2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index bbf40f624fc8..5c093ffc655b 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -51,6 +51,7 @@ struct trace_iterator {
         int                     cpu_file;
         struct mutex            mutex;
         struct ring_buffer_iter *buffer_iter[NR_CPUS];
+        unsigned long           iter_flags;
 
         /* The below is zeroed out in pipe_read */
         struct trace_seq        seq;
@@ -58,7 +59,6 @@ struct trace_iterator {
         int                     cpu;
         u64                     ts;
 
-        unsigned long           iter_flags;
         loff_t                  pos;
         long                    idx;
 
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a3a8a87d7e91..cae34c69752f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2826,6 +2826,9 @@ static int tracing_open_pipe(struct inode *inode, struct file *filp)
         /* trace pipe does not show start of buffer */
         cpumask_setall(iter->started);
 
+        if (trace_flags & TRACE_ITER_LATENCY_FMT)
+                iter->iter_flags |= TRACE_FILE_LAT_FMT;
+
         iter->cpu_file = cpu_file;
         iter->tr = &global_trace;
         mutex_init(&iter->mutex);