From 8e254c1d183f0225ad21f9049641529e56cce4da Mon Sep 17 00:00:00 2001
From: Li Zefan <lizf@cn.fujitsu.com>
Date: Mon, 31 Aug 2009 16:49:41 +0800
Subject: tracing/filters: Defer pred allocation

init_preds() allocates about 5392 bytes of memory (on x86_32) for
a TRACE_EVENT. With my config, at system boot total memory occupied
is:

	5392 * (642 + 15) == 3459KB

642 == cat available_events | wc -l
15 == number of dirs in events/ftrace

That's quite a lot, so we'd better defer memory allocation util
it's needed, that's when filter is used.

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>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
LKML-Reference: <4A9B8EA5.6020700@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 include/trace/ftrace.h | 1 -
 1 file changed, 1 deletion(-)

(limited to 'include/trace')

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 57c56a998ee6..bfbc842600a1 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -622,7 +622,6 @@ static int ftrace_raw_init_event_##call(void)				\
 		return -ENODEV;						\
 	event_##call.id = id;						\
 	INIT_LIST_HEAD(&event_##call.fields);				\
-	init_preds(&event_##call);					\
 	return 0;							\
 }									\
 									\
-- 
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