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Commit 63f609b1 authored by Daniel Lezcano's avatar Daniel Lezcano Committed by Ingo Molnar
Browse files

sched: Pass 'struct rq' to on_null_domain() 



The on_null_domain() function is getting the cpu to retrieve the struct rq
associated with it.

Pass 'struct rq' directly to the function as the caller already has the info.

Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1389008085-9069-4-git-send-email-daniel.lezcano@linaro.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 4a725627

kernel/sched/fair.c

+4 −4
Original line number Diff line number Diff line
@@ -6868,9 +6868,9 @@ static void run_rebalance_domains(struct softirq_action *h) 
	nohz_idle_balance(this_cpu, idle);

}



static inline int on_null_domain(int cpu)

static inline int on_null_domain(struct rq *rq)

{

	return !rcu_dereference_sched(cpu_rq(cpu)->sd);

	return !rcu_dereference_sched(rq->sd);

}



/*
@@ -6882,10 +6882,10 @@ void trigger_load_balance(struct rq *rq) 


	/* Don't need to rebalance while attached to NULL domain */

	if (time_after_eq(jiffies, rq->next_balance) &&

	    likely(!on_null_domain(cpu)))

	    likely(!on_null_domain(rq)))

		raise_softirq(SCHED_SOFTIRQ);

#ifdef CONFIG_NO_HZ_COMMON

	if (nohz_kick_needed(rq) && likely(!on_null_domain(cpu)))

	if (nohz_kick_needed(rq) && likely(!on_null_domain(rq)))

		nohz_balancer_kick(cpu);

#endif

}