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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596/* 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, struct kernel_clone_args *kargs);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);bool scx_allow_ttwu_queue(const struct task_struct *p);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, struct kernel_clone_args *kargs) { 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 bool scx_allow_ttwu_queue(const struct task_struct *p) { return true; }static inline void init_sched_ext_class(void) {}
#endif /* CONFIG_SCHED_CLASS_EXT */
#ifdef CONFIG_SCHED_CLASS_EXTvoid __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_SCHEDvoid scx_tg_init(struct task_group *tg);int 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_cgroup_move_task(struct task_struct *p);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);void scx_group_set_bandwidth(struct task_group *tg, u64 period_us, u64 quota_us, u64 burst_us);#else /* CONFIG_EXT_GROUP_SCHED */static inline void scx_tg_init(struct task_group *tg) {}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_cgroup_move_task(struct task_struct *p) {}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) {}static inline void scx_group_set_bandwidth(struct task_group *tg, u64 period_us, u64 quota_us, u64 burst_us) {}#endif /* CONFIG_EXT_GROUP_SCHED */#endif /* CONFIG_CGROUP_SCHED */