/* SPDX-License-Identifier: GPL-2.0 *//* * BPF extensible scheduler class: Documentation/scheduler/sched-ext.rst * * Copyright (c) 2022 Meta Platforms, Inc. and affiliates. * Copyright (c) 2022 Tejun Heo <tj@kernel.org> * Copyright (c) 2022 David Vernet <dvernet@meta.com> */#ifdef CONFIG_SCHED_CLASS_EXT void scx_tick(struct rq *rq);void init_scx_entity(struct sched_ext_entity *scx);void scx_pre_fork(struct task_struct *p);int scx_fork(struct task_struct *p);void scx_post_fork(struct task_struct *p);void scx_cancel_fork(struct task_struct *p);bool scx_can_stop_tick(struct rq *rq);void scx_rq_activate(struct rq *rq);void scx_rq_deactivate(struct rq *rq);int scx_check_setscheduler(struct task_struct *p, int policy);bool task_should_scx(int policy);void init_sched_ext_class(void); static inline u32 scx_cpuperf_target(s32 cpu){	if (scx_enabled())		return cpu_rq(cpu)->scx.cpuperf_target;	else		return 0;} static inline bool task_on_scx(const struct task_struct *p){	return scx_enabled() && p->sched_class == &ext_sched_class;} #ifdef CONFIG_SCHED_COREbool scx_prio_less(const struct task_struct *a, const struct task_struct *b,		   bool in_fi);#endif #else	/* CONFIG_SCHED_CLASS_EXT */ static inline void scx_tick(struct rq *rq) {}static inline void scx_pre_fork(struct task_struct *p) {}static inline int scx_fork(struct task_struct *p) { return 0; }static inline void scx_post_fork(struct task_struct *p) {}static inline void scx_cancel_fork(struct task_struct *p) {}static inline u32 scx_cpuperf_target(s32 cpu) { return 0; }static inline bool scx_can_stop_tick(struct rq *rq) { return true; }static inline void scx_rq_activate(struct rq *rq) {}static inline void scx_rq_deactivate(struct rq *rq) {}static inline int scx_check_setscheduler(struct task_struct *p, int policy) { return 0; }static inline bool task_on_scx(const struct task_struct *p) { return false; }static inline void init_sched_ext_class(void) {} #endif	/* CONFIG_SCHED_CLASS_EXT */ #if defined(CONFIG_SCHED_CLASS_EXT) && defined(CONFIG_SMP)void __scx_update_idle(struct rq *rq, bool idle, bool do_notify); static inline void scx_update_idle(struct rq *rq, bool idle, bool do_notify){	if (scx_enabled())		__scx_update_idle(rq, idle, do_notify);}#elsestatic inline void scx_update_idle(struct rq *rq, bool idle, bool do_notify) {}#endif #ifdef CONFIG_CGROUP_SCHED#ifdef CONFIG_EXT_GROUP_SCHEDint scx_tg_online(struct task_group *tg);void scx_tg_offline(struct task_group *tg);int scx_cgroup_can_attach(struct cgroup_taskset *tset);void scx_move_task(struct task_struct *p);void scx_cgroup_finish_attach(void);void scx_cgroup_cancel_attach(struct cgroup_taskset *tset);void scx_group_set_weight(struct task_group *tg, unsigned long cgrp_weight);void scx_group_set_idle(struct task_group *tg, bool idle);#else	/* CONFIG_EXT_GROUP_SCHED */static inline int scx_tg_online(struct task_group *tg) { return 0; }static inline void scx_tg_offline(struct task_group *tg) {}static inline int scx_cgroup_can_attach(struct cgroup_taskset *tset) { return 0; }static inline void scx_move_task(struct task_struct *p) {}static inline void scx_cgroup_finish_attach(void) {}static inline void scx_cgroup_cancel_attach(struct cgroup_taskset *tset) {}static inline void scx_group_set_weight(struct task_group *tg, unsigned long cgrp_weight) {}static inline void scx_group_set_idle(struct task_group *tg, bool idle) {}#endif	/* CONFIG_EXT_GROUP_SCHED */#endif	/* CONFIG_CGROUP_SCHED */