1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/lock.h>
36 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38 #include <sys/proc.h>
39 #include <sys/resource.h>
40 #include <sys/rwlock.h>
41 #include <sys/sx.h>
42 #include <sys/vmmeter.h>
43 #include <sys/smp.h>
44
45 #include <vm/vm.h>
46 #include <vm/vm_page.h>
47 #include <vm/vm_extern.h>
48 #include <vm/vm_param.h>
49 #include <vm/vm_phys.h>
50 #include <vm/vm_pagequeue.h>
51 #include <vm/pmap.h>
52 #include <vm/vm_map.h>
53 #include <vm/vm_object.h>
54 #include <sys/sysctl.h>
55
56 struct vmmeter __read_mostly vm_cnt = {
57 .v_swtch = EARLY_COUNTER,
58 .v_trap = EARLY_COUNTER,
59 .v_syscall = EARLY_COUNTER,
60 .v_intr = EARLY_COUNTER,
61 .v_soft = EARLY_COUNTER,
62 .v_vm_faults = EARLY_COUNTER,
63 .v_io_faults = EARLY_COUNTER,
64 .v_cow_faults = EARLY_COUNTER,
65 .v_cow_optim = EARLY_COUNTER,
66 .v_zfod = EARLY_COUNTER,
67 .v_ozfod = EARLY_COUNTER,
68 .v_swapin = EARLY_COUNTER,
69 .v_swapout = EARLY_COUNTER,
70 .v_swappgsin = EARLY_COUNTER,
71 .v_swappgsout = EARLY_COUNTER,
72 .v_vnodein = EARLY_COUNTER,
73 .v_vnodeout = EARLY_COUNTER,
74 .v_vnodepgsin = EARLY_COUNTER,
75 .v_vnodepgsout = EARLY_COUNTER,
76 .v_intrans = EARLY_COUNTER,
77 .v_reactivated = EARLY_COUNTER,
78 .v_pdwakeups = EARLY_COUNTER,
79 .v_pdpages = EARLY_COUNTER,
80 .v_pdshortfalls = EARLY_COUNTER,
81 .v_dfree = EARLY_COUNTER,
82 .v_pfree = EARLY_COUNTER,
83 .v_tfree = EARLY_COUNTER,
84 .v_forks = EARLY_COUNTER,
85 .v_vforks = EARLY_COUNTER,
86 .v_rforks = EARLY_COUNTER,
87 .v_kthreads = EARLY_COUNTER,
88 .v_forkpages = EARLY_COUNTER,
89 .v_vforkpages = EARLY_COUNTER,
90 .v_rforkpages = EARLY_COUNTER,
91 .v_kthreadpages = EARLY_COUNTER,
92 .v_wire_count = EARLY_COUNTER,
93 };
94
95 u_long __exclusive_cache_line vm_user_wire_count;
96
97 static void
vmcounter_startup(void)98 vmcounter_startup(void)
99 {
100 counter_u64_t *cnt = (counter_u64_t *)&vm_cnt;
101
102 COUNTER_ARRAY_ALLOC(cnt, VM_METER_NCOUNTERS, M_WAITOK);
103 }
104 SYSINIT(counter, SI_SUB_KMEM, SI_ORDER_FIRST, vmcounter_startup, NULL);
105
106 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
107 CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold");
108 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
109 CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages");
110 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
111 CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock");
112 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
113 CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive");
114 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
115 CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel");
116 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
117 CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point");
118
119 static int
sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS)120 sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS)
121 {
122
123 #ifdef SCTL_MASK32
124 uint32_t la[4];
125
126 if (req->flags & SCTL_MASK32) {
127 la[0] = averunnable.ldavg[0];
128 la[1] = averunnable.ldavg[1];
129 la[2] = averunnable.ldavg[2];
130 la[3] = averunnable.fscale;
131 return SYSCTL_OUT(req, la, sizeof(la));
132 } else
133 #endif
134 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable));
135 }
136 SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD |
137 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg",
138 "Machine loadaverage history");
139
140 #if defined(COMPAT_FREEBSD11)
141 struct vmtotal11 {
142 int16_t t_rq;
143 int16_t t_dw;
144 int16_t t_pw;
145 int16_t t_sl;
146 int16_t t_sw;
147 int32_t t_vm;
148 int32_t t_avm;
149 int32_t t_rm;
150 int32_t t_arm;
151 int32_t t_vmshr;
152 int32_t t_avmshr;
153 int32_t t_rmshr;
154 int32_t t_armshr;
155 int32_t t_free;
156 };
157 #endif
158
159 static int
vmtotal(SYSCTL_HANDLER_ARGS)160 vmtotal(SYSCTL_HANDLER_ARGS)
161 {
162 struct vmtotal total;
163 #if defined(COMPAT_FREEBSD11)
164 struct vmtotal11 total11;
165 #endif
166 vm_object_t object;
167 struct proc *p;
168 struct thread *td;
169
170 if (req->oldptr == NULL) {
171 #if defined(COMPAT_FREEBSD11)
172 if (curproc->p_osrel < P_OSREL_VMTOTAL64)
173 return (SYSCTL_OUT(req, NULL, sizeof(total11)));
174 #endif
175 return (SYSCTL_OUT(req, NULL, sizeof(total)));
176 }
177 bzero(&total, sizeof(total));
178
179 /*
180 * Calculate process statistics.
