Re: [PATCH 30/47] Driver core: create devices/virtual/ tree

Dmitry Torokhov
2006-09-26T13:51:12Z

On 9/26/06, Greg KH <greg@kroah.com> wrote:
> On Tue, Sep 26, 2006 at 09:24:15AM -0400, Dmitry Torokhov wrote:
> > On 9/26/06, Greg KH <greg@kroah.com> wrote:
> > >From: Greg Kroah-Hartman <gregkh@suse.de>
> > >
> > >This change creates a devices/virtual/CLASS_NAME tree for struct devices
> > >that belong to a class, yet do not have a "real" struct device for a
> > >parent. It automatically creates the directories on the fly as needed.
> > >
> >
> > Why do you need multiple virtual devices? All parentless class devices
> > could grow from a single virtual device.
>
> They could, but it's a mess of a single directory if you do that.
> Having /sys/devices/virtual/tty/ as a place for all tty virtual device
> is nicer than /sys/devices/virtual/ as a single place for all of them
> (mem, network, tty, misc, etc.)
>

You supposed to use classes for classification, and devices to
represent the tree so that would be /sys/class/tty/...

--
Dmitry