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tracing: Don't pass file_operations array to event_create_dir() 

Now that event_create_dir() and __trace_add_new_event() always
use the same file_operations we can kill these arguments and
simplify the code.

Link: http://lkml.kernel.org/r/20130731173135.GA31040@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Oleg Nesterov 2013-07-31 19:31:35 +02:00 committed by Steven Rostedt
parent 779c5e3791
commit 620a30e97f
1 changed files with 12 additions and 34 deletions
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46
kernel/trace/trace_events.c
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@ -1489,12 +1489,7 @@ event_subsystem_dir(struct trace_array *tr, const char *name,
}
static int
event_create_dir(struct dentry *parent,
struct ftrace_event_file *file,
const struct file_operations *id,
const struct file_operations *enable,
const struct file_operations *filter,
const struct file_operations *format)
event_create_dir(struct dentry *parent, struct ftrace_event_file *file)
{
struct ftrace_event_call *call = file->event_call;
struct trace_array *tr = file->tr;
@ -1522,12 +1517,13 @@ event_create_dir(struct dentry *parent,
if (call->class->reg && !(call->flags & TRACE_EVENT_FL_IGNORE_ENABLE))
trace_create_file("enable", 0644, file->dir, file,
enable);
&ftrace_enable_fops);
#ifdef CONFIG_PERF_EVENTS
if (call->event.type && call->class->reg)
trace_create_file("id", 0444, file->dir,
(void *)(long)call->event.type, id);
(void *)(long)call->event.type,
&ftrace_event_id_fops);
#endif
/*
@ -1544,10 +1540,10 @@ event_create_dir(struct dentry *parent,
}
}
trace_create_file("filter", 0644, file->dir, call,
filter);
&ftrace_event_filter_fops);
trace_create_file("format", 0444, file->dir, call,
format);
&ftrace_event_format_fops);
return 0;
}
@ -1648,12 +1644,7 @@ trace_create_new_event(struct ftrace_event_call *call,
/* Add an event to a trace directory */
static int
__trace_add_new_event(struct ftrace_event_call *call,
struct trace_array *tr,
const struct file_operations *id,
const struct file_operations *enable,
const struct file_operations *filter,
const struct file_operations *format)
__trace_add_new_event(struct ftrace_event_call *call, struct trace_array *tr)
{
struct ftrace_event_file *file;
@ -1661,7 +1652,7 @@ __trace_add_new_event(struct ftrace_event_call *call,
if (!file)
return -ENOMEM;
return event_create_dir(tr->event_dir, file, id, enable, filter, format);
return event_create_dir(tr->event_dir, file);
}
/*
@ -1845,11 +1836,7 @@ __trace_add_event_dirs(struct trace_array *tr)
int ret;
list_for_each_entry(call, &ftrace_events, list) {
ret = __trace_add_new_event(call, tr,
&ftrace_event_id_fops,
&ftrace_enable_fops,
&ftrace_event_filter_fops,
&ftrace_event_format_fops);
ret = __trace_add_new_event(call, tr);
if (ret < 0)
pr_warning("Could not create directory for event %s\n",
call->name);
@ -2157,11 +2144,7 @@ __trace_early_add_event_dirs(struct trace_array *tr)
list_for_each_entry(file, &tr->events, list) {
ret = event_create_dir(tr->event_dir, file,
&ftrace_event_id_fops,
&ftrace_enable_fops,
&ftrace_event_filter_fops,
&ftrace_event_format_fops);
ret = event_create_dir(tr->event_dir, file);
if (ret < 0)
pr_warning("Could not create directory for event %s\n",
file->event_call->name);
@ -2206,13 +2189,8 @@ static void __add_event_to_tracers(struct ftrace_event_call *call)
{
struct trace_array *tr;
list_for_each_entry(tr, &ftrace_trace_arrays, list) {
__trace_add_new_event(call, tr,
&ftrace_event_id_fops,
&ftrace_enable_fops,
&ftrace_event_filter_fops,
&ftrace_event_format_fops);
}
list_for_each_entry(tr, &ftrace_trace_arrays, list)
__trace_add_new_event(call, tr);
}
static struct notifier_block trace_module_nb = {