linux-kernel - Re: [PATCH] Remove "decl_subsys_name" macro and single usage of it.

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Date:	Thu, 15 Mar 2007 14:08:07 +0100
From:	Kay Sievers <kay.sievers@...y.org>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH] Remove "decl_subsys_name" macro and single usage of it.

On Thu, 2007-03-15 at 08:52 -0400, Robert P. J. Day wrote:
> On Thu, 15 Mar 2007, Kay Sievers wrote:
> 
> > On 3/1/07, Robert P. J. Day <rpjday@...dspring.com> wrote:
> > >
> > >   Remove the macro "decl_subsys_name" which can be used to declare a
> > > sysfs subsystem, along with the single invocation of it in the source
> > > tree, since there appears to be little value in creating a subsystem
> > > whose subsystem name differs from its structure name.  Everyone else
> > > just uses "decl_subsys".
> >
> > Sometimes you want shorter variable names as the created objects in
> > sysfs, because the 80 columns limit of the kernel source makes long
> > variable names pretty inconvenient.
> > And all these decl_* macros, obviously can't create any names that
> > contain '-', which is pretty annoying. There is also a user in the
> > experimental patches in Greg's tree. Please leave it there for now.
> 
> no problem but that patch *was* based on a suggestion by greg in the
> first place.  i'm guessing he just forgot. :-)

A cleanup of the driver-core source is long overdue, that's why we like
everything that goes away here, that isn't really needed. :)

In the end, we should probably just get rid of the whole "struct
subsystem". We can move the lock to the kset and ditch the whole weird
idea of a "subsystem", which is nothing but a collection of ksets, which
the object model can handle without "struct subsystem" just fine.

Thanks,
Kay

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