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 DB984C2BA19 for ; Wed, 15 Apr 2020 17:11:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7FF021835 for ; Wed, 15 Apr 2020 17:11:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586970702; bh=SyzD83B0mOK8LK3sIjriYCc7SfUO2UZRZFCObjgRwhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QTk3RHqR0Bgg1MjYlSNYOUuqq9BDTlPUypOF+EI/+BbHZv6xa0W/YwnWxqNjsBeg6 8vhloMWFA7mdyhvf/E+kujOALWAg7eC23SjH977Dg3p/BStSz1APuDVqXwq5cKFzlf 6XpfHtVpVMzqBBsnC/JP8caI1M9GXtxEdW6liPwg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410789AbgDORLk (ORCPT ); Wed, 15 Apr 2020 13:11:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:42444 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2410727AbgDORLC (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 01ABA221EC; 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=1586970662; bh=SyzD83B0mOK8LK3sIjriYCc7SfUO2UZRZFCObjgRwhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IVtQ+x3+BN5ejTPVSBhFGZghA9FL7pWprKe3gkHT9p3va4eT0fgeRA8wgMIFwdp6d lBE1ohy3Hdq0dF+ElBwII7WSMg798jUR76T8PA6vcfOSytvgSVNw8GG5YfNKWLjc+w J8HPEi40eLjk2ZwULyh6zI8ggejZ/+sXuop9wvY0= 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 18/19] rcu: Convert rcu_initiate_boost() ULONG_CMP_GE() to time_after() Date: Wed, 15 Apr 2020 10:10:53 -0700 Message-Id: <20200415171054.9013-18-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_initiate_boost() 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_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 664d0aa..5cd27c2 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1080,7 +1080,7 @@ static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags) (rnp->gp_tasks != NULL && rnp->boost_tasks == NULL && rnp->qsmask == 0 && - (ULONG_CMP_GE(jiffies, rnp->boost_time) || rcu_state.cbovld))) { + (!time_after(rnp->boost_time, jiffies) || rcu_state.cbovld))) { if (rnp->exp_tasks == NULL) WRITE_ONCE(rnp->boost_tasks, rnp->gp_tasks); raw_spin_unlock_irqrestore_rcu_node(rnp, flags); -- 2.9.5