[PATCH] x86: simplify notify_page_fault()

Remove all parameters from this function that aren't really variable.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
Signed-off-by: NAndi Kleen <ak@suse.de>

arch/i386/mm/fault.c

@@ -46,17 +46,17 @@ int unregister_page_fault_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
 
-static inline int notify_page_fault(enum die_val val, const char *str,
-			struct pt_regs *regs, long err, int trap, int sig)
+static inline int notify_page_fault(struct pt_regs *regs, long err)
 {
 	struct die_args args = {
 		.regs = regs,
-		.str = str,
+		.str = "page fault",
 		.err = err,
-		.trapnr = trap,
-		.signr = sig
+		.trapnr = 14,
+		.signr = SIGSEGV
 	};
-	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+	return atomic_notifier_call_chain(&notify_page_fault_chain,
+	                                  DIE_PAGE_FAULT, &args);
 }
 
 /*
@@ -327,8 +327,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
 	if (unlikely(address >= TASK_SIZE)) {
 		if (!(error_code & 0x0000000d) && vmalloc_fault(address) >= 0)
 			return;
-		if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-						SIGSEGV) == NOTIFY_STOP)
+		if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
 			return;
 		/*
 		 * Don't take the mm semaphore here. If we fixup a prefetch
@@ -337,8 +336,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
 		goto bad_area_nosemaphore;
 	}
 
-	if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-					SIGSEGV) == NOTIFY_STOP)
+	if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
 		return;
 
 	/* It's safe to allow irq's after cr2 has been saved and the vmalloc

arch/x86_64/mm/fault.c

@@ -56,17 +56,17 @@ int unregister_page_fault_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
 
-static inline int notify_page_fault(enum die_val val, const char *str,
-			struct pt_regs *regs, long err, int trap, int sig)
+static inline int notify_page_fault(struct pt_regs *regs, long err)
 {
 	struct die_args args = {
 		.regs = regs,
-		.str = str,
+		.str = "page fault",
 		.err = err,
-		.trapnr = trap,
-		.signr = sig
+		.trapnr = 14,
+		.signr = SIGSEGV
 	};
-	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+	return atomic_notifier_call_chain(&notify_page_fault_chain,
+	                                  DIE_PAGE_FAULT, &args);
 }
 
 /* Sometimes the CPU reports invalid exceptions on prefetch.
@@ -355,8 +355,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
 			if (vmalloc_fault(address) >= 0)
 				return;
 		}
-		if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-						SIGSEGV) == NOTIFY_STOP)
+		if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
 			return;
 		/*
 		 * Don't take the mm semaphore here. If we fixup a prefetch
@@ -365,8 +364,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
 		goto bad_area_nosemaphore;
 	}
 
-	if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-					SIGSEGV) == NOTIFY_STOP)
+	if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
 		return;
 
 	if (likely(regs->eflags & X86_EFLAGS_IF))