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authorChristoph Hellwig <hch@lst.de>2007-05-14 08:18:14 +0900
committerPaul Mundt <lethal@linux-sh.org>2007-05-21 14:32:10 +0900
commitfce692e7986f9689a8f414a74e58c4a6d35d5551 (patch)
treeadf6960df800115cce3053e903ce87c2cac9d8aa /arch/sh/mm/fault.c
parente868d61272caa648214046a096e5a6bfc068dc8c (diff)
downloadlinux-2.6.34-ux500-fce692e7986f9689a8f414a74e58c4a6d35d5551.tar.gz
sh: revert addition of page fault notifiers
Just at the time you added them on sh we're removing them from other architectures. As there's no user yet this patch just removes them completely. Once you actually have a kprobes patch it should follow the direct call to kprobes_fault_handler model that powerpc, s390 and sparc64 employ in 2.6.22-rc1 and that I'm updating other architectures to. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/fault.c')
-rw-r--r--arch/sh/mm/fault.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 62d02892103..c878faa4ae4 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -15,43 +15,11 @@
#include <linux/mm.h>
#include <linux/hardirq.h>
#include <linux/kprobes.h>
-#include <linux/kdebug.h>
#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
#include <asm/kgdb.h>
-#ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
-
-/* Hook to register for page fault notifications */
-int register_page_fault_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
-}
-
-int unregister_page_fault_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
-}
-
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
- int trap, int sig)
-{
- struct die_args args = {
- .regs = regs,
- .trapnr = trap,
- };
- return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
-}
-#else
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
- int trap, int sig)
-{
- return NOTIFY_DONE;
-}
-#endif
-
/*
* This routine handles page faults. It determines the address,
* and the problem, and then passes it off to one of the appropriate
@@ -69,11 +37,6 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
siginfo_t info;
trace_hardirqs_on();
-
- if (notify_page_fault(DIE_PAGE_FAULT, regs,
- writeaccess, SIGSEGV) == NOTIFY_STOP)
- return;
-
local_irq_enable();
#ifdef CONFIG_SH_KGDB