tracing: Kill "filter_string" arg of replace_preds()

Cosmetic, but replace_preds() doesn't need/use "char *filter_string".
Remove it to microsimplify the code.

Link: http://lkml.kernel.org/p/20140715184832.GA20519@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 3 insertions, 6 deletions

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index c2ef5a5f21da..7a8c1528e141 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1546,7 +1546,6 @@ static int fold_pred_tree(struct event_filter *filter,
 static int replace_preds(struct ftrace_event_call *call,
                          struct event_filter *filter,
                          struct filter_parse_state *ps,
-                         char *filter_string,
                          bool dry_run)
 {
         char *operand1 = NULL, *operand2 = NULL;
@@ -1739,8 +1738,7 @@ static int replace_system_preds(struct ftrace_subsystem_dir *dir,
                  * Try to see if the filter can be applied
                  *  (filter arg is ignored on dry_run)
                  */
-                err = replace_preds(file->event_call, NULL, ps,
-                                        filter_string, true);
+                err = replace_preds(file->event_call, NULL, ps, true);
                 if (err)
                         event_set_no_set_filter_flag(file);
                 else
@@ -1772,8 +1770,7 @@ static int replace_system_preds(struct ftrace_subsystem_dir *dir,
                 if (err)
                         goto fail_mem;
 
-                err = replace_preds(file->event_call, filter, ps,
-                                        filter_string, false);
+                err = replace_preds(file->event_call, filter, ps, false);
                 if (err) {
                         filter_disable(file);
                         parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0);
@@ -1895,7 +1892,7 @@ static int create_filter(struct ftrace_event_call *call,
 
         err = create_filter_start(filter_str, set_str, &ps, &filter);
         if (!err) {
-                err = replace_preds(call, filter, ps, filter_str, false);
+                err = replace_preds(call, filter, ps, false);
                 if (err && set_str)
                         append_filter_err(ps, filter);
         }