[PATCH 3/4] tracing: Add TRACE_ITER_PRINTK flag check in __trace_puts/__trace_bputs

[Steven Rostedt]

From: "zhangwei(Jovi)" <jovi.zhangwei@xxxxxxxxxx>

The TRACE_ITER_PRINTK check in __trace_puts/__trace_bputs is missing,
so add it, to be consistent with __trace_printk/__trace_bprintk.
Those functions are all called by the same function: trace_printk().

Link: http://lkml.kernel.org/p/51E7A7D6.8090900@xxxxxxxxxx

Cc: stable@xxxxxxxxxxxxxxx # 3.11+
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 kernel/trace/trace.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a6ffc8918dda..bda9621638cc 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -468,6 +468,9 @@ int __trace_puts(unsigned long ip, const char *str, int size)
 	int alloc;
 	int pc;
 
+	if (!(trace_flags & TRACE_ITER_PRINTK))
+		return 0;
+
 	pc = preempt_count();
 
 	if (unlikely(tracing_selftest_running || tracing_disabled))
@@ -515,6 +518,9 @@ int __trace_bputs(unsigned long ip, const char *str)
 	int size = sizeof(struct bputs_entry);
 	int pc;
 
+	if (!(trace_flags & TRACE_ITER_PRINTK))
+		return 0;
+
 	pc = preempt_count();
 
 	if (unlikely(tracing_selftest_running || tracing_disabled))
-- 
2.0.0


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