Commit b5cfeac9 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Provide ftrace_make_call()/ftrace_make_nop(). 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 4bc3e719

arch/sh/kernel/ftrace.c

+24 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2008 Matt Fleming <mjf@gentoo.org>

 * Copyright (C) 2008 Paul Mundt <lethal@linux-sh.org>

 *

 * Code for replacing ftrace calls with jumps.

 *
@@ -100,6 +101,29 @@ int ftrace_update_ftrace_func(ftrace_func_t func) 
	return ftrace_modify_code(ip + MCOUNT_INSN_OFFSET, old, new);

}



int ftrace_make_nop(struct module *mod,

		    struct dyn_ftrace *rec, unsigned long addr)

{

	unsigned char *new, *old;

	unsigned long ip = rec->ip;



	old = ftrace_call_replace(ip, addr);

	new = ftrace_nop_replace();



	return ftrace_modify_code(rec->ip, old, new);

}



int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)

{

	unsigned char *new, *old;

	unsigned long ip = rec->ip;



	old = ftrace_nop_replace();

	new = ftrace_call_replace(ip, addr);



	return ftrace_modify_code(rec->ip, old, new);

}



int __init ftrace_dyn_arch_init(void *data)

{

	/* The return code is retured via data */