genirq: Add preflow handler support

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sparc64 needs to call a preflow handler on certain interrupts befor
calling the action chain. Integrate it into handle_fasteoi_irq. Must
be enabled via CONFIG_IRQ_FASTEOI_PREFLOW. No impact when disabled.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Thomas Gleixner 2011-02-10 15:14:20 +01:00

parent 3836ca08aa

commit 781295762d

4 changed files with 30 additions and 1 deletions

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3

include/linux/irq.h

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14

include/linux/irqdesc.h

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3

kernel/irq/Kconfig

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11

kernel/irq/chip.c

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