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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 94B22C48BD1 for ; Thu, 10 Jun 2021 01:02:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BEF161417 for ; Thu, 10 Jun 2021 01:02:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230162AbhFJBD6 (ORCPT ); Wed, 9 Jun 2021 21:03:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:38956 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229985AbhFJBDx (ORCPT ); Wed, 9 Jun 2021 21:03:53 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 45FE66140D; Thu, 10 Jun 2021 01:01:58 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.94.2) (envelope-from ) id 1lr953-002bYH-Az; Wed, 09 Jun 2021 21:01:57 -0400 Message-ID: <20210610010157.181456048@goodmis.org> User-Agent: quilt/0.66 Date: Wed, 09 Jun 2021 21:01:33 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Abaci Robot , Jiapeng Chong Subject: [for-next][PATCH 03/11] tracing: Remove redundant assignment to event_var References: <20210610010130.069460694@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiapeng Chong Variable event_var is set to 'ERR_PTR(-EINVAL)', but this value is never read as it is overwritten or not used later on, hence it is a redundant assignment and can be removed. Clean up the following clang-analyzer warning: kernel/trace/trace_events_hist.c:2437:21: warning: Value stored to 'event_var' during its initialization is never read [clang-analyzer-deadcode.DeadStores]. Link: https://lkml.kernel.org/r/1620470236-26562-1-git-send-email-jiapeng.chong@linux.alibaba.com Reported-by: Abaci Robot Signed-off-by: Jiapeng Chong Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_events_hist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index c1abd63f1d6c..dacd6fe0f60c 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -2434,12 +2434,12 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data, char *subsys_name, char *event_name, char *field_name) { struct trace_array *tr = target_hist_data->event_file->tr; - struct hist_field *event_var = ERR_PTR(-EINVAL); struct hist_trigger_data *hist_data; unsigned int i, n, first = true; struct field_var_hist *var_hist; struct trace_event_file *file; struct hist_field *key_field; + struct hist_field *event_var; char *saved_filter; char *cmd; int ret; -- 2.30.2