From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [patch 31/37] mn10300: Use generic irq Kconfig
Date: Sat, 5 Mar 2011 23:01:27 +0100
Message-ID: <20110305220127.GA21728@merkur.ravnborg.org>
References: <20110119205258.462759212@linutronix.de> <20110119210840.381111598@linutronix.de> <AANLkTi=nLFx7Z7UfiXZrBQoGgC1Fh_dh9--5T=Di9qhc@mail.gmail.com>
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To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, LKML <linux-kernel@vger.kernel.org>, Linux-Arch <linux-arch@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Ingo Molnar <mingo@elte.hu>, David Howells <dhowells@redhat.com>

On Sat, Mar 05, 2011 at 10:02:33PM +0100, Geert Uytterhoeven wrote:
> On Wed, Jan 19, 2011 at 22:49, Thomas Gleixner <tglx@linutronix.de> w=
rote:
> > No functional change.
> >
> > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> > Cc: David Howells <dhowells@redhat.com>
> > ---
> > =A0arch/mn10300/Kconfig | =A0 =A05 +----
> > =A01 file changed, 1 insertion(+), 4 deletions(-)
> >
> > Index: linux-2.6/arch/mn10300/Kconfig
> > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> > --- linux-2.6.orig/arch/mn10300/Kconfig
> > +++ linux-2.6/arch/mn10300/Kconfig
> > @@ -1,6 +1,7 @@
> > =A0config MN10300
> > =A0 =A0 =A0 =A0def_bool y
> > =A0 =A0 =A0 =A0select HAVE_OPROFILE
> > + =A0 =A0 =A0 select GENERIC_HARDIRQS
>=20
> Wasn't this supposed to be "select HAVE_GENERIC_HARDIRQS"?
>=20
> /me studying generic hardirqs...

One could hope this was nicely documented in kernel/irq/Kconfig.
But that file contains only 9 lines of comments for 10 config symbols.

Maybe it is just me but I was struggeling understanding the purpose
of these config symbols.

I found the individual bits of genirq nicely documented in most cases.
But the overall picture was/is hard to get.

And I never got enough understanding to write up something myself :-(

	Sam