1 files changed, 0 insertions, 125 deletions
diff --git a/arch/blackfin/kernel/ftrace.c b/arch/blackfin/kernel/ftrace.c
deleted file mode 100644
index 8dad7589b843..000000000000
--- a/arch/blackfin/kernel/ftrace.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * ftrace graph code
- *
- * Copyright (C) 2009-2010 Analog Devices Inc.
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/ftrace.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/uaccess.h>
-#include <linux/atomic.h>
-#include <asm/cacheflush.h>
-
-#ifdef CONFIG_DYNAMIC_FTRACE
-
-static const unsigned char mnop[] = {
-	0x03, 0xc0, 0x00, 0x18, /* MNOP; */
-	0x03, 0xc0, 0x00, 0x18, /* MNOP; */
-};
-
-static void bfin_make_pcrel24(unsigned char *insn, unsigned long src,
-                              unsigned long dst)
-{
-	uint32_t pcrel = (dst - src) >> 1;
-	insn[0] = pcrel >> 16;
-	insn[1] = 0xe3;
-	insn[2] = pcrel;
-	insn[3] = pcrel >> 8;
-}
-#define bfin_make_pcrel24(insn, src, dst) bfin_make_pcrel24(insn, src, (unsigned long)(dst))
-
-static int ftrace_modify_code(unsigned long ip, const unsigned char *code,
-                              unsigned long len)
-{
-	int ret = probe_kernel_write((void *)ip, (void *)code, len);
-	flush_icache_range(ip, ip + len);
-	return ret;
-}
-
-int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
-                    unsigned long addr)
-{
-	/* Turn the mcount call site into two MNOPs as those are 32bit insns */
-	return ftrace_modify_code(rec->ip, mnop, sizeof(mnop));
-}
-
-int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
-{
-	/* Restore the mcount call site */
-	unsigned char call[8];
-	call[0] = 0x67; /* [--SP] = RETS; */
-	call[1] = 0x01;
-	bfin_make_pcrel24(&call[2], rec->ip + 2, addr);
-	call[6] = 0x27; /* RETS = [SP++]; */
-	call[7] = 0x01;
-	return ftrace_modify_code(rec->ip, call, sizeof(call));
-}
-
-int ftrace_update_ftrace_func(ftrace_func_t func)
-{
-	unsigned char call[4];
-	unsigned long ip = (unsigned long)&ftrace_call;
-	bfin_make_pcrel24(call, ip, func);
-	return ftrace_modify_code(ip, call, sizeof(call));
-}
-
-int __init ftrace_dyn_arch_init(void)
-{
-	return 0;
-}
-
-#endif
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-
-# ifdef CONFIG_DYNAMIC_FTRACE
-
-extern void ftrace_graph_call(void);
-
-int ftrace_enable_ftrace_graph_caller(void)
-{
-	unsigned long ip = (unsigned long)&ftrace_graph_call;
-	uint16_t jump_pcrel12 = ((unsigned long)&ftrace_graph_caller - ip) >> 1;
-	jump_pcrel12 |= 0x2000;
-	return ftrace_modify_code(ip, (void *)&jump_pcrel12, sizeof(jump_pcrel12));
-}
-
-int ftrace_disable_ftrace_graph_caller(void)
-{
-	return ftrace_modify_code((unsigned long)&ftrace_graph_call, empty_zero_page, 2);
-}
-
-# endif
-
-/*
- * Hook the return address and push it in the stack of return addrs
- * in current thread info.
- */
-void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
-                           unsigned long frame_pointer)
-{
-	struct ftrace_graph_ent trace;
-	unsigned long return_hooker = (unsigned long)&return_to_handler;
-
-	if (unlikely(atomic_read(&current->tracing_graph_pause)))
-		return;
-
-	if (ftrace_push_return_trace(*parent, self_addr, &trace.depth,
-				     frame_pointer, NULL) == -EBUSY)
-		return;
-
-	trace.func = self_addr;
-
-	/* Only trace if the calling function expects to */
-	if (!ftrace_graph_entry(&trace)) {
-		current->curr_ret_stack--;
-		return;
-	}
-
-	/* all is well in the world !  hijack RETS ... */
-	*parent = return_hooker;
-}
-
-#endif