From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751875AbcF0CWe (ORCPT <rfc822;w@1wt.eu>);
	Sun, 26 Jun 2016 22:22:34 -0400
Received: from szxga02-in.huawei.com ([119.145.14.65]:42114 "EHLO
	szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751785AbcF0CWd (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Sun, 26 Jun 2016 22:22:33 -0400
Subject: Re: [RFC PATCH v2 05/26] tools include: Sync math64.h and div64.h
To: Nilay Vaish <nilayvaish@gmail.com>
References: <1466940078-65581-1-git-send-email-hekuang@huawei.com>
 <1466940078-65581-6-git-send-email-hekuang@huawei.com>
 <CACbG30-yFbWEq46wHoNyNkG6Hr8+g_47XpcbGMtj4pjGjwyM9A@mail.gmail.com>
CC: <acme@kernel.org>, <peterz@infradead.org>, <mingo@redhat.com>,
        <jolsa@redhat.com>, <brendan.d.gregg@gmail.com>, <ast@kernel.org>,
        <alexander.shishkin@linux.intel.com>, <wangnan0@huawei.com>,
        "Linux Kernel list" <linux-kernel@vger.kernel.org>
From: Hekuang <hekuang@huawei.com>
Message-ID: <57708D96.5000907@huawei.com>
Date: Mon, 27 Jun 2016 10:21:10 +0800
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101
 Thunderbird/38.6.0
MIME-Version: 1.0
In-Reply-To: <CACbG30-yFbWEq46wHoNyNkG6Hr8+g_47XpcbGMtj4pjGjwyM9A@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Transfer-Encoding: 8bit
X-Originating-IP: [10.110.55.166]
X-CFilter-Loop: Reflected
X-Mirapoint-Virus-RAPID-Raw: score=unknown(0),
	refid=str=0001.0A020204.57708DA0.00C1,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0,
	ip=0.0.0.0,
	so=2013-06-18 04:22:30,
	dmn=2013-03-21 17:37:32
X-Mirapoint-Loop-Id: ba90aaff2619c0145e5b6ebb19b43a1e
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

hi

在 2016/6/27 5:08, Nilay Vaish 写道:
> On 26 June 2016 at 06:20, He Kuang <hekuang@huawei.com> wrote:
>> From: Wang Nan <wangnan0@huawei.com>
>>
>> This patch copies "include/linux/math64.h" into
>> "tools/include/linux/math64.h" and copies
>> "include/asm-generic/div64.h" into
>> "tools/include/asm-generic/div64.h", to enable other libraries use
>> arithmetic operation defined in them.
> This probably is a newbie question.  What prevents us from using the
> header files directly?
>
> --
> Nilay

For not being influenced by kernel headers update too much, perf adopts
the header files in its own folder.

Thank you.
>