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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-04-07 16:10:02 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-04-11 16:09:29 +0400 |
| commit | d069b916f7b50021d41d6ce498f86da32a7afaec (patch) | |
| tree | a8ebe91930f393edf737d2c08540a1dd218c94d6 /kernel/sched.c | |
| parent | 2c402dc3bb502e9dd74fce72c14d293fcef4719d (diff) | |
| download | linux-d069b916f7b50021d41d6ce498f86da32a7afaec.tar.xz | |
sched: Reverse the topology list
In order to get rid of static sched_domain::level assignments, reverse
the topology iteration.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20110407122942.876506131@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 00d1e37b4596..38bc53b576a7 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -7114,20 +7114,23 @@ static const struct cpumask *cpu_smt_mask(int cpu) } #endif +/* + * Topology list, bottom-up. + */ static struct sched_domain_topology_level default_topology[] = { -#ifdef CONFIG_NUMA - { sd_init_ALLNODES, cpu_allnodes_mask, }, - { sd_init_NODE, cpu_node_mask, }, -#endif - { sd_init_CPU, cpu_cpu_mask, }, -#ifdef CONFIG_SCHED_BOOK - { sd_init_BOOK, cpu_book_mask, }, +#ifdef CONFIG_SCHED_SMT + { sd_init_SIBLING, cpu_smt_mask, }, #endif #ifdef CONFIG_SCHED_MC { sd_init_MC, cpu_coregroup_mask, }, #endif -#ifdef CONFIG_SCHED_SMT - { sd_init_SIBLING, cpu_smt_mask, }, +#ifdef CONFIG_SCHED_BOOK + { sd_init_BOOK, cpu_book_mask, }, +#endif + { sd_init_CPU, cpu_cpu_mask, }, +#ifdef CONFIG_NUMA + { sd_init_NODE, cpu_node_mask, }, + { sd_init_ALLNODES, cpu_allnodes_mask, }, #endif { NULL, }, }; @@ -7136,18 +7139,18 @@ static struct sched_domain_topology_level *sched_domain_topology = default_topol struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl, struct s_data *d, const struct cpumask *cpu_map, - struct sched_domain_attr *attr, struct sched_domain *parent, + struct sched_domain_attr *attr, struct sched_domain *child, int cpu) { struct sched_domain *sd = tl->init(d, cpu); if (!sd) - return parent; + return child; set_domain_attribute(sd, attr); cpumask_and(sched_domain_span(sd), cpu_map, tl->mask(cpu)); - sd->parent = parent; - if (parent) - parent->child = sd; + if (child) + child->parent = sd; + sd->child = child; return sd; } @@ -7176,6 +7179,9 @@ static int build_sched_domains(const struct cpumask *cpu_map, for (tl = sched_domain_topology; tl->init; tl++) sd = build_sched_domain(tl, &d, cpu_map, attr, sd, i); + while (sd->child) + sd = sd->child; + *per_cpu_ptr(d.sd, i) = sd; } |