freebsd_sched.c revision 1.17 1 1.17 elad /* $NetBSD: freebsd_sched.c,v 1.17 2008/02/28 16:09:19 elad Exp $ */
2 1.1 gmcgarry
3 1.1 gmcgarry /*-
4 1.1 gmcgarry * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 1.1 gmcgarry * All rights reserved.
6 1.1 gmcgarry *
7 1.1 gmcgarry * This code is derived from software contributed to The NetBSD Foundation
8 1.1 gmcgarry * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 1.1 gmcgarry * NASA Ames Research Center; by Matthias Scheler.
10 1.1 gmcgarry *
11 1.1 gmcgarry * Redistribution and use in source and binary forms, with or without
12 1.1 gmcgarry * modification, are permitted provided that the following conditions
13 1.1 gmcgarry * are met:
14 1.1 gmcgarry * 1. Redistributions of source code must retain the above copyright
15 1.1 gmcgarry * notice, this list of conditions and the following disclaimer.
16 1.1 gmcgarry * 2. Redistributions in binary form must reproduce the above copyright
17 1.1 gmcgarry * notice, this list of conditions and the following disclaimer in the
18 1.1 gmcgarry * documentation and/or other materials provided with the distribution.
19 1.1 gmcgarry * 3. All advertising materials mentioning features or use of this software
20 1.1 gmcgarry * must display the following acknowledgement:
21 1.1 gmcgarry * This product includes software developed by the NetBSD
22 1.1 gmcgarry * Foundation, Inc. and its contributors.
23 1.1 gmcgarry * 4. Neither the name of The NetBSD Foundation nor the names of its
24 1.1 gmcgarry * contributors may be used to endorse or promote products derived
25 1.1 gmcgarry * from this software without specific prior written permission.
26 1.1 gmcgarry *
27 1.1 gmcgarry * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 1.1 gmcgarry * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 1.1 gmcgarry * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 1.1 gmcgarry * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 1.1 gmcgarry * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 1.1 gmcgarry * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 1.1 gmcgarry * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 1.1 gmcgarry * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 1.1 gmcgarry * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 1.1 gmcgarry * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 1.1 gmcgarry * POSSIBILITY OF SUCH DAMAGE.
38 1.1 gmcgarry */
39 1.1 gmcgarry
40 1.1 gmcgarry /*
41 1.1 gmcgarry * FreeBSD compatibility module. Try to deal with scheduler related syscalls.
42 1.1 gmcgarry */
43 1.1 gmcgarry
44 1.1 gmcgarry #include <sys/cdefs.h>
45 1.17 elad __KERNEL_RCSID(0, "$NetBSD: freebsd_sched.c,v 1.17 2008/02/28 16:09:19 elad Exp $");
46 1.1 gmcgarry
47 1.1 gmcgarry #include <sys/param.h>
48 1.1 gmcgarry #include <sys/mount.h>
49 1.1 gmcgarry #include <sys/proc.h>
50 1.1 gmcgarry #include <sys/systm.h>
51 1.1 gmcgarry #include <sys/syscallargs.h>
52 1.3 elad #include <sys/kauth.h>
53 1.1 gmcgarry
54 1.10 ad #include <sys/cpu.h>
55 1.1 gmcgarry
56 1.1 gmcgarry #include <compat/freebsd/freebsd_syscallargs.h>
57 1.1 gmcgarry #include <compat/freebsd/freebsd_sched.h>
58 1.1 gmcgarry
59 1.1 gmcgarry int
60 1.12 dsl freebsd_sys_yield(struct lwp *l, const void *v, register_t *retval)
61 1.1 gmcgarry {
62 1.1 gmcgarry
63 1.1 gmcgarry yield();
64 1.1 gmcgarry return 0;
65 1.1 gmcgarry }
66 1.1 gmcgarry
67 1.17 elad /*
68 1.17 elad * XXX: Needs adjustment to do a proper conversion.
