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[AVR32] optimize pagefault path

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Avoid the costly notifier list in the pagefault path and call
the kprobes code directly.  The same change went into the 2.6.22
cycle for powerpc, 2s390 and sparc64 already.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
Christoph Hellwig
2007-05-12 17:56:11 +02:00
committed by Haavard Skinnemoen
parent 5d1938c83c
commit 9caebec7b8
4 changed files with 27 additions and 34 deletions
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17
include/asm-avr32/kdebug.h
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@@ -5,13 +5,22 @@
/* Grossly misnamed. */
enum die_val {
DIE_FAULT,
DIE_BREAKPOINT,
DIE_SSTEP,
DIE_PAGE_FAULT,
};
int register_page_fault_notifier(struct notifier_block *nb);
int unregister_page_fault_notifier(struct notifier_block *nb);
/*
* These are only here because kprobes.c wants them to implement a
* blatant layering violation. Will hopefully go away soon once all
* architectures are updated.
*/
static inline int register_page_fault_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int unregister_page_fault_notifier(struct notifier_block *nb)
{
return 0;
}
#endif /* __ASM_AVR32_KDEBUG_H */