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Re: irq.c

Subject: Re: irq.c
From: Pete Popov <>
Date: Fri, 09 Feb 2001 11:07:58 -0800
Cc: "" <>
Organization: Monta Vista Software
References: <> <>
Justin Carlson wrote:
> On Fri, 09 Feb 2001, Pete Popov wrote:
> > There's a dozen copies of "irq.c", and a few more files that do the same
> > thing but are named differently. The irq.c in arch/mips/kernel doesn't
> > seem to be used by any system.  The PowerPC also has lots of variants
> > also, but I believe they have a single irq.c file that all systems use.
> > So I guess my question is, is anyone using arch/mips/kernel/irq.c, and
> > does everyone plan on moving to that file (which seems like the right
> > thing to do).
> >
> I've noticed that arch/i386/kernel/irq.c has this note on it:
> /*
>  * (mostly architecture independent, will move to kernel/irq.c in 2.5.)
>  *
>  * IRQs are in fact implemented a bit like signal handlers for the kernel.
>  * Naturally it's not a 1:1 relation, but there are similarities.
>  */
> My internal code uses this as a template, in anticipation of this move;
> assuming this will happen in 2.5, does it make sense to do an intermediate 
> move
> to a common mips/kernel/irq.c?
> If it does, I'd like to see mips/kernel/irq.c updated to more closely match 
> the
> i386 version, but I'm curious what other people think.

Thanks for pointing that out.  If all architectures will move to
kernel/irq.c, then it probably makes sense to wait.  At first glance,
mips/kernel/irq.c seems pretty close to i386/kernel/irq.c -- certainly a
lot closer than many of the other copies.  


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