Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-19 10:31:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

sched/topology: Refactor function build_overlap_sched_groups()

Browse Source 
Create functions build_group_from_child_sched_domain() and
init_overlap_sched_group(). No functional change.

Signed-off-by: Lauro Ramos Venancio <lvenanci@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1492091769-19879-2-git-send-email-lvenanci@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Lauro Ramos Venancio 2017-04-13 10:56:07 -03:00 committed by Ingo Molnar
parent 7708d5f04d
commit 8c0334697d
1 changed files with 43 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
kernel/sched/topology.c
View File

@ -513,6 +513,47 @@ int group_balance_cpu(struct sched_group *sg)
return cpumask_first_and(sched_group_cpus(sg), sched_group_mask(sg));
}
static struct sched_group *
build_group_from_child_sched_domain(struct sched_domain *sd, int cpu)
{
struct sched_group *sg;
struct cpumask *sg_span;
sg = kzalloc_node(sizeof(struct sched_group) + cpumask_size(),
GFP_KERNEL, cpu_to_node(cpu));
if (!sg)
return NULL;
sg_span = sched_group_cpus(sg);
if (sd->child)
cpumask_copy(sg_span, sched_domain_span(sd->child));
else
cpumask_copy(sg_span, sched_domain_span(sd));
return sg;
}
static void init_overlap_sched_group(struct sched_domain *sd,
struct sched_group *sg, int cpu)
{
struct sd_data *sdd = sd->private;
struct cpumask *sg_span;
sg->sgc = *per_cpu_ptr(sdd->sgc, cpu);
if (atomic_inc_return(&sg->sgc->ref) == 1)
build_group_mask(sd, sg);
/*
* Initialize sgc->capacity such that even if we mess up the
* domains and no possible iteration will get us here, we won't
* die on a /0 trap.
*/
sg_span = sched_group_cpus(sg);
sg->sgc->capacity = SCHED_CAPACITY_SCALE * cpumask_weight(sg_span);
sg->sgc->min_capacity = SCHED_CAPACITY_SCALE;
}
static int
build_overlap_sched_groups(struct sched_domain *sd, int cpu)
{
@ -537,31 +578,14 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu)
if (!cpumask_test_cpu(i, sched_domain_span(sibling)))
continue;
sg = kzalloc_node(sizeof(struct sched_group) + cpumask_size(),
GFP_KERNEL, cpu_to_node(cpu));
sg = build_group_from_child_sched_domain(sibling, cpu);
if (!sg)
goto fail;
sg_span = sched_group_cpus(sg);
if (sibling->child)
cpumask_copy(sg_span, sched_domain_span(sibling->child));
else
cpumask_set_cpu(i, sg_span);
cpumask_or(covered, covered, sg_span);
sg->sgc = *per_cpu_ptr(sdd->sgc, i);
if (atomic_inc_return(&sg->sgc->ref) == 1)
build_group_mask(sd, sg);
/*
* Initialize sgc->capacity such that even if we mess up the
* domains and no possible iteration will get us here, we won't
* die on a /0 trap.
*/
sg->sgc->capacity = SCHED_CAPACITY_SCALE * cpumask_weight(sg_span);
sg->sgc->min_capacity = SCHED_CAPACITY_SCALE;
init_overlap_sched_group(sd, sg, i);
/*
* Make sure the first group of this domain contains the