diff options
Diffstat (limited to 'arch/sh/mm/fault.c')
| -rw-r--r-- | arch/sh/mm/fault.c | 39 |
1 files changed, 1 insertions, 38 deletions
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 9207da67ff8..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(¬ify_page_fault_chain, nb); -} - -int unregister_page_fault_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_unregister(¬ify_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(¬ify_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 @@ -285,7 +248,7 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs, pte_t *pte; pte_t entry; struct mm_struct *mm = current->mm; - spinlock_t *ptl; + spinlock_t *ptl = NULL; int ret = 1; #ifdef CONFIG_SH_KGDB |