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tracing: Make register/unregister_ftrace_command __init 

register/unregister_ftrace_command() are only ever called from __init
functions, so can themselves be made __init.

Also make register_snapshot_cmd() __init for the same reason.

Link: http://lkml.kernel.org/r/d4042c8cadb7ae6f843ac9a89a24e1c6a3099727.1382620672.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Tom Zanussi 2013-10-24 08:34:18 -05:00 committed by Steven Rostedt
parent f306cc82a9
commit 38de93abec
3 changed files with 14 additions and 6 deletions
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4
include/linux/ftrace.h
View File

@ -533,11 +533,11 @@ static inline int ftrace_force_update(void) { return 0; }
static inline void ftrace_disable_daemon(void) { }
static inline void ftrace_enable_daemon(void) { }
static inline void ftrace_release_mod(struct module *mod) {}
static inline int register_ftrace_command(struct ftrace_func_command *cmd)
static inline __init int register_ftrace_command(struct ftrace_func_command *cmd)
{
return -EINVAL;
}
static inline int unregister_ftrace_command(char *cmd_name)
static inline __init int unregister_ftrace_command(char *cmd_name)
{
return -EINVAL;
}

12
kernel/trace/ftrace.c
View File

@ -3307,7 +3307,11 @@ void unregister_ftrace_function_probe_all(char *glob)
static LIST_HEAD(ftrace_commands);
static DEFINE_MUTEX(ftrace_cmd_mutex);
int register_ftrace_command(struct ftrace_func_command *cmd)
/*
* Currently we only register ftrace commands from __init, so mark this
* __init too.
*/
__init int register_ftrace_command(struct ftrace_func_command *cmd)
{
struct ftrace_func_command *p;
int ret = 0;
@ -3326,7 +3330,11 @@ int register_ftrace_command(struct ftrace_func_command *cmd)
return ret;
}
int unregister_ftrace_command(struct ftrace_func_command *cmd)
/*
* Currently we only unregister ftrace commands from __init, so mark
* this __init too.
*/
__init int unregister_ftrace_command(struct ftrace_func_command *cmd)
{
struct ftrace_func_command *p, *n;
int ret = -ENODEV;

4
kernel/trace/trace.c
View File

@ -5477,12 +5477,12 @@ static struct ftrace_func_command ftrace_snapshot_cmd = {
.func = ftrace_trace_snapshot_callback,
};
static int register_snapshot_cmd(void)
static __init int register_snapshot_cmd(void)
{
return register_ftrace_command(&ftrace_snapshot_cmd);
}
#else
static inline int register_snapshot_cmd(void) { return 0; }
static inline __init int register_snapshot_cmd(void) { return 0; }
#endif /* defined(CONFIG_TRACER_SNAPSHOT) && defined(CONFIG_DYNAMIC_FTRACE) */
struct dentry *tracing_init_dentry_tr(struct trace_array *tr)