From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
"Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 2/4] rcu-tasks: Convert rcu_tasks_wait_gp() for-loop to while-loop
Date: Thu, 5 Nov 2020 15:39:31 -0800 [thread overview]
Message-ID: <20201105233933.20748-2-paulmck@kernel.org> (raw)
In-Reply-To: <20201105233900.GA20676@paulmck-ThinkPad-P72>
From: "Paul E. McKenney" <paulmck@kernel.org>
The infinite for-loop in rcu_tasks_wait_gp() has its only exit at the
top of the loop, so this commit does the straightforward conversion to
a while-loop, thus saving a few lines.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/tasks.h | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index d5d9f2d..a93271f 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -338,14 +338,11 @@ static void rcu_tasks_wait_gp(struct rcu_tasks *rtp)
if (fract > HZ)
fract = HZ;
- for (;;) {
+ while (!list_empty(&holdouts)) {
bool firstreport;
bool needreport;
int rtst;
- if (list_empty(&holdouts))
- break;
-
/* Slowly back off waiting for holdouts */
set_tasks_gp_state(rtp, RTGS_WAIT_SCAN_HOLDOUTS);
schedule_timeout_idle(HZ/fract);
--
2.9.5
next prev parent reply other threads:[~2020-11-05 23:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 23:39 [PATCH tip/core/rcu 0/4] RCU-tasks updates for v5.11 Paul E. McKenney
2020-11-05 23:39 ` [PATCH tip/core/rcu 1/4] rcutorture: Make preemptible TRACE02 enable lockdep paulmck
2020-11-05 23:39 ` paulmck [this message]
2020-11-05 23:39 ` [PATCH tip/core/rcu 3/4] rcutorture: Make grace-period kthread report match RCU flavor being tested paulmck
2020-12-15 8:40 ` Geert Uytterhoeven
2020-12-15 18:24 ` Paul E. McKenney
2020-12-16 9:31 ` Geert Uytterhoeven
2020-12-16 16:48 ` Paul E. McKenney
2020-12-27 16:49 ` Paul E. McKenney
2020-11-05 23:39 ` [PATCH tip/core/rcu 4/4] rcu-tasks: Make the units of ->init_fract be jiffies paulmck
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