linux-kernel - [PATCH] tracing: Fix some section mismatch warninings

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Date:	Mon, 4 Mar 2013 14:15:59 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH] tracing: Fix some section mismatch warninings

As we've added __init annotation to field-defining functions, we should
add __refdata annotation to event_call variables, which reference those
functions.

Reported-by: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Li Zefan <lizefan@...wei.com>
---
 include/trace/ftrace.h        | 2 +-
 kernel/trace/trace_export.c   | 2 +-
 kernel/trace/trace_syscalls.c | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index dc18af3..3ffaf52 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -570,7 +570,7 @@ static inline void ftrace_test_probe_##call(void)			\
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
 _TRACE_PERF_PROTO(call, PARAMS(proto));					\
 static const char print_fmt_##call[] = print;				\
-static struct ftrace_event_class __used event_class_##call = {		\
+static struct ftrace_event_class __used __refdata event_class_##call = { \
 	.system			= __stringify(TRACE_SYSTEM),		\
 	.define_fields		= ftrace_define_fields_##call,		\
 	.fields			= LIST_HEAD_INIT(event_class_##call.fields),\
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 4f6a91c..d21a746 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -168,7 +168,7 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call)	\
 #define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
 			 regfn)						\
 									\
-struct ftrace_event_class event_class_ftrace_##call = {			\
+struct ftrace_event_class __refdata event_class_ftrace_##call = {	\
 	.system			= __stringify(TRACE_SYSTEM),		\
 	.define_fields		= ftrace_define_fields_##call,		\
 	.fields			= LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index c57fe3d..07d75e5 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -438,7 +438,7 @@ struct trace_event_functions exit_syscall_print_funcs = {
 	.trace		= print_syscall_exit,
 };
 
-struct ftrace_event_class event_class_syscall_enter = {
+struct ftrace_event_class __refdata event_class_syscall_enter = {
 	.system		= "syscalls",
 	.reg		= syscall_enter_register,
 	.define_fields	= syscall_enter_define_fields,
@@ -446,7 +446,7 @@ struct ftrace_event_class event_class_syscall_enter = {
 	.raw_init	= init_syscall_trace,
 };
 
-struct ftrace_event_class event_class_syscall_exit = {
+struct ftrace_event_class __refdata event_class_syscall_exit = {
 	.system		= "syscalls",
 	.reg		= syscall_exit_register,
 	.define_fields	= syscall_exit_define_fields,
-- 
1.8.0.2
--
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