Re: [patch] generic-hardirqs-2.6.9-rc1-mm4.patch

[Russell King <rmk+lkml@arm.linux.org.uk>]

On Thu, Sep 09, 2004 at 07:54:41PM +0200, Arjan van de Ven wrote:
> 
> On Thu, Sep 09, 2004 at 10:53:14AM -0700, William Lee Irwin III wrote:
> > On Thu, Sep 09, 2004 at 07:24:01PM +0200, Ingo Molnar wrote:
> > > you can find a pretty good approximation done by Scott Wood (and Andrey
> > > Panin?) in the ppc/ppc64 portion of the VP patches:
> > >  http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-S0
> > > basically you only have to zap some of the irq-threading changes such as
> > > calls to redirect_hardirq(), do a s/generic_// and zap the PIC changes
> > > (these are done for redirection too). Scott has tested those changes so
> > > kernel/hardirq.c should work pretty well with ppc/ppc64.
> > 
> > By any chance can the generic code be made not to be reliant on
> > irq_desc[] and/or irq_desc[] being an array?
> 
> I would say one step at a time.
> First extract out the code that most arch's share already
> only THEN start working on seeing if the few remaining ones can be moved in,
> and if other cleanups are appropriate

If it uses irq_desc then ARM won't use it.  irq_desc is part of the
far-too-restrictive x86 IRQ handlign code which is unsuitable for
ARM platforms.

Sorry, try again.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 PCMCIA      - http://pcmcia.arm.linux.org.uk/
                 2.6 Serial core