trace-view: Have list show filtered tasks waking up

This patch lets wake up events that are waking up a filtered
task still show in the list, even if the waker is not filtered.

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

2 files changed, 78 insertions, 15 deletions

diff --git a/trace-view-store.c b/trace-view-store.c
index 14d8b17..ff964cf 100644
--- a/trace-view-store.c
+++ b/trace-view-store.c
@@ -1249,7 +1249,27 @@ gint get_next_pid(TraceViewStore *store, struct pevent *pevent, struct record *r
         return val;
 }
 
-static gboolean show_task(TraceViewStore *store, gint pid)
+gint get_wakeup_pid(TraceViewStore *store, struct pevent *pevent, struct record *record)
+{
+        unsigned long long val;
+        int ret;
+
+        ret = pevent_read_number_field(store->sched_wakeup_pid_field, record->data, &val);
+
+        return val;
+}
+
+gint get_wakeup_new_pid(TraceViewStore *store, struct pevent *pevent, struct record *record)
+{
+        unsigned long long val;
+        int ret;
+
+        ret = pevent_read_number_field(store->sched_wakeup_new_pid_field, record->data, &val);
+
+        return val;
+}
+
+static gboolean view_task(TraceViewStore *store, gint pid)
 {
         return (!store->task_filter ||
                 !filter_task_count(store->task_filter) ||
@@ -1259,6 +1279,43 @@ static gboolean show_task(TraceViewStore *store, gint pid)
                  !filter_task_find_pid(store->hide_tasks, pid));
 }
 
+static gboolean show_task(TraceViewStore *store, struct pevent *pevent,
+                          struct record *record, gint pid)
+{
+        gint event_id;
+
+        if (view_task(store, pid))
+                return TRUE;
+
+        event_id = pevent_data_type(pevent, record);
+
+        if (store->sched_switch_next_field &&
+            event_id == store->sched_switch_event->id) {
+                /* show sched switch to task */
+                pid = get_next_pid(store, pevent, record);
+                if (view_task(store, pid))
+                        return TRUE;
+        }
+
+        if (store->sched_wakeup_pid_field &&
+            event_id == store->sched_wakeup_event->id) {
+                /* show sched switch to task */
+                pid = get_wakeup_pid(store, pevent, record);
+                if (view_task(store, pid))
+                        return TRUE;
+        }
+
+        if (store->sched_wakeup_new_pid_field &&
+            event_id == store->sched_wakeup_new_event->id) {
+                /* show sched switch to task */
+                pid = get_wakeup_new_pid(store, pevent, record);
+                if (view_task(store, pid))
+                        return TRUE;
+        }
+
+        return FALSE;
+}
+
 static void update_filter_tasks(TraceViewStore *store)
 {
         struct tracecmd_input *handle;
@@ -1281,6 +1338,19 @@ static void update_filter_tasks(TraceViewStore *store)
                         store->sched_switch_next_field =
                                 pevent_find_any_field(store->sched_switch_event,
                                                       "next_pid");
+                store->sched_wakeup_event =
+                        pevent_find_event_by_name(pevent, "sched", "sched_wakeup");
+                if (store->sched_wakeup_event)
+                        store->sched_wakeup_pid_field =
+                                pevent_find_any_field(store->sched_wakeup_event,
+                                                      "pid");
+
+                store->sched_wakeup_new_event =
+                        pevent_find_event_by_name(pevent, "sched", "sched_wakeup");
+                if (store->sched_wakeup_new_event)
+                        store->sched_wakeup_new_pid_field =
+                                pevent_find_any_field(store->sched_wakeup_new_event,
+                                                      "pid");
         }
 
         for (cpu = 0; cpu < store->cpus; cpu++) {
@@ -1307,21 +1377,10 @@ static void update_filter_tasks(TraceViewStore *store)
                         }
 
                         pid = pevent_data_pid(pevent, record);
-                        if (show_task(store, pid))
+                        if (show_task(store, pevent, record, pid))
                                 store->cpu_list[cpu][i].visible = 1;
-                        else {
-                                if (store->sched_switch_next_field &&
-                                    pevent_data_type(pevent, record) ==
-                                    store->sched_switch_event->id) {
-                                        /* show sched switch to task */
-                                        pid = get_next_pid(store, pevent, record);
-                                        if (show_task(store, pid))
-                                                store->cpu_list[cpu][i].visible = 1;
-                                        else
-                                                store->cpu_list[cpu][i].visible = 0;
-                                } else
-                                        store->cpu_list[cpu][i].visible = 0;
-                        }
+                        else
+                                store->cpu_list[cpu][i].visible = 0;
 
  skip:
                         free_record(record);
diff --git a/trace-view-store.h b/trace-view-store.h
index bceb2de..5a9a7a7 100644
--- a/trace-view-store.h
+++ b/trace-view-store.h
@@ -80,6 +80,10 @@ struct trace_view_store
         struct tracecmd_input *handle;
         struct event_format     *sched_switch_event;
         struct format_field     *sched_switch_next_field;
+        struct event_format     *sched_wakeup_event;
+        struct format_field     *sched_wakeup_pid_field;
+        struct event_format     *sched_wakeup_new_event;
+        struct format_field     *sched_wakeup_new_pid_field;
         int                     cpus;
 
         TraceViewRecord         **cpu_list;