On 10/03/2025 10:37, Juri Lelli wrote:
> Rebuilding of root domains accounting information (total_bw) is
> currently broken on some cases, e.g. suspend/resume on aarch64. Problem
Nit: Couldn't spot any arch dependency here. I guess it was just tested
on Arm64 platforms so far.
[...]
> diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
> index 44093339761c..363ad268a25b 100644
> --- a/kernel/sched/topology.c
> +++ b/kernel/sched/topology.c
> @@ -2791,6 +2791,7 @@ void partition_sched_domains_locked(int ndoms_new, cpumask_var_t doms_new[],
> ndoms_cur = ndoms_new;
>
> update_sched_domain_debugfs();
> + dl_rebuild_rd_accounting();
Won't dl_rebuild_rd_accounting()'s lockdep_assert_held(&cpuset_mutex)
barf when called via cpuhp's:
sched_cpu_deactivate()
cpuset_cpu_inactive()
partition_sched_domains()
partition_sched_domains_locked()
dl_rebuild_rd_accounting()
?
[...]
