Received: by 2002:a25:23cc:0:0:0:0:0 with SMTP id j195csp845986ybj;
        Thu, 7 May 2020 08:55:52 -0700 (PDT)
X-Google-Smtp-Source: APiQypLiPm1XogTvqdqYghjRYP0uShZ/UpRMpFPzzfjwNzBE6uBfBQ1DNs81La6uqAbT7to0vSeJ
X-Received: by 2002:a05:6402:2076:: with SMTP id bd22mr12889145edb.334.1588866952366;
        Thu, 07 May 2020 08:55:52 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1588866952; cv=none;
        d=google.com; s=arc-20160816;
        b=wo/ZN3axsAWr10RnRhmzkzC/2PTOFFN5zL3N5MfSCpFUrxT57xEAb/tst1d+eqzsuz
         d9SKeArLhedAbNquCcXbFU4MLkWdRdwmWcUkhmO0cNlNx3NXuIRbawqYFVNzu1xtjpLu
         2YDJmFbAI9kXsbo7vTkhjVbeb71qb95rhsLQZQUMZ9QUA0Nu4vYmqwgReP06VM2rsnil
         67fbViycfjDP5dhHgMe18Qz2cH+FoV8bFyMqeIxvBuzQCebsgCTwIf/RpqDrN9kN9A63
         4M4hLN3Sy8f1krUDx312h8ImwA9NAkyxJZoVsUiza0ypPZUC1wc+nHt+Vo7juEbt1m8f
         EWig==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:content-transfer-encoding:mime-version
         :references:in-reply-to:message-id:subject:cc:to:from:date
         :dkim-signature;
        bh=qGf++2WPDKJgtvQgGVAdPJvld3QlBDHINXSeRCoQB1I=;
        b=vkfO1LoSa65uImgJHI7Euo6iV9j/zONQuxOY3MJEg8fiLSNe9yeWcuXz2S84+3F7ow
         e+4UHy5rI7zIWannLXiV9QweVpd5nX6X3j9vwk22N1y5aU/tWNh0Vo8uqumMUSRCWDRV
         7Lw3iuw7sPn9xcIcqoTPeUiUmQiwVcwrdrMp1dnuRB/DBR1pZ1cdLdV4NqU7u0Ynd11U
         ijQBYhtMETHgvvM2EeFNYFH41uPP72ePSwjWmIDeD1dYLeZMc0BG3A6MR1QLphLA4R6i
         DCcX+mGthuCcFJ6BOyIaZUyHX829G9rsbon6sy5YtohlzCvxCLQO3mhi4cmhXJutekG2
         OSGA==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@kernel.org header.s=default header.b=XkWD3pD6;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18])
        by mx.google.com with ESMTP id u8si3191204eds.295.2020.05.07.08.55.27;
        Thu, 07 May 2020 08:55:52 -0700 (PDT)
Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@kernel.org header.s=default header.b=XkWD3pD6;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1727887AbgEGPwH (ORCPT <rfc822;tnerolf.eriarrach@gmail.com>
        + 99 others); Thu, 7 May 2020 11:52:07 -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 S1727794AbgEGPwH (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 7 May 2020 11:52:07 -0400
Received: from devnote2 (NE2965lan1.rev.em-net.ne.jp [210.141.244.193])
        (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 8681420659;
        Thu,  7 May 2020 15:52:04 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;
        s=default; t=1588866726;
        bh=mlvS0oh7kj4TmZBTpYgoFJD7r3X4hwbv2okMwAawp8I=;
        h=Date:From:To:Cc:Subject:In-Reply-To:References:From;
        b=XkWD3pD6+MGrhYvmBVy2mHoVgjB6msb46prlZvstna19R2ybX869eo1ERqXuivXwd
         zE5Qj+x3t5lDsUi7VxW9JIQsbm5T2nQcOS8aExAUo2V4ChD04HuX0TPksr+uZBVexx
         7VKSFUhrDhoTldio0yZauOv2oKPki7TUI8bFsh2A=
Date:   Fri, 8 May 2020 00:52:02 +0900
From:   Masami Hiramatsu <mhiramat@kernel.org>
To:     Andreas Schwab <schwab@linux-m68k.org>
Cc:     Shuah Khan <shuah@kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
        Tom Zanussi <tom.zanussi@linux.intel.com>,
        Li Philip <philip.li@intel.com>,
        Liu Yiding <yidingx.liu@intel.com>
Subject: Re: [PATCH 3/3] selftests/ftrace: Use /bin/echo instead of built-in
 echo
Message-Id: <20200508005202.fb39efc3fae84924878f36f4@kernel.org>
In-Reply-To: <87eerwkskr.fsf@igel.home>
References: <158834025077.28357.15141584656220094821.stgit@devnote2>
        <158834028054.28357.398159034694277189.stgit@devnote2>
        <87eerwkskr.fsf@igel.home>
X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.32; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Thu, 07 May 2020 11:22:28 +0200
Andreas Schwab <schwab@linux-m68k.org> wrote:

> On Mai 01 2020, Masami Hiramatsu wrote:
> 
> > Since the built-in echo has different behavior in POSIX shell
> > (dash) and bash, we forcibly use /bin/echo -E (not interpret
> > backslash escapes) by default.
> 
> How about using printf instead (at least where it matters)?

Hmm, I think replacing all echos with printf in the testcase might be
much harder than this...

Thank you,

-- 
Masami Hiramatsu <mhiramat@kernel.org>