linux-edac.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Hawa, Hanna" <hhhawa@amazon.com>
To: Borislav Petkov <bp@alien8.de>
Cc: <mchehab@kernel.org>, <james.morse@arm.com>,
	<rrichter@marvell.com>, <linux-edac@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <dwmw@amazon.co.uk>,
	<benh@amazon.com>, <ronenk@amazon.com>, <talel@amazon.com>,
	<jonnyc@amazon.com>, <hanochu@amazon.com>
Subject: Re: [PATCH v4 1/2] edac: Add an API for edac device to report for multiple errors
Date: Wed, 2 Oct 2019 12:25:55 +0300	[thread overview]
Message-ID: <5263edad-e0c9-a05a-72d7-e69c59d78d8f@amazon.com> (raw)
In-Reply-To: <20190930145046.GH29694@zn.tnic>



On 9/30/2019 5:50 PM, Borislav Petkov wrote:
> On Mon, Sep 23, 2019 at 08:17:40PM +0100, Hanna Hawa wrote:
>> +void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
>> +			int inst_nr, int block_nr, const char *msg)
>> +{
>> +	__edac_device_handle_ce(edac_dev, 1, inst_nr, block_nr, msg);
>> +}
>> +EXPORT_SYMBOL_GPL(edac_device_handle_ce);
> 
> Eww, I don't like that: exporting the function *and* the __ counterpart.
> The user will get confused and that is unnecessary.
> 
> See below for a better version. This way you solve the whole deal with a
> single patch.
I'm okay with this version, minor comment below.

> 
> ---
> From: Hanna Hawa <hhhawa@amazon.com>
> Date: Mon, 23 Sep 2019 20:17:40 +0100
> Subject: [PATCH] EDAC/device: Rework error logging API
> 
> Make the main workhorse the "count" functions which can log a @count
> of errors. Have the current APIs edac_device_handle_{ce,ue}() call
> the _count() variants and this way keep the exported symbols number
> unchanged.
> 
>   [ bp: Rewrite. ]
> 
> Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
> Signed-off-by: Borislav Petkov <bp@suse.de>
> Cc: benh@amazon.com
> Cc: dwmw@amazon.co.uk
> Cc: hanochu@amazon.com
> Cc: James Morse <james.morse@arm.com>
> Cc: jonnyc@amazon.com
> Cc: linux-edac <linux-edac@vger.kernel.org>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: ronenk@amazon.com
> Cc: talel@amazon.com
> Cc: Tony Luck <tony.luck@intel.com>
> Link: https://lkml.kernel.org/r/20190923191741.29322-2-hhhawa@amazon.com
> ---
>   drivers/edac/edac_device.c | 44 ++++++++++++++++---------------
>   drivers/edac/edac_device.h | 54 ++++++++++++++++++++++++++++++--------
>   2 files changed, 66 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
> index 65cf2b9355c4..d4d8bed5b55d 100644
> --- a/drivers/edac/edac_device.c
> +++ b/drivers/edac/edac_device.c
> @@ -555,8 +555,9 @@ static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info
>   	return edac_dev->panic_on_ue;
>   }
>   
> -void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
> -			int inst_nr, int block_nr, const char *msg)
> +void edac_device_handle_ce_count(struct edac_device_ctl_info *edac_dev,
> +				 unsigned int count, int inst_nr, int block_nr,
> +				 const char *msg)
>   {
>   	struct edac_device_instance *instance;
>   	struct edac_device_block *block = NULL;

Missing count check, same in *_ue_count():
if (count)
	return;

