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Commit cd80917e authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
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sched: fix shares boost logic 



In case the domain is empty, pretend there is a single task on each cpu, so
that together with the boost logic we end up giving 1/n shares to each
cpu.

Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 93b75217

kernel/sched.c

+3 −0
Original line number Diff line number Diff line
@@ -1549,6 +1549,9 @@ tg_shares_up(struct task_group *tg, int cpu, struct sched_domain *sd) 
	if (!sd->parent || !(sd->parent->flags & SD_LOAD_BALANCE))

		shares = tg->shares;



	if (!rq_weight)

		rq_weight = cpus_weight(sd->span) * NICE_0_LOAD;



	for_each_cpu_mask(i, sd->span) {

		struct rq *rq = cpu_rq(i);

		unsigned long flags;