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sched/topology: Remove unused numa_distance in cpu_attach_domain() 

Bugzilla: http://bugzilla.redhat.com/2020279

commit f9ec6fea201429b5a3f76319e943989f1a1e25ef
Author: Yicong Yang <yangyicong@hisilicon.com>
Date:   Wed Sep 15 14:31:58 2021 +0800

    sched/topology: Remove unused numa_distance in cpu_attach_domain()

    numa_distance in cpu_attach_domain() is introduced in
    commit b5b217346d ("sched/topology: Warn when NUMA diameter > 2")
    to warn user when NUMA diameter > 2 as we'll misrepresent
    the scheduler topology structures at that time. This is
    fixed by Barry in commit 585b6d2723 ("sched/topology: fix the issue
    groups don't span domain->span for NUMA diameter > 2") and
    numa_distance is unused now. So remove it.

    Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Barry Song <baohua@kernel.org>
    Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
    Link: https://lore.kernel.org/r/20210915063158.80639-1-yangyicong@hisilicon.com

Signed-off-by: Phil Auld <pauld@redhat.com>
This commit is contained in:
Phil Auld 2021-11-17 11:58:25 -05:00
parent 328226ca03
commit 0ac59a41d7
1 changed files with 0 additions and 4 deletions
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4
kernel/sched/topology.c
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@ -688,7 +688,6 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu)
{
struct rq *rq = cpu_rq(cpu);
struct sched_domain *tmp;
int numa_distance = 0;
/* Remove the sched domains which do not contribute to scheduling. */
for (tmp = sd; tmp; ) {
@ -732,9 +731,6 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu)
}
}
for (tmp = sd; tmp; tmp = tmp->parent)
numa_distance += !!(tmp->flags & SD_NUMA);
sched_domain_debug(sd, cpu);
rq_attach_root(rq, rd);