Re: [PATCH] PPC64 iSeries viodasd proc file

[Greg KH]

On Wed, Jun 23, 2004 at 08:38:10PM -0400, Jeff Garzik wrote:
> >But what you can use is the MODULE_DEVICE_TABLE() information in the
> >modules to try to help you out here.  That details a mapping of what
> >kind of devices that specific driver supports.
> 
> No, it details what devices a driver supports, not what _type_ of 
> devices the driver supports.

Yes, you are correct. 

> >>Note: this should not mean that we then go and remove currently
> >>existing stuff in /proc.  Deprecate it and then it can go away in time
> >>as people switch.  Having to have a flag day is very painful.  It's
> >>far easier to deprecate in one stable series with a new interface
> >>available and then start removing the old ones as things start to
> >>switch over.  If it really is an improvement, then getting people to
> >>change won't be difficult.
> >
> >
> >I agree, I don't think that many things have disappeared from /proc just
> >yet, right?  You should just have more information than what you
> >previously did, right?  Or did scsi drop their /proc support fully?
> 
> Concrete example:  modprobe sx8.  Now, what block devices did it detect?

Could we determine this in 2.4?

Anyway, how about this assuming sx8 is a pci driver:
	- look in /sys/bus/pci/drivers/sx8/
	- for every device listed in that directory do:
		- `tree | grep block` or however you want to search the
		  tree for the block symlink, find is probably nicer
		  here.
		- that gives you the base block device, then go into the
		  /sys/block/FOUND_BLOCK_DEVICE to find the individual
		  partitions if needed.

Or work backwards if you want to:
	- tally up every /sys/block/*/device symlink, and see if they
	  point to a device owned by the sx8 driver.

Does that work for you?

thanks,

greg k-h
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