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ftrace: Remove return value of ftrace_arch_modify_*()

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All instances of the function ftrace_arch_modify_prepare() and
  ftrace_arch_modify_post_process() return zero. There's no point in
  checking their return value. Just have them be void functions.

Link: https://lkml.kernel.org/r/20220518023639.4065-1-kunyu@nfschina.com

Signed-off-by: Li kunyu <kunyu@nfschina.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Li kunyu
2022-05-18 10:36:40 +08:00
committed by Steven Rostedt (Google)
parent 2decd16f47
commit 3a2bfec0b0
6 changed files with 13 additions and 28 deletions
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16
kernel/trace/ftrace.c
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@@ -2704,18 +2704,16 @@ ftrace_nop_initialize(struct module *mod, struct dyn_ftrace *rec)
* archs can override this function if they must do something
* before the modifying code is performed.
*/
int __weak ftrace_arch_code_modify_prepare(void)
void __weak ftrace_arch_code_modify_prepare(void)
{
return 0;
}
/*
* archs can override this function if they must do something
* after the modifying code is performed.
*/
int __weak ftrace_arch_code_modify_post_process(void)
void __weak ftrace_arch_code_modify_post_process(void)
{
return 0;
}
void ftrace_modify_all_code(int command)
@@ -2801,12 +2799,7 @@ void __weak arch_ftrace_update_code(int command)
static void ftrace_run_update_code(int command)
{
int ret;
ret = ftrace_arch_code_modify_prepare();
FTRACE_WARN_ON(ret);
if (ret)
return;
ftrace_arch_code_modify_prepare();
/*
* By default we use stop_machine() to modify the code.
@@ -2816,8 +2809,7 @@ static void ftrace_run_update_code(int command)
*/
arch_ftrace_update_code(command);
ret = ftrace_arch_code_modify_post_process();
FTRACE_WARN_ON(ret);
ftrace_arch_code_modify_post_process();
}
static void ftrace_run_modify_code(struct ftrace_ops *ops, int command,