diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/kernel/ftrace.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c index 6c193d56c2e..4c3247477aa 100644 --- a/arch/sh/kernel/ftrace.c +++ b/arch/sh/kernel/ftrace.c @@ -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 */ |