linux-kernel - [tip: core/rcu] rcu: Convert rcu_nohz_full_cpu() ULONG_CMP_LT() to time

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Date:   Mon, 11 May 2020 20:59:40 -0000
From:   "tip-bot2 for Paul E. McKenney" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Paul E. McKenney" <paulmck@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: core/rcu] rcu: Convert rcu_nohz_full_cpu() ULONG_CMP_LT() to
 time_before()

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     e2f3ccfa62001994ed3e81c309face75aaa8d372
Gitweb:        https://git.kernel.org/tip/e2f3ccfa62001994ed3e81c309face75aaa8d372
Author:        Paul E. McKenney <paulmck@...nel.org>
AuthorDate:    Fri, 10 Apr 2020 17:05:22 -07:00
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Mon, 27 Apr 2020 11:01:17 -07:00

rcu: Convert rcu_nohz_full_cpu() ULONG_CMP_LT() to time_before()

This commit converts the ULONG_CMP_LT() in rcu_nohz_full_cpu() to
time_before() to reflect the fact that it is comparing a timestamp to
the jiffies counter.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/tree_plugin.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 5cd27c2..5771e32 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -2537,7 +2537,7 @@ static bool rcu_nohz_full_cpu(void)
 #ifdef CONFIG_NO_HZ_FULL
 	if (tick_nohz_full_cpu(smp_processor_id()) &&
 	    (!rcu_gp_in_progress() ||
-	     ULONG_CMP_LT(jiffies, READ_ONCE(rcu_state.gp_start) + HZ)))
+	     time_before(jiffies, READ_ONCE(rcu_state.gp_start) + HZ)))
 		return true;
 #endif /* #ifdef CONFIG_NO_HZ_FULL */
 	return false;