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x86: explicit call to mmiotrace in do_page_fault()

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The custom page fault handler list is replaced with a single function
pointer. All related functions and variables are renamed for
mmiotrace.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: pq@iki.fi
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Pekka Paalanen
2008-05-12 21:20:57 +02:00
committed by Thomas Gleixner
parent 63ffa3e456
commit 10c43d2eb5
4 changed files with 52 additions and 54 deletions
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14
arch/x86/Kconfig.debug
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@ -168,20 +168,18 @@ config IOMMU_LEAK
Add a simple leak tracer to the IOMMU code. This is useful when you
are debugging a buggy device driver that leaks IOMMU mappings.
config PAGE_FAULT_HANDLERS
bool "Custom page fault handlers"
depends on DEBUG_KERNEL
help
Allow the use of custom page fault handlers. A kernel module may
register a function that is called on every page fault. Custom
handlers are used by some debugging and reverse engineering tools.
config MMIOTRACE_HOOKS
bool
default n
config MMIOTRACE
tristate "Memory mapped IO tracing"
depends on DEBUG_KERNEL && PAGE_FAULT_HANDLERS && RELAY && DEBUG_FS
depends on DEBUG_KERNEL && RELAY && DEBUG_FS
select MMIOTRACE_HOOKS
default n
help
This will build a kernel module called mmiotrace.
Making this a built-in is heavily discouraged.
Mmiotrace traces Memory Mapped I/O access and is meant for debugging
and reverse engineering. The kernel module offers wrapped