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 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/malloc.h> 42 #include <sys/mutex.h> 43 #include <sys/proc.h> 44 #include <sys/resource.h> 45 #include <sys/rwlock.h> 46 #include <sys/sx.h> 47 #include <sys/vmmeter.h> 48 #include <sys/smp.h> 49 50 #include <vm/vm.h> 51 #include <vm/vm_page.h> 52 #include <vm/vm_extern.h> 53 #include <vm/vm_param.h> 54 #include <vm/vm_phys.h> 55 #include <vm/vm_pagequeue.h> 56 #include <vm/pmap.h> 57 #include <vm/vm_map.h> 58 #include <vm/vm_object.h> 59 #include <sys/sysctl.h> 60 61 struct vmmeter __read_mostly vm_cnt = { 62 .v_swtch = EARLY_COUNTER, 63 .v_trap = EARLY_COUNTER, 64 .v_syscall = EARLY_COUNTER, 65 .v_intr = EARLY_COUNTER, 66 .v_soft = EARLY_COUNTER, 67 .v_vm_faults = EARLY_COUNTER, 68 .v_io_faults = EARLY_COUNTER, 69 .v_cow_faults = EARLY_COUNTER, 70 .v_cow_optim = EARLY_COUNTER, 71 .v_zfod = EARLY_COUNTER, 72 .v_ozfod = EARLY_COUNTER, 73 .v_swapin = EARLY_COUNTER, 74 .v_swapout = EARLY_COUNTER, 75 .v_swappgsin = EARLY_COUNTER, 76 .v_swappgsout = EARLY_COUNTER, 77 .v_vnodein = EARLY_COUNTER, 78 .v_vnodeout = EARLY_COUNTER, 79 .v_vnodepgsin = EARLY_COUNTER, 80 .v_vnodepgsout = EARLY_COUNTER, 81 .v_intrans = EARLY_COUNTER, 82 .v_reactivated = EARLY_COUNTER, 83 .v_pdwakeups = EARLY_COUNTER, 84 .v_pdpages = EARLY_COUNTER, 85 .v_pdshortfalls = EARLY_COUNTER, 86 .v_dfree = EARLY_COUNTER, 87 .v_pfree = EARLY_COUNTER, 88 .v_tfree = EARLY_COUNTER, 89 .v_forks = EARLY_COUNTER, 90 .v_vforks = EARLY_COUNTER, 91 .v_rforks = EARLY_COUNTER, 92 .v_kthreads = EARLY_COUNTER, 93 .v_forkpages = EARLY_COUNTER, 94 .v_vforkpages = EARLY_COUNTER, 95 .v_rforkpages = EARLY_COUNTER, 96 .v_kthreadpages = EARLY_COUNTER, 97 .v_wire_count = EARLY_COUNTER, 98 }; 99 100 static void 101 vmcounter_startup(void) 102 { 103 counter_u64_t *cnt = (counter_u64_t *)&vm_cnt; 104 105 COUNTER_ARRAY_ALLOC(cnt, VM_METER_NCOUNTERS, M_WAITOK); 106 } 107 SYSINIT(counter, SI_SUB_KMEM, SI_ORDER_FIRST, vmcounter_startup, NULL); 108 109 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 110 CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold"); 111 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 112 CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages"); 113 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 114 CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock"); 115 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 116 CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive"); 117 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 118 CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel"); 119 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 120 CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point"); 121 122 static int 123 sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) 124 { 125 126 #ifdef SCTL_MASK32 127 u_int32_t la[4]; 128 129 if (req->flags & SCTL_MASK32) { 130 la[0] = averunnable.ldavg[0]; 131 la[1] = averunnable.ldavg[1]; 132 la[2] = averunnable.ldavg[2]; 133 la[3] = averunnable.fscale; 134 return SYSCTL_OUT(req, la, sizeof(la)); 135 } else 136 #endif 137 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); 138 } 139 SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | 140 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg", 141 "Machine loadaverage history"); 142 143 /* 144 * This function aims to determine if the object is mapped, 145 * specifically, if it is referenced by a vm_map_entry. Because 146 * objects occasionally acquire transient references that do not 147 * represent a mapping, the method used here is inexact. However, it 148 * has very low overhead and is good enough for the advisory 149 * vm.vmtotal sysctl. 150 */ 151 static bool 152 is_object_active(vm_object_t obj) 153 { 154 155 return (obj->ref_count > obj->shadow_count); 156 } 157 158 #if defined(COMPAT_FREEBSD11) 159 struct vmtotal11 { 160 int16_t t_rq; 161 int16_t t_dw; 162 int16_t t_pw; 163 int16_t t_sl; 164 int16_t t_sw; 165 int32_t t_vm; 166 int32_t t_avm; 167 int32_t t_rm; 168 int32_t t_arm; 169 int32_t t_vmshr; 170 int32_t t_avmshr; 171 int32_t t_rmshr; 172 int32_t t_armshr; 173 int32_t t_free; 174 }; 175 #endif 176 177 static int 178 vmtotal(SYSCTL_HANDLER_ARGS) 179 { 180 struct vmtotal total; 181 #if defined(COMPAT_FREEBSD11) 182 struct vmtotal11 total11; 183 #endif 184 vm_object_t object; 185 struct proc *p; 186 struct thread *td; 187 188 if (req->oldptr == NULL) { 189 #if defined(COMPAT_FREEBSD11) 190 if (curproc->p_osrel < P_OSREL_VMTOTAL64) 191 return (SYSCTL_OUT(req, NULL, sizeof(total11))); 192 #endif 193 return (SYSCTL_OUT(req, NULL, sizeof(total))); 194 } 195 bzero(&total, sizeof(total)); 196 197 /* 198 * Calculate process statistics. 