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sched/ext: Use tg_cgroup() to elieminate duplicate code

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Use tg_cgroup() to eliminate duplicate code patterns
in scx_bpf_task_cgroup().

Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Zhang Qiao 2024-09-26 10:15:05 +08:00 committed by Tejun Heo
parent e418cd2b80
commit 161853a78b
1 changed files with 2 additions and 9 deletions
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11
kernel/sched/ext.c
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@ -7130,15 +7130,8 @@ __bpf_kfunc struct cgroup *scx_bpf_task_cgroup(struct task_struct *p)
if (!scx_kf_allowed_on_arg_tasks(__SCX_KF_RQ_LOCKED, p))
goto out;
/*
* A task_group may either be a cgroup or an autogroup. In the latter
* case, @tg->css.cgroup is %NULL. A task_group can't become the other
* kind once created.
*/
if (tg && tg->css.cgroup)
cgrp = tg->css.cgroup;
else
cgrp = &cgrp_dfl_root.cgrp;
cgrp = tg_cgrp(tg);
out:
cgroup_get(cgrp);
return cgrp;