From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Li Zefan <lizefan@huawei.com>
Subject: [for-next][PATCH 2/6] tracing: Annotate event field-defining functions with __init
Date: Mon, 04 Mar 2013 12:20:07 -0500 [thread overview]
Message-ID: <20130304172615.548061112@goodmis.org> (raw)
In-Reply-To: 20130304172005.362537932@goodmis.org
[-- Attachment #1: 0002-tracing-Annotate-event-field-defining-functions-with.patch --]
[-- Type: text/plain, Size: 1805 bytes --]
From: Li Zefan <lizefan@huawei.com>
Those functions are called either during kernel boot or module init.
Before:
$ dmesg | grep 'Freeing unused kernel memory'
Freeing unused kernel memory: 1208k freed
Freeing unused kernel memory: 1360k freed
Freeing unused kernel memory: 1960k freed
After:
$ dmesg | grep 'Freeing unused kernel memory'
Freeing unused kernel memory: 1236k freed
Freeing unused kernel memory: 1388k freed
Freeing unused kernel memory: 1960k freed
Link: http://lkml.kernel.org/r/5125877D.5000201@huawei.com
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
include/trace/ftrace.h | 2 +-
kernel/trace/trace_export.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 17a77fc..a536f66 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -324,7 +324,7 @@ static struct trace_event_functions ftrace_event_type_funcs_##call = { \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
-static int notrace \
+static int notrace __init \
ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
struct ftrace_raw_##call field; \
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index e039906..4f6a91c 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -129,7 +129,7 @@ static void __always_unused ____ftrace_check_##name(void) \
#undef FTRACE_ENTRY
#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
-int \
+static int __init \
ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
{ \
struct struct_name field; \
--
1.7.10.4
next prev parent reply other threads:[~2013-03-04 17:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-04 17:20 [for-next][PATCH 0/6] tracing: memory savings and minor fixes Steven Rostedt
2013-03-04 17:20 ` [for-next][PATCH 1/6] tracing: Add a helper function for event print functions Steven Rostedt
2013-03-04 17:20 ` Steven Rostedt [this message]
2013-03-04 17:20 ` [for-next][PATCH 3/6] tracing/syscalls: Annotate field-defining functions with __init Steven Rostedt
2013-03-04 17:20 ` [for-next][PATCH 4/6] tracing: Add __per_cpu annotation to trace array percpu data pointer Steven Rostedt
2013-03-04 17:20 ` [for-next][PATCH 5/6] tracing: Fix trace events build without modules Steven Rostedt
2013-03-04 17:20 ` [for-next][PATCH 6/6] tracing: Fix some section mismatch warnings Steven Rostedt
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