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ANDROID: GKI: sched: add rvh for new cfs task util

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A vendor hook is added in post_init_entity_util_avg before
a new cfs task's util is attached to cfs_rq's util so that
vendors can gather and modify se's information to modify
scheduling behavior and DVFS as they want.

trace_android_rvh_new_task_stats is not a proper hook because
it is called after the task's util is attached to cfs_rq's util,
which means updating cfs_rq's sched_avg and DVFS request are done.

Bug: 184219858

Signed-off-by: Choonghoon Park <choong.park@samsung.com>
Change-Id: I2deaa93297f8464895978496c9838cdffaa35b7f
(cherry picked from commit 1eea1cbdd3)
This commit is contained in:
Choonghoon Park 2021-04-01 13:59:15 +09:00 committed by xieliujie
parent 07efa91ae9
commit ca0b1abfc5
3 changed files with 7 additions and 0 deletions
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3
include/trace/hooks/sched.h
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@ -367,6 +367,9 @@ DECLARE_HOOK(android_vh_dup_task_struct,
TP_PROTO(struct task_struct *tsk, struct task_struct *orig), TP_PROTO(struct task_struct *tsk, struct task_struct *orig),
TP_ARGS(tsk, orig)); TP_ARGS(tsk, orig));
DECLARE_RESTRICTED_HOOK(android_rvh_post_init_entity_util_avg,
TP_PROTO(struct sched_entity *se),
TP_ARGS(se), 1);
/* macro versions of hooks are no longer required */ /* macro versions of hooks are no longer required */
#endif /* _TRACE_HOOK_SCHED_H */ #endif /* _TRACE_HOOK_SCHED_H */

3
kernel/sched/fair.c
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@ -869,6 +869,9 @@ void post_init_entity_util_avg(struct task_struct *p)
} }
sa->runnable_avg = sa->util_avg; sa->runnable_avg = sa->util_avg;
/* Hook before this se's util is attached to cfs_rq's util */
trace_android_rvh_post_init_entity_util_avg(se);
} }
#else /* !CONFIG_SMP */ #else /* !CONFIG_SMP */

1
kernel/sched/vendor_hooks.c
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@ -94,3 +94,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_account_process_tick_gran);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_account_task_time); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_account_task_time);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dup_task_struct); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dup_task_struct);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_irqtime_account_process_tick); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_irqtime_account_process_tick);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_post_init_entity_util_avg);