linux-kernel - Re: [patch 31/37] mn10300: Use generic irq Kconfig

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Message-ID: <20110305220127.GA21728@merkur.ravnborg.org>
Date:	Sat, 5 Mar 2011 23:01:27 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	David Howells <dhowells@...hat.com>
Subject: Re: [patch 31/37] mn10300: Use generic irq Kconfig

On Sat, Mar 05, 2011 at 10:02:33PM +0100, Geert Uytterhoeven wrote:
> On Wed, Jan 19, 2011 at 22:49, Thomas Gleixner <tglx@...utronix.de> wrote:
> > No functional change.
> >
> > Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> > Cc: David Howells <dhowells@...hat.com>
> > ---
> >  arch/mn10300/Kconfig |    5 +----
> >  1 file changed, 1 insertion(+), 4 deletions(-)
> >
> > Index: linux-2.6/arch/mn10300/Kconfig
> > ===================================================================
> > --- linux-2.6.orig/arch/mn10300/Kconfig
> > +++ linux-2.6/arch/mn10300/Kconfig
> > @@ -1,6 +1,7 @@
> >  config MN10300
> >        def_bool y
> >        select HAVE_OPROFILE
> > +       select GENERIC_HARDIRQS
> 
> Wasn't this supposed to be "select HAVE_GENERIC_HARDIRQS"?
> 
> /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
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