From: Li Zefan <lizf@cn.fujitsu.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] tracing: Fix to use unused attribute
Date: Wed, 28 Oct 2009 09:44:55 +0800 [thread overview]
Message-ID: <4AE7A217.8030008@cn.fujitsu.com> (raw)
____ftrace_check_##name() is used for compile-time check
on F_printk() only, so it should be marked as __unused
instead of __used.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
I'm thinking about introducing __always_unused, comparing
to __maybe_unused.
---
kernel/trace/trace_export.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 934d81f..85309fc 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -48,11 +48,12 @@
struct ____ftrace_##name { \
tstruct \
}; \
-static void __used ____ftrace_check_##name(void) \
+static void __attribute__((unused)) \
+____ftrace_check_##name(void) \
{ \
struct ____ftrace_##name *__entry = NULL; \
\
- /* force cmpile-time check on F_printk() */ \
+ /* force compile-time check on F_printk() */ \
printk(print); \
}
--
1.6.3
next reply other threads:[~2009-10-28 1:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-28 1:44 Li Zefan [this message]
2009-10-29 7:57 ` [PATCH] tracing: Fix to use unused attribute Ingo Molnar
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