trace-graph: Fix missing lines at start and end of graph

The start and end of the graph did not add task lines if the running task
was not idle at either the start or end of the trace.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 17 insertions, 1 deletions

diff --git a/trace-graph.c b/trace-graph.c
index dd99b4b..b2ff3b2 100644
--- a/trace-graph.c
+++ b/trace-graph.c
@@ -661,7 +661,7 @@ static void draw_cpu(struct graph_info *ginfo, gint cpu,
         struct record *record;
         static GdkGC *gc;
         guint64 ts;
-        gint last_pid = 0;
+        gint last_pid = -1;
         gint last_x = 0;
         gint pid;
         gint x;
@@ -690,6 +690,10 @@ static void draw_cpu(struct graph_info *ginfo, gint cpu,
                         pid = pevent_data_pid(ginfo->pevent, record);
 
                 if (last_pid != pid) {
+
+                        if (last_pid < 0)
+                                last_pid = pid;
+
                         if (last_pid) {
                                 gdk_draw_line(ginfo->curr_pixmap, gc,
                                               last_x, CPU_TOP(cpu),
@@ -710,6 +714,18 @@ static void draw_cpu(struct graph_info *ginfo, gint cpu,
                 free(record);
         }
 
+
+        if (last_pid > 0) {
+                x = ginfo->draw_width;
+
+                gdk_draw_line(ginfo->curr_pixmap, gc,
+                              last_x, CPU_TOP(cpu),
+                              x, CPU_TOP(cpu));
+                gdk_draw_line(ginfo->curr_pixmap, gc,
+                              last_x, CPU_BOTTOM(cpu),
+                              x, CPU_BOTTOM(cpu));
+        }
+
         if (record)
                 free(record);
 }