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parisc: convert to asm-generic/hardirq.h
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
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Christoph Hellwig
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Kyle McMartin
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Sep 28, 2009
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/* hardirq.h: PA-RISC hard IRQ support. | ||
* | ||
* Copyright (C) 2001 Matthew Wilcox <matthew@wil.cx> | ||
* | ||
* The locking is really quite interesting. There's a cpu-local | ||
* count of how many interrupts are being handled, and a global | ||
* lock. An interrupt can only be serviced if the global lock | ||
* is free. You can't be sure no more interrupts are being | ||
* serviced until you've acquired the lock and then checked | ||
* all the per-cpu interrupt counts are all zero. It's a specialised | ||
* br_lock, and that's exactly how Sparc does it. We don't because | ||
* it's more locking for us. This way is lock-free in the interrupt path. | ||
*/ | ||
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#ifndef _PARISC_HARDIRQ_H | ||
#define _PARISC_HARDIRQ_H | ||
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#include <linux/threads.h> | ||
#include <linux/irq.h> | ||
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typedef struct { | ||
unsigned long __softirq_pending; /* set_bit is used on this */ | ||
} ____cacheline_aligned irq_cpustat_t; | ||
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#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ | ||
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void ack_bad_irq(unsigned int irq); | ||
#include <asm-generic/hardirq.h> | ||
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#endif /* _PARISC_HARDIRQ_H */ |
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