Commit ad8d7042 authored May 11, 2016 by Pavankumar Kondeti Committed by Satya Durga Srinivasu Prabhala Jun 29, 2018

sched/walt: don't account CPU idle exit time to task demand



Discount the CPU idle exit time from the first task picked up to
run on an idle CPU.

Change-Id: Iaca5f7c022fbffeaa288ed09928fe34ac8bf5b9f
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: trivial merge conflict resolution]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>

parent eb61a9d9

kernel/sched/walt.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1609,6 +1609,13 @@ account_busy_for_task_demand(struct rq rq, struct task_struct p, int event)
		(event == PICK_NEXT_TASK \|\| event == TASK_MIGRATE)))
		return 0;

		/*
		* The idle exit time is not accounted for the first task _picked_ up to
		* run on the idle CPU.
		*/
		if (event == PICK_NEXT_TASK && rq->curr == rq->idle)
		return 0;

		/*
		* TASK_UPDATE can be called on sleeping task, when its moved between
		* related groups