---

yaml --- r: 30227 b: refs/heads/master c: d98f8f0 h: refs/heads/master i: 30225: 62bdfff 30223: e09abf5 v: v3
git-mirror · Jun 26, 2006 · 2be938f · 2be938f
1 parent 985c882
commit 2be938f
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Showing 3 changed files with 38 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4f9e87c0454059e80f3811f95ad9f40ed28c69a2
+refs/heads/master: d98f8f05188b45168db43df8ddc9feeb0b1cd512
diff --git a/trunk/arch/sparc64/mm/fault.c b/trunk/arch/sparc64/mm/fault.c
@@ -31,6 +31,40 @@
 #include <asm/kdebug.h>
 #include <asm/mmu_context.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, const char *str,
+			struct pt_regs *regs, long err, int trap, int sig)
+{
+	struct die_args args = {
+		.regs = regs,
+		.str = str,
+		.err = err,
+		.trapnr = trap,
+		.signr = sig
+	};
+	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+}
+#else
+static inline int notify_page_fault(enum die_val val, const char *str,
+			struct pt_regs *regs, long err, int trap, int sig)
+{
+	return NOTIFY_DONE;
+}
+#endif
+
 /*
  * To debug kernel to catch accesses to certain virtual/physical addresses.
  * Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints.
@@ -263,7 +297,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
 
 	fault_code = get_thread_fault_code();
 
-	if (notify_die(DIE_PAGE_FAULT, "page_fault", regs,
+	if (notify_page_fault(DIE_PAGE_FAULT, "page_fault", regs,
 		       fault_code, 0, SIGSEGV) == NOTIFY_STOP)
 		return;
 

diff --git a/trunk/include/asm-sparc64/kdebug.h b/trunk/include/asm-sparc64/kdebug.h
@@ -17,6 +17,8 @@ struct die_args {
 
 extern int register_die_notifier(struct notifier_block *);
 extern int unregister_die_notifier(struct notifier_block *);
+extern int register_page_fault_notifier(struct notifier_block *);
+extern int unregister_page_fault_notifier(struct notifier_block *);
 extern struct atomic_notifier_head sparc64die_chain;
 
 extern void bad_trap(struct pt_regs *, long);