SKylake Edac support in linux 2.6.32.696 kernel build

SKylake Edac support in linux 2.6.32.696 kernel build

[Nitin Gupta]

Hi All

I  started back porting  Skylake Edac driver from 4.8 kernel to 2.6.696
kernel
i am not getting the memory controller entries inside
/sys/devices/system/edac/

i am able to get the entries inside

/sys/bus/edac/devices/mc/
/sys/devices/mc/

Any help will be appreciated .

Regards
Nitin
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SKylake Edac support in linux 2.6.32.696 kernel build

[Nitin Gupta]

There are below link also found


./sys/devices/mc/mc0
./sys/bus/mc0
./sys/bus/mc0/devices/mc0

On Fri, Aug 31, 2018 at 4:46 PM, Nitin Gupta <nitin.gupta981 at gmail.com>
wrote:

> Hi All
>
> I  started back porting  Skylake Edac driver from 4.8 kernel to 2.6.696
> kernel
> i am not getting the memory controller entries inside
> /sys/devices/system/edac/
>
> i am able to get the entries inside
>
> /sys/bus/edac/devices/mc/
> /sys/devices/mc/
>
> Any help will be appreciated .
>
> Regards
> Nitin
>
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SKylake Edac support in linux 2.6.32.696 kernel build

[Greg Kroah-Hartman]

On Fri, Aug 31, 2018@04:46:41PM +0530, Nitin Gupta wrote:
> Hi All
> 
> I  started back porting  Skylake Edac driver from 4.8 kernel to 2.6.696
> kernel

Ick, why would you ever want to do that?  Just use a newer kernel
please.  If you really want to do this, you are on your own.

good luck!

greg k-h

SKylake Edac support in linux 2.6.32.696 kernel build

[Nitin Gupta]

Hi Greg

Thanks for your comments  but somehow i cant use the latest kernel .
i am able to compile skx_edac.c to the kernel .but if some body can tell
how controller directory will be getting added will be good.

Some more output from the kernel

 cd /sys/devices/system/edac/

 ls -la
total 0
drwxr-xr-x 3 admin root 0 Aug 30 19:53 .
drwxr-xr-x 14 admin root 0 Aug 30 19:53 ..
drwxr-xr-x 2 admin root 0 Aug 30 19:53 power
rw-rr- 1 admin root 4096 Aug 30 20:00 uevent

cd /sys/bus/edac
 ls -la
total 0
drwxr-xr-x 4 admin root 0 Aug 30 19:53 .
drwxr-xr-x 21 admin root 0 Aug 30 19:57 ..
drwxr-xr-x 2 admin root 0 Aug 30 19:53 devices
drwxr-xr-x 2 admin root 0 Aug 30 19:53 drivers
rw-rr- 1 admin root 4096 Aug 30 19:59 drivers_autoprobe
-w------ 1 admin root 4096 Aug 30 19:59 drivers_probe
-w------ 1 admin root 4096 Aug 30 19:53 uevent



cd /sys/bus/edac/devices/mc/
 ls -la
total 0
drwxr-xr-x 7 admin root 0 Aug 30 19:53 .
drwxr-xr-x 21 admin root 0 Aug 30 19:53 ..
drwxr-xr-x 3 admin root 0 Aug 30 19:53 mc0
drwxr-xr-x 3 admin root 0 Aug 30 19:53 mc1
drwxr-xr-x 3 admin root 0 Aug 30 19:53 mc2
drwxr-xr-x 3 admin root 0 Aug 30 19:53 mc3
drwxr-xr-x 2 admin root 0 Aug 30 19:53 power
lrwxrwxrwx 1 admin root 0 Aug 30 19:59 subsystem -> ../../bus/edac
rw-rr- 1 admin root 4096 Aug 30 19:53 uevent

   - <https://jira.rvbdtechlabs.net/secure/AddComment!default.jspa?id=95528>




Regards
Nitin

On Fri, Aug 31, 2018 at 9:44 PM, Greg Kroah-Hartman <
gregkh@linuxfoundation.org> wrote:

> On Fri, Aug 31, 2018@04:46:41PM +0530, Nitin Gupta wrote:
> > Hi All
> >
> > I  started back porting  Skylake Edac driver from 4.8 kernel to 2.6.696
> > kernel
>
> Ick, why would you ever want to do that?  Just use a newer kernel
> please.  If you really want to do this, you are on your own.
>
> good luck!
>
> greg k-h
>
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SKylake Edac support in linux 2.6.32.696 kernel build

[Greg Kroah-Hartman]

On Fri, Aug 31, 2018@11:22:06PM +0530, Nitin Gupta wrote:
> Hi Greg
> 
> Thanks for your comments  but somehow i cant use the latest kernel .

Why not?  What is not working properly for you?  It will be easier to
fix that than to work with a crazy half-backported mess that you will be
the sole person responsible for.

thanks,

greg k-h

SKylake Edac support in linux 2.6.32.696 kernel build

[Nitin Gupta]

Hi Greg

i am working on some project which is having huge changes and working
on kernel-2.6.32-131.696
 it will be very difficult to back port them into 4.8 .

Regards
Nitin

On Sat, Sep 1, 2018 at 1:17 AM, Greg Kroah-Hartman <
gregkh@linuxfoundation.org> wrote:

> On Fri, Aug 31, 2018@11:22:06PM +0530, Nitin Gupta wrote:
> > Hi Greg
> >
> > Thanks for your comments  but somehow i cant use the latest kernel .
>
> Why not?  What is not working properly for you?  It will be easier to
> fix that than to work with a crazy half-backported mess that you will be
> the sole person responsible for.
>
> thanks,
>
> greg k-h
>
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SKylake Edac support in linux 2.6.32.696 kernel build

[Greg Kroah-Hartman]

On Sun, Sep 02, 2018@03:45:01PM +0530, Nitin Gupta wrote:
> Hi Greg
> 
> i am working on some project which is having huge changes and working
> on kernel-2.6.32-131.696
>  it will be very difficult to back port them into 4.8 .

Why 4.8?  That too is a totally unsupported kernel version.

Anyway, randomly pulling in a driver from a newer by many years, if not
almost a decade old (2.6.32 was released in 2009), is a very difficult
task, and usually almost impossible to go that far back.  That is not
how Linux is developed or meant to be worked with at all.

You are _really_ on your own here, only do this if you _really_ know
what you are doing.  Even then, I would not recommend you do this, as
you are guaranteeing to create a monstrosity that only you can support,
for forever, on your own.

good luck!

greg k-h

SKylake Edac support in linux 2.6.32.696 kernel build

[Nitin Gupta]

Hi Greg

found that  Skylake driver for EDAC is supported on 4.8 .

Regards
Nitin

On Sun, Sep 2, 2018 at 8:32 PM, Greg Kroah-Hartman <
gregkh@linuxfoundation.org> wrote:

> On Sun, Sep 02, 2018@03:45:01PM +0530, Nitin Gupta wrote:
> > Hi Greg
> >
> > i am working on some project which is having huge changes and working
> > on kernel-2.6.32-131.696
> >  it will be very difficult to back port them into 4.8 .
>
> Why 4.8?  That too is a totally unsupported kernel version.
>
> Anyway, randomly pulling in a driver from a newer by many years, if not
> almost a decade old (2.6.32 was released in 2009), is a very difficult
> task, and usually almost impossible to go that far back.  That is not
> how Linux is developed or meant to be worked with at all.
>
> You are _really_ on your own here, only do this if you _really_ know
> what you are doing.  Even then, I would not recommend you do this, as
> you are guaranteeing to create a monstrosity that only you can support,
> for forever, on your own.
>
> good luck!
>
> greg k-h
>
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