181 */
182 sx_slock(&allproc_lock);
183 FOREACH_PROC_IN_SYSTEM(p) {
184 if ((p->p_flag & P_SYSTEM) != 0)
185 continue;
186 PROC_LOCK(p);
187 if (p->p_state != PRS_NEW) {
188 FOREACH_THREAD_IN_PROC(p, td) {
189 thread_lock(td);
190 switch (TD_GET_STATE(td)) {
191 case TDS_INHIBITED:
192 if (TD_IS_SLEEPING(td)) {
193 if (td->td_priority <= PZERO)
194 total.t_dw++;
195 else
196 total.t_sl++;
197 }
198 break;
199 case TDS_CAN_RUN:
200 total.t_sw++;
201 break;
202 case TDS_RUNQ:
203 case TDS_RUNNING:
204 total.t_rq++;
205 break;
206 default:
207 break;
208 }
209 thread_unlock(td);
210 }
211 }
212 PROC_UNLOCK(p);
213 }
214 sx_sunlock(&allproc_lock);
215 /*
216 * Calculate object memory usage statistics.
217 */
218 mtx_lock(&vm_object_list_mtx);
219 TAILQ_FOREACH(object, &vm_object_list, object_list) {
220 /*
221 * Perform unsynchronized reads on the object. In
222 * this case, the lack of synchronization should not
223 * impair the accuracy of the reported statistics.
224 */
225 if ((object->flags & OBJ_FICTITIOUS) != 0) {
226 /*
227 * Devices, like /dev/mem, will badly skew our totals.
228 */
229 continue;
230 }
231 if (object->ref_count == 0) {
232 /*
233 * Also skip unreferenced objects, including
234 * vnodes representing mounted file systems.
235 */
236 continue;
237 }
238 if (object->ref_count == 1 &&
239 (object->flags & (OBJ_ANON | OBJ_SWAP)) == OBJ_SWAP) {
240 /*
241 * Also skip otherwise unreferenced swap
242 * objects backing tmpfs vnodes, and POSIX or
243 * SysV shared memory.
244 */
245 continue;
246 }
247 total.t_vm += object->size;
248 total.t_rm += object->resident_page_count;
249 if (vm_object_is_active(object)) {
250 total.t_avm += object->size;
251 total.t_arm += object->resident_page_count;
252 }
253 if (object->shadow_count > 1) {
254 /* shared object */
255 total.t_vmshr += object->size;
256 total.t_rmshr += object->resident_page_count;
257 if (vm_object_is_active(object)) {
258 total.t_avmshr += object->size;
259 total.t_armshr += object->resident_page_count;
260 }
261 }
262 }
263 mtx_unlock(&vm_object_list_mtx);
264 total.t_pw = vm_wait_count();
265 total.t_free = vm_free_count();
266 #if defined(COMPAT_FREEBSD11)
267 /* sysctl(8) allocates twice as much memory as reported by sysctl(3) */
268 if (curproc->p_osrel < P_OSREL_VMTOTAL64 && (req->oldlen ==
269 sizeof(total11) || req->oldlen == 2 * sizeof(total11))) {
270 bzero(&total11, sizeof(total11));
271 total11.t_rq = total.t_rq;
272 total11.t_dw = total.t_dw;
273 total11.t_pw = total.t_pw;
274 total11.t_sl = total.t_sl;
275 total11.t_sw = total.t_sw;
276 total11.t_vm = total.t_vm; /* truncate */
277 total11.t_avm = total.t_avm; /* truncate */
278 total11.t_rm = total.t_rm; /* truncate */
279 total11.t_arm = total.t_arm; /* truncate */
280 total11.t_vmshr = total.t_vmshr; /* truncate */
281 total11.t_avmshr = total.t_avmshr; /* truncate */
282 total11.t_rmshr = total.t_rmshr; /* truncate */
283 total11.t_armshr = total.t_armshr; /* truncate */
284 total11.t_free = total.t_free; /* truncate */
285 return (SYSCTL_OUT(req, &total11, sizeof(total11)));
286 }
287 #endif
288 return (SYSCTL_OUT(req, &total, sizeof(total)));
289 }
290
291 SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE | CTLFLAG_RD |
292 CTLFLAG_MPSAFE, NULL, 0, vmtotal, "S,vmtotal",
293 "System virtual memory statistics");
294 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
295 "VM meter stats");
296 static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
297 "VM meter sys stats");
298 static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
299 "VM meter vm stats");
300 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
301 "VM meter misc stats");
302
303 static int
sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS)304 sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS)
305 {
306 uint64_t val;
307 #ifdef COMPAT_FREEBSD11
308 uint32_t val32;
309 #endif
310
311 val = counter_u64_fetch(*(counter_u64_t *)arg1);
312 #ifdef COMPAT_FREEBSD11
313 if (req->oldlen == sizeof(val32)) {
314 val32 = val; /* truncate */
315 return (SYSCTL_OUT(req, &val32, sizeof(val32)));
316 }
317 #endif
