Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_meter.c
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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 u_long __exclusive_cache_line vm_user_wire_count; 101 102 static void 103 vmcounter_startup(void) 104 { 105 counter_u64_t *cnt = (counter_u64_t *)&vm_cnt; 106 107 COUNTER_ARRAY_ALLOC(cnt, VM_METER_NCOUNTERS, M_WAITOK); 108 } 109 SYSINIT(counter, SI_SUB_KMEM, SI_ORDER_FIRST, vmcounter_startup, NULL); 110 111 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 112 CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold"); 113 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 114 CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages"); 115 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 116 CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock"); 117 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 118 CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive"); 119 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 120 CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel"); 121 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 122 CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point"); 123 124 static int 125 sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) 126 { 127 128 #ifdef SCTL_MASK32 129 u_int32_t la[4]; 130 131 if (req->flags & SCTL_MASK32) { 132 la[0] = averunnable.ldavg[0]; 133 la[1] = averunnable.ldavg[1]; 134 la[2] = averunnable.ldavg[2]; 135 la[3] = averunnable.fscale; 136 return SYSCTL_OUT(req, la, sizeof(la)); 137 } else 138 #endif 139 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); 140 } 141 SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | 142 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg", 143 "Machine loadaverage history"); 144 145 /* 146 * This function aims to determine if the object is mapped, 147 * specifically, if it is referenced by a vm_map_entry. Because 148 * objects occasionally acquire transient references that do not 149 * represent a mapping, the method used here is inexact. However, it 150 * has very low overhead and is good enough for the advisory 151 * vm.vmtotal sysctl. 152 */ 153 static bool 154 is_object_active(vm_object_t obj) 155 { 156 157 return (obj->ref_count > obj->shadow_count); 158 } 159 160 #if defined(COMPAT_FREEBSD11) 161 struct vmtotal11 { 162 int16_t t_rq; 163 int16_t t_dw; 164 int16_t t_pw; 165 int16_t t_sl; 166 int16_t t_sw; 167 int32_t t_vm; 168 int32_t t_avm; 169 int32_t t_rm; 170 int32_t t_arm; 171 int32_t t_vmshr; 172 int32_t t_avmshr; 173 int32_t t_rmshr; 174 int32_t t_armshr; 175 int32_t t_free; 176 }; 177 #endif 178 179 static int 180 vmtotal(SYSCTL_HANDLER_ARGS) 181 { 182 struct vmtotal total; 183 #if defined(COMPAT_FREEBSD11) 184 struct vmtotal11 total11; 185 #endif 186 vm_object_t object; 187 struct proc *p; 188 struct thread *td; 189 190 if (req->oldptr == NULL) { 191 #if defined(COMPAT_FREEBSD11) 192 if (curproc->p_osrel < P_OSREL_VMTOTAL64) 193 return (SYSCTL_OUT(req, NULL, sizeof(total11))); 194 #endif 195 return (SYSCTL_OUT(req, NULL, sizeof(total))); 196 } 197 bzero(&total, sizeof(total)); 198 199 /* 200 * Calculate process statistics. 201 */ 202 sx_slock(&allproc_lock); 203 FOREACH_PROC_IN_SYSTEM(p) { 204 if ((p->p_flag & P_SYSTEM) != 0) 205 continue; 206 PROC_LOCK(p); 207 if (p->p_state != PRS_NEW) { 208 FOREACH_THREAD_IN_PROC(p, td) { 209 thread_lock(td); 210 switch (td->td_state) { 211 case TDS_INHIBITED: 212 if (TD_IS_SWAPPED(td)) 213 total.t_sw++; 214 else if (TD_IS_SLEEPING(td)) { 215 if (td->td_priority <= PZERO) 216 total.t_dw++; 217 else 218 total.t_sl++; 219 } 220 break; 221 case TDS_CAN_RUN: 222 total.t_sw++; 223 break; 224 case TDS_RUNQ: 225 case TDS_RUNNING: 226 total.t_rq++; 227 break; 228 default: 229 break; 230 } 231 thread_unlock(td); 232 } 233 } 234 PROC_UNLOCK(p); 235 } 236 sx_sunlock(&allproc_lock); 237 /* 238 * Calculate object memory usage statistics. 