linux-kernel - Re: [PATCH v2 4/4] acpi: Move the verification of duplicate proc

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Date:   Thu, 2 Mar 2017 16:20:41 +0800
From:   Dou Liyang <douly.fnst@...fujitsu.com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     <mingo@...nel.org>, <peterz@...radead.org>, <rjw@...ysocki.net>,
        <hpa@...or.com>, <rafael@...nel.org>, <cl@...ux.com>,
        <tj@...nel.org>, <akpm@...ux-foundation.org>,
        <rafael.j.wysocki@...el.com>, <len.brown@...el.com>,
        <izumi.taku@...fujitsu.com>, <xiaolong.ye@...el.com>,
        <x86@...nel.org>, <linux-acpi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/4] acpi: Move the verification of duplicate proc_id
 from booting time to hot-plug time

Hi tglx,

At 03/01/2017 07:26 PM, Thomas Gleixner wrote:
> On Mon, 20 Feb 2017, Dou Liyang wrote:
>
> Please make your subject line short and a precise summary phrase, not an
> overlong sentence.
>
>> After we revert the the mapping of "cpuid <-> nodeid" fixed at the
>> booting time. and do it at the hot-plug time. we should also do the
>> verification of duplicate proc_id at the time.
>
> The revert is completely irrelevant to this change, really. The reference
> is just confusing.
>

Yes, Maybe I should split them like before.


>> The patch rename the verfication function and move it to
>> drivers/acpi::acpi_processor_get_info.
>
> See previous mails ....
>
> Let me give you another changelog example:
>

Thanks again.

> Subject: acpi/processor: Check for duplicate processor ids at hotplug time
>
>   The check for duplicate processor ids happens at boot time based on the
>   ACPI table contents, but the final sanity checks for a processor happen
>   at hotplug time.
>
>   At hotplug time, where the physical information is available, which might
>   differ from the ACPI table information, a check for duplicate processor
>   ids is missing.
>
>   Add it to the hotplug checks and rename the function so it better
>   reflects its purpose.
>
> Hmm?

Yes, thanks again. I learned a lot in that patchset.

>
>>
>> -bool __init acpi_processor_validate_proc_id(int proc_id)
>> +bool duplicate_processor_id(int proc_id)
>
> Please keep the acpi_ prefix. acpi_duplicate_processor_id().

OK, I will.

Thanks,

	Liyang.
>
> Thanks,
>
> 	tglx
>
>
>