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Subject[PATCH] rcu: Fix incorrect trace string in rcu_boost_kthread()
Date
Currently, the trace string information before and after rcu_wait()
and schedule_timeout_idle() are reversed, this commit therefore
switches these strings in order to correctly trace.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
---
kernel/rcu/tree_plugin.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 7b0fe741a088..7b622b5196a8 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1114,10 +1114,10 @@ static int rcu_boost_kthread(void *arg)
trace_rcu_utilization(TPS("Start boost kthread@init"));
for (;;) {
WRITE_ONCE(rnp->boost_kthread_status, RCU_KTHREAD_WAITING);
- trace_rcu_utilization(TPS("End boost kthread@rcu_wait"));
+ trace_rcu_utilization(TPS("Start boost kthread@rcu_wait"));
rcu_wait(READ_ONCE(rnp->boost_tasks) ||
READ_ONCE(rnp->exp_tasks));
- trace_rcu_utilization(TPS("Start boost kthread@rcu_wait"));
+ trace_rcu_utilization(TPS("End boost kthread@rcu_wait"));
WRITE_ONCE(rnp->boost_kthread_status, RCU_KTHREAD_RUNNING);
more2boost = rcu_boost(rnp);
if (more2boost)
@@ -1126,9 +1126,9 @@ static int rcu_boost_kthread(void *arg)
spincnt = 0;
if (spincnt > 10) {
WRITE_ONCE(rnp->boost_kthread_status, RCU_KTHREAD_YIELDING);
- trace_rcu_utilization(TPS("End boost kthread@rcu_yield"));
- schedule_timeout_idle(2);
trace_rcu_utilization(TPS("Start boost kthread@rcu_yield"));
+ schedule_timeout_idle(2);
+ trace_rcu_utilization(TPS("End boost kthread@rcu_yield"));
spincnt = 0;
}
}
--
2.25.1
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