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Commit 0e8e85c9 authored by Andreas Herrmann's avatar Andreas Herrmann Committed by Ingo Molnar
Browse files

sched: Separate out build of SMT sched groups from __build_sched_domains 



... to further strip down __build_sched_domains().

Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20090818105751.GH29515@alberich.amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d8173535

kernel/sched.c

+20 −11
Original line number Diff line number Diff line
@@ -8563,6 +8563,25 @@ static struct sched_domain *__build_smt_sched_domain(struct s_data *d, 
	return sd;

}



static void build_sched_groups(struct s_data *d, enum sched_domain_level l,

			       const struct cpumask *cpu_map, int cpu)

{

	switch (l) {

#ifdef CONFIG_SCHED_SMT

	case SD_LV_SIBLING: /* set up CPU (sibling) groups */

		cpumask_and(d->this_sibling_map, cpu_map,

			    topology_thread_cpumask(cpu));

		if (cpu == cpumask_first(d->this_sibling_map))

			init_sched_build_groups(d->this_sibling_map, cpu_map,

						&cpu_to_cpu_group,

						d->send_covered, d->tmpmask);

		break;

#endif

	default:

		break;

	}

}



/*

 * Build sched domains for a given set of cpus and attach the sched domains

 * to the individual cpus
@@ -8597,19 +8616,9 @@ static int __build_sched_domains(const struct cpumask *cpu_map, 
		sd = __build_smt_sched_domain(&d, cpu_map, attr, sd, i);

	}



#ifdef CONFIG_SCHED_SMT

	/* Set up CPU (sibling) groups */

	for_each_cpu(i, cpu_map) {

		cpumask_and(d.this_sibling_map,

			    topology_thread_cpumask(i), cpu_map);

		if (i != cpumask_first(d.this_sibling_map))

			continue;



		init_sched_build_groups(d.this_sibling_map, cpu_map,

					&cpu_to_cpu_group,

					d.send_covered, d.tmpmask);

		build_sched_groups(&d, SD_LV_SIBLING, cpu_map, i);

	}

#endif



#ifdef CONFIG_SCHED_MC

	/* Set up multi-core groups */