Re: [PATCH 07/34] sched_ext: Introduce cgroup sub-sched support

[Andrea Righi]

On Tue, Feb 24, 2026 at 07:00:42PM -1000, Tejun Heo wrote:
...
> +/**
> + * scx_is_descendant - Test whether sched is a descendant
> + * @sch: sched to test
> + * @ancestor: ancestor sched to test against
> + *
> + * Test whether @sch is a descendant of @ancestor.
> + */
> +static bool scx_is_descendant(struct scx_sched *sch, struct scx_sched *ancestor)
> +{
> +	if (sch->level < ancestor->level)
> +		return false;
> +	return sch->ancestors[ancestor->level] == ancestor;
> +}

This seems to be used only later (patch 31/34), so it's an unused function
for now and may break git bisect. Maybe we should introduce this later?

Thanks,
-Andrea