Instead of calling build_sched_groups() for each possible sched_domain we might have created, note that we can simply iterate the sched_domain tree and call it for each sched_domain present. Signed-off-by: Peter Zijlstra --- kernel/sched.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) Index: linux-2.6/kernel/sched.c =================================================================== --- linux-2.6.orig/kernel/sched.c +++ linux-2.6/kernel/sched.c @@ -7207,15 +7207,12 @@ static struct sched_domain *__build_smt_ return sd; } -static void build_sched_groups(struct s_data *d, enum sched_domain_level l, +static void build_sched_groups(struct s_data *d, struct sched_domain *sd, const struct cpumask *cpu_map, int cpu) { - struct sched_domain *sd; - - switch (l) { + switch (sd->level) { #ifdef CONFIG_SCHED_SMT case SD_LV_SIBLING: /* set up CPU (sibling) groups */ - sd = &per_cpu(cpu_domains, cpu).sd; if (cpu == cpumask_first(sched_domain_span(sd))) init_sched_build_groups(sched_domain_span(sd), cpu_map, &cpu_to_cpu_group, @@ -7224,7 +7221,6 @@ static void build_sched_groups(struct s_ #endif #ifdef CONFIG_SCHED_MC case SD_LV_MC: /* set up multi-core groups */ - sd = &per_cpu(core_domains, cpu).sd; if (cpu == cpumask_first(sched_domain_span(sd))) init_sched_build_groups(sched_domain_span(sd), cpu_map, &cpu_to_core_group, @@ -7233,7 +7229,6 @@ static void build_sched_groups(struct s_ #endif #ifdef CONFIG_SCHED_BOOK case SD_LV_BOOK: /* set up book groups */ - sd = &per_cpu(book_domains, cpu).sd; if (cpu == cpumask_first(sched_domain_span(sd))) init_sched_build_groups(sched_domain_span(sd), cpu_map, &cpu_to_book_group, @@ -7241,7 +7236,6 @@ static void build_sched_groups(struct s_ break; #endif case SD_LV_CPU: /* set up physical groups */ - sd = &per_cpu(phys_domains, cpu).sd; if (cpu == cpumask_first(sched_domain_span(sd))) init_sched_build_groups(sched_domain_span(sd), cpu_map, &cpu_to_phys_group, @@ -7249,7 +7243,6 @@ static void build_sched_groups(struct s_ break; #ifdef CONFIG_NUMA case SD_LV_NODE: - sd = &per_cpu(node_domains, cpu).sd; if (cpu == cpumask_first(sched_domain_span(sd))) init_sched_build_groups(sched_domain_span(sd), cpu_map, &cpu_to_node_group, @@ -7299,17 +7292,10 @@ static int __build_sched_domains(const s sd = __build_mc_sched_domain(&d, cpu_map, attr, sd, i); sd = __build_smt_sched_domain(&d, cpu_map, attr, sd, i); - for (tmp = sd; tmp; tmp = tmp->parent) + for (tmp = sd; tmp; tmp = tmp->parent) { tmp->span_weight = cpumask_weight(sched_domain_span(tmp)); - } - - for_each_cpu(i, cpu_map) { - build_sched_groups(&d, SD_LV_SIBLING, cpu_map, i); - build_sched_groups(&d, SD_LV_BOOK, cpu_map, i); - build_sched_groups(&d, SD_LV_MC, cpu_map, i); - build_sched_groups(&d, SD_LV_CPU, cpu_map, i); - build_sched_groups(&d, SD_LV_NODE, cpu_map, i); - build_sched_groups(&d, SD_LV_ALLNODES, cpu_map, i); + build_sched_groups(&d, tmp, cpu_map, i); + } } /* Calculate CPU power for physical packages and nodes */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/