lkml.org 
[lkml]   [2012]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2] edac: add support for Calxeda highbank memory controller
Em 07-06-2012 22:12, Rob Herring escreveu:
> Mauro,
>
> On 06/06/2012 05:34 PM, Mauro Carvalho Chehab wrote:
>> Hi Rob,
>>
>> Em 06-06-2012 19:02, Rob Herring escreveu:
>>> From: Rob Herring <rob.herring@calxeda.com>
>>>
>>> Add support for memory controller on Calxeda Highbank platforms. Highbank
>>> platforms support a single 4GB mini-DIMM with 1-bit correction and 2-bit
>>> detection.
>>>
>>> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
>>> ---
>>> .../devicetree/bindings/arm/calxeda/mem-ctrlr.txt | 17 ++
>>> arch/arm/boot/dts/highbank.dts | 6 +
>>> drivers/edac/Kconfig | 9 +-
>>> drivers/edac/Makefile | 2 +
>>> drivers/edac/highbank_mc_edac.c | 238 ++++++++++++++++++++
>>> 5 files changed, 271 insertions(+), 1 deletion(-)
>>> create mode 100644 Documentation/devicetree/bindings/arm/calxeda/mem-ctrlr.txt
>>> create mode 100644 drivers/edac/highbank_mc_edac.c
>
> [snip]
>
>>> +
>>> +static struct mcidev_sysfs_attribute highbank_mc_sysfs_attributes[] = {
>>> + {
>>> + .attr = {
>>> + .name = "inject_ctrl",
>>> + .mode = (S_IRUGO | S_IWUSR)
>>> + },
>>> + .store = highbank_mc_inject_ctrl_store,
>>> + },
>>> + {
>>> + .attr = {.name = NULL} /* End of list */
>>> + }
>>> +};
>>
>> This won't work after the kobj->struct device conversion patches that are at
>> -next tree, as this struct will not exist anymore.
>>
>> Also, as this is for error injection, the better is to use debugfs.
>>
>> It shouldn't be hard to change it to use debugfs. If you want an example, you
>> can take a look on this patch:
>>
>> http://git.kernel.org/?p=linux/kernel/git/mchehab/linux-edac.git;a=commitdiff;h=303f3e2113d81d49feef9c0803c2958d41513f14
>>
>
> I've got this working, but don't really like the resulting debugfs
> layout. I end-up with something like this (using dev_name() of platform
> driver):
>
> /mc0/fake*
> /fff00000.memory-controller/inject_ctrl

Yeah, that looks weird.
>
> It would be nice if there was a top level edac directory and any entries
> I add are added under mcX. I can do that for the next version if that's
> okay.

Yeah, that sounds the right thing to do, e. g. having the error injection
code under <debugfs>/edac/mc[0-9]+/.

Regards,
Mauro.
>
> Rob
>




\
 
 \ /
  Last update: 2012-06-11 18:21    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site