tracing: Fix fields of struct trace_iterator that are zeroed by mistake

[firefly-linux-kernel-4.4.55.git] / include / linux / ftrace_event.h

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index f98ab063e95ebc4b5136af2c74d7acae09722578..120d57a1c3a5dcb452a75d4fd21a6d338b128a0d 100644 (file)
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -78,6 +78,11 @@ struct trace_iterator {
        /* trace_seq for __print_flags() and __print_symbolic() etc. */
        struct trace_seq        tmp_seq;
 
+       cpumask_var_t           started;
+
+       /* it's true when current open file is snapshot */
+       bool                    snapshot;
+
        /* The below is zeroed out in pipe_read */
        struct trace_seq        seq;
        struct trace_entry      *ent;
@@ -90,10 +95,7 @@ struct trace_iterator {
        loff_t                  pos;
        long                    idx;
 
-       cpumask_var_t           started;
-
-       /* it's true when current open file is snapshot */
-       bool                    snapshot;
+       /* All new field here will be zeroed out in pipe_read */
 };
 
 enum trace_iter_flags {