linux/kernel/irq
Bernhard Walle d85a60d85e Add IRQF_IRQPOLL flag (common code)
irqpoll is broken on some architectures that don't use the IRQ 0 for the timer
interrupt like IA64.  This patch adds a IRQF_IRQPOLL flag.

Each architecture is handled in a separate pach.  As I left the irq == 0 as
condition, this should not break existing architectures that use timer_irq ==
0 and that I did't address with that patch (because I don't know).

This patch:

This patch adds a IRQF_IRQPOLL flag that the interrupt registration code could
use for the interrupt it wants to use for IRQ polling.

Because this must not be the timer interrupt, an additional flag was added
instead of re-using the IRQF_TIMER constant.  Until all architectures will
have an IRQF_IRQPOLL interrupt, irq == 0 will stay as alternative as it should
not break anything.

Also, note_interrupt() is called on CPU-specific interrupts to be used as
interrupt source for IRQ polling.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Grant Grundler <grundler@google.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00
..
autoprobe.c [PATCH] genirq: add handle_bad_irq() 2006-06-29 10:26:24 -07:00
chip.c MSI: arch must connect the irq and the msi_desc 2007-05-02 19:02:38 -07:00
devres.c [PATCH] irq-devres: fix failure path of devm_request_irq() 2007-04-07 10:05:21 -07:00
handle.c Add IRQF_IRQPOLL flag (common code) 2007-05-08 11:15:22 -07:00
internals.h [PATCH] genirq: more verbose debugging on unexpected IRQ vectors 2006-06-29 10:26:25 -07:00
Makefile [PATCH] sort the devres mess out 2007-02-11 11:18:07 -08:00
manage.c IRQ: check for PERCPU flag only when adding first irqaction 2007-05-08 11:15:06 -07:00
migration.c [PATCH] genirq: Mask irqs when migrating them. 2007-02-26 10:34:08 -08:00
proc.c kernel/irq/proc.c: unprotected iteration over the IRQ action list in name_unique() 2007-05-08 11:15:05 -07:00
resend.c [PATCH] ixp4xxdefconfig arm fixes 2006-10-06 12:11:08 -07:00
spurious.c Add IRQF_IRQPOLL flag (common code) 2007-05-08 11:15:22 -07:00