1 | /* $NetBSD: uvm_meter.c,v 1.65 2014/12/01 04:11:14 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1997 Charles D. Cranor and Washington University. |
5 | * Copyright (c) 1982, 1986, 1989, 1993 |
6 | * The Regents of the University of California. |
7 | * |
8 | * All rights reserved. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 |
35 | * from: Id: uvm_meter.c,v 1.1.2.1 1997/08/14 19:10:35 chuck Exp |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.65 2014/12/01 04:11:14 msaitoh Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/cpu.h> |
44 | #include <sys/proc.h> |
45 | #include <sys/kernel.h> |
46 | #include <sys/sysctl.h> |
47 | |
48 | #include <uvm/uvm.h> |
49 | #include <uvm/uvm_pdpolicy.h> |
50 | |
51 | /* |
52 | * maxslp: ???? XXXCDC |
53 | */ |
54 | |
55 | int maxslp = MAXSLP; /* patchable ... */ |
56 | struct loadavg averunnable; |
57 | |
58 | static void uvm_total(struct vmtotal *); |
59 | |
60 | /* |
61 | * sysctl helper routine for the vm.vmmeter node. |
62 | */ |
63 | static int |
64 | sysctl_vm_meter(SYSCTLFN_ARGS) |
65 | { |
66 | struct sysctlnode node; |
67 | struct vmtotal vmtotals; |
68 | |
69 | node = *rnode; |
70 | node.sysctl_data = &vmtotals; |
71 | uvm_total(&vmtotals); |
72 | |
73 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
74 | } |
75 | |
76 | /* |
77 | * sysctl helper routine for the vm.uvmexp node. |
78 | */ |
79 | static int |
80 | sysctl_vm_uvmexp(SYSCTLFN_ARGS) |
81 | { |
82 | struct sysctlnode node; |
83 | |
84 | node = *rnode; |
85 | if (oldlenp) |
86 | node.sysctl_size = min(*oldlenp, node.sysctl_size); |
87 | |
88 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
89 | } |
90 | |
91 | static int |
92 | sysctl_vm_uvmexp2(SYSCTLFN_ARGS) |
93 | { |
94 | struct sysctlnode node; |
95 | struct uvmexp_sysctl u; |
96 | int active, inactive; |
97 | CPU_INFO_ITERATOR cii; |
98 | struct cpu_info *ci; |
99 | |
100 | uvm_estimatepageable(&active, &inactive); |
101 | |
102 | memset(&u, 0, sizeof(u)); |
103 | |
104 | /* Entries here are in order of uvmexp_sysctl, not uvmexp */ |
105 | u.pagesize = uvmexp.pagesize; |
106 | u.pagemask = uvmexp.pagemask; |
107 | u.pageshift = uvmexp.pageshift; |
108 | u.npages = uvmexp.npages; |
109 | u.free = uvmexp.free; |
110 | u.active = active; |
111 | u.inactive = inactive; |
112 | u.paging = uvmexp.paging; |
113 | u.wired = uvmexp.wired; |
114 | u.zeropages = uvmexp.zeropages; |
115 | u.reserve_pagedaemon = uvmexp.reserve_pagedaemon; |
116 | u.reserve_kernel = uvmexp.reserve_kernel; |
117 | u.freemin = uvmexp.freemin; |
118 | u.freetarg = uvmexp.freetarg; |
119 | u.inactarg = 0; /* unused */ |
120 | u.wiredmax = uvmexp.wiredmax; |
121 | u.nswapdev = uvmexp.nswapdev; |
122 | u.swpages = uvmexp.swpages; |
123 | u.swpginuse = uvmexp.swpginuse; |
124 | u.swpgonly = uvmexp.swpgonly; |
125 | u.nswget = uvmexp.nswget; |
126 | u.cpuhit = uvmexp.cpuhit; |
127 | u.cpumiss = uvmexp.cpumiss; |
128 | for (CPU_INFO_FOREACH(cii, ci)) { |
129 | u.faults += ci->ci_data.cpu_nfault; |
