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Commit 1c847afb authored by Pavankumar Kondeti's avatar Pavankumar Kondeti Committed by Todd Kjos
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ANDROID: sched: WALT: Refactor cumulative runnable average fixup 



When a runnable task window is rolled over, it's CPU cumulative
runnable average needs to be updated accordingly. Currently this
is handled in a common function for all scheduling classes. However
when CFS_BANDWIDTH is enabled, fair scheduling class needs special
handling. As a preparation step, add a callback in sched_class
for updating the cumulative runnable average. The subsequent patches
make use of this callback and implement a different method for
fair scheduling class.

Bug: 139071966
Change-Id: Iffa88ab89254932177b1ea4eeaf12ec305c1c9c6
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: default avatarTodd Kjos <tkjos@google.com>
parent 5e36f63b

kernel/sched/deadline.c

+3 −0
Original line number Diff line number Diff line
@@ -1937,6 +1937,9 @@ const struct sched_class dl_sched_class = { 
	.switched_to		= switched_to_dl,



	.update_curr		= update_curr_dl,

#ifdef CONFIG_SCHED_WALT

	.fixup_cumulative_runnable_avg = walt_fixup_cumulative_runnable_avg,

#endif

};



#ifdef CONFIG_SCHED_DEBUG

kernel/sched/fair.c

+3 −0
Original line number Diff line number Diff line
@@ -11000,6 +11000,9 @@ const struct sched_class fair_sched_class = { 
#ifdef CONFIG_FAIR_GROUP_SCHED

	.task_change_group	= task_change_group_fair,

#endif

#ifdef CONFIG_SCHED_WALT

	.fixup_cumulative_runnable_avg = walt_fixup_cumulative_runnable_avg,

#endif

};



#ifdef CONFIG_SCHED_DEBUG

kernel/sched/rt.c

+3 −0
Original line number Diff line number Diff line
@@ -2419,6 +2419,9 @@ const struct sched_class rt_sched_class = { 
	.switched_to		= switched_to_rt,



	.update_curr		= update_curr_rt,

#ifdef CONFIG_SCHED_WALT

	.fixup_cumulative_runnable_avg = walt_fixup_cumulative_runnable_avg,

#endif

};



#ifdef CONFIG_SCHED_DEBUG

kernel/sched/sched.h

+5 −0
Original line number Diff line number Diff line
@@ -1453,6 +1453,11 @@ struct sched_class { 
#ifdef CONFIG_FAIR_GROUP_SCHED

	void (*task_change_group) (struct task_struct *p, int type);

#endif

#ifdef CONFIG_SCHED_WALT

	void (*fixup_cumulative_runnable_avg)(struct rq *rq,

					      struct task_struct *task,

					      u64 new_task_load);

#endif

};



static inline void put_prev_task(struct rq *rq, struct task_struct *prev)

kernel/sched/stop_task.c

+3 −0
Original line number Diff line number Diff line
@@ -137,4 +137,7 @@ const struct sched_class stop_sched_class = { 
	.prio_changed		= prio_changed_stop,

	.switched_to		= switched_to_stop,

	.update_curr		= update_curr_stop,

#ifdef CONFIG_SCHED_WALT

	.fixup_cumulative_runnable_avg = walt_fixup_cumulative_runnable_avg,

#endif

};