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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 9298CC282C4 for ; Mon, 4 Feb 2019 21:07:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5B1CB2175B for ; Mon, 4 Feb 2019 21:07:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549314460; bh=awcOFxXuAB7snDuDrXhqyOS89kVZGjIAerQumthlT+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:List-ID:From; b=g2mllyQqEzBi473JVbaMUGga2Hxw3Y5x3+ZYkzr4LRIs63DeFyOYDP6T7+nJwbaxZ 4+QZ2z7iUrHD0DIFAPLoeEVhx/AMWWjYIMn0JGixhJGCOB3KCjZZMgQD/wJqxNitqQ Il15cdnTA3dk9W/hRPWFwLVR2O9RsZS2wLyP1lFA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730016AbfBDVHi (ORCPT ); Mon, 4 Feb 2019 16:07:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:32918 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728004AbfBDVHd (ORCPT ); Mon, 4 Feb 2019 16:07:33 -0500 Received: from localhost.localdomain (c-98-220-238-81.hsd1.il.comcast.net [98.220.238.81]) (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 C15252082E; Mon, 4 Feb 2019 21:07:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549314453; bh=awcOFxXuAB7snDuDrXhqyOS89kVZGjIAerQumthlT+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=AeEGIThexPWAv3KZRfIjqQezZdY+cydXQd54QFrf0a2CzF7Wspj1QgyZAXzKqrD3G iylF4/lHtCQeXAM6VUrT0EJB/wej6QluXOI8D2OHuleWbZpaQEa6eG8pezqn4lmb1w AryA0uNuoXZts6erimzMtV7XCPoSFggdVUFTPumE= From: Tom Zanussi To: rostedt@goodmis.org Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Tom Zanussi , Joe Perches Subject: [PATCH 1/2] tracing: Use str_has_prefix() in synth_event_create() Date: Mon, 4 Feb 2019 15:07:23 -0600 Message-Id: <03418373fd1e80030e7394b8e3e081c5de28a710.1549309756.git.tom.zanussi@linux.intel.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Zanussi Since we now have a str_has_prefix() that returns the length, we can use that instead of explicitly calculating it. Signed-off-by: Tom Zanussi Cc: Joe Perches --- kernel/trace/trace_events_hist.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 449d90cfa151..c4a667503bf0 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1200,8 +1200,8 @@ static int synth_event_create(int argc, const char **argv) /* This interface accepts group name prefix */ if (strchr(name, '/')) { - len = sizeof(SYNTH_SYSTEM "/") - 1; - if (strncmp(name, SYNTH_SYSTEM "/", len)) + len = str_has_prefix(name, SYNTH_SYSTEM "/"); + if (len == 0) return -EINVAL; name += len; } -- 2.14.1