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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 A9B60C433E1 for ; Fri, 12 Jun 2020 02:08:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9121420853 for ; Fri, 12 Jun 2020 02:08:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726542AbgFLCI0 (ORCPT ); Thu, 11 Jun 2020 22:08:26 -0400 Received: from out30-42.freemail.mail.aliyun.com ([115.124.30.42]:52798 "EHLO out30-42.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726327AbgFLCIX (ORCPT ); Thu, 11 Jun 2020 22:08:23 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=richard.weiyang@linux.alibaba.com;NM=1;PH=DS;RN=10;SR=0;TI=SMTPD_---0U.Jo8A0_1591927699; Received: from localhost(mailfrom:richard.weiyang@linux.alibaba.com fp:SMTPD_---0U.Jo8A0_1591927699) by smtp.aliyun-inc.com(127.0.0.1); Fri, 12 Jun 2020 10:08:19 +0800 From: Wei Yang To: paulmck@kernel.org, josh@joshtriplett.org, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, trivial@kernel.org Cc: rcu@vger.kernel.org, linux-kernel@vger.kernel.org, Wei Yang Subject: [PATCH 3/4] rcu: grpnum just records group number Date: Fri, 12 Jun 2020 10:07:54 +0800 Message-Id: <20200612020755.50526-4-richard.weiyang@linux.alibaba.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20200612020755.50526-1-richard.weiyang@linux.alibaba.com> References: <20200612020755.50526-1-richard.weiyang@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org grpnum in rcu_node means the position in its parent, which is not the CPU number even in last level. Signed-off-by: Wei Yang --- kernel/rcu/tree.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index ce9ab7371706..512829eed545 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -75,7 +75,7 @@ struct rcu_node { /* Only one bit will be set in this mask. */ int grplo; /* lowest-numbered CPU here. */ int grphi; /* highest-numbered CPU here. */ - u8 grpnum; /* CPU/group number for next level up. */ + u8 grpnum; /* group number for next level up. */ u8 level; /* root is at level 0. */ bool wait_blkd_tasks;/* Necessary to wait for blocked tasks to */ /* exit RCU read-side critical sections */ -- 2.20.1 (Apple Git-117)