ANDROID: DEBUG: sched: add tracepoint for RD overutilized
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: Andres Oportus <andresoportus@google.com>
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 230dc43..a1edd59 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -912,6 +912,26 @@
__entry->payoff, __entry->region)
);
+/*
+ * Tracepoint for system overutilized flag
+ */
+TRACE_EVENT(sched_overutilized,
+
+ TP_PROTO(bool overutilized),
+
+ TP_ARGS(overutilized),
+
+ TP_STRUCT__entry(
+ __field( bool, overutilized )
+ ),
+
+ TP_fast_assign(
+ __entry->overutilized = overutilized;
+ ),
+
+ TP_printk("overutilized=%d",
+ __entry->overutilized ? 1 : 0)
+);
#ifdef CONFIG_SCHED_WALT
struct rq;
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 9535cc2..02b36ca 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4637,8 +4637,10 @@
if (!se) {
walt_inc_cumulative_runnable_avg(rq, p);
if (!task_new && !rq->rd->overutilized &&
- cpu_overutilized(rq->cpu))
+ cpu_overutilized(rq->cpu)) {
rq->rd->overutilized = true;
+ trace_sched_overutilized(true);
+ }
/*
* We want to potentially trigger a freq switch
@@ -8190,12 +8192,17 @@
env->dst_rq->rd->overload = overload;
/* Update over-utilization (tipping point, U >= 0) indicator */
- if (env->dst_rq->rd->overutilized != overutilized)
+ if (env->dst_rq->rd->overutilized != overutilized) {
env->dst_rq->rd->overutilized = overutilized;
+ trace_sched_overutilized(overutilized);
+ }
} else {
- if (!env->dst_rq->rd->overutilized && overutilized)
+ if (!env->dst_rq->rd->overutilized && overutilized) {
env->dst_rq->rd->overutilized = true;
+ trace_sched_overutilized(true);
+ }
}
+
}
/**
@@ -9586,8 +9593,10 @@
task_tick_numa(rq, curr);
#ifdef CONFIG_SMP
- if (!rq->rd->overutilized && cpu_overutilized(task_cpu(curr)))
+ if (!rq->rd->overutilized && cpu_overutilized(task_cpu(curr))) {
rq->rd->overutilized = true;
+ trace_sched_overutilized(true);
+ }
rq->misfit_task = !task_fits_max(curr, rq->cpu);
#endif