trace-graph: Show CPU not task on task plot display

The plot of a task, we already know what task it is. It would be nice
to know what CPU a task is on at a given location.

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

1 files changed, 6 insertions, 8 deletions

diff --git a/trace-plot-task.c b/trace-plot-task.c
index f341493..6ba4fb1 100644
--- a/trace-plot-task.c
+++ b/trace-plot-task.c
@@ -684,7 +684,9 @@ int task_plot_display_info(struct graph_info *ginfo,
         struct pevent *pevent;
         unsigned long sec, usec;
         const char *comm;
+        int cpu;
         int type;
+        int sched_pid = -1;
         int pid;
 
         pid = task_info->pid;
@@ -695,7 +697,7 @@ int task_plot_display_info(struct graph_info *ginfo,
         pevent = ginfo->pevent;
 
         pid = pevent_data_pid(ginfo->pevent, record);
-        comm = pevent_data_comm_from_pid(ginfo->pevent, pid);
+        cpu = record->cpu;
 
         convert_nano(record->ts, &sec, &usec);
 
@@ -713,16 +715,12 @@ int task_plot_display_info(struct graph_info *ginfo,
                         trace_seq_putc(s, '\n');
                 } else
                         trace_seq_printf(s, "UNKNOW EVENT %d\n", type);
-        } else {
-                if (record->ts < time)
-                        trace_graph_check_sched_switch(ginfo, record, &pid, &comm);
         }
+        trace_graph_check_sched_switch(ginfo, record, &sched_pid, &comm);
 
         trace_seq_printf(s, "%lu.%06lu", sec, usec);
-        if (pid)
-                trace_seq_printf(s, " %s-%d", comm, pid);
-        else
-                trace_seq_puts(s, " <idle>");
+        if (pid == task_info->pid || sched_pid == task_info->pid)
+                trace_seq_printf(s, " CPU: %03d", cpu);
 
         free_record(record);