--- a/ctf.c
+++ b/ctf.c
@@ -616,6 +616,17 @@ ctf_write_uploaded_tp (struct trace_file
 }
 
 /* This is the implementation of trace_file_write_ops method
+   write_default_collect.  */
+
+static void
+ctf_write_default_collect (struct trace_file_writer *self,
+			   char *collect)
+{
+  /* It is not supported yet to write default collect
+     into CTF trace data.  */
+}
+
+/* This is the implementation of trace_file_write_ops method
    write_definition_end.  */
 
 static void
@@ -847,6 +858,7 @@ static const struct trace_file_write_ops
   ctf_write_status,
   ctf_write_uploaded_tsv,
   ctf_write_uploaded_tp,
+  ctf_write_default_collect,
   ctf_write_definition_end,
   NULL,
   &ctf_write_frame_ops,
--- a/tracepoint.c
+++ b/tracepoint.c
@@ -3237,6 +3237,19 @@ tfile_write_uploaded_tp (struct trace_fi
 }
 
 /* This is the implementation of trace_file_write_ops method
+   write_default_collect.  */
+
+static void
+tfile_write_default_collect (struct trace_file_writer *self,
+			     char *collect)
+{
+  struct tfile_trace_file_writer *writer
+    = (struct tfile_trace_file_writer *) self;
+
+  fprintf (writer->fp, "dc %s\n", collect);
+}
+
+/* This is the implementation of trace_file_write_ops method
    write_definition_end.  */
 
 static void
@@ -3289,6 +3302,7 @@ static const struct trace_file_write_ops
   tfile_write_status,
   tfile_write_uploaded_tsv,
   tfile_write_uploaded_tp,
+  tfile_write_default_collect,
   tfile_write_definition_end,
   tfile_write_raw_data,
   NULL,
@@ -3378,6 +3392,8 @@ trace_save (const char *filename, struct
   for (utp = uploaded_tps; utp; utp = utp->next)
     writer->ops->write_uploaded_tp (writer, utp);
 
+  writer->ops->write_default_collect (writer, default_collect);
+
   free_uploaded_tps (&uploaded_tps);
 
   /* Mark the end of the definition section.  */
@@ -4147,7 +4163,8 @@ int trace_regblock_size;
 
 static void tfile_interp_line (char *line,
 			       struct uploaded_tp **utpp,
-			       struct uploaded_tsv **utsvp);
+			       struct uploaded_tsv **utsvp,
+			       char **collectp);
 
 /* Read SIZE bytes into READBUF from the trace frame, starting at
    TRACE_FD's current position.  Note that this call `read'
@@ -4182,6 +4199,7 @@ tfile_open (char *filename, int from_tty
   struct trace_status *ts;
   struct uploaded_tp *uploaded_tps = NULL;
   struct uploaded_tsv *uploaded_tsvs = NULL;
+  char *uploaded_default_collect = NULL;
 
   target_preopen (from_tty);
   if (!filename)
@@ -4251,7 +4269,8 @@ tfile_open (char *filename, int from_tty
 		break;
 	      linebuf[i] = '\0';
 	      i = 0;
-	      tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs);
+	      tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs,
+				 &uploaded_default_collect);
 	    }
 	  else
 	    linebuf[i++] = byte;
@@ -4289,6 +4308,8 @@ tfile_open (char *filename, int from_tty
 
   merge_uploaded_tracepoints (&uploaded_tps);
 
+  trace_set_default_collect (uploaded_default_collect);
+
   post_create_inferior (&tfile_ops, from_tty);
 }
 
@@ -4297,7 +4318,8 @@ tfile_open (char *filename, int from_tty
 
 static void
 tfile_interp_line (char *line,
-		   struct uploaded_tp **utpp, struct uploaded_tsv **utsvp)
+		   struct uploaded_tp **utpp, struct uploaded_tsv **utsvp,
+		   char **collectp)
 {
   char *p = line;
 
@@ -4321,6 +4343,11 @@ tfile_interp_line (char *line,
       p += strlen ("tsv ");
       parse_tsv_definition (p, utsvp);
     }
+  else if (strncmp (p, "dc ", strlen ("dc ")) == 0)
+    {
+      p += strlen ("dc ");
+      *collectp = xstrdup (p);
+    }
   else
     warning (_("Ignoring trace file definition \"%s\""), line);
 }
--- a/tracepoint.h
+++ b/tracepoint.h
@@ -296,6 +296,10 @@ struct trace_file_write_ops
   void (*write_uploaded_tp) (struct trace_file_writer *self,
 			     struct uploaded_tp *tp);
 
+  /* Write the tracepoint default collect.  */
+  void (*write_default_collect) (struct trace_file_writer *self,
+				 char *collect);
+
   /* Write to mark the end of the definition part.  */
   void (*write_definition_end) (struct trace_file_writer *self);