1 files changed, 3 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index eed732c151fc..508235a39da6 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -395,6 +395,8 @@ struct trace_seq {
         unsigned int            readpos;
 };
 
+#define TRACE_PIPE_ALL_CPU      -1
+
 /*
  * Trace iterator - used by printout routines who present trace
  * results to users and which routines might sleep, etc:
@@ -404,6 +406,7 @@ struct trace_iterator {
         struct tracer           *trace;
         void                    *private;
         struct ring_buffer_iter *buffer_iter[NR_CPUS];
+        int                     cpu_file;
 
         /* The below is zeroed out in pipe_read */
         struct trace_seq        seq;