From nobody Sat May 10 06:03:17 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com ARC-Seal: i=1; a=rsa-sha256; t=1604674507; cv=none; d=zohomail.com; s=zohoarc; b=LDrLlQ55a3WlWxE/7PK5a3qyRo36gtcKb9Z2OHbyd8Me5cipfpIw1jbrY7bnp42KNDpwuM2xDjREXD+gY9TkLxdLwJdTwfzBNQo+x7zEDv3nBJdLKolz3gPk/6wBe+2MZ8293AB5vrKT39NpAfWM+Av5V0vFrW3R958+/+asGh8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1604674507; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Id:MIME-Version:Message-ID:Subject:To; bh=x2rRgfyY/KXyuivuXMp3I4aTZ0dEVwQ51RNk4G6F0go=; b=fbbNMLBiY4BI9ogWaiZGEyiftADzwDNWderfz1VnJjzSBtqiZ+4h+QcZOfbDyrdZZ3hr2d179xF1TpfTw/Ok6QBBWxFHCLqyirHgDDRqz0F2uiUxRLZUlPm0Qmbnos7CrRxytKrfCTx1tKrPZUItwOP1K4MHAWSyTwVohK553xU= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 1604674506980135.88338585976066; Fri, 6 Nov 2020 06:55:06 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727494AbgKFOzF (ORCPT ); Fri, 6 Nov 2020 09:55:05 -0500 Received: from out30-131.freemail.mail.aliyun.com ([115.124.30.131]:45987 "EHLO out30-131.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726422AbgKFOzF (ORCPT ); Fri, 6 Nov 2020 09:55:05 -0500 Received: from aliy80.localdomain(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UERBQOx_1604674489) by smtp.aliyun-inc.com(127.0.0.1); Fri, 06 Nov 2020 22:54:49 +0800 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R941e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04357;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=3;SR=0;TI=SMTPD_---0UERBQOx_1604674489; From: Alex Shi Cc: Steven Rostedt , Ingo Molnar , linux-kernel@vger.kernel.org Subject: [PATCH] ftrace: remove unused varible 'ret' Date: Fri, 6 Nov 2020 22:54:46 +0800 Message-Id: <1604674486-52350-1-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 'ret' in 2 functions are not used. and one of them is a void function. So remove them to avoid gcc warning: kernel/trace/ftrace.c:4166:6: warning: variable =E2=80=98ret=E2=80=99 set b= ut not used [-Wunused-but-set-variable] kernel/trace/ftrace.c:5571:6: warning: variable =E2=80=98ret=E2=80=99 set b= ut not used [-Wunused-but-set-variable] Signed-off-by: Alex Shi Cc: Steven Rostedt =20 Cc: Ingo Molnar =20 Cc: linux-kernel@vger.kernel.org=20 --- kernel/trace/ftrace.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 8185f7240095..466b8359cbad 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -4163,7 +4163,6 @@ static void process_mod_list(struct list_head *head, = struct ftrace_ops *ops, struct ftrace_hash **orig_hash, *new_hash; LIST_HEAD(process_mods); char *func; - int ret; =20 mutex_lock(&ops->func_hash->regex_lock); =20 @@ -4216,7 +4215,7 @@ static void process_mod_list(struct list_head *head, = struct ftrace_ops *ops, =20 mutex_lock(&ftrace_lock); =20 - ret =3D ftrace_hash_move_and_update_ops(ops, orig_hash, + ftrace_hash_move_and_update_ops(ops, orig_hash, new_hash, enable); mutex_unlock(&ftrace_lock); =20 @@ -5568,7 +5567,6 @@ int ftrace_regex_release(struct inode *inode, struct = file *file) struct ftrace_hash **orig_hash; struct trace_parser *parser; int filter_hash; - int ret; =20 if (file->f_mode & FMODE_READ) { iter =3D m->private; @@ -5596,7 +5594,7 @@ int ftrace_regex_release(struct inode *inode, struct = file *file) orig_hash =3D &iter->ops->func_hash->notrace_hash; =20 mutex_lock(&ftrace_lock); - ret =3D ftrace_hash_move_and_update_ops(iter->ops, orig_hash, + ftrace_hash_move_and_update_ops(iter->ops, orig_hash, iter->hash, filter_hash); mutex_unlock(&ftrace_lock); } else { --=20 1.8.3.1