[PATCH 3.14 15/87] tracing: Add TRACE_ITER_PRINTK flag check in __trace_puts/__trace_bputs

Greg Kroah-Hartman
2014-07-26T19:01:49Z

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

commit f0160a5a2912267c02cfe692eac955c360de5fdf upstream.

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@huawei.com

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
kernel/trace/trace.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -456,6 +456,9 @@ int __trace_puts(unsigned long ip, const
int alloc;
int pc;

+ if (!(trace_flags & TRACE_ITER_PRINTK))
+ return 0;
+
pc = preempt_count();

if (unlikely(tracing_selftest_running || tracing_disabled))
@@ -503,6 +506,9 @@ int __trace_bputs(unsigned long ip, cons
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))