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ANDROID: sched: Add vendor hook for rt util update

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Currently rt task util is not tracked like cfs task, so when a rt task
migrates to different cpu, the cpu could not respond with comparable
frequency. Add the hook so that vendor could track rt task util to
improve the system performance.

DISABLE_TOPIC_PROTECTOR

Bug: 201261299
Signed-off-by: Rick Yiu <rickyiu@google.com>
Change-Id: I2f4e5142c6bc8574ee3558042e1fb0dae13b702d
This commit is contained in:
Rick Yiu
2022-03-22 22:22:09 +08:00
committed by Treehugger Robot
parent c6e1897112
commit 3e15db3d1b
3 changed files with 8 additions and 0 deletions
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4
include/trace/hooks/sched.h
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@@ -494,6 +494,10 @@ DECLARE_HOOK(android_vh_prio_restore,
TP_PROTO(int saved_prio),
TP_ARGS(saved_prio));
DECLARE_RESTRICTED_HOOK(android_rvh_update_rt_rq_load_avg,
TP_PROTO(u64 now, struct rq *rq, struct task_struct *tsk, int running),
TP_ARGS(now, rq, tsk, running), 1);
/* macro versions of hooks are no longer required */
#endif /* _TRACE_HOOK_SCHED_H */

3
kernel/sched/rt.c
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@@ -1805,6 +1805,7 @@ static inline void set_next_task_rt(struct rq *rq, struct task_struct *p, bool f
*/
if (rq->donor->sched_class != &rt_sched_class)
update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 0);
trace_android_rvh_update_rt_rq_load_avg(rq_clock_pelt(rq), rq, p, 0);
rt_queue_push_tasks(rq);
}
@@ -1865,6 +1866,7 @@ static void put_prev_task_rt(struct rq *rq, struct task_struct *p, struct task_s
update_curr_rt(rq);
update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 1);
trace_android_rvh_update_rt_rq_load_avg(rq_clock_pelt(rq), rq, p, 1);
if (task_is_blocked(p))
return;
@@ -2783,6 +2785,7 @@ static void task_tick_rt(struct rq *rq, struct task_struct *p, int queued)
update_curr_rt(rq);
update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 1);
trace_android_rvh_update_rt_rq_load_avg(rq_clock_pelt(rq), rq, p, 1);
watchdog(rq, p);

1
kernel/sched/vendor_hooks.c
View File

@@ -128,3 +128,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_dequeue_entity_delayed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmput);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_prio_inheritance);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_prio_restore);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_rt_rq_load_avg);