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=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 A1B85C4338F for ; Tue, 10 Aug 2021 02:07:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8955C61051 for ; Tue, 10 Aug 2021 02:07:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237411AbhHJCHz (ORCPT ); Mon, 9 Aug 2021 22:07:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:51000 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237382AbhHJCHh (ORCPT ); Mon, 9 Aug 2021 22:07:37 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 42E0661040; Tue, 10 Aug 2021 02:07:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628561235; bh=JSmjCt9aBGdj9hOSm6aKpUpqMXkuEWepoDs4IlQC5w0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VPtbLgiJcyoHuYYX9v7jCyTXu3q7EcrwAkd5zDGCHsu68kJ1oGlEQ+TgXpF4Javu5 sFvpTa3Y/wCV3ZR84yAlj0xz57o5+dWMFHVXTpzbjyTYP8Onc9kJnR6CwmVzCgYO/H Rh5OSWFl9wb+w/KvXnlHNPGw9B+pODz2szNDY08TeHsgASsshWtZnDUqQsEPJUvCZd sQbFW5a2In5bQhWIVQTIIzrKHRuwQYRYqxNT9sBE0lvQ/3cLdHvpqauHSAYcxBgOAo f6lvR7/EWsC50FMelUmg3y+0RRt8T9q7fKcLJO0PfGWwFvqpfnmbcoZNELY+3K6VSL aocYI6S78QnOg== From: Masami Hiramatsu To: Steven Rostedt Cc: linux-kernel@vger.kernel.org, Tom Zanussi , Masami Hiramatsu Subject: [PATCH v4 01/10] tracing/boot: Fix a hist trigger dependency for boot time tracing Date: Tue, 10 Aug 2021 11:07:14 +0900 Message-Id: <162856123376.203126.582144262622247352.stgit@devnote2> X-Mailer: git-send-email 2.25.1 In-Reply-To: <162856122550.203126.17607127017097781682.stgit@devnote2> References: <162856122550.203126.17607127017097781682.stgit@devnote2> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixes a build error when CONFIG_HIST_TRIGGERS=n with boot-time tracing. Since the trigger_process_regex() is defined only when CONFIG_HIST_TRIGGERS=y, if it is disabled, the 'actions' event option also must be disabled. Fixes: 81a59555ff15 ("tracing/boot: Add per-event settings") Signed-off-by: Masami Hiramatsu --- Changes in v3: - Use IS_ENABLED() instead of #ifdef and show an error if CONFIG_HIST_TRIGGERS is not set but per-event actions specified. --- kernel/trace/trace_boot.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c index 94ef2d099e32..d713714cba67 100644 --- a/kernel/trace/trace_boot.c +++ b/kernel/trace/trace_boot.c @@ -205,12 +205,15 @@ trace_boot_init_one_event(struct trace_array *tr, struct xbc_node *gnode, pr_err("Failed to apply filter: %s\n", buf); } - xbc_node_for_each_array_value(enode, "actions", anode, p) { - if (strlcpy(buf, p, ARRAY_SIZE(buf)) >= ARRAY_SIZE(buf)) - pr_err("action string is too long: %s\n", p); - else if (trigger_process_regex(file, buf) < 0) - pr_err("Failed to apply an action: %s\n", buf); - } + if (IS_ENABLED(CONFIG_HIST_TRIGGERS)) { + xbc_node_for_each_array_value(enode, "actions", anode, p) { + if (strlcpy(buf, p, ARRAY_SIZE(buf)) >= ARRAY_SIZE(buf)) + pr_err("action string is too long: %s\n", p); + else if (trigger_process_regex(file, buf) < 0) + pr_err("Failed to apply an action: %s\n", buf); + } + } else if (xbc_node_find_value(enode, "actions", NULL)) + pr_err("Failed to apply event actions because CONFIG_HIST_TRIGGERS is not set.\n"); if (xbc_node_find_value(enode, "enable", NULL)) { if (trace_event_enable_disable(file, 1, 0) < 0)