From: Feng Zhou <zhoufeng.zf@xxxxxxxxxxxxx>Acked-by: Yonghong Song <yhs@xxxxxx>
Add a kfunc that's similar to the bpf_current_task_under_cgroup.
The difference is that it is a designated task.
When hook sched related functions, sometimes it is necessary to
specify a task instead of the current task.
Signed-off-by: Feng Zhou <zhoufeng.zf@xxxxxxxxxxxxx>