = RCU_KTHREAD_WAITING;
                wait_event_interruptible(rnp->boost_wq, rnp->boost_tasks ||
                                                        rnp->exp_tasks ||
                                                        kthread_should_stop());
                if (kthread_should_stop())
                        break;
+               rnp->boost_kthread_status = RCU_KTHREAD_RUNNING;
                more2boost = rcu_boost(rnp);
                if (more2boost)
                        spincnt++;
@@ -1213,6 +1215,7 @@ static int rcu_boost_kthread(void *arg)
                        spincnt = 0;
                }
        }
+       rnp->boost_kthread_status = RCU_KTHREAD_STOPPED;
        return 0;
 }