318 return (SYSCTL_OUT(req, &val, sizeof(val)));
319 }
320
321 #define VM_STATS(parent, var, descr) \
322 SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \
323 CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr)
324 #define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr)
325 #define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr)
326
327 VM_STATS_SYS(v_swtch, "Context switches");
328 VM_STATS_SYS(v_trap, "Traps");
329 VM_STATS_SYS(v_syscall, "System calls");
330 VM_STATS_SYS(v_intr, "Device interrupts");
331 VM_STATS_SYS(v_soft, "Software interrupts");
332 VM_STATS_VM(v_vm_faults, "Address memory faults");
333 VM_STATS_VM(v_io_faults, "Page faults requiring I/O");
334 VM_STATS_VM(v_cow_faults, "Copy-on-write faults");
335 VM_STATS_VM(v_cow_optim, "Optimized COW faults");
336 VM_STATS_VM(v_zfod, "Pages zero-filled on demand");
337 VM_STATS_VM(v_ozfod, "Optimized zero fill pages");
338 VM_STATS_VM(v_swapin, "Swap pager pageins");
339 VM_STATS_VM(v_swapout, "Swap pager pageouts");
340 VM_STATS_VM(v_swappgsin, "Swap pages swapped in");
341 VM_STATS_VM(v_swappgsout, "Swap pages swapped out");
342 VM_STATS_VM(v_vnodein, "Vnode pager pageins");
343 VM_STATS_VM(v_vnodeout, "Vnode pager pageouts");
344 VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in");
345 VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out");
346 VM_STATS_VM(v_intrans, "In transit page faults");
347 VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon");
348 VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups");
349 VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls");
350 VM_STATS_VM(v_dfree, "Pages freed by pagedaemon");
351 VM_STATS_VM(v_pfree, "Pages freed by exiting processes");
352 VM_STATS_VM(v_tfree, "Total pages freed");
353 VM_STATS_VM(v_forks, "Number of fork() calls");
354 VM_STATS_VM(v_vforks, "Number of vfork() calls");
355 VM_STATS_VM(v_rforks, "Number of rfork() calls");
356 VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel");
357 VM_STATS_VM(v_forkpages, "VM pages affected by fork()");
358 VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()");
359 VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()");
360 VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel");
361
362 static int
sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS)363 sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS)
364 {
365 u_int (*fn)(void);
366 uint32_t val;
367
368 fn = arg1;
369 val = fn();
370 return (SYSCTL_OUT(req, &val, sizeof(val)));
371 }
372
373 #define VM_STATS_PROC(var, descr, fn) \
374 SYSCTL_OID(_vm_stats_vm, OID_AUTO, var, CTLTYPE_U32 | CTLFLAG_MPSAFE | \
375 CTLFLAG_RD, fn, 0, sysctl_handle_vmstat_proc, "IU", descr)
376
377 #define VM_STATS_UINT(var, descr) \
378 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr)
379 #define VM_STATS_ULONG(var, descr) \
380 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr)
381
382 VM_STATS_UINT(v_page_size, "Page size in bytes");
383 VM_STATS_UINT(v_page_count, "Total number of pages in system");
384 VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock");
385 VM_STATS_UINT(v_free_target, "Pages desired free");
386 VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold");
387 VM_STATS_PROC(v_free_count, "Free pages", vm_free_count);
388 VM_STATS_PROC(v_wire_count, "Wired pages", vm_wire_count);
389 VM_STATS_PROC(v_active_count, "Active pages", vm_active_count);
390 VM_STATS_UINT(v_inactive_target, "Desired inactive pages");
391 VM_STATS_PROC(v_inactive_count, "Inactive pages", vm_inactive_count);
392 VM_STATS_PROC(v_laundry_count, "Pages eligible for laundering",
393 vm_laundry_count);
394 VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel");
395 VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code");
396 VM_STATS_UINT(v_free_severe, "Severe page depletion point");
397
398 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, v_user_wire_count, CTLFLAG_RD,
399 &vm_user_wire_count, 0, "User-wired virtual memory");
400
401 #ifdef COMPAT_FREEBSD11
402 /*
403 * Provide compatibility sysctls for the benefit of old utilities which exit
404 * with an error if they cannot be found.