199 */ 200 sx_slock(&allproc_lock); 201 FOREACH_PROC_IN_SYSTEM(p) { 202 if ((p->p_flag & P_SYSTEM) != 0) 203 continue; 204 PROC_LOCK(p); 205 if (p->p_state != PRS_NEW) { 206 FOREACH_THREAD_IN_PROC(p, td) { 207 thread_lock(td); 208 switch (td->td_state) { 209 case TDS_INHIBITED: 210 if (TD_IS_SWAPPED(td)) 211 total.t_sw++; 212 else if (TD_IS_SLEEPING(td)) { 213 if (td->td_priority <= PZERO) 214 total.t_dw++; 215 else 216 total.t_sl++; 217 } 218 break; 219 case TDS_CAN_RUN: 220 total.t_sw++; 221 break; 222 case TDS_RUNQ: 223 case TDS_RUNNING: 224 total.t_rq++; 225 break; 226 default: 227 break; 228 } 229 thread_unlock(td); 230 } 231 } 232 PROC_UNLOCK(p); 233 } 234 sx_sunlock(&allproc_lock); 235 /* 236 * Calculate object memory usage statistics. 237 */ 238 mtx_lock(&vm_object_list_mtx); 239 TAILQ_FOREACH(object, &vm_object_list, object_list) { 240 /* 241 * Perform unsynchronized reads on the object. In 242 * this case, the lack of synchronization should not 243 * impair the accuracy of the reported statistics. 244 */ 245 if ((object->flags & OBJ_FICTITIOUS) != 0) { 246 /* 247 * Devices, like /dev/mem, will badly skew our totals. 248 */ 249 continue; 250 } 251 if (object->ref_count == 0) { 252 /* 253 * Also skip unreferenced objects, including 254 * vnodes representing mounted file systems. 255 */ 256 continue; 257 } 258 if (object->ref_count == 1 && 259 (object->flags & OBJ_NOSPLIT) != 0) { 260 /* 261 * Also skip otherwise unreferenced swap 262 * objects backing tmpfs vnodes, and POSIX or 263 * SysV shared memory. 264 */ 265 continue; 266 } 267 total.t_vm += object->size; 268 total.t_rm += object->resident_page_count; 269 if (is_object_active(object)) { 270 total.t_avm += object->size; 271 total.t_arm += object->resident_page_count; 272 } 273 if (object->shadow_count > 1) { 274 /* shared object */ 275 total.t_vmshr += object->size; 276 total.t_rmshr += object->resident_page_count; 277 if (is_object_active(object)) { 278 total.t_avmshr += object->size; 279 total.t_armshr += object->resident_page_count; 280 } 281 } 282 } 283 mtx_unlock(&vm_object_list_mtx); 284 total.t_pw = vm_wait_count(); 285 total.t_free = vm_free_count(); 286 #if defined(COMPAT_FREEBSD11) 287 /* sysctl(8) allocates twice as much memory as reported by sysctl(3) */ 288 if (curproc->p_osrel < P_OSREL_VMTOTAL64 && (req->oldlen == 289 sizeof(total11) || req->oldlen == 2 * sizeof(total11))) { 290 bzero(&total11, sizeof(total11)); 291 total11.t_rq = total.t_rq; 292 total11.t_dw = total.t_dw; 293 total11.t_pw = total.t_pw; 294 total11.t_sl = total.t_sl; 295 total11.t_sw = total.t_sw; 296 total11.t_vm = total.t_vm; /* truncate */ 297 total11.t_avm = total.t_avm; /* truncate */ 298 total11.t_rm = total.t_rm; /* truncate */ 299 total11.t_arm = total.t_arm; /* truncate */ 300 total11.t_vmshr = total.t_vmshr; /* truncate */ 301 total11.t_avmshr = total.t_avmshr; /* truncate */ 302 total11.t_rmshr = total.t_rmshr; /* truncate */ 303 total11.t_armshr = total.t_armshr; /* truncate */ 304 total11.t_free = total.t_free; /* truncate */ 305 return (SYSCTL_OUT(req, &total11, sizeof(total11))); 306 } 307 #endif 308 return (SYSCTL_OUT(req, &total, sizeof(total))); 309 } 310 311 SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE | CTLFLAG_RD | 312 CTLFLAG_MPSAFE, NULL, 0, vmtotal, "S,vmtotal", 313 "System virtual memory statistics"); 314 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 315 static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, 316 "VM meter sys stats"); 317 static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, 318 "VM meter vm stats"); 319 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 320 321 static int 322 sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS) 323 { 324 uint64_t val; 325 #ifdef COMPAT_FREEBSD11 326 uint32_t val32; 