69 1.17 elad */
70 1.17 elad static int
71 1.17 elad sched_freebsd2native(int freebsd_policy,
72 1.17 elad struct freebsd_sched_param *freebsd_params, int *native_policy,
73 1.17 elad struct sched_param *native_params)
74 1.17 elad {
75 1.17 elad int error;
76 1.17 elad
77 1.17 elad error = 0;
78 1.17 elad
79 1.17 elad switch (freebsd_policy) {
80 1.17 elad case FREEBSD_SCHED_OTHER:
81 1.17 elad *native_policy = SCHED_OTHER;
82 1.17 elad break;
83 1.17 elad
84 1.17 elad case FREEBSD_SCHED_FIFO:
85 1.17 elad *native_policy = SCHED_FIFO;
86 1.17 elad break;
87 1.17 elad
88 1.17 elad case FREEBSD_SCHED_RR:
89 1.17 elad *native_policy = SCHED_RR;
90 1.17 elad break;
91 1.17 elad
92 1.17 elad default:
93 1.17 elad error = EINVAL;
94 1.17 elad break;
95 1.17 elad }
96 1.17 elad
97 1.17 elad if (freebsd_params != NULL && native_params != NULL && !error) {
98 1.17 elad native_params = (struct sched_param *)freebsd_params;
99 1.17 elad }
100 1.17 elad
101 1.17 elad return (error)
102 1.17 elad }
103 1.17 elad
104 1.17 elad /*
105 1.17 elad * XXX: Needs adjustment to do a proper conversion.
106 1.17 elad */
107 1.17 elad static int
108 1.17 elad sched_native2freebsd(int native_policy, struct sched_param *native_params,
109 1.17 elad int *freebsd_policy, struct freebsd_sched_param *freebsd_params)
110 1.17 elad {
111 1.17 elad int error;
112 1.17 elad
113 1.17 elad error = 0;
114 1.17 elad
115 1.17 elad switch (native_policy) {
116 1.17 elad case SCHED_OTHER:
117 1.17 elad *freebsd_policy = FREEBSD_SCHED_OTHER;
118 1.17 elad break;
119 1.17 elad
120 1.17 elad case SCHED_FIFO:
121 1.17 elad *freebsd_policy = FREEBSD_SCHED_FIFO;
122 1.17 elad break;
123 1.17 elad
124 1.17 elad case SCHED_RR:
125 1.17 elad *freebsd_policy = FREEBSD_SCHED_RR;
126 1.17 elad break;
127 1.17 elad
128 1.17 elad default:
129 1.17 elad error = EINVAL;
130 1.17 elad break;
131 1.17 elad }
132 1.17 elad
133 1.17 elad if (native_params != NULL && freebsd_params != NULL && !error) {
134 1.17 elad freebsd_params = (struct freebsd_sched_param *)native_params;
135 1.17 elad }
136 1.17 elad
137 1.17 elad return (error)
138 1.17 elad }
139 1.17 elad
140 1.1 gmcgarry int
141 1.12 dsl freebsd_sys_sched_setparam(struct lwp *l, const struct freebsd_sys_sched_setparam_args *uap, register_t *retval)
142 1.1 gmcgarry {
143 1.12 dsl /* {
144 1.1 gmcgarry syscallarg(pid_t) pid;
145 1.1 gmcgarry syscallarg(const struct freebsd_sched_param *) sp;
146 1.12 dsl } */
147 1.17 elad int error, policy;
148 1.1 gmcgarry struct freebsd_sched_param lp;
149 1.17 elad struct sched_param sp;
150 1.1 gmcgarry
151 1.17 elad if (SCARG(uap, pid) < 0 || SCARG(uap, sp) == NULL) {
152 1.17 elad error = EINVAL;
