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=-9.9 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 D5F8BC43444 for ; Tue, 15 Jan 2019 22:06:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A319821738 for ; Tue, 15 Jan 2019 22:06:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547589972; bh=iojhO78N/cfaFgOxdfWDUOBTLjJLdExL10gLTcBKJNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:List-ID:From; b=g/ClALxXV+0/AS6TgbTvuXcXMF7+mK4bFmpxLy4aZWnWw0bN/L805aLwHsxK55KW+ fJArwzugtEM9AtgWEULAln9386Iujc1UFboG/ZXiN2rzhU4vXmlaCBMZIDPPWQpl21 Q7ZQ9ShtbnX3M0xYROeXUzZcm4SGO8ZBUDaQMekk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390880AbfAOWGK (ORCPT ); Tue, 15 Jan 2019 17:06:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:49072 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390702AbfAOWGK (ORCPT ); Tue, 15 Jan 2019 17:06:10 -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 B875920896; Tue, 15 Jan 2019 22:06:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547589969; bh=iojhO78N/cfaFgOxdfWDUOBTLjJLdExL10gLTcBKJNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=Rhpf545a/rKe5zEBiGmLYtilUhXEQ6DPVu1sScHQXuFZ5tluDzkHUwIQwWJTpcz3M AgjhDuU3CgVbZtf7cChlfoXNyBJj75vOKwZgydhEUmWf4Lz3oJD6mcE/fIRBdjtp11 WJ2wqvacT7zWsTfgDsB1dAWPR63xNWApsV2e1l9Q= From: Tom Zanussi To: rostedt@goodmis.org Cc: tglx@linutronix.de, mhiramat@kernel.org, namhyung@kernel.org, vedang.patel@intel.com, bigeasy@linutronix.de, joel@joelfernandes.org, mathieu.desnoyers@efficios.com, julia@ni.com, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org Subject: [PATCH v12 01/16] tracing: Use str_has_prefix() in synth_event_create() Date: Tue, 15 Jan 2019 16:05:45 -0600 Message-Id: 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 --- kernel/trace/trace_events_hist.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 449d90cfa151..625725ae262f 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1200,8 +1200,7 @@ 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)) + if ((len = str_has_prefix(name, SYNTH_SYSTEM "/")) == 0) return -EINVAL; name += len; } -- 2.14.1