239 */ 240 mtx_lock(&vm_object_list_mtx); 241 TAILQ_FOREACH(object, &vm_object_list, object_list) { 242 /* 243 * Perform unsynchronized reads on the object. In 244 * this case, the lack of synchronization should not 245 * impair the accuracy of the reported statistics. 246 */ 247 if ((object->flags & OBJ_FICTITIOUS) != 0) { 248 /* 249 * Devices, like /dev/mem, will badly skew our totals. 250 */ 251 continue; 252 } 253 if (object->ref_count == 0) { 254 /* 255 * Also skip unreferenced objects, including 256 * vnodes representing mounted file systems. 257 */ 258 continue; 259 } 260 if (object->ref_count == 1 && 261 (object->flags & OBJ_ANON) == 0) { 262 /* 263 * Also skip otherwise unreferenced swap 264 * objects backing tmpfs vnodes, and POSIX or 265 * SysV shared memory. 266 */ 267 continue; 268 } 269 total.t_vm += object->size; 270 total.t_rm += object->resident_page_count; 271 if (is_object_active(object)) { 272 total.t_avm += object->size; 273 total.t_arm += object->resident_page_count; 274 } 275 if (object->shadow_count > 1) { 276 /* shared object */ 277 total.t_vmshr += object->size; 278 total.t_rmshr += object->resident_page_count; 279 if (is_object_active(object)) { 280 total.t_avmshr += object->size; 281 total.t_armshr += object->resident_page_count; 282 } 283 } 284 } 285 mtx_unlock(&vm_object_list_mtx); 286 total.t_pw = vm_wait_count(); 287 total.t_free = vm_free_count(); 288 #if defined(COMPAT_FREEBSD11) 289 /* sysctl(8) allocates twice as much memory as reported by sysctl(3) */ 290 if (curproc->p_osrel < P_OSREL_VMTOTAL64 && (req->oldlen == 291 sizeof(total11) || req->oldlen == 2 * sizeof(total11))) { 292 bzero(&total11, sizeof(total11)); 293 total11.t_rq = total.t_rq; 294 total11.t_dw = total.t_dw; 295 total11.t_pw = total.t_pw; 296 total11.t_sl = total.t_sl; 297 total11.t_sw = total.t_sw; 298 total11.t_vm = total.t_vm; /* truncate */ 299 total11.t_avm = total.t_avm; /* truncate */ 300 total11.t_rm = total.t_rm; /* truncate */ 301 total11.t_arm = total.t_arm; /* truncate */ 302 total11.t_vmshr = total.t_vmshr; /* truncate */ 303 total11.t_avmshr = total.t_avmshr; /* truncate */ 304 total11.t_rmshr = total.t_rmshr; /* truncate */ 305 total11.t_armshr = total.t_armshr; /* truncate */ 306 total11.t_free = total.t_free; /* truncate */ 307 return (SYSCTL_OUT(req, &total11, sizeof(total11))); 308 } 309 #endif 310 return (SYSCTL_OUT(req, &total, sizeof(total))); 311 } 312 313 SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE | CTLFLAG_RD | 314 CTLFLAG_MPSAFE, NULL, 0, vmtotal, "S,vmtotal", 315 "System virtual memory statistics"); 316 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 317 "VM meter stats"); 318 static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 319 "VM meter sys stats"); 320 static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 321 "VM meter vm stats"); 322 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 323 "VM meter misc stats"); 324 325 static int 326 sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS) 327 { 328 uint64_t val; 329 #ifdef COMPAT_FREEBSD11 330 uint32_t val32; 331 #endif 332 333 val = counter_u64_fetch(*(counter_u64_t *)arg1); 334 #ifdef COMPAT_FREEBSD11 335 if (req->oldlen == sizeof(val32)) { 336 val32 = val; /* truncate */ 337 return (SYSCTL_OUT(req, &val32, sizeof(val32))); 338 } 339 #endif 340 return (SYSCTL_OUT(req, &val, sizeof(val))); 341 } 342 343 #define VM_STATS(parent, var, descr) \ 344 SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \ 345 CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr) 346 #define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr) 347 #define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr) 348 349 VM_STATS_SYS(v_swtch, "Context switches"); 350 VM_STATS_SYS(v_trap, "Traps"); 351 VM_STATS_SYS(v_syscall, "System calls"); 352 VM_STATS_SYS(v_intr, "Device interrupts"); 353 VM_STATS_SYS(v_soft, "Software interrupts"); 354 VM_STATS_VM(v_vm_faults, "Address memory faults"); 355 VM_STATS_VM(v_io_faults, "Page faults requiring I/O"); 356 VM_STATS_VM(v_cow_faults, "Copy-on-write faults"); 357 VM_STATS_VM(v_cow_optim, "Optimized COW faults"); 358 VM_STATS_VM(v_zfod, "Pages