linux-kernel - Re: [PATCH 2/8] ACPI, CPER: Update cper info

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Message-ID: <525FD631.5080109@linux.vnet.ibm.com>
Date:	Thu, 17 Oct 2013 17:51:05 +0530
From:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:	tony.luck@...el.com, bp@...en8.de, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 2/8] ACPI, CPER: Update cper info

On 10/16/2013 07:09 AM, Chen Gong wrote:
> On Tue, Oct 15, 2013 at 11:47:23PM +0530, Naveen N. Rao wrote:
>> Date: Tue, 15 Oct 2013 23:47:23 +0530
>> From: "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
>> To: "Chen, Gong" <gong.chen@...ux.intel.com>
>> Cc: tony.luck@...el.com, bp@...en8.de, linux-kernel@...r.kernel.org,
>>   linux-acpi@...r.kernel.org
>> Subject: Re: [PATCH 2/8] ACPI, CPER: Update cper info
>> User-Agent: Mutt/1.5.21 (2010-09-15)
>>
>> On 2013/10/11 02:32AM, Chen Gong wrote:
>>> To satisfy the necessary of following patches and make related definition
>>> more clear, update some definitions about CPER. No functional changes.
>>>
>>> Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
>>> ---
>>>   drivers/acpi/apei/apei-internal.h | 12 ++++-----
>>>   drivers/acpi/apei/cper.c          | 46 ++++++++++++++++-----------------
>>>   drivers/acpi/apei/ghes.c          | 54 +++++++++++++++++++--------------------
>>>   include/acpi/actbl1.h             | 14 +++++-----
>>>   include/acpi/ghes.h               |  2 +-
>>>   5 files changed, 64 insertions(+), 64 deletions(-)
>>>
>>> diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
>>> index f220d64..21ba34a 100644
>>> --- a/drivers/acpi/apei/apei-internal.h
>>> +++ b/drivers/acpi/apei/apei-internal.h
>>> @@ -122,11 +122,11 @@ struct dentry;
>>>   struct dentry *apei_get_debugfs_dir(void);
>>>
>>>   #define apei_estatus_for_each_section(estatus, section)			\
>>> -	for (section = (struct acpi_hest_generic_data *)(estatus + 1);	\
>>> +	for (section = (struct acpi_generic_data *)(estatus + 1);	\
>>
>> This is a good one to rename, though I wonder if acpi_generic_error_data
>> is more appropriate?
>>
>>>   	     (void *)section - (void *)estatus < estatus->data_length;	\
>>>   	     section = (void *)(section+1) + section->error_data_length)
>>>
>>> -static inline u32 apei_estatus_len(struct acpi_hest_generic_status *estatus)
>>> +static inline u32 cper_estatus_len(struct acpi_generic_status *estatus)
>>
>> Not sure I understand the rationale for these changes - we are still
>> dealing with ACPI/APEI generic error status/data structures. So, why
>> the cper_ prefix?
>>
>
> Because CPER is not APEI specific, beside APEI, some others like eMCA
> needs this.

Right, but even the document you point to refers to these structures as 
what they are: ACPI Generic error status/data. Clearly, CPER is an 
incorrect prefix here since CPER/UEFI does *not* seem to have the same 
structure format.


Regards,
Naveen

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