From: Lai Jiangshan <laijs@linux.alibaba.com>
To: linux-kernel@vger.kernel.org
Cc: Lai Jiangshan <laijs@linux.alibaba.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Joel Fernandes <joel@joelfernandes.org>,
rcu@vger.kernel.org
Subject: [PATCH 3/7] rcu: trace_rcu_utilization() paired
Date: Tue, 15 Oct 2019 10:28:45 +0000 [thread overview]
Message-ID: <20191015102850.2079-1-laijs@linux.alibaba.com> (raw)
The notations include "Start" and "End", it is better
when there are paired.
Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
---
kernel/rcu/tree.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index c351fc280945..7830d5a06e69 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2484,8 +2484,8 @@ static void rcu_cpu_kthread(unsigned int cpu)
char work, *workp = this_cpu_ptr(&rcu_data.rcu_cpu_has_work);
int spincnt;
+ trace_rcu_utilization(TPS("Start CPU kthread@rcu_run"));
for (spincnt = 0; spincnt < 10; spincnt++) {
- trace_rcu_utilization(TPS("Start CPU kthread@rcu_run"));
local_bh_disable();
*statusp = RCU_KTHREAD_RUNNING;
local_irq_disable();
@@ -2501,6 +2501,7 @@ static void rcu_cpu_kthread(unsigned int cpu)
return;
}
}
+ trace_rcu_utilization(TPS("End CPU kthread@rcu_run"));
*statusp = RCU_KTHREAD_YIELDING;
trace_rcu_utilization(TPS("Start CPU kthread@rcu_yield"));
schedule_timeout_interruptible(2);
--
2.20.1
next reply other threads:[~2019-10-15 10:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-15 10:28 Lai Jiangshan [this message]
2019-10-15 10:28 ` [PATCH 4/7] rcu: remove the declaration of call_rcu() in tree.h Lai Jiangshan
2019-10-16 3:47 ` Paul E. McKenney
2019-10-15 10:28 ` [PATCH 5/7] rcu: move gp_state_names[] and gp_state_getname() to tree_stall.h Lai Jiangshan
2019-10-15 10:28 ` [PATCH 6/7] rcu: rename some CONFIG_PREEMPTION to CONFIG_PREEMPT_RCU Lai Jiangshan
2019-10-16 3:54 ` Paul E. McKenney
2019-10-16 15:26 ` Lai Jiangshan
2019-10-17 3:00 ` Paul E. McKenney
2019-10-15 10:28 ` [PATCH 7/7] rcu: splite tasks_rcu to tasks.c Lai Jiangshan
2019-10-16 3:40 ` [PATCH 3/7] rcu: trace_rcu_utilization() paired Paul E. McKenney
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