2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1996, 1997, 1998
5 * HD Associates, Inc. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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16 * must display the following acknowledgement:
17 * This product includes software developed by HD Associates, Inc
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35 /* p1003_1b: Real Time common code.
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include "opt_posix.h"
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
47 #include <sys/module.h>
48 #include <sys/mutex.h>
51 #include <sys/posix4.h>
52 #include <sys/syscallsubr.h>
53 #include <sys/sysctl.h>
54 #include <sys/syslog.h>
55 #include <sys/sysproto.h>
57 MALLOC_DEFINE(M_P31B, "p1003.1b", "Posix 1003.1B");
59 /* The system calls return ENOSYS if an entry is called that is not run-time
60 * supported. I am also logging since some programs start to use this when
61 * they shouldn't. That will be removed if annoying.
64 syscall_not_present(struct thread *td, const char *s, struct nosys_args *uap)
66 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
67 td->td_name, td->td_proc->p_pid, s);
69 /* a " return nosys(p, uap); " here causes a core dump.
75 #if !defined(_KPOSIX_PRIORITY_SCHEDULING)
77 /* Not configured but loadable via a module:
86 SYSCALL_NOT_PRESENT_GEN(sched_setparam)
87 SYSCALL_NOT_PRESENT_GEN(sched_getparam)
88 SYSCALL_NOT_PRESENT_GEN(sched_setscheduler)
89 SYSCALL_NOT_PRESENT_GEN(sched_getscheduler)
90 SYSCALL_NOT_PRESENT_GEN(sched_yield)
91 SYSCALL_NOT_PRESENT_GEN(sched_get_priority_max)
92 SYSCALL_NOT_PRESENT_GEN(sched_get_priority_min)
93 SYSCALL_NOT_PRESENT_GEN(sched_rr_get_interval)
96 /* Configured in kernel version:
98 static struct ksched *ksched;
103 int ret = ksched_attach(&ksched);
106 p31b_setcfg(CTL_P1003_1B_PRIORITY_SCHEDULING, 200112L);
112 sys_sched_setparam(struct thread *td, struct sched_setparam_args *uap)
114 struct thread *targettd;
115 struct proc *targetp;
117 struct sched_param sched_param;
119 e = copyin(uap->param, &sched_param, sizeof(sched_param));
124 targetp = td->td_proc;
128 targetp = pfind(uap->pid);
131 targettd = FIRST_THREAD_IN_PROC(targetp);
134 e = kern_sched_setparam(td, targettd, &sched_param);
135 PROC_UNLOCK(targetp);
140 kern_sched_setparam(struct thread *td, struct thread *targettd,
141 struct sched_param *param)
143 struct proc *targetp;
146 targetp = targettd->td_proc;
147 PROC_LOCK_ASSERT(targetp, MA_OWNED);
149 error = p_cansched(td, targetp);
151 error = ksched_setparam(ksched, targettd,
152 (const struct sched_param *)param);
157 sys_sched_getparam(struct thread *td, struct sched_getparam_args *uap)
160 struct sched_param sched_param;
161 struct thread *targettd;
162 struct proc *targetp;
165 targetp = td->td_proc;
169 targetp = pfind(uap->pid);
170 if (targetp == NULL) {
173 targettd = FIRST_THREAD_IN_PROC(targetp);
176 e = kern_sched_getparam(td, targettd, &sched_param);
177 PROC_UNLOCK(targetp);
179 e = copyout(&sched_param, uap->param, sizeof(sched_param));
184 kern_sched_getparam(struct thread *td, struct thread *targettd,
185 struct sched_param *param)
187 struct proc *targetp;
190 targetp = targettd->td_proc;
191 PROC_LOCK_ASSERT(targetp, MA_OWNED);
193 error = p_cansee(td, targetp);
195 error = ksched_getparam(ksched, targettd, param);
200 sys_sched_setscheduler(struct thread *td, struct sched_setscheduler_args *uap)
203 struct sched_param sched_param;
204 struct thread *targettd;
205 struct proc *targetp;
207 e = copyin(uap->param, &sched_param, sizeof(sched_param));
212 targetp = td->td_proc;
216 targetp = pfind(uap->pid);
219 targettd = FIRST_THREAD_IN_PROC(targetp);
222 e = kern_sched_setscheduler(td, targettd, uap->policy,
224 PROC_UNLOCK(targetp);
229 kern_sched_setscheduler(struct thread *td, struct thread *targettd,
230 int policy, struct sched_param *param)
232 struct proc *targetp;
235 targetp = targettd->td_proc;
236 PROC_LOCK_ASSERT(targetp, MA_OWNED);
238 /* Don't allow non root user to set a scheduler policy. */
239 error = priv_check(td, PRIV_SCHED_SET);
243 error = p_cansched(td, targetp);
245 error = ksched_setscheduler(ksched, targettd, policy,
246 (const struct sched_param *)param);
251 sys_sched_getscheduler(struct thread *td, struct sched_getscheduler_args *uap)
254 struct thread *targettd;
255 struct proc *targetp;
258 targetp = td->td_proc;
262 targetp = pfind(uap->pid);
265 targettd = FIRST_THREAD_IN_PROC(targetp);
268 e = kern_sched_getscheduler(td, targettd, &policy);
269 PROC_UNLOCK(targetp);
271 td->td_retval[0] = policy;
277 kern_sched_getscheduler(struct thread *td, struct thread *targettd,
280 struct proc *targetp;
283 targetp = targettd->td_proc;
284 PROC_LOCK_ASSERT(targetp, MA_OWNED);
286 error = p_cansee(td, targetp);
288 error = ksched_getscheduler(ksched, targettd, policy);
293 sys_sched_yield(struct thread *td, struct sched_yield_args *uap)
296 sched_relinquish(td);
301 sys_sched_get_priority_max(struct thread *td,
302 struct sched_get_priority_max_args *uap)
306 error = ksched_get_priority_max(ksched, uap->policy, &prio);
307 td->td_retval[0] = prio;
312 sys_sched_get_priority_min(struct thread *td,
313 struct sched_get_priority_min_args *uap)
317 error = ksched_get_priority_min(ksched, uap->policy, &prio);
318 td->td_retval[0] = prio;
323 sys_sched_rr_get_interval(struct thread *td,
324 struct sched_rr_get_interval_args *uap)
326 struct timespec timespec;
329 error = kern_sched_rr_get_interval(td, uap->pid, ×pec);
331 error = copyout(×pec, uap->interval, sizeof(timespec));
336 kern_sched_rr_get_interval(struct thread *td, pid_t pid,
340 struct thread *targettd;
341 struct proc *targetp;
345 targetp = td->td_proc;
348 targetp = pfind(pid);
351 targettd = FIRST_THREAD_IN_PROC(targetp);
354 e = kern_sched_rr_get_interval_td(td, targettd, ts);
355 PROC_UNLOCK(targetp);
360 kern_sched_rr_get_interval_td(struct thread *td, struct thread *targettd,
366 p = targettd->td_proc;
367 PROC_LOCK_ASSERT(p, MA_OWNED);
369 error = p_cansee(td, p);
371 error = ksched_rr_get_interval(ksched, targettd, ts);
377 p31binit(void *notused)
379 (void) sched_attach();
380 p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE);
383 SYSINIT(p31b, SI_SUB_P1003_1B, SI_ORDER_FIRST, p31binit, NULL);