From nobody Sun Feb 8 12:52:21 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13B6BEB64DA for ; Sat, 15 Jul 2023 03:08:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229926AbjGODI3 (ORCPT ); Fri, 14 Jul 2023 23:08:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229909AbjGODIZ (ORCPT ); Fri, 14 Jul 2023 23:08:25 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 917EA3A81; Fri, 14 Jul 2023 20:08:23 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4R2tZ51qmgzhYj0; Sat, 15 Jul 2023 11:07:41 +0800 (CST) Received: from huawei.com (10.174.151.185) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Sat, 15 Jul 2023 11:08:19 +0800 From: Miaohe Lin To: , , CC: , , Subject: [PATCH] cgroup: use cached local variable parent in for loop Date: Sat, 15 Jul 2023 11:08:29 +0800 Message-ID: <20230715030829.2343109-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.174.151.185] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use local variable parent to initialize iter tcgrp in for loop so the size of cgroup.o can be reduced by 64 bytes. No functional change intended. Signed-off-by: Miaohe Lin --- kernel/cgroup/cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 6225d5829459..033f38fb5cef 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5894,7 +5894,7 @@ static int cgroup_destroy_locked(struct cgroup *cgrp) parent->nr_threaded_children--; =20 spin_lock_irq(&css_set_lock); - for (tcgrp =3D cgroup_parent(cgrp); tcgrp; tcgrp =3D cgroup_parent(tcgrp)= ) { + for (tcgrp =3D parent; tcgrp; tcgrp =3D cgroup_parent(tcgrp)) { tcgrp->nr_descendants--; tcgrp->nr_dying_descendants++; /* --=20 2.33.0