sh: Kill off duplicate page fault notifiers in slow path.
Paul Mundt [Sun, 21 Sep 2008 03:11:25 +0000 (12:11 +0900)]
We already have hooks in place in the __do_page_fault() fast-path,
so kill them off in the slow path.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/mm/fault_32.c

index ef01f45..08a08ea 100644 (file)
@@ -53,13 +53,10 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
        int fault;
        siginfo_t info;
 
-       if (notify_page_fault(regs, lookup_exception_vector()))
-               return;
-
-#ifdef CONFIG_SH_KGDB
-       if (kgdb_nofault && kgdb_bus_err_hook)
-               kgdb_bus_err_hook();
-#endif
+       /*
+        * We don't bother with any notifier callbacks here, as they are
+        * all handled through the __do_page_fault() fast-path.
+        */
 
        tsk = current;
        si_code = SEGV_MAPERR;