sh: Use the new stack unwinder API

Instead of implementing our own stack unwinder via dump_trace() we
should use the new stack unwinder API because it is more modular. This
change allows us to decouple the interface for generating stacktraces
from the implementation of a stack unwinder.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/oprofile/backtrace.c b/arch/sh/oprofile/backtrace.c
index 62e4e4d..37cd75d 100644
--- a/arch/sh/oprofile/backtrace.c
+++ b/arch/sh/oprofile/backtrace.c
@@ -17,6 +17,7 @@
 #include <linux/sched.h>
 #include <linux/kallsyms.h>
 #include <linux/mm.h>
+#include <asm/unwinder.h>
 #include <asm/ptrace.h>
 #include <asm/uaccess.h>
 #include <asm/sections.h>
@@ -120,8 +121,8 @@
 	stackaddr = (unsigned long *)regs->regs[15];
 	if (!user_mode(regs)) {
 		if (depth)
-			dump_trace(NULL, regs, stackaddr,
-				   &backtrace_ops, &depth);
+			unwind_stack(NULL, regs, stackaddr,
+				     &backtrace_ops, &depth);
 		return;
 	}