From: Cao jin <caoj.fnst@cn.fujitsu.com>
To: Tejun Heo <tj@kernel.org>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
arnd@arndb.de, cl@linux.com
Subject: Re: [PATCH] percpu: drop useless macro PER_CPU_DEF_ATTRIBUTES
Date: Thu, 30 Mar 2017 11:34:56 +0800 [thread overview]
Message-ID: <58DC7CE0.4080402@cn.fujitsu.com> (raw)
In-Reply-To: <20170329152827.GB30385@htj.duckdns.org>
On 03/29/2017 11:28 PM, Tejun Heo wrote:
> On Wed, Mar 29, 2017 at 10:38:17AM +0800, Cao jin wrote:
>> On 03/29/2017 12:00 AM, Tejun Heo wrote:
>>> On Tue, Mar 28, 2017 at 04:35:07PM +0800, Cao jin wrote:
>>>> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
>>>
>>> I'm not sure. I think I used it during development and it's not like
>>> it costs anything to keep.
>>
>> It easily confusing newbies without any comments for its purpose.
>
> percpu variable handling is pretty complex to begin with. I don't buy
> that an empty default attribute macro adds anything noticeable there.
>
>> Temporary using during development seems not good to persist. Could I
>> know its purpose?
>
> I don't remember the exact details but at the same time I don't see
> the value of the proposed change. We can apply or not apply the patch
> and either way wouldn't make any noticeable difference. What's the
> point?
>
> Thanks.
>
It doesn't matter whether apply or not. I just start to read these code
and want to know what every tiny symbol is for. Thanks for your time.
--
Sincerely,
Cao jin
WARNING: multiple messages have this Message-ID (diff)
From: Cao jin <caoj.fnst@cn.fujitsu.com>
To: Tejun Heo <tj@kernel.org>
Cc: <linux-arch@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<arnd@arndb.de>, <cl@linux.com>
Subject: Re: [PATCH] percpu: drop useless macro PER_CPU_DEF_ATTRIBUTES
Date: Thu, 30 Mar 2017 11:34:56 +0800 [thread overview]
Message-ID: <58DC7CE0.4080402@cn.fujitsu.com> (raw)
In-Reply-To: <20170329152827.GB30385@htj.duckdns.org>
On 03/29/2017 11:28 PM, Tejun Heo wrote:
> On Wed, Mar 29, 2017 at 10:38:17AM +0800, Cao jin wrote:
>> On 03/29/2017 12:00 AM, Tejun Heo wrote:
>>> On Tue, Mar 28, 2017 at 04:35:07PM +0800, Cao jin wrote:
>>>> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
>>>
>>> I'm not sure. I think I used it during development and it's not like
>>> it costs anything to keep.
>>
>> It easily confusing newbies without any comments for its purpose.
>
> percpu variable handling is pretty complex to begin with. I don't buy
> that an empty default attribute macro adds anything noticeable there.
>
>> Temporary using during development seems not good to persist. Could I
>> know its purpose?
>
> I don't remember the exact details but at the same time I don't see
> the value of the proposed change. We can apply or not apply the patch
> and either way wouldn't make any noticeable difference. What's the
> point?
>
> Thanks.
>
It doesn't matter whether apply or not. I just start to read these code
and want to know what every tiny symbol is for. Thanks for your time.
--
Sincerely,
Cao jin
next prev parent reply other threads:[~2017-03-30 3:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-28 8:35 [PATCH] percpu: drop useless macro PER_CPU_DEF_ATTRIBUTES Cao jin
2017-03-28 8:35 ` Cao jin
2017-03-28 16:00 ` Tejun Heo
2017-03-29 2:38 ` Cao jin
2017-03-29 2:38 ` Cao jin
2017-03-29 15:28 ` Tejun Heo
2017-03-30 3:34 ` Cao jin [this message]
2017-03-30 3:34 ` Cao jin
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