The "Sched Events" plugin uses the sched_wakeup events to visualize
the wake up latency of the task. This patch deals with the corner
case, when we have a second sched_wakeup events which tries to wake
up a task which is already running.
Signed-off-by: Yordan Karadzhov <ykaradzhov@xxxxxxxxxx>
---
kernel-shark-qt/src/plugins/SchedEvents.cpp | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/kernel-shark-qt/src/plugins/SchedEvents.cpp b/kernel-shark-qt/src/plugins/SchedEvents.cpp
index b4596c9..ea07662 100644
--- a/kernel-shark-qt/src/plugins/SchedEvents.cpp
+++ b/kernel-shark-qt/src/plugins/SchedEvents.cpp
@@ -139,6 +139,21 @@ static void pluginDraw(plugin_sched_context *plugin_ctx,
ksmodel_get_entry_back(histo, bin, false,
plugin_wakeup_match_rec_pid,
pid, col, &indexOpen);
+
+ if (entryOpen) {
+ int cpu = ksmodel_get_cpu_back(histo, bin,
+ pid,
+ false,
+ col,
+ nullptr);
+ if (cpu >= 0) {
+ /*
+ * The task is already running. Ignore
+ * this wakeup event.
+ */
+ entryOpen = nullptr;
+ }
+ }
}
if (rec) {
--
2.17.1
|