1 files changed, 0 insertions, 83 deletions

diff --git a/arch/arm/oprofile/backtrace.c b/arch/arm/oprofile/backtrace.c
deleted file mode 100644
index d805a52b5032..000000000000
--- a/arch/arm/oprofile/backtrace.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Arm specific backtracing code for oprofile
- *
- * Copyright 2005 Openedhand Ltd.
- *
- * Author: Richard Purdie <rpurdie@openedhand.com>
- *
- * Based on i386 oprofile backtrace code by John Levon, David Smith
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/oprofile.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <asm/ptrace.h>
-#include <asm/stacktrace.h>
-
-static int report_trace(struct stackframe *frame, void *d)
-{
-        unsigned int *depth = d;
-
-        if (*depth) {
-                oprofile_add_trace(frame->pc);
-                (*depth)--;
-        }
-
-        return *depth == 0;
-}
-
-/*
- * The registers we're interested in are at the end of the variable
- * length saved register structure. The fp points at the end of this
- * structure so the address of this struct is:
- * (struct frame_tail *)(xxx->fp)-1
- */
-struct frame_tail {
-        struct frame_tail *fp;
-        unsigned long sp;
-        unsigned long lr;
-} __attribute__((packed));
-
-static struct frame_tail* user_backtrace(struct frame_tail *tail)
-{
-        struct frame_tail buftail[2];
-
-        /* Also check accessibility of one struct frame_tail beyond */
-        if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
-                return NULL;
-        if (__copy_from_user_inatomic(buftail, tail, sizeof(buftail)))
-                return NULL;
-
-        oprofile_add_trace(buftail[0].lr);
-
-        /* frame pointers should strictly progress back up the stack
-         * (towards higher addresses) */
-        if (tail >= buftail[0].fp)
-                return NULL;
-
-        return buftail[0].fp-1;
-}
-
-void arm_backtrace(struct pt_regs * const regs, unsigned int depth)
-{
-        struct frame_tail *tail = ((struct frame_tail *) regs->ARM_fp) - 1;
-
-        if (!user_mode(regs)) {
-                struct stackframe frame;
-                frame.fp = regs->ARM_fp;
-                frame.sp = regs->ARM_sp;
-                frame.lr = regs->ARM_lr;
-                frame.pc = regs->ARM_pc;
-                walk_stackframe(&frame, report_trace, &depth);
-                return;
-        }
-
-        while (depth-- && tail && !((unsigned long) tail & 3))
-                tail = user_backtrace(tail);
-}