zero-filled on demand"); 359 VM_STATS_VM(v_ozfod, "Optimized zero fill pages"); 360 VM_STATS_VM(v_swapin, "Swap pager pageins"); 361 VM_STATS_VM(v_swapout, "Swap pager pageouts"); 362 VM_STATS_VM(v_swappgsin, "Swap pages swapped in"); 363 VM_STATS_VM(v_swappgsout, "Swap pages swapped out"); 364 VM_STATS_VM(v_vnodein, "Vnode pager pageins"); 365 VM_STATS_VM(v_vnodeout, "Vnode pager pageouts"); 366 VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in"); 367 VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out"); 368 VM_STATS_VM(v_intrans, "In transit page faults"); 369 VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon"); 370 VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups"); 371 VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls"); 372 VM_STATS_VM(v_dfree, "Pages freed by pagedaemon"); 373 VM_STATS_VM(v_pfree, "Pages freed by exiting processes"); 374 VM_STATS_VM(v_tfree, "Total pages freed"); 375 VM_STATS_VM(v_forks, "Number of fork() calls"); 376 VM_STATS_VM(v_vforks, "Number of vfork() calls"); 377 VM_STATS_VM(v_rforks, "Number of rfork() calls"); 378 VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel"); 379 VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); 380 VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); 381 VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); 382 VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); 383 384 static int 385 sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS) 386 { 387 u_int (*fn)(void); 388 uint32_t val; 389 390 fn = arg1; 391 val = fn(); 392 return (SYSCTL_OUT(req, &val, sizeof(val))); 393 } 394 395 #define VM_STATS_PROC(var, descr, fn) \ 396 SYSCTL_OID(_vm_stats_vm, OID_AUTO, var, CTLTYPE_U32 | CTLFLAG_MPSAFE | \ 397 CTLFLAG_RD, fn, 0, sysctl_handle_vmstat_proc, "IU", descr) 398 399 #define VM_STATS_UINT(var, descr) \ 400 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) 401 #define VM_STATS_ULONG(var, descr) \ 402 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) 403 404 VM_STATS_UINT(v_page_size, "Page size in bytes"); 405 VM_STATS_UINT(v_page_count, "Total number of pages in system"); 406 VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock"); 407 VM_STATS_UINT(v_free_target, "Pages desired free"); 408 VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold"); 409 VM_STATS_PROC(v_free_count, "Free pages", vm_free_count); 410 VM_STATS_PROC(v_wire_count, "Wired pages", vm_wire_count); 411 VM_STATS_PROC(v_active_count, "Active pages", vm_active_count); 412 VM_STATS_UINT(v_inactive_target, "Desired inactive pages"); 413 VM_STATS_PROC(v_inactive_count, "Inactive pages", vm_inactive_count); 414 VM_STATS_PROC(v_laundry_count, "Pages eligible for laundering", 415 vm_laundry_count); 416 VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel"); 417 VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code"); 418 VM_STATS_UINT(v_free_severe, "Severe page depletion point"); 419 420 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, v_user_wire_count, CTLFLAG_RD, 421 &vm_user_wire_count, 0, "User-wired virtual memory"); 422 423 #ifdef COMPAT_FREEBSD11 424 /* 425 * Provide compatibility sysctls for the benefit of old utilities which exit 426 * with an error if they cannot be found. 427 */ 428 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, 429 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 430 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, 431 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 432 #endif 433 434 u_int 435 vm_free_count(void) 436 { 437 u_int v; 438 int i; 439 440 v = 0; 441 for (i = 0; i < vm_ndomains; i++) 442 v += vm_dom[i].vmd_free_count; 443 444 return (v); 445 } 446 447 static u_int 448 vm_pagequeue_count(int pq) 449 { 450 u_int v; 451 int i; 452 453 v = 0; 454 for (i = 0; i < vm_ndomains; i++) 455 v += vm_dom[i].vmd_pagequeues[pq].pq_cnt; 456 457 return (v); 458 } 459 460 u_int 461 vm_active_count(void) 462 { 463 464 return (vm_pagequeue_count(PQ_ACTIVE)); 465 } 466 467 u_int 468 vm_inactive_count(void) 469 { 470 471 return (vm_pagequeue_count(PQ_INACTIVE)); 472 } 473 474 u_int 475 vm_laundry_count(void) 476 { 477 478 return (vm_pagequeue_count(PQ_LAUNDRY)); 479 } 480 481 static int 482 sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS) 483 { 484 struct vm_pagequeue *pq; 485 uint64_t ret; 486 int dom, i; 487 488 ret = counter_u64_fetch(vm_cnt.v_pdpages); 489 for (dom = 0; dom < vm_ndomains; dom++) 490 for (i = 0; i < PQ_COUNT; i++) { 491 pq = &VM_DOMAIN(dom)->vmd_pagequeues[i]; 492 ret += pq->pq_pdpages; 493 } 494 return (SYSCTL_OUT(req, &ret, sizeof(ret))); 495 } 496 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, 497 CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU", 498 "Pages analyzed by pagedaemon"); 499 500 static void 501 vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent) 502 { 503 struct sysctl_oid *oid; 504 505 vmd->vmd_oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(parent), OID_AUTO, 506 vmd->vmd_name, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 507 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(vmd->vmd_oid), OID_AUTO, 508 "stats", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 509 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 510 "free_count", CTLFLAG_RD, &vmd->vmd_free_count, 0, 511 "Free pages"); 512 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 513 "active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0, 514 "Active pages"); 515 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 516 "actpdpgs", CTLFLAG_RD, 517 &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0, 518 "Active pages scanned by the page daemon"); 519 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 520 "inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0, 521 "Inactive pages"); 522 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 523 "inactpdpgs", CTLFLAG_RD, 524 &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0, 525 "Inactive pages scanned by the page daemon"); 526 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 527 "laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0, 528 "laundry pages"); 529 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 530 "laundpdpgs", CTLFLAG_RD, 531 &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0, 532 "Laundry pages scanned by the page daemon"); 533 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable", 534 CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0, 535 "Unswappable pages"); 536 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 537 "unswppdpgs", CTLFLAG_RD, 538 &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0, 539 "Unswappable pages scanned by the page daemon"); 540 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 541 "inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0, 542 "Target inactive pages"); 543 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 544 "free_target", CTLFLAG_RD, &vmd->vmd_free_target, 0, 545 "Target free pages"); 546 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 547 "free_reserved", CTLFLAG_RD, &vmd->vmd_free_reserved, 0, 548 "Reserved free pages"); 549 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 550 "free_min", CTLFLAG_RD, &vmd->vmd_free_min, 0, 551 "Minimum free pages"); 552 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 553 "free_severe", CTLFLAG_RD, &vmd->vmd_free_severe, 0, 554 "Severe free pages"); 555 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 556 "inactive_pps", CTLFLAG_RD, &vmd->vmd_inactive_pps, 0, 557 "inactive pages freed/second"); 558 559 } 560 561 static void 562 vm_stats_init(void *arg __unused) 563 { 564 struct sysctl_oid *oid; 565 int i; 566 567 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO, 568 "domain", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 569 for (i = 0; i < vm_ndomains; i++) 570 vm_domain_stats_init(VM_DOMAIN(i), oid); 571 } 572 573 SYSINIT(vmstats_init, SI_SUB_VM_CONF, SI_ORDER_FIRST, vm_stats_init, NULL);
Cache object: ae26c763d14a4861c0628f4b7bb359d7
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