327 #endif 328 329 val = counter_u64_fetch(*(counter_u64_t *)arg1); 330 #ifdef COMPAT_FREEBSD11 331 if (req->oldlen == sizeof(val32)) { 332 val32 = val; /* truncate */ 333 return (SYSCTL_OUT(req, &val32, sizeof(val32))); 334 } 335 #endif 336 return (SYSCTL_OUT(req, &val, sizeof(val))); 337 } 338 339 #define VM_STATS(parent, var, descr) \ 340 SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \ 341 CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr) 342 #define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr) 343 #define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr) 344 345 VM_STATS_SYS(v_swtch, "Context switches"); 346 VM_STATS_SYS(v_trap, "Traps"); 347 VM_STATS_SYS(v_syscall, "System calls"); 348 VM_STATS_SYS(v_intr, "Device interrupts"); 349 VM_STATS_SYS(v_soft, "Software interrupts"); 350 VM_STATS_VM(v_vm_faults, "Address memory faults"); 351 VM_STATS_VM(v_io_faults, "Page faults requiring I/O"); 352 VM_STATS_VM(v_cow_faults, "Copy-on-write faults"); 353 VM_STATS_VM(v_cow_optim, "Optimized COW faults"); 354 VM_STATS_VM(v_zfod, "Pages zero-filled on demand"); 355 VM_STATS_VM(v_ozfod, "Optimized zero fill pages"); 356 VM_STATS_VM(v_swapin, "Swap pager pageins"); 357 VM_STATS_VM(v_swapout, "Swap pager pageouts"); 358 VM_STATS_VM(v_swappgsin, "Swap pages swapped in"); 359 VM_STATS_VM(v_swappgsout, "Swap pages swapped out"); 360 VM_STATS_VM(v_vnodein, "Vnode pager pageins"); 361 VM_STATS_VM(v_vnodeout, "Vnode pager pageouts"); 362 VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in"); 363 VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out"); 364 VM_STATS_VM(v_intrans, "In transit page faults"); 365 VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon"); 366 VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups"); 367 VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls"); 368 VM_STATS_VM(v_dfree, "Pages freed by pagedaemon"); 369 VM_STATS_VM(v_pfree, "Pages freed by exiting processes"); 370 VM_STATS_VM(v_tfree, "Total pages freed"); 371 VM_STATS_VM(v_forks, "Number of fork() calls"); 372 VM_STATS_VM(v_vforks, "Number of vfork() calls"); 373 VM_STATS_VM(v_rforks, "Number of rfork() calls"); 374 VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel"); 375 VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); 376 VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); 377 VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); 378 VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); 379 380 static int 381 sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS) 382 { 383 u_int (*fn)(void); 384 uint32_t val; 385 386 fn = arg1; 387 val = fn(); 388 return (SYSCTL_OUT(req, &val, sizeof(val))); 389 } 390 391 #define VM_STATS_PROC(var, descr, fn) \ 392 SYSCTL_OID(_vm_stats_vm, OID_AUTO, var, CTLTYPE_U32 | CTLFLAG_MPSAFE | \ 393 CTLFLAG_RD, fn, 0, sysctl_handle_vmstat_proc, "IU", descr) 394 395 #define VM_STATS_UINT(var, descr) \ 396 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) 397 398 VM_STATS_UINT(v_page_size, "Page size in bytes"); 399 VM_STATS_UINT(v_page_count, "Total number of pages in system"); 400 VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock"); 401 VM_STATS_UINT(v_free_target, "Pages desired free"); 402 VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold"); 403 VM_STATS_PROC(v_free_count, "Free pages", vm_free_count); 404 VM_STATS_PROC(v_wire_count, "Wired pages", vm_wire_count); 405 VM_STATS_PROC(v_active_count, "Active pages", vm_active_count); 406 VM_STATS_UINT(v_inactive_target, "Desired inactive pages"); 407 VM_STATS_PROC(v_inactive_count, "Inactive pages", vm_inactive_count); 408 VM_STATS_PROC(v_laundry_count, "Pages eligible for laundering", 409 vm_laundry_count); 410 VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel"); 411 VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code"); 412 VM_STATS_UINT(v_free_severe, "Severe page depletion point"); 413 414 #ifdef COMPAT_FREEBSD11 415 /* 416 * Provide compatibility sysctls for the benefit of old utilities which exit 417 * with an error if they cannot be found. 