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 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/lock.h> 39 #