From c33bd9aac0597eeedaaa01ea5aafe456894b2f2b Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 26 Jun 2006 13:57:47 +0200 Subject: [PATCH] i386/x86-64: fall back to old-style call trace if no unwinding If no unwinding is possible at all for a certain exception instance, fall back to the old style call trace instead of not showing any trace at all. Also, allow setting the stack trace mode at the command line. Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- kernel/unwind.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'kernel') diff --git a/kernel/unwind.c b/kernel/unwind.c index d36bcd3ad3b..0421035272d 100644 --- a/kernel/unwind.c +++ b/kernel/unwind.c @@ -885,14 +885,13 @@ EXPORT_SYMBOL(unwind_init_blocked); * Prepare to unwind the currently running thread. */ int unwind_init_running(struct unwind_frame_info *info, - asmlinkage void (*callback)(struct unwind_frame_info *, - void *arg), + asmlinkage int (*callback)(struct unwind_frame_info *, + void *arg), void *arg) { info->task = current; - arch_unwind_init_running(info, callback, arg); - return 0; + return arch_unwind_init_running(info, callback, arg); } EXPORT_SYMBOL(unwind_init_running); -- cgit v1.2.3