linux-kernel - Re: [RFC 1/1] edac: Add a counter parameter for edac_device_handle

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Message-ID: <7d6aac9e-20e5-3901-a423-d76ac917b251@amazon.com>
Date:   Thu, 1 Aug 2019 15:29:03 +0300
From:   "Hawa, Hanna" <hhhawa@...zon.com>
To:     Robert Richter <rric@...nel.org>
CC:     <thor.thayer@...ux.intel.com>, <bp@...en8.de>,
        <mchehab@...nel.org>, <james.morse@....com>, <morbidrsa@...il.com>,
        <ralf@...ux-mips.org>, <david.daney@...ium.com>,
        <andy.gross@...aro.org>, <david.brown@...aro.org>,
        <ckadabi@...eaurora.org>, <vnkgutta@...eaurora.org>,
        <jglauber@...ium.com>, <khuong@...amperecomputing.com>,
        <dwmw@...zon.co.uk>, <benh@...zon.com>, <ronenk@...zon.com>,
        <talel@...zon.com>, <jonnyc@...zon.com>, <hanochu@...zon.com>,
        <linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mips@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: Re: [RFC 1/1] edac: Add a counter parameter for
 edac_device_handle_ue/ce()



On 8/1/2019 2:35 PM, Robert Richter wrote:
> On 15.07.19 13:53:07, Hanna Hawa wrote:
>> Add a counter parameter in order to avoid losing errors count for edac
>> device, the error count reports the number of errors reported by an edac
>> device similar to the way MC_EDAC do.
>>
>> Signed-off-by: Hanna Hawa <hhhawa@...zon.com>
>> ---
>>   drivers/edac/altera_edac.c      | 20 ++++++++++++--------
>>   drivers/edac/amd8111_edac.c     |  6 +++---
>>   drivers/edac/cpc925_edac.c      |  4 ++--
>>   drivers/edac/edac_device.c      | 18 ++++++++++--------
>>   drivers/edac/edac_device.h      |  8 ++++++--
>>   drivers/edac/highbank_l2_edac.c |  4 ++--
>>   drivers/edac/mpc85xx_edac.c     |  4 ++--
>>   drivers/edac/mv64x60_edac.c     |  4 ++--
>>   drivers/edac/octeon_edac-l2c.c  | 20 ++++++++++----------
>>   drivers/edac/octeon_edac-pc.c   |  6 +++---
>>   drivers/edac/qcom_edac.c        |  8 ++++----
>>   drivers/edac/thunderx_edac.c    | 10 +++++-----
>>   drivers/edac/xgene_edac.c       | 26 +++++++++++++-------------
>>   13 files changed, 74 insertions(+), 64 deletions(-)
> 
>> diff --git a/drivers/edac/edac_device.h b/drivers/edac/edac_device.h
>> index 1aaba74..cf1a1da 100644
>> --- a/drivers/edac/edac_device.h
>> +++ b/drivers/edac/edac_device.h
>> @@ -290,23 +290,27 @@ extern struct edac_device_ctl_info *edac_device_del_device(struct device *dev);
>>    *	perform a common output and handling of an 'edac_dev' UE event
>>    *
>>    * @edac_dev: pointer to struct &edac_device_ctl_info
>> + * @error_count: number of errors of the same type
>>    * @inst_nr: number of the instance where the UE error happened
>>    * @block_nr: number of the block where the UE error happened
>>    * @msg: message to be printed
>>    */
>>   extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
>> -				int inst_nr, int block_nr, const char *msg);
>> +				  u16 error_count, int inst_nr, int block_nr,
>> +				  const char *msg);
>>   /**
>>    * edac_device_handle_ce():
>>    *	perform a common output and handling of an 'edac_dev' CE event
>>    *
>>    * @edac_dev: pointer to struct &edac_device_ctl_info
>> + * @error_count: number of errors of the same type
>>    * @inst_nr: number of the instance where the CE error happened
>>    * @block_nr: number of the block where the CE error happened
>>    * @msg: message to be printed
>>    */
>>   extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
> 
> How about renaming this to __edac_device_handle_ce() and then have 2
> macros for:
> 
>   * edac_device_handle_ce() to keep old i/f.
> 
>   * edac_device_handle_ce_count(), with count parameter added.
> 
> Same for uncorrectable errors.
> 
> Code of other driver can be kept as it is then.

Don't you think it'll be confused to have different APIs between EDAC_MC 
and EDAC_DEVICE?
(in MC the count passed as part of edac_mc_handle_error())

I don't have strong objection, the change for other drivers is not that 
hard.

> 
> Thanks,
> 
> -Robert
> 
>> -				int inst_nr, int block_nr, const char *msg);
>> +				  u16 error_count, int inst_nr, int block_nr,
>> +				  const char *msg);