> @@ -582,23 +583,24 @@ void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
>   
>   	if (instance->nr_blocks > 0) {
>   		block = instance->blocks + block_nr;
> -		block->counters.ce_count++;
> +		block->counters.ce_count += count;
>   	}
>   
>   	/* Propagate the count up the 'totals' tree */
> -	instance->counters.ce_count++;
> -	edac_dev->counters.ce_count++;
> +	instance->counters.ce_count += count;
> +	edac_dev->counters.ce_count += count;
>   
>   	if (edac_device_get_log_ce(edac_dev))
>   		edac_device_printk(edac_dev, KERN_WARNING,
> -				"CE: %s instance: %s block: %s '%s'\n",
> -				edac_dev->ctl_name, instance->name,
> -				block ? block->name : "N/A", msg);
> +				   "CE: %s instance: %s block: %s count: %d '%s'\n",
> +				   edac_dev->ctl_name, instance->name,
> +				   block ? block->name : "N/A", count, msg);
>   }
> -EXPORT_SYMBOL_GPL(edac_device_handle_ce);
> +EXPORT_SYMBOL_GPL(edac_device_handle_ce_count);
>   
> -void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
> -			int inst_nr, int block_nr, const char *msg)
> +void edac_device_handle_ue_count(struct edac_device_ctl_info *edac_dev,
> +				 unsigned int count, int inst_nr, int block_nr,
> +				 const char *msg)
>   {
>   	struct edac_device_instance *instance;
>   	struct edac_device_block *block = NULL;
> @@ -624,22 +626,22 @@ void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
>   
>   	if (instance->nr_blocks > 0) {
>   		block = instance->blocks + block_nr;
> -		block->counters.ue_count++;
> +		block->counters.ue_count += count;
>   	}
>   
>   	/* Propagate the count up the 'totals' tree */
> -	instance->counters.ue_count++;
> -	edac_dev->counters.ue_count++;
> +	instance->counters.ue_count += count;
> +	edac_dev->counters.ue_count += count;
>   
>   	if (edac_device_get_log_ue(edac_dev))
>   		edac_device_printk(edac_dev, KERN_EMERG,
> -				"UE: %s instance: %s block: %s '%s'\n",
> -				edac_dev->ctl_name, instance->name,
> -				block ? block->name : "N/A", msg);
> +				   "UE: %s instance: %s block: %s count: %d '%s'\n",
> +				   edac_dev->ctl_name, instance->name,
> +				   block ? block->name : "N/A", count, msg);
>   
>   	if (edac_device_get_panic_on_ue(edac_dev))
> -		panic("EDAC %s: UE instance: %s block %s '%s'\n",
> -			edac_dev->ctl_name, instance->name,
> -			block ? block->name : "N/A", msg);
> +		panic("EDAC %s: UE instance: %s block %s count: %d '%s'\n",
> +		      edac_dev->ctl_name, instance->name,
> +		      block ? block->name : "N/A", count, msg);
>   }
> -EXPORT_SYMBOL_GPL(edac_device_handle_ue);
> +EXPORT_SYMBOL_GPL(edac_device_handle_ue_count);
> diff --git a/drivers/edac/edac_device.h b/drivers/edac/edac_device.h
> index 1aaba74ae411..c4c0e0bdce14 100644
> --- a/drivers/edac/edac_device.h
> +++ b/drivers/edac/edac_device.h
> @@ -286,27 +286,60 @@ extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev);
>   extern struct edac_device_ctl_info *edac_device_del_device(struct device *dev);
>   
>   /**
> - * edac_device_handle_ue():
> - *	perform a common output and handling of an 'edac_dev' UE event
> + * Log correctable errors.
>    *
>    * @edac_dev: pointer to struct &edac_device_ctl_info
> - * @inst_nr: number of the instance where the UE error happened
> - * @block_nr: number of the block where the UE error happened
> + * @inst_nr: number of the instance where the CE error happened
> + * @count: Number of errors to log.
> + * @block_nr: number of the block where the CE error happened
> + * @msg: message to be printed
> + */
> +void edac_device_handle_ce_count(struct edac_device_ctl_info *edac_dev,
> +				 unsigned int count, int inst_nr, int block_nr,
> +				 const char *msg);
> +
> +/**
> + * Log uncorrectable errors.
> + *
> + * @edac_dev: pointer to struct &edac_device_ctl_info
> + * @inst_nr: number of the instance where the CE error happened
> + * @count: Number of errors to log.
> + * @block_nr: number of the block where the CE 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);
> +void edac_device_handle_ue_count(struct edac_device_ctl_info *edac_dev,
> +				 unsigned int 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_device_handle_ce(): Log a single correctable error
>    *
>    * @edac_dev: pointer to struct &edac_device_ctl_info
>    * @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,
> -				int inst_nr, int block_nr, const char *msg);
> +static inline void
> +edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, int inst_nr,
> +		      int block_nr, const char *msg)
> +{
> +	edac_device_handle_ce_count(edac_dev, 1, inst_nr, block_nr, msg);
> +}
> +
> +/**
> + * edac_device_handle_ue(): Log a single uncorrectable error
> + *
> + * @edac_dev: pointer to struct &edac_device_ctl_info
> + * @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
> + */
> +static inline void
> +edac_device_handle_ue(struct edac_device_ctl_info *edac_dev, int inst_nr,
> +		      int block_nr, const char *msg)
> +{
> +	edac_device_handle_ue_count(edac_dev, 1, inst_nr, block_nr, msg);
> +}
>   
>   /**
>    * edac_device_alloc_index: Allocate a unique device index number
> @@ -316,5 +349,4 @@ extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
>    */
>   extern int edac_device_alloc_index(void);
>   extern const char *edac_layer_name[];
> -
>   #endif
> 

  parent reply	other threads:[~2019-10-02  9:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-23 19:17 [PATCH v4 0/2] Add an API for edac device, for mulriple errors Hanna Hawa
2019-09-23 19:17 ` [PATCH v4 1/2] edac: Add an API for edac device to report for multiple errors Hanna Hawa
2019-09-30 14:50   ` Borislav Petkov
2019-10-01  6:56     ` Robert Richter
2019-10-01  8:32       ` Borislav Petkov
2019-10-01  9:47         ` Robert Richter
2019-10-01 10:25           ` Borislav Petkov
2019-10-01 10:53             ` Robert Richter
2019-10-02  9:25     ` Hawa, Hanna [this message]
2019-10-04 16:57       ` [PATCH -v2] EDAC/device: Rework error logging API Borislav Petkov
2019-09-23 19:17 ` [PATCH v4 2/2] edac: move edac_device_handle_*() API functions to header Hanna Hawa
2019-09-24  6:33 ` [PATCH v4 0/2] Add an API for edac device, for mulriple errors Robert Richter

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=5263edad-e0c9-a05a-72d7-e69c59d78d8f@amazon.com \
    --to=hhhawa@amazon.com \
    --cc=benh@amazon.com \
    --cc=bp@alien8.de \
    --cc=dwmw@amazon.co.uk \
    --cc=hanochu@amazon.com \
    --cc=james.morse@arm.com \
    --cc=jonnyc@amazon.com \
    --cc=linux-edac@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mchehab@kernel.org \
    --cc=ronenk@amazon.com \
    --cc=rrichter@marvell.com \
    --cc=talel@amazon.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).