evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

DEBUG: sched: add tracepoint for RD overutilized

Browse source 
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
This commit is contained in:
Patrick Bellasi 2016-02-10 09:24:36 +00:00 • committed by John Stultz
parent c5a00c2dad
commit 93db70f21c
2 changed files with 33 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
include/trace/events/sched.h
View file

@ -888,6 +888,26 @@ TRACE_EVENT(sched_tune_filter,
__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;

21
kernel/sched/fair.c
View file

@ -4242,8 +4242,10 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
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
@ -7503,12 +7505,17 @@ next_group:
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;
} else {
if (!env->dst_rq->rd->overutilized && overutilized)
env->dst_rq->rd->overutilized = true;
trace_sched_overutilized(overutilized);
}
} else {
if (!env->dst_rq->rd->overutilized && overutilized) {
env->dst_rq->rd->overutilized = true;
trace_sched_overutilized(true);
}
}
}
/**
@ -8948,8 +8955,10 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued)
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