linux-kernel - Re: [PATCH v5 3/4] PCI/DPC: Unify and plumb error handling into DPC

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Date:   Thu, 18 Jan 2018 23:30:01 +0530
From:   poza@...eaurora.org
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Keith Busch <keith.busch@...el.com>, Wei Zhang <wzhang@...com>,
        Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v5 3/4] PCI/DPC: Unify and plumb error handling into DPC

On 2018-01-18 22:01, Sinan Kaya wrote:
> On 1/18/2018 12:57 AM, poza@...eaurora.org wrote:
>> On 2018-01-18 10:47, poza@...eaurora.org wrote:
>>> On 2018-01-17 22:16, Sinan Kaya wrote:
>>>> On 1/17/2018 5:37 AM, Oza Pawandeep wrote:
>>>>> +++ b/include/linux/dpc.h
>>>>> @@ -0,0 +1,9 @@
>>>>> +/* SPDX-License-Identifier: GPL-2.0 */
>>>>> +
>>>>> +#ifndef _DPC_H_
>>>>> +#define _DPC_H_
>>>>> +
>>>>> +#define DPC_FATAL        4
>>>>> +
>>>>> +#endif //_DPC_H_
>>>>> +
>>>> 
>>>> can you keep this in drivers/pci.h and get rid of this file?
>>> 
>>> I thought about this, but if I keep it in drivers/pci.h,
>>> then AER's defines have to be in that as well. (for unification)
>>> 
>>> and then all the dependent files who are using AER_FATAL such as
>>> drivers/acpi/apei/ghees.c
>>> have to go on including this drivers file which is odd way of doing 
>>> it.
>>> 
>>> So I am not very sure about this....since AER_FATAL are in aer.h, I
>>> have made dpc.h
>>> 
>>> 
>>> Regards,
>>> Oza.
>> 
>> Should I be doing in next patch-set series ?
>> 
> 
> I think you would put into include/linux/pci.h only if there is an 
> external
> use of constant outside of drivers/pci directory. Otherwise, you should 
> keep
> the setting inside one of the header files in drivers/pci directory.
> 
> I don't see any other subsystem caring about DPC_FATAL definition.

ok so you are suggesting to move only DPC_FATAL ? so then AER can stay 
where it is.