153 1.17 elad goto out;
154 1.17 elad }
155 1.1 gmcgarry
156 1.1 gmcgarry error = copyin(SCARG(uap, sp), &lp, sizeof(lp));
157 1.1 gmcgarry if (error)
158 1.17 elad goto out;
159 1.17 elad
160 1.17 elad /* We need the current policy in FreeBSD terms. */
161 1.17 elad error = do_sched_getparam(SCARG(uap, pid), 0, &policy, NULL);
162 1.17 elad if (error)
163 1.17 elad goto out;
164 1.17 elad error = sched_native2freebsd(policy, NULL, &policy, NULL);
165 1.17 elad if (error)
166 1.17 elad goto out;
167 1.1 gmcgarry
168 1.17 elad error = sched_freebsd2native(policy, &lp, &policy, &sp);
169 1.17 elad if (error)
170 1.17 elad goto out;
171 1.17 elad
172 1.17 elad error = do_sched_setparam(SCARG(uap, pid), 0, policy, &sp);
173 1.17 elad if (error)
174 1.17 elad goto out;
175 1.1 gmcgarry
176 1.17 elad out:
177 1.13 elad return error;
178 1.1 gmcgarry }
179 1.1 gmcgarry
180 1.1 gmcgarry int
181 1.12 dsl freebsd_sys_sched_getparam(struct lwp *l, const struct freebsd_sys_sched_getparam_args *uap, register_t *retval)
182 1.1 gmcgarry {
183 1.12 dsl /* {
184 1.1 gmcgarry syscallarg(pid_t) pid;
185 1.1 gmcgarry syscallarg(struct freebsd_sched_param *) sp;
186 1.12 dsl } */
187 1.1 gmcgarry struct freebsd_sched_param lp;
188 1.17 elad struct sched_param sp;
189 1.8 dsl int error;
190 1.1 gmcgarry
191 1.17 elad if (SCARG(uap, pid) < 0 || SCARG(uap, sp) == NULL) {
192 1.17 elad error = EINVAL;
193 1.17 elad goto out;
194 1.17 elad }
195 1.17 elad
196 1.17 elad error = do_sched_getparam(SCARG(uap, pid), 0, NULL, &sp);
197 1.17 elad if (error)
198 1.17 elad goto out;
199 1.1 gmcgarry
200 1.17 elad error = sched_native2freebsd(0, &sp, NULL, &lp);
201 1.17 elad if (error)
202 1.17 elad goto out;
203 1.13 elad
204 1.17 elad error = copyout(&lp, SCARG(uap, sp), sizeof(lp));
205 1.8 dsl if (error)
206 1.17 elad goto out;
207 1.1 gmcgarry
208 1.17 elad out:
209 1.17 elad return (error);
210 1.1 gmcgarry }
211 1.1 gmcgarry
212 1.1 gmcgarry int
213 1.12 dsl freebsd_sys_sched_setscheduler(struct lwp *l, const struct freebsd_sys_sched_setscheduler_args *uap, register_t *retval)
214 1.1 gmcgarry {
215 1.12 dsl /* {
216 1.1 gmcgarry syscallarg(pid_t) pid;
217 1.1 gmcgarry syscallarg(int) policy;
218 1.1 gmcgarry syscallarg(cont struct freebsd_sched_scheduler *) sp;
219 1.12 dsl } */
220 1.17 elad int error, policy;
221 1.1 gmcgarry struct freebsd_sched_param lp;
222 1.17 elad struct sched_param sp;
223 1.1 gmcgarry
224 1.17 elad if (SCARG(uap, pid) < 0 || SCARG(uap, sp) == NULL) {
225 1.17 elad error = EINVAL;
226 1.17 elad goto out;
227 1.17 elad }
228 1.1 gmcgarry
229 1.1 gmcgarry error = copyin(SCARG(uap, sp), &lp, sizeof(lp));
230 1.1 gmcgarry if (error)
