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Message-Id: <20231013115902.1059735-12-frederic@kernel.org>
Date: Fri, 13 Oct 2023 13:58:55 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
Boqun Feng <boqun.feng@...il.com>,
Joel Fernandes <joel@...lfernandes.org>,
Josh Triplett <josh@...htriplett.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Neeraj Upadhyay <neeraj.upadhyay@....com>,
"Paul E . McKenney" <paulmck@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Uladzislau Rezki <urezki@...il.com>, rcu <rcu@...r.kernel.org>,
Qiuxu Zhuo <qiuxu.zhuo@...el.com>
Subject: [PATCH 11/18] rcu: Use rcu_segcblist_segempty() instead of open coding it
This makes the code more readable.
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
Reviewed-by: Joel Fernandes (Google) <joel@...lfernandes.org>
Reviewed-by: Paul E. McKenney <paulmck@...nel.org>
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
kernel/rcu/rcu_segcblist.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/rcu/rcu_segcblist.c b/kernel/rcu/rcu_segcblist.c
index f71fac422c8f..1693ea22ef1b 100644
--- a/kernel/rcu/rcu_segcblist.c
+++ b/kernel/rcu/rcu_segcblist.c
@@ -368,7 +368,7 @@ bool rcu_segcblist_entrain(struct rcu_segcblist *rsclp,
smp_mb(); /* Ensure counts are updated before callback is entrained. */
rhp->next = NULL;
for (i = RCU_NEXT_TAIL; i > RCU_DONE_TAIL; i--)
- if (rsclp->tails[i] != rsclp->tails[i - 1])
+ if (!rcu_segcblist_segempty(rsclp, i))
break;
rcu_segcblist_inc_seglen(rsclp, i);
WRITE_ONCE(*rsclp->tails[i], rhp);
@@ -551,7 +551,7 @@ bool rcu_segcblist_accelerate(struct rcu_segcblist *rsclp, unsigned long seq)
* as their ->gp_seq[] grace-period completion sequence number.
*/
for (i = RCU_NEXT_READY_TAIL; i > RCU_DONE_TAIL; i--)
- if (rsclp->tails[i] != rsclp->tails[i - 1] &&
+ if (!rcu_segcblist_segempty(rsclp, i) &&
ULONG_CMP_LT(rsclp->gp_seq[i], seq))
break;
--
2.34.1
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