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tracing: Add helper function trace_create_new_event() to remove duplicate code 

Both __trace_add_new_event() and __trace_early_add_new_event() do
basically the same thing, except that __trace_add_new_event() does
a little more.

Instead of having duplicate code between the two functions, add
a helper function trace_create_new_event() that both can use.
This will help against having bugs fixed in one function but not
the other.

Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-05-09 15:00:07 -04:00 committed by Steven Rostedt
parent 1cf4c0732d
commit da511bf33e
1 changed files with 20 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
kernel/trace/trace_events.c
View File

@ -1529,6 +1529,24 @@ __register_event(struct ftrace_event_call *call, struct module *mod)
return 0; return 0;
} }
static struct ftrace_event_file *
trace_create_new_event(struct ftrace_event_call *call,
struct trace_array *tr)
{
struct ftrace_event_file *file;
file = kmem_cache_alloc(file_cachep, GFP_TRACE);
if (!file)
return NULL;
file->event_call = call;
file->tr = tr;
atomic_set(&file->sm_ref, 0);
list_add(&file->list, &tr->events);
return file;
}
/* Add an event to a trace directory */ /* Add an event to a trace directory */
static int static int
__trace_add_new_event(struct ftrace_event_call *call, __trace_add_new_event(struct ftrace_event_call *call,
@ -1540,15 +1558,10 @@ __trace_add_new_event(struct ftrace_event_call *call,
{ {
struct ftrace_event_file *file; struct ftrace_event_file *file;
file = kmem_cache_alloc(file_cachep, GFP_TRACE); file = trace_create_new_event(call, tr);
if (!file) if (!file)
return -ENOMEM; return -ENOMEM;
file->event_call = call;
file->tr = tr;
atomic_set(&file->sm_ref, 0);
list_add(&file->list, &tr->events);
return event_create_dir(tr->event_dir, file, id, enable, filter, format); return event_create_dir(tr->event_dir, file, id, enable, filter, format);
} }
@ -1563,15 +1576,10 @@ __trace_early_add_new_event(struct ftrace_event_call *call,
{ {
struct ftrace_event_file *file; struct ftrace_event_file *file;
file = kmem_cache_alloc(file_cachep, GFP_TRACE); file = trace_create_new_event(call, tr);
if (!file) if (!file)
return -ENOMEM; return -ENOMEM;
file->event_call = call;
file->tr = tr;
atomic_set(&file->sm_ref, 0);
list_add(&file->list, &tr->events);
return 0; return 0;
} }