1 files changed, 0 insertions, 63 deletions
diff --git a/arch/metag/oprofile/backtrace.c b/arch/metag/oprofile/backtrace.c
deleted file mode 100644
index 7cc3f37..0000000
--- a/arch/metag/oprofile/backtrace.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2010-2013 Imagination Technologies Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/oprofile.h>
-#include <linux/uaccess.h>
-#include <asm/processor.h>
-#include <asm/stacktrace.h>
-
-#include "backtrace.h"
-
-static void user_backtrace_fp(unsigned long __user *fp, unsigned int depth)
-{
-	while (depth-- && access_ok(VERIFY_READ, fp, 8)) {
-		unsigned long addr;
-		unsigned long __user *fpnew;
-		if (__copy_from_user_inatomic(&addr, fp + 1, sizeof(addr)))
-			break;
-		addr -= 4;
-
-		oprofile_add_trace(addr);
-
-		/* stack grows up, so frame pointers must decrease */
-		if (__copy_from_user_inatomic(&fpnew, fp + 0, sizeof(fpnew)))
-			break;
-		if (fpnew >= fp)
-			break;
-		fp = fpnew;
-	}
-}
-
-static int kernel_backtrace_frame(struct stackframe *frame, void *data)
-{
-	unsigned int *depth = data;
-
-	oprofile_add_trace(frame->pc);
-
-	/* decrement depth and stop if we reach 0 */
-	if ((*depth)-- == 0)
-		return 1;
-
-	/* otherwise onto the next frame */
-	return 0;
-}
-
-void metag_backtrace(struct pt_regs * const regs, unsigned int depth)
-{
-	if (user_mode(regs)) {
-		unsigned long *fp = (unsigned long *)regs->ctx.AX[1].U0;
-		user_backtrace_fp((unsigned long __user __force *)fp, depth);
-	} else {
-		struct stackframe frame;
-		frame.fp = regs->ctx.AX[1].U0;		/* A0FrP */
-		frame.sp = user_stack_pointer(regs);	/* A0StP */
-		frame.lr = 0;				/* from stack */
-		frame.pc = regs->ctx.CurrPC;		/* PC */
-		walk_stackframe(&frame, &kernel_backtrace_frame, &depth);
-	}
-}