dc3444cd91
and documentation into -CURRENT. Bump FreeBSD_version. Reviewed by: alc, jhb (kernel changes)
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*-
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* Copyright (c) 2002, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SCHED_H_
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#define _SYS_SCHED_H_
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/*
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* General scheduling info.
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*
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* sched_load:
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* Total runnable non-ithread threads in the system.
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*
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* sched_runnable:
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* Runnable threads for this processor.
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*/
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int sched_load(void);
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int sched_rr_interval(void);
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int sched_runnable(void);
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/*
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* Proc related scheduling hooks.
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*/
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void sched_exit(struct proc *p, struct thread *childtd);
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void sched_fork(struct thread *td, struct thread *childtd);
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/*
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* KSE Groups contain scheduling priority information. They record the
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* behavior of groups of KSEs and threads.
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*/
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void sched_class(struct ksegrp *kg, int class);
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void sched_exit_ksegrp(struct ksegrp *kg, struct thread *childtd);
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void sched_fork_ksegrp(struct thread *td, struct ksegrp *child);
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void sched_nice(struct proc *p, int nice);
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/*
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* Threads are switched in and out, block on resources, have temporary
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* priorities inherited from their ksegs, and use up cpu time.
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*/
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void sched_exit_thread(struct thread *td, struct thread *child);
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void sched_fork_thread(struct thread *td, struct thread *child);
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fixpt_t sched_pctcpu(struct thread *td);
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void sched_prio(struct thread *td, u_char prio);
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void sched_lend_prio(struct thread *td, u_char prio);
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void sched_sleep(struct thread *td);
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void sched_switch(struct thread *td, struct thread *newtd, int flags);
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void sched_unlend_prio(struct thread *td, u_char prio);
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void sched_userret(struct thread *td);
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void sched_wakeup(struct thread *td);
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/*
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* Threads are moved on and off of run queues
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*/
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void sched_add(struct thread *td, int flags);
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void sched_clock(struct thread *td);
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void sched_rem(struct thread *td);
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/*
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* Binding makes cpu affinity permanent while pinning is used to temporarily
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* hold a thread on a particular CPU.
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*/
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void sched_bind(struct thread *td, int cpu);
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static __inline void sched_pin(void);
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void sched_unbind(struct thread *td);
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static __inline void sched_unpin(void);
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int sched_is_bound(struct thread *td);
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/*
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* These procedures tell the process data structure allocation code how
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* many bytes to actually allocate.
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*/
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int sched_sizeof_ksegrp(void);
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int sched_sizeof_proc(void);
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int sched_sizeof_thread(void);
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static __inline void
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sched_pin(void)
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{
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curthread->td_pinned++;
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}
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static __inline void
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sched_unpin(void)
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{
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curthread->td_pinned--;
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}
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/* temporarily here */
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void schedinit(void);
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void sched_init_concurrency(struct ksegrp *kg);
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void sched_set_concurrency(struct ksegrp *kg, int cuncurrency);
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void sched_schedinit(void);
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void sched_newproc(struct proc *p, struct ksegrp *kg, struct thread *td);
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void sched_thread_exit(struct thread *td);
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void sched_newthread(struct thread *td);
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#endif /* !_SYS_SCHED_H_ */
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