[PATCH --next] tracing: Make tracepoint_print_iter static

[Xiu Jianfeng]

After change in commit 4239174570da ("tracing: Make tracepoint_printk a
static_key"), this symbol is not used outside of the file, so mark it
static.

Signed-off-by: Xiu Jianfeng <xiujianfeng@xxxxxxxxxx>
---
 kernel/trace/trace.c | 2 +-
 kernel/trace/trace.h | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 47a44b055a1d..11a7214a2f49 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -85,7 +85,7 @@ void __init disable_tracing_selftest(const char *reason)
 #endif
 
 /* Pipe tracepoints to printk */
-struct trace_iterator *tracepoint_print_iter;
+static struct trace_iterator *tracepoint_print_iter;
 int tracepoint_printk;
 static bool tracepoint_printk_stop_on_boot __initdata;
 static DEFINE_STATIC_KEY_FALSE(tracepoint_printk_key);
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 54ee5711c729..d9b470a0adf2 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1941,8 +1941,6 @@ static inline void tracer_hardirqs_on(unsigned long a0, unsigned long a1) { }
 static inline void tracer_hardirqs_off(unsigned long a0, unsigned long a1) { }
 #endif
 
-extern struct trace_iterator *tracepoint_print_iter;
-
 /*
  * Reset the state of the trace_iterator so that it can read consumed data.
  * Normally, the trace_iterator is used for reading the data when it is not
-- 
2.17.1