From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 120C4C2BA19 for ; Wed, 15 Apr 2020 17:11:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB532216FD for ; Wed, 15 Apr 2020 17:11:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586970707; bh=mlApiG8qTOwKhA8HRb4oZyqEFXkqBHFParB9JqIEgEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Ct6cu6u4bl8pyjAg3TPHSkbXvkBxIB2+QqIHWtduanNOJhYMxxCJbejoy+gu+ep3X 2G7QMdWtVhC+zsnQCAouHE+bZ1ZIVZqGPCPP3JKL7zpIacaSajy19gVbTaULIJkujG x25eyEclzrtrf5Yhwj5keSShtYzJZGOYKaNv07/0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1416375AbgDORLq (ORCPT ); Wed, 15 Apr 2020 13:11:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:42438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2410726AbgDORLC (ORCPT ); Wed, 15 Apr 2020 13:11:02 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A2F8D21927; Wed, 15 Apr 2020 17:11:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586970661; bh=mlApiG8qTOwKhA8HRb4oZyqEFXkqBHFParB9JqIEgEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eqyw29CcPH3nQsxH0nGWEb+OBAAFCvW7E9TIq2YNPd8stLv1xpkCxHcC+CL33mOqM +E9tAWaN+nWotg9YZcaSM9RG88c61Bc3ZQHpXI8y8FW0LEmzA+1M09yrXWsVNNQSCd uRYFvE3PTgKxnnjfBiYjMNkP2/B0dRX6D20dKNZg= 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, dipankar@in.ibm.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" Subject: [PATCH tip/core/rcu 17/19] rcu: Convert ULONG_CMP_GE() to time_after() for jiffy comparison Date: Wed, 15 Apr 2020 10:10:52 -0700 Message-Id: <20200415171054.9013-17-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200415171017.GA7821@paulmck-ThinkPad-P72> References: <20200415171017.GA7821@paulmck-ThinkPad-P72> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" This commit converts the ULONG_CMP_GE() in rcu_gp_fqs_loop() to time_after() to reflect the fact that it is comparing a timestamp to the jiffies counter. Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 97c0b47..66321cc 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1700,7 +1700,7 @@ static void rcu_gp_fqs_loop(void) !rcu_preempt_blocked_readers_cgp(rnp)) break; /* If time for quiescent-state forcing, do it. */ - if (ULONG_CMP_GE(jiffies, rcu_state.jiffies_force_qs) || + if (!time_after(rcu_state.jiffies_force_qs, jiffies) || (gf & RCU_GP_FLAG_FQS)) { trace_rcu_grace_period(rcu_state.name, rcu_state.gp_seq, TPS("fqsstart")); -- 2.9.5