linux-kernel - [PATCH, RAW] IRQ: Maintain irq number globally rather than passing to IRQ handlers

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Date:	Fri, 06 Oct 2006 11:18:04 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	David Howells <dhowells@...hat.com>, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
CC:	Ingo Molnar <mingo@...e.hu>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andrew Morton <akpm@...l.org>,
	Thomas Gleixner <tglx@...utronix.de>, torvalds@...l.org,
	Dmitry Torokhov <dtor@...l.ru>, Greg KH <greg@...ah.com>,
	David Brownell <david-b@...bell.net>,
	Alan Stern <stern@...land.harvard.edu>
Subject: [PATCH, RAW] IRQ: Maintain irq number globally rather than passing
 to IRQ handlers

Here is the raw, un-split-up first pass of the irq argument removal 
patch (500K):	http://gtf.org/garzik/misc/patch.irq-remove

Notes:

* raw first pass, DO NOT APPLY.

* this was useful work:  it turned up several minor bugs

* Do we mark irq handlers FASTCALL?  If not, we probably can now.

* I also turned up a few obvious places that dhowells missed in his 
pt_regs patch, inevitably in non-x86 arches that probably were not built.

* I need to fix up ~10 or so drivers that called their interrupt 
handlers directly, then used a 'irq == 0' test to determine whether the 
interrupt handler was called internally, or by the system.

* not sure yet if I want to mark the parport "irq handler" functions as 
truly irqreturn_t

* Hopefully I will have this polished by the end of the day.

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