genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier
authorIan Campbell <ian.campbell@citrix.com>
Mon, 3 Oct 2011 14:37:00 +0000 (15:37 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 11 Nov 2011 17:43:13 +0000 (09:43 -0800)
commitcce574ff161d0f5e4263ed28a4a3785220802922
tree246275f4b0f8fb379114880a0be9b7af3f1e6ba3
parent734c81f73201c96a4669793c27f363a334770d79
genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier

commit 9bab0b7fbaceec47d32db51cd9e59c82fb071f5a upstream.

This adds a mechanism to resume selected IRQs during syscore_resume
instead of dpm_resume_noirq.

Under Xen we need to resume IRQs associated with IPIs early enough
that the resched IPI is unmasked and we can therefore schedule
ourselves out of the stop_machine where the suspend/resume takes
place.

This issue was introduced by 676dc3cf5bc3 "xen: Use IRQF_FORCE_RESUME".

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: http://lkml.kernel.org/r/1318713254.11016.52.camel@dagon.hellion.org.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/xen/events.c
include/linux/interrupt.h
kernel/irq/pm.c