405 */
406 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD,
407 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility");
408 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD,
409 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility");
410 #endif
411
412 u_int
vm_free_count(void)413 vm_free_count(void)
414 {
415 u_int v;
416 int i;
417
418 v = 0;
419 for (i = 0; i < vm_ndomains; i++)
420 v += vm_dom[i].vmd_free_count;
421
422 return (v);
423 }
424
425 static u_int
vm_pagequeue_count(int pq)426 vm_pagequeue_count(int pq)
427 {
428 u_int v;
429 int i;
430
431 v = 0;
432 for (i = 0; i < vm_ndomains; i++)
433 v += vm_dom[i].vmd_pagequeues[pq].pq_cnt;
434
435 return (v);
436 }
437
438 u_int
vm_active_count(void)439 vm_active_count(void)
440 {
441
442 return (vm_pagequeue_count(PQ_ACTIVE));
443 }
444
445 u_int
vm_inactive_count(void)446 vm_inactive_count(void)
447 {
448
449 return (vm_pagequeue_count(PQ_INACTIVE));
450 }
451
452 u_int
vm_laundry_count(void)453 vm_laundry_count(void)
454 {
455
456 return (vm_pagequeue_count(PQ_LAUNDRY));
457 }
458
459 static int
sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS)460 sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS)
461 {
462 struct vm_pagequeue *pq;
463 uint64_t ret;
464 int dom, i;
465
466 ret = counter_u64_fetch(vm_cnt.v_pdpages);
467 for (dom = 0; dom < vm_ndomains; dom++)
468 for (i = 0; i < PQ_COUNT; i++) {
469 pq = &VM_DOMAIN(dom)->vmd_pagequeues[i];
470 ret += pq->pq_pdpages;
471 }
472 return (SYSCTL_OUT(req, &ret, sizeof(ret)));
473 }
474 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages,
475 CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU",
476 "Pages analyzed by pagedaemon");
477
478 static void
vm_domain_stats_init(struct vm_domain * vmd,struct sysctl_oid * parent)479 vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent)
480 {
481 struct sysctl_oid *oid;
482
483 vmd->vmd_oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(parent), OID_AUTO,
484 vmd->vmd_name, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
485 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(vmd->vmd_oid), OID_AUTO,
486 "stats", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
487 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
488 "free_count", CTLFLAG_RD, &vmd->vmd_free_count, 0,
489 "Free pages");
490 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
491 "active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0,
492 "Active pages");
493 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
494 "actpdpgs", CTLFLAG_RD,
495 &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0,
496 "Active pages scanned by the page daemon");
497 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
498 "inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0,
499 "Inactive pages");
500 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
501 "inactpdpgs", CTLFLAG_RD,
502 &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0,
503 "Inactive pages scanned by the page daemon");
504 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
505 "laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0,
506 "laundry pages");
507 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
508 "laundpdpgs", CTLFLAG_RD,
509 &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0,
510 "Laundry pages scanned by the page daemon");
511 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable",
512 CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0,
513 "Unswappable pages");
514 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
515 "unswppdpgs", CTLFLAG_RD,
516 &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0,
517 "Unswappable pages scanned by the page daemon");
518 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
519 "inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0,
520 "Target inactive pages");
521 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
522 "free_target", CTLFLAG_RD, &vmd->vmd_free_target, 0,
523 "Target free pages");
524 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
525 "free_reserved", CTLFLAG_RD, &vmd->vmd_free_reserved, 0,
526 "Reserved free pages");
527 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
528 "free_min", CTLFLAG_RD, &vmd->vmd_free_min, 0,
529 "Minimum free pages");
530 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
531 "free_severe", CTLFLAG_RD, &vmd->vmd_free_severe, 0,
532 "Severe free pages");
533 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
534 "inactive_pps", CTLFLAG_RD, &vmd->vmd_inactive_pps, 0,
535 "inactive pages freed/second");
536
537 }
538
539 static void
vm_stats_init(void * arg __unused)540 vm_stats_init(void *arg __unused)
541 {
542 struct sysctl_oid *oid;
543 int i;
544
545 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO,
546 "domain", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
547 for (i = 0; i < vm_ndomains; i++)
548 vm_domain_stats_init(VM_DOMAIN(i), oid);
549 }
550
551 SYSINIT(vmstats_init, SI_SUB_VM_CONF, SI_ORDER_FIRST, vm_stats_init, NULL);
552