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sched: Fix the relax_domain_level boot parameter
It does not get processed because sched_domain_level_max is 0 at the time that setup_relax_domain_level() is run. Simply accept the value as it is, as we don't know the value of sched_domain_level_max until sched domain construction is completed. Fix sched_relax_domain_level in cpuset. The build_sched_domain() routine calls the set_domain_attribute() routine prior to setting the sd->level, however, the set_domain_attribute() routine relies on the sd->level to decide whether idle load balancing will be off/on. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120605184436.GA15668@sgi.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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1 changed files with 3 additions and 6 deletions
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@ -6268,11 +6268,8 @@ int sched_domain_level_max;
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static int __init setup_relax_domain_level(char *str)
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{
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unsigned long val;
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val = simple_strtoul(str, NULL, 0);
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if (val < sched_domain_level_max)
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default_relax_domain_level = val;
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if (kstrtoint(str, 0, &default_relax_domain_level))
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pr_warn("Unable to set relax_domain_level\n");
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return 1;
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}
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@ -6698,7 +6695,6 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
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if (!sd)
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return child;
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set_domain_attribute(sd, attr);
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cpumask_and(sched_domain_span(sd), cpu_map, tl->mask(cpu));
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if (child) {
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sd->level = child->level + 1;
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@ -6706,6 +6702,7 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
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child->parent = sd;
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}
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sd->child = child;
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set_domain_attribute(sd, attr);
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return sd;
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}
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