2 * Copyright (c) 1996, 1997, 1998
3 * HD Associates, Inc. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by HD Associates, Inc
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 /* p1003_1b: Real Time common code.
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include "opt_posix.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
45 #include <sys/module.h>
46 #include <sys/mutex.h>
49 #include <sys/posix4.h>
50 #include <sys/syscallsubr.h>
51 #include <sys/sysctl.h>
52 #include <sys/sysent.h>
53 #include <sys/syslog.h>
54 #include <sys/sysproto.h>
56 MALLOC_DEFINE(M_P31B, "p1003.1b", "Posix 1003.1B");
58 /* The system calls return ENOSYS if an entry is called that is
59 * not run-time supported. I am also logging since some programs
60 * start to use this when they shouldn't. That will be removed if annoying.
63 syscall_not_present(struct thread *td, const char *s, struct nosys_args *uap)
65 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
66 td->td_proc->p_comm, td->td_proc->p_pid, s);
68 /* a " return nosys(p, uap); " here causes a core dump.
74 #if !defined(_KPOSIX_PRIORITY_SCHEDULING)
76 /* Not configured but loadable via a module:
85 SYSCALL_NOT_PRESENT_GEN(sched_setparam)
86 SYSCALL_NOT_PRESENT_GEN(sched_getparam)
87 SYSCALL_NOT_PRESENT_GEN(sched_setscheduler)
88 SYSCALL_NOT_PRESENT_GEN(sched_getscheduler)
89 SYSCALL_NOT_PRESENT_GEN(sched_yield)
90 SYSCALL_NOT_PRESENT_GEN(sched_get_priority_max)
91 SYSCALL_NOT_PRESENT_GEN(sched_get_priority_min)
92 SYSCALL_NOT_PRESENT_GEN(sched_rr_get_interval)
95 /* Configured in kernel version:
97 static struct ksched *ksched;
102 int ret = ksched_attach(&ksched);
105 p31b_setcfg(CTL_P1003_1B_PRIORITY_SCHEDULING, 1);
114 sched_setparam(struct thread *td, struct sched_setparam_args *uap)
116 struct thread *targettd;
117 struct proc *targetp;
119 struct sched_param sched_param;
121 e = copyin(uap->param, &sched_param, sizeof(sched_param));
126 targetp = td->td_proc;
130 targetp = pfind(uap->pid);
133 targettd = FIRST_THREAD_IN_PROC(targetp);
136 e = p_cansched(td, targetp);
138 e = ksched_setparam(ksched, targettd,
139 (const struct sched_param *)&sched_param);
141 PROC_UNLOCK(targetp);
149 sched_getparam(struct thread *td, struct sched_getparam_args *uap)
152 struct sched_param sched_param;
153 struct thread *targettd;
154 struct proc *targetp;
157 targetp = td->td_proc;
161 targetp = pfind(uap->pid);
162 if (targetp == NULL) {
165 targettd = FIRST_THREAD_IN_PROC(targetp); /* XXXKSE */
168 e = p_cansee(td, targetp);
170 e = ksched_getparam(ksched, targettd, &sched_param);
172 PROC_UNLOCK(targetp);
174 e = copyout(&sched_param, uap->param, sizeof(sched_param));
182 sched_setscheduler(struct thread *td, struct sched_setscheduler_args *uap)
185 struct sched_param sched_param;
186 struct thread *targettd;
187 struct proc *targetp;
189 /* Don't allow non root user to set a scheduler policy. */
190 e = priv_check(td, PRIV_SCHED_SET);
194 e = copyin(uap->param, &sched_param, sizeof(sched_param));
199 targetp = td->td_proc;
203 targetp = pfind(uap->pid);
206 targettd = FIRST_THREAD_IN_PROC(targetp);
209 e = p_cansched(td, targetp);
211 e = ksched_setscheduler(ksched, targettd,
212 uap->policy, (const struct sched_param *)&sched_param);
214 PROC_UNLOCK(targetp);
222 sched_getscheduler(struct thread *td, struct sched_getscheduler_args *uap)
225 struct thread *targettd;
226 struct proc *targetp;
229 targetp = td->td_proc;
233 targetp = pfind(uap->pid);
234 if (targetp == NULL) {
238 targettd = FIRST_THREAD_IN_PROC(targetp); /* XXXKSE */
241 e = p_cansee(td, targetp);
243 e = ksched_getscheduler(ksched, targettd, &policy);
244 td->td_retval[0] = policy;
246 PROC_UNLOCK(targetp);
256 sched_yield(struct thread *td, struct sched_yield_args *uap)
259 return (ksched_yield(ksched));
266 sched_get_priority_max(struct thread *td,
267 struct sched_get_priority_max_args *uap)
271 error = ksched_get_priority_max(ksched, uap->policy, &prio);
272 td->td_retval[0] = prio;
280 sched_get_priority_min(struct thread *td,
281 struct sched_get_priority_min_args *uap)
285 error = ksched_get_priority_min(ksched, uap->policy, &prio);
286 td->td_retval[0] = prio;
294 sched_rr_get_interval(struct thread *td,
295 struct sched_rr_get_interval_args *uap)
297 struct timespec timespec;
300 error = kern_sched_rr_get_interval(td, uap->pid, ×pec);
302 error = copyout(×pec, uap->interval, sizeof(timespec));
307 kern_sched_rr_get_interval(struct thread *td, pid_t pid,
311 struct thread *targettd;
312 struct proc *targetp;
316 targetp = td->td_proc;
319 targetp = td->td_proc;
321 targettd = thread_find(targetp, pid);
322 if (targettd == NULL) {
323 PROC_UNLOCK(targetp);
328 e = p_cansee(td, targetp);
330 e = ksched_rr_get_interval(ksched, targettd, ts);
331 PROC_UNLOCK(targetp);
338 p31binit(void *notused)
340 (void) sched_attach();
341 p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE);
344 SYSINIT(p31b, SI_SUB_P1003_1B, SI_ORDER_FIRST, p31binit, NULL);