From 3ed67776fc23061180896086a206a02be649dd26 Mon Sep 17 00:00:00 2001
From: Li Zefan <lizf@cn.fujitsu.com>
Date: Wed, 28 Oct 2009 17:37:01 +0800
Subject: [PATCH] tracing/filters: Fix to make system filter work

commit fce29d15b59245597f7f320db4a9f2be0f5fb512
("tracing/filters: Refactor subsystem filter code")
broke system filter accidentally.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4AE810BD.3070009@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 kernel/trace/trace_events_filter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 21d34757b95..50504cb228d 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1230,12 +1230,12 @@ static int replace_system_preds(struct event_subsystem *system,
 				struct filter_parse_state *ps,
 				char *filter_string)
 {
-	struct event_filter *filter = system->filter;
 	struct ftrace_event_call *call;
 	bool fail = true;
 	int err;
 
 	list_for_each_entry(call, &ftrace_events, list) {
+		struct event_filter *filter = call->filter;
 
 		if (!call->define_fields)
 			continue;