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sched: Expose css_tg()
A new BPF extensible sched_class will use css_tg() in the init and exit paths to visit all task_groups by walking cgroups. v4: __setscheduler_prio() is already exposed. Dropped from this patch. v3: Dropped SCHED_CHANGE_BLOCK() as upstream is adding more generic cleanup mechanism. v2: Expose SCHED_CHANGE_BLOCK() too and update the description. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: David Vernet <dvernet@meta.com> Acked-by: Josh Don <joshdon@google.com> Acked-by: Hao Luo <haoluo@google.com> Acked-by: Barret Rhoden <brho@google.com>
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@ -8942,11 +8942,6 @@ void sched_move_task(struct task_struct *tsk)
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}
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}
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static inline struct task_group *css_tg(struct cgroup_subsys_state *css)
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{
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return css ? container_of(css, struct task_group, css) : NULL;
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}
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static struct cgroup_subsys_state *
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cpu_cgroup_css_alloc(struct cgroup_subsys_state *parent_css)
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{
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@ -514,6 +514,11 @@ static inline int walk_tg_tree(tg_visitor down, tg_visitor up, void *data)
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return walk_tg_tree_from(&root_task_group, down, up, data);
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}
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static inline struct task_group *css_tg(struct cgroup_subsys_state *css)
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{
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return css ? container_of(css, struct task_group, css) : NULL;
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}
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extern int tg_nop(struct task_group *tg, void *data);
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#ifdef CONFIG_FAIR_GROUP_SCHED
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