genirq: Add a new generic IPI reservation code to irq core

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Add a generic mechanism to dynamically allocate an IPI. Depending on the
underlying implementation this creates either a single Linux irq or a
consective range of Linux irqs. The Linux irq is used later to send IPIs to
other CPUs.

[ tglx: Massaged the code and removed the 'consecutive mask' restriction for
  	the single IRQ case ]

Signed-off-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: <jason@lakedaemon.net>
Cc: <marc.zyngier@arm.com>
Cc: <jiang.liu@linux.intel.com>
Cc: <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>
Cc: <lisa.parratt@imgtec.com>
Cc: Qais Yousef <qsyousef@gmail.com>
Link: http://lkml.kernel.org/r/1449580830-23652-9-git-send-email-qais.yousef@imgtec.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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This commit is contained in:

Qais Yousef 2015-12-08 13:20:19 +00:00 • committed by Thomas Gleixner

parent ac0a0cd266

commit d17bf24e69

4 changed files with 146 additions and 0 deletions

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3

include/linux/irq.h

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5

include/linux/irqdomain.h

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1

kernel/irq/Makefile

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137

kernel/irq/ipi.c

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