130 | u.traps += ci->ci_data.cpu_ntrap; |
131 | u.intrs += ci->ci_data.cpu_nintr; |
132 | u.swtch += ci->ci_data.cpu_nswtch; |
133 | u.softs += ci->ci_data.cpu_nsoft; |
134 | u.syscalls += ci->ci_data.cpu_nsyscall; |
135 | } |
136 | u.pageins = uvmexp.pageins; |
137 | u.pgswapin = uvmexp.pgswapin; |
138 | u.pgswapout = uvmexp.pgswapout; |
139 | u.forks = uvmexp.forks; |
140 | u.forks_ppwait = uvmexp.forks_ppwait; |
141 | u.forks_sharevm = uvmexp.forks_sharevm; |
142 | u.pga_zerohit = uvmexp.pga_zerohit; |
143 | u.pga_zeromiss = uvmexp.pga_zeromiss; |
144 | u.zeroaborts = uvmexp.zeroaborts; |
145 | u.fltnoram = uvmexp.fltnoram; |
146 | u.fltnoanon = uvmexp.fltnoanon; |
147 | u.fltpgwait = uvmexp.fltpgwait; |
148 | u.fltpgrele = uvmexp.fltpgrele; |
149 | u.fltrelck = uvmexp.fltrelck; |
150 | u.fltrelckok = uvmexp.fltrelckok; |
151 | u.fltanget = uvmexp.fltanget; |
152 | u.fltanretry = uvmexp.fltanretry; |
153 | u.fltamcopy = uvmexp.fltamcopy; |
154 | u.fltnamap = uvmexp.fltnamap; |
155 | u.fltnomap = uvmexp.fltnomap; |
156 | u.fltlget = uvmexp.fltlget; |
157 | u.fltget = uvmexp.fltget; |
158 | u.flt_anon = uvmexp.flt_anon; |
159 | u.flt_acow = uvmexp.flt_acow; |
160 | u.flt_obj = uvmexp.flt_obj; |
161 | u.flt_prcopy = uvmexp.flt_prcopy; |
162 | u.flt_przero = uvmexp.flt_przero; |
163 | u.pdwoke = uvmexp.pdwoke; |
164 | u.pdrevs = uvmexp.pdrevs; |
165 | u.pdfreed = uvmexp.pdfreed; |
166 | u.pdscans = uvmexp.pdscans; |
167 | u.pdanscan = uvmexp.pdanscan; |
168 | u.pdobscan = uvmexp.pdobscan; |
169 | u.pdreact = uvmexp.pdreact; |
170 | u.pdbusy = uvmexp.pdbusy; |
171 | u.pdpageouts = uvmexp.pdpageouts; |
172 | u.pdpending = uvmexp.pdpending; |
173 | u.pddeact = uvmexp.pddeact; |
174 | u.anonpages = uvmexp.anonpages; |
175 | u.filepages = uvmexp.filepages; |
176 | u.execpages = uvmexp.execpages; |
177 | u.colorhit = uvmexp.colorhit; |
178 | u.colormiss = uvmexp.colormiss; |
179 | u.ncolors = uvmexp.ncolors; |
180 | |
181 | node = *rnode; |
182 | node.sysctl_data = &u; |
183 | node.sysctl_size = sizeof(u); |
184 | if (oldlenp) |
185 | node.sysctl_size = min(*oldlenp, node.sysctl_size); |
186 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
187 | } |
188 | |
189 | /* |
190 | * sysctl helper routine for uvm_pctparam. |
191 | */ |
192 | static int |
193 | uvm_sysctlpctparam(SYSCTLFN_ARGS) |
194 | { |
195 | int t, error; |
196 | struct sysctlnode node; |
197 | struct uvm_pctparam *pct; |
198 | |
199 | pct = rnode->sysctl_data; |
200 | t = pct->pct_pct; |
201 | |
202 | node = *rnode; |
203 | node.sysctl_data = &t; |
204 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
205 | if (error || newp == NULL) |
206 | return error; |
207 | |
208 | if (t < 0 || t > 100) |
209 | return EINVAL; |
210 | |
211 | error = uvm_pctparam_check(pct, t); |
212 | if (error) { |
213 | return error; |
214 | } |
215 | uvm_pctparam_set(pct, t); |
216 | |
217 | return (0); |
218 | } |
219 | |
220 | /* |
221 | * uvm_sysctl: sysctl hook into UVM system. |
222 | */ |
223 | SYSCTL_SETUP(sysctl_vm_setup, "sysctl vm subtree setup" ) |
224 | { |
225 | |
226 | sysctl_createv(clog, 0, NULL, NULL, |
227 | CTLFLAG_PERMANENT, |
228 | CTLTYPE_STRUCT, "vmmeter" , |
229 | SYSCTL_DESCR("Simple system-wide virtual memory " |
230 | "statistics" ), |
231 | sysctl_vm_meter, 0, NULL, sizeof(struct vmtotal), |
232 | CTL_VM, VM_METER, CTL_EOL); |
233 | sysctl_createv(clog, 0, NULL, NULL, |
234 | CTLFLAG_PERMANENT, |
235 | CTLTYPE_STRUCT, "loadavg" , |
236 | SYSCTL_DESCR("System load average history" ), |
237 | NULL, 0, &averunnable, sizeof(averunnable), |
238 | CTL_VM, VM_LOADAVG, CTL_EOL); |
239 | sysctl_createv(clog, 0, NULL, NULL, |
240 | CTLFLAG_PERMANENT, |
241 | CTLTYPE_STRUCT, "uvmexp" , |
242 | SYSCTL_DESCR("Detailed system-wide virtual memory " |
243 | "statistics" ), |
244 | sysctl_vm_uvmexp, 0, &uvmexp, sizeof(uvmexp), |
245 | CTL_VM, VM_UVMEXP, CTL_EOL); |
246 | sysctl_createv(clog, 0, NULL, NULL, |
247 | CTLFLAG_PERMANENT, |
248 | CTLTYPE_STRUCT, "uvmexp2" , |
249 | SYSCTL_DESCR("Detailed system-wide virtual memory " |
250 | "statistics (MI)" ), |
251 | sysctl_vm_uvmexp2, 0, NULL, 0, |
252 | CTL_VM, VM_UVMEXP2, CTL_EOL); |
253 | sysctl_createv(clog, 0, NULL, NULL, |
254 | CTLFLAG_PERMANENT, CTLTYPE_INT, "maxslp" , |
255 | SYSCTL_DESCR("Maximum process sleep time before being " |
256 | "swapped" ), |
257 | NULL, 0, &maxslp, 0, |
258 | CTL_VM, VM_MAXSLP, CTL_EOL); |
259 | sysctl_createv(clog, 0, NULL, NULL, |
260 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
261 | CTLTYPE_INT, "uspace" , |
262 | SYSCTL_DESCR("Number of bytes allocated for a kernel " |
263 | "stack" ), |
264 | NULL, USPACE, NULL, 0, |
265 | CTL_VM, VM_USPACE, CTL_EOL); |
266 | sysctl_createv(clog, 0, NULL, NULL, |
267 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
268 | CTLTYPE_BOOL, "idlezero" , |
269 | SYSCTL_DESCR("Whether try to zero pages in idle loop" ), |
270 | NULL, 0, &vm_page_zero_enable, 0, |
271 | CTL_VM, CTL_CREATE, CTL_EOL); |
272 | sysctl_createv(clog, 0, NULL, NULL, |
273 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
274 | CTLTYPE_LONG, "minaddress" , |
275 | SYSCTL_DESCR("Minimum user address" ), |
276 | NULL, VM_MIN_ADDRESS, NULL, 0, |
277 | CTL_VM, VM_MINADDRESS, CTL_EOL); |
278 | sysctl_createv(clog, 0, NULL, NULL, |
279 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
280 | CTLTYPE_LONG, "maxaddress" , |
281 | SYSCTL_DESCR("Maximum user address" ), |
282 | NULL, VM_MAX_ADDRESS, NULL, 0, |
283 | CTL_VM, VM_MAXADDRESS, CTL_EOL); |
284 | |
285 | uvmpdpol_sysctlsetup(); |
286 | } |
287 | |
288 | /* |
289 | * uvm_total: calculate the current state of the system. |
290 | */ |
291 | static void |
292 | uvm_total(struct vmtotal *totalp) |
293 | { |
294 | struct lwp *l; |
295 | #if 0 |
296 | struct vm_map_entry * entry; |
297 | struct vm_map *map; |
298 | int paging; |
299 | #endif |
300 | int active; |
301 | |
302 | memset(totalp, 0, sizeof *totalp); |
303 | |
304 | /* |
305 | * calculate process statistics |
306 | */ |
307 | mutex_enter(proc_lock); |
308 | LIST_FOREACH(l, &alllwp, l_list) { |
309 | if (l->l_proc->p_flag & PK_SYSTEM) |
310 | continue; |
311 | switch (l->l_stat) { |
312 | case 0: |
313 | continue; |
314 | |
315 | case LSSLEEP: |
316 | case LSSTOP: |
317 | if ((l->l_flag & LW_SINTR) == 0) { |
318 | totalp->t_dw++; |
319 | } else if (l->l_slptime < maxslp) { |
320 | totalp->t_sl++; |
321 | } |
322 | if (l->l_slptime >= maxslp) |
323 | continue; |
324 | break; |
325 | |
326 | case LSRUN: |
327 | case LSONPROC: |
328 | case LSIDL: |
329 | totalp->t_rq++; |
330 | if (l->l_stat == LSIDL) |
331 | continue; |
332 | break; |
333 | } |
334 | /* |
335 | * note active objects |
336 | */ |
337 | #if 0 |
338 | /* |
339 | * XXXCDC: BOGUS! rethink this. in the mean time |
340 | * don't do it. |
341 | */ |
342 | paging = 0; |
343 | vm_map_lock(map); |
344 | for (map = &p->p_vmspace->vm_map, entry = map->header.next; |
345 | entry != &map->header; entry = entry->next) { |
346 | if (entry->is_a_map || entry->is_sub_map || |
347 | entry->object.uvm_obj == NULL) |
348 | continue; |
349 | /* XXX how to do this with uvm */ |
350 | } |
351 | vm_map_unlock(map); |
352 | if (paging) |
353 | totalp->t_pw++; |
354 | #endif |
355 | } |
356 | mutex_exit(proc_lock); |
357 | |
358 | /* |
359 | * Calculate object memory usage statistics. |
360 | */ |
361 | uvm_estimatepageable(&active, NULL); |
362 | totalp->t_free = uvmexp.free; |
363 | totalp->t_vm = uvmexp.npages - uvmexp.free + uvmexp.swpginuse; |
364 | totalp->t_avm = active + uvmexp.swpginuse; /* XXX */ |
365 | totalp->t_rm = uvmexp.npages - uvmexp.free; |
366 | totalp->t_arm = active; |
367 | totalp->t_vmshr = 0; /* XXX */ |
368 | totalp->t_avmshr = 0; /* XXX */ |
369 | totalp->t_rmshr = 0; /* XXX */ |
370 | totalp->t_armshr = 0; /* XXX */ |
371 | } |
372 | |
373 | void |
374 | uvm_pctparam_set(struct uvm_pctparam *pct, int val) |
375 | { |
376 | |
377 | pct->pct_pct = val; |
378 | pct->pct_scaled = val * UVM_PCTPARAM_SCALE / 100; |
379 | } |
380 | |
381 | int |
382 | uvm_pctparam_get(struct uvm_pctparam *pct) |
383 | { |
384 | |
385 | return pct->pct_pct; |
386 | } |
387 | |
388 | int |
389 | uvm_pctparam_check(struct uvm_pctparam *pct, int val) |
390 | { |
391 | |
392 | if (pct->pct_check == NULL) { |
393 | return 0; |
394 | } |
395 | return (*pct->pct_check)(pct, val); |
396 | } |
397 | |
398 | void |
399 | uvm_pctparam_init(struct uvm_pctparam *pct, int val, |
400 | int (*fn)(struct uvm_pctparam *, int)) |
401 | { |
402 | |
403 | pct->pct_check = fn; |
404 | uvm_pctparam_set(pct, val); |
405 | } |
406 | |
407 | int |
408 | uvm_pctparam_createsysctlnode(struct uvm_pctparam *pct, const char *name, |
409 | const char *desc) |
410 | { |
411 | |
412 | return sysctl_createv(NULL, 0, NULL, NULL, |
413 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
414 | CTLTYPE_INT, name, SYSCTL_DESCR(desc), |
415 | uvm_sysctlpctparam, 0, (void *)pct, 0, CTL_VM, CTL_CREATE, CTL_EOL); |
416 | } |
417 | |