tracing/filter: Remove field_name from filter_pred struct

The field_name was used just for finding event's fields. This way we
don't need to care about field_name allocation/free.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1313072754-4620-4-git-send-email-jolsa@redhat.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 1 insertions, 10 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 616846bcfee5..2eb3cf6d37bc 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -761,16 +761,7 @@ struct filter_pred {
         filter_pred_fn_t        fn;
         u64                     val;
         struct regex            regex;
-        /*
-         * Leaf nodes use field_name, ops is used by AND and OR
-         * nodes. The field_name is always freed when freeing a pred.
-         * We can overload field_name for ops and have it freed
-         * as well.
-         */
-        union {
-                char            *field_name;
-                unsigned short  *ops;
-        };
+        unsigned short          *ops;
         int                     offset;
         int                     not;
         int                     op;