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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-03-29 17:48:28 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-05-05 23:16:56 -0700 |
| commit | d71df90eadfc35aa549ff9a850842673febca71f (patch) | |
| tree | dd275a3f4848784bc6625574341c11befc1b3823 /kernel/rcutree_plugin.h | |
| parent | 0ac3d136b2e3cdf1161178223bc5da14a06241d0 (diff) | |
| download | linux-d71df90eadfc35aa549ff9a850842673febca71f.tar.bz2 | |
rcu: add tracing for RCU's kthread run states.
Add tracing to help debugging situations when RCU's kthreads are not
running but are supposed to be.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree_plugin.h')
| -rw-r--r-- | kernel/rcutree_plugin.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index 07d346445d12..22a6a46de7c6 100644 --- 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; } |