231 1.17 elad goto out;
232 1.1 gmcgarry
233 1.17 elad error = sched_freebsd2native(SCARG(uap, policy), &lp, &policy, &sp);
234 1.17 elad if (error)
235 1.17 elad goto out;
236 1.13 elad
237 1.17 elad error = do_sched_setparam(SCARG(uap, pid), 0, policy, &sp);
238 1.8 dsl if (error)
239 1.17 elad goto out;
240 1.1 gmcgarry
241 1.17 elad out:
242 1.17 elad return error;
243 1.1 gmcgarry }
244 1.1 gmcgarry
245 1.1 gmcgarry int
246 1.12 dsl freebsd_sys_sched_getscheduler(struct lwp *l, const struct freebsd_sys_sched_getscheduler_args *uap, register_t *retval)
247 1.1 gmcgarry {
248 1.12 dsl /* {
249 1.1 gmcgarry syscallarg(pid_t) pid;
250 1.12 dsl } */
251 1.17 elad int error, policy;
252 1.1 gmcgarry
253 1.1 gmcgarry *retval = -1;
254 1.1 gmcgarry
255 1.17 elad error = do_sched_getparam(l, SCARG(uap, pid), 0, &policy, NULL);
256 1.17 elad if (error)
257 1.17 elad goto out;
258 1.1 gmcgarry
259 1.17 elad error = sched_native2freebsd(policy, NULL, &policy, NULL);
260 1.8 dsl if (error)
261 1.17 elad goto out;
262 1.17 elad
263 1.17 elad *retval = policy;
264 1.1 gmcgarry
265 1.17 elad out:
266 1.17 elad return error;
267 1.1 gmcgarry }
268 1.1 gmcgarry
269 1.1 gmcgarry int
270 1.12 dsl freebsd_sys_sched_yield(struct lwp *l, const void *v, register_t *retval)
271 1.1 gmcgarry {
272 1.1 gmcgarry
273 1.1 gmcgarry yield();
274 1.1 gmcgarry return 0;
275 1.1 gmcgarry }
276 1.1 gmcgarry
277 1.1 gmcgarry int
278 1.12 dsl freebsd_sys_sched_get_priority_max(struct lwp *l, const struct freebsd_sys_sched_get_priority_max_args *uap, register_t *retval)
279 1.1 gmcgarry {
280 1.12 dsl /* {
281 1.1 gmcgarry syscallarg(int) policy;
282 1.12 dsl } */
283 1.1 gmcgarry
284 1.1 gmcgarry /*
285 1.1 gmcgarry * We can't emulate anything put the default scheduling policy.
286 1.1 gmcgarry */
287 1.1 gmcgarry if (SCARG(uap, policy) != FREEBSD_SCHED_OTHER) {
288 1.1 gmcgarry *retval = -1;
289 1.1 gmcgarry return EINVAL;
290 1.1 gmcgarry }
291 1.1 gmcgarry
292 1.1 gmcgarry *retval = 0;
293 1.1 gmcgarry return 0;
294 1.1 gmcgarry }
295 1.1 gmcgarry
296 1.1 gmcgarry int
297 1.12 dsl freebsd_sys_sched_get_priority_min(struct lwp *l, const struct freebsd_sys_sched_get_priority_min_args *uap, register_t *retval)
298 1.1 gmcgarry {
299 1.12 dsl /* {
300 1.1 gmcgarry syscallarg(int) policy;
301 1.12 dsl } */
302 1.1 gmcgarry
303 1.1 gmcgarry /*
304 1.1 gmcgarry * We can't emulate anything put the default scheduling policy.
305 1.1 gmcgarry */
306 1.1 gmcgarry if (SCARG(uap, policy) != FREEBSD_SCHED_OTHER) {
307 1.1 gmcgarry *retval = -1;
308 1.1 gmcgarry return EINVAL;
309 1.1 gmcgarry }
310 1.1 gmcgarry
311 1.1 gmcgarry *retval = 0;
312 1.1 gmcgarry return 0;
313 1.1 gmcgarry }
314