menu_select plugin

useful to see what the menu governor is predicting

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/timechart/plugins/menu_select.py b/timechart/plugins/menu_select.py
new file mode 100644
index 0000000..c9f58fd
--- /dev/null
+++ b/timechart/plugins/menu_select.py
@@ -0,0 +1,54 @@
+from timechart.plugin import *
+from timechart import colors
+from timechart.model import tcProcess
+
+class menu_select(plugin):
+    additional_colors = """
+menu_select_bg		#e5bebe
+menu_select		#ee0000
+"""
+    additional_ftrace_parsers = [
+    ( 'menu_select', 'expected:%d predicted %d state:%s %d','expected','predicted','next_state','num_state'),
+    ]
+    additional_process_types = {
+        "menu_select":(tcProcess, POWER_CLASS),
+        }
+    @staticmethod
+    def do_event_menu_select(proj,event):
+        found = 0
+        i = 0
+        while not found:
+            p = proj.generic_find_process(0,"menu_select_cpu%d_%d_predicted"%(event.common_cpu,i),"menu_select")
+            p2 = proj.generic_find_process(0,"menu_select_cpu%d_%d_expected"%(event.common_cpu,i),"menu_select")
+            if len(p['end_ts'])>0 and len(p2['end_ts'])>0 and (p['end_ts'][-1]>event.timestamp or p2['end_ts'][-1]>event.timestamp):
+                i+=1
+                continue
+            found = 1
+        p['start_ts'].append(int(event.timestamp))
+        p['end_ts'].append(int(event.timestamp+event.predicted))
+        p['types'].append(colors.get_color_id("menu_select"))
+        p['cpus'].append(event.common_cpu)
+        p['linenumbers'].append(event.linenumber)
+
+        p = p2
+        p['start_ts'].append(int(event.timestamp))
+        p['end_ts'].append(int(event.timestamp+event.expected))
+        p['types'].append(colors.get_color_id("menu_select"))
+        p['cpus'].append(event.common_cpu)
+        p['linenumbers'].append(event.linenumber)
+plugin_register(menu_select)
+
+menu_select_patch="""
+diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
+index 1b12870..4b18893 100644
+--- a/drivers/cpuidle/governors/menu.c
++++ b/drivers/cpuidle/governors/menu.c
+@@ -292,6 +292,7 @@ static int menu_select(struct cpuidle_device *dev)
+                data->exit_us = s->exit_latency;
+                data->last_state_idx = i;
+        }
++       trace_printk("expected:%u predicted %llu state:%s %d\n",data->expected_us, data->predicted_us, dev->states[data->last_state_idx].name, dev->state_count);
+
+        return data->last_state_idx;
+ }
+"""