418 */ 419 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, 420 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 421 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, 422 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 423 #endif 424 425 u_int 426 vm_free_count(void) 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_free_count; 434 435 return (v); 436 } 437 438 static u_int 439 vm_pagequeue_count(int pq) 440 { 441 u_int v; 442 int i; 443 444 v = 0; 445 for (i = 0; i < vm_ndomains; i++) 446 v += vm_dom[i].vmd_pagequeues[pq].pq_cnt; 447 448 return (v); 449 } 450 451 u_int 452 vm_active_count(void) 453 { 454 455 return (vm_pagequeue_count(PQ_ACTIVE)); 456 } 457 458 u_int 459 vm_inactive_count(void) 460 { 461 462 return (vm_pagequeue_count(PQ_INACTIVE)); 463 } 464 465 u_int 466 vm_laundry_count(void) 467 { 468 469 return (vm_pagequeue_count(PQ_LAUNDRY)); 470 } 471 472 static int 473 sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS) 474 { 475 struct vm_pagequeue *pq; 476 uint64_t ret; 477 int dom, i; 478 479 ret = counter_u64_fetch(vm_cnt.v_pdpages); 480 for (dom = 0; dom < vm_ndomains; dom++) 481 for (i = 0; i < PQ_COUNT; i++) { 482 pq = &VM_DOMAIN(dom)->vmd_pagequeues[i]; 483 ret += pq->pq_pdpages; 484 } 485 return (SYSCTL_OUT(req, &ret, sizeof(ret))); 486 } 487 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, 488 CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU", 489 "Pages analyzed by pagedaemon"); 490 491 static void 492 vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent) 493 { 494 struct sysctl_oid *oid; 495 496 vmd->vmd_oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(parent), OID_AUTO, 497 vmd->vmd_name, CTLFLAG_RD, NULL, ""); 498 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(vmd->vmd_oid), OID_AUTO, 499 "stats", CTLFLAG_RD, NULL, ""); 500 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 501 "free_count", CTLFLAG_RD, &vmd->vmd_free_count, 0, 502 "Free pages"); 503 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 504 "active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0, 505 "Active pages"); 506 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 507 "actpdpgs", CTLFLAG_RD, 508 &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0, 509 "Active pages scanned by the page daemon"); 510 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 511 "inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0, 512 "Inactive pages"); 513 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 514 "inactpdpgs", CTLFLAG_RD, 515 &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0, 516 "Inactive pages scanned by the page daemon"); 517 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 518 "laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0, 519 "laundry pages"); 520 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 521 "laundpdpgs", CTLFLAG_RD, 522 &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0, 523 "Laundry pages scanned by the page daemon"); 524 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable", 525 CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0, 526 "Unswappable pages"); 527 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 528 "unswppdpgs", CTLFLAG_RD, 529 &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0, 530 "Unswappable pages scanned by the page daemon"); 531 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 532 "inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0, 533 "Target inactive pages"); 534 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 535 "free_target", CTLFLAG_RD, &vmd->vmd_free_target, 0, 536 "Target free pages"); 537 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 538 "free_reserved", CTLFLAG_RD, &vmd->vmd_free_reserved, 0, 539 "Reserved free pages"); 540 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 541 "free_min", CTLFLAG_RD, &vmd->vmd_free_min, 0, 542 "Minimum free pages"); 543 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 544 "free_severe", CTLFLAG_RD, &vmd->vmd_free_severe, 0, 545 "Severe free pages"); 546 547 } 548 549 static void 550 vm_stats_init(void *arg __unused) 551 { 552 struct sysctl_oid *oid; 553 int i; 554 555 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO, 556 "domain", CTLFLAG_RD, NULL, ""); 557 for (i = 0; i < vm_ndomains; i++) 558 vm_domain_stats_init(VM_DOMAIN(i), oid); 559 } 560 561 SYSINIT(vmstats_init, SI_SUB_VM_CONF, SI_ORDER_FIRST, vm_stats_init, NULL); 562