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[PATCH] sched: fix group power for allnodes_domains

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Current sched groups power calculation for allnodes_domains is wrong.  We
should really be using cumulative power of the physical packages in that
group (similar to the calculation in node_domains)

Signed-off-by: Suresh Siddha <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Siddha, Suresh B 2006-03-27 01:15:23 -08:00 • committed by Linus Torvalds
commit 0806903316
1 changed files with 29 additions and 33 deletions
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62
kernel/sched.c
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@ -5621,6 +5621,32 @@ static int cpu_to_allnodes_group(int cpu)
{
return cpu_to_node(cpu);
}
static void init_numa_sched_groups_power(struct sched_group *group_head)
{
struct sched_group *sg = group_head;
int j;
if (!sg)
return;
next_sg:
for_each_cpu_mask(j, sg->cpumask) {
struct sched_domain *sd;
sd = &per_cpu(phys_domains, j);
if (j != first_cpu(sd->groups->cpumask)) {
/*
* Only add "power" once for each
* physical package.
*/
continue;
}
sg->cpu_power += sd->groups->cpu_power;
}
sg = sg->next;
if (sg != group_head)
goto next_sg;
}
#endif
/*
@ -5866,43 +5892,13 @@ void build_sched_domains(const cpumask_t *cpu_map)
(cpus_weight(sd->groups->cpumask)-1) / 10;
sd->groups->cpu_power = power;
#endif
#ifdef CONFIG_NUMA
sd = &per_cpu(allnodes_domains, i);
if (sd->groups) {
power = SCHED_LOAD_SCALE + SCHED_LOAD_SCALE *
(cpus_weight(sd->groups->cpumask)-1) / 10;
sd->groups->cpu_power = power;
}
#endif
}
#ifdef CONFIG_NUMA
for (i = 0; i < MAX_NUMNODES; i++) {
struct sched_group *sg = sched_group_nodes[i];
int j;
for (i = 0; i < MAX_NUMNODES; i++)
init_numa_sched_groups_power(sched_group_nodes[i]);
if (sg == NULL)
continue;
next_sg:
for_each_cpu_mask(j, sg->cpumask) {
struct sched_domain *sd;
sd = &per_cpu(phys_domains, j);
if (j != first_cpu(sd->groups->cpumask)) {
/*
* Only add "power" once for each
* physical package.
*/
continue;
}
sg->cpu_power += sd->groups->cpu_power;
}
sg = sg->next;
if (sg != sched_group_nodes[i])
goto next_sg;
}
init_numa_sched_groups_power(sched_group_allnodes);
#endif
/* Attach the domains */