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 795A6C433DF for ; Tue, 23 Jun 2020 00:22:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5B3D420702 for ; Tue, 23 Jun 2020 00:22:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592871759; bh=feeXUL4kCN4WeY6HYamgBrByXLXjv+/PBNopWg6XohM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kxgw88RIma2iki59xHuooq0zUZuwffdbV0AWCqI7WST7c1PmM9xRo8L80LadxrSYu GIr801Jenry7JomaBwJtmlHZZYBPJ3Bxe5x5PDARlsp+mWIHaACGPW7+/a+HMTeZa0 X4IOHY3fNwHpP51RCBlgkBtoMlPLWwkQVNG9/bwg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731680AbgFWAWZ (ORCPT ); Mon, 22 Jun 2020 20:22:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:48634 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731575AbgFWAVy (ORCPT ); Mon, 22 Jun 2020 20:21:54 -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 8198D2098B; Tue, 23 Jun 2020 00:21:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592871713; bh=feeXUL4kCN4WeY6HYamgBrByXLXjv+/PBNopWg6XohM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o1RSvWKcFX9Jfz0nraiZbVcoFv15iVvG4G5jWgfHw0xjHKCAr7nEaLaFpHoQRpB/F vIbuPL4NPVvGZw6wF+vUZAI+IjdA2UbhJYRUx4OFhwy/8UcDSqOgCvJ3SNj8Yp1zjn jnhMnnlGvaxqRCD953azwg+6SV2YzTiT6Hr9YAVw= 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, Wei Yang , "Paul E . McKenney" Subject: [PATCH tip/core/rcu 21/26] rcu: grplo/grphi just records CPU number Date: Mon, 22 Jun 2020 17:21:42 -0700 Message-Id: <20200623002147.25750-21-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200623002128.GA25456@paulmck-ThinkPad-P72> References: <20200623002128.GA25456@paulmck-ThinkPad-P72> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wei Yang We store lowest and highest CPU number belongs to a rcu_node, which is not the group number. Signed-off-by: Wei Yang Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 09ec93b..9f903f5 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -73,8 +73,8 @@ struct rcu_node { unsigned long ffmask; /* Fully functional CPUs. */ unsigned long grpmask; /* Mask to apply to parent qsmask. */ /* Only one bit will be set in this mask. */ - int grplo; /* lowest-numbered CPU or group here. */ - int grphi; /* highest-numbered CPU or group here. */ + int grplo; /* lowest-numbered CPU here. */ + int grphi; /* highest-numbered CPU here. */ u8 grpnum; /* CPU/group number for next level up. */ u8 level; /* root is at level 0. */ bool wait_blkd_tasks;/* Necessary to wait for blocked tasks to */ -- 2.9.5