linux-kernel - Re: [PATCH 9/19] TuxOnIce: Netlink support.

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Date:	Thu, 7 May 2009 06:34:29 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Nigel Cunningham <nigel@...onice.net>
Cc:	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	tuxonice-devel@...ts.tuxonice.net
Subject: Re: [PATCH 9/19] TuxOnIce: Netlink support.

On Thu, May 07, 2009 at 07:35:38AM +1000, Nigel Cunningham wrote:
> Hi Sam.
> 
> On Wed, 2009-05-06 at 23:03 +0200, Sam Ravnborg wrote:
> > On Thu, May 07, 2009 at 12:39:05AM +1000, Nigel Cunningham wrote:
> > > This patch adds support for communicating with a userspace helper via a
> > > netlink socket. It is used by the userspace user interface support and
> > > by the storage manager support.
> > > 
> > > Signed-off-by: Nigel Cunningham <nigel@...onice.net>
> > > ---
> > >  kernel/power/Makefile           |    4 +
> > >  kernel/power/tuxonice_netlink.c |  339 +++++++++++++++++++++++++++++++++++++++
> > >  2 files changed, 343 insertions(+), 0 deletions(-)
> > >  create mode 100644 kernel/power/tuxonice_netlink.c
> > > 
> > > diff --git a/kernel/power/Makefile b/kernel/power/Makefile
> > > index 07efc8a..180b89a 100644
> > > --- a/kernel/power/Makefile
> > > +++ b/kernel/power/Makefile
> > > @@ -10,6 +10,10 @@ tuxonice_core-objs := tuxonice_modules.o tuxonice_sysfs.o tuxonice_highlevel.o \
> > >  
> > >  obj-$(CONFIG_TOI)		+= tuxonice_builtin.o
> > >  
> > > +ifdef CONFIG_NET
> > > +tuxonice_core-objs		+= tuxonice_netlink.o
> > > +endif
> > 
> > If you replace tuxonice_core-objs with tuxonice_core-y in your MAkefile the
> > above can be simplified to:
> > tuxonice_core-$(CONFIG_NET) += tuxonice_netlink.o
> > 
> > (On the assumption that CONFIG_NET is a bool)
> 
> Thanks for the review.
> 
> I have support for building tuxonice as modules that I'm not asking to
> be merged (at least not yet - it adds too many symbol exports at the
> moment). As a result, I did the simplification but left the
> tuxonice_core_objs definition. Is that what you'd do?

tuxonice_core-objs and tuxonice_core-y ahve equal semantics.
kbuild will recognize all .o files specified using tuxonice_core-y
as modules to be part of the tuxonice_core module.
So there is no need to define tuxonice_core-objs - that can
be replaced by tuxonice_core-y.

	Sam
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