Moving from /proc/acpi to /sys

Moving from /proc/acpi to /sys

[Keshavamurthy, Anil S]

Hi,
	I am curious to know whether anybody is working or even planning
to port 
all the acpi related entries from /proc/acpi to the corresponding
/sysfs entries. 


Thanks,

-Anil Keshavamurthy
Sr. Software Engineer
Linux OS Technology Team
Intel Corp.
(w) 503-712-4476


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Re: Moving from /proc/acpi to /sys

[Matthew Wilcox]

On Fri, Jun 18, 2004 at 10:41:17AM -0700, Keshavamurthy, Anil S wrote:
> Hi,
> 	I am curious to know whether anybody is working or even planning
> to port 
> all the acpi related entries from /proc/acpi to the corresponding
> /sysfs entries. 

Alex Williamson had a patch to fill in the methods under /sys ...

-- 
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Re: Moving from /proc/acpi to /sys

[Keshavamurthy Anil S]

On Fri, Jun 18, 2004 at 08:43:36PM +0100, Matthew Wilcox wrote:
> On Fri, Jun 18, 2004 at 10:41:17AM -0700, Keshavamurthy, Anil S wrote:
> > Hi,
> > 	I am curious to know whether anybody is working or even planning
> > to port 
> > all the acpi related entries from /proc/acpi to the corresponding
> > /sysfs entries. 
> 
> Alex Williamson had a patch to fill in the methods under /sys ...
Hi Alex,
	I am working on to support ACPI based cpu hotplug where in I am
in the process of modifying ACPI processor driver. Since with the hotplug
support I see some of the entries for the processor under /sys/device/system/cpu
and some under /proc/acpi/processor. I felt it would be good if we have everything
under the /sys fs directory. I would be glad to contribute to your patch for the
processor driver changes. Can you please let me know where you are on this patch and
and what are the things you are considering to move and lastly what is the timeline 
you are looking to push this patch.

thanks,
Anil


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Re: Moving from /proc/acpi to /sys

[Alex Williamson]

On Fri, 2004-06-18 at 13:56, Keshavamurthy Anil S wrote:
> On Fri, Jun 18, 2004 at 08:43:36PM +0100, Matthew Wilcox wrote:
> > On Fri, Jun 18, 2004 at 10:41:17AM -0700, Keshavamurthy, Anil S wrote:
> > > Hi,
> > > 	I am curious to know whether anybody is working or even planning
> > > to port 
> > > all the acpi related entries from /proc/acpi to the corresponding
> > > /sysfs entries. 
> > 
> > Alex Williamson had a patch to fill in the methods under /sys ...
> Hi Alex,
> 	I am working on to support ACPI based cpu hotplug where in I am
> in the process of modifying ACPI processor driver. Since with the hotplug
> support I see some of the entries for the processor under /sys/device/system/cpu
> and some under /proc/acpi/processor. I felt it would be good if we have everything
> under the /sys fs directory. I would be glad to contribute to your patch for the
> processor driver changes. Can you please let me know where you are on this patch and
> and what are the things you are considering to move and lastly what is the timeline 
> you are looking to push this patch.
> 
> thanks,
> Anil
> 

Anil,

   The patch I'm working on isn't meant as a replacement to the current
/proc/acpi entries.  It's meant more as a means for userspace to
directly interact w/ ACPI namespace.  Here's a link to the last thread
about the patch:

http://marc.theaimsgroup.com/?l=acpi4linux&m=108154985013230&w=2

It fills in files in /sys/firmware/acpi/namespace/ACPI such that methods
and objects can be evaluated using a simple read/write interface.  In
some cases, a set of libraries and daemon could achieve the same results
as the current /proc/acpi drivers, but I don't think this is necessarily
the way to go in all cases.

  Are there ACPI specific features under /proc/acpi/processor that you
need for cpu hotplug?  I would assume that you'd want to abstract the
implementation and have generic calls under /sys/device/system/cpu. 
Anyway, have a look at what my patch does and let me know if it's useful
to you.  I don't think it's the port of /proc/acpi that you're thinking
it might be, but I'm happy to take suggestions.  I plan to pick it up
again soon, but pushing the patch really depends on getting some
interest in it.  Thanks,

	Alex



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