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sh: Provide ftrace_make_call()/ftrace_make_nop(). 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-12-08 12:02:28 +09:00
parent 4bc3e7192c
commit b5cfeac990
1 changed files with 24 additions and 0 deletions
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24
arch/sh/kernel/ftrace.c
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@ -1,5 +1,6 @@
/*
* 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 */