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Subject[PATCH] tracing: Fix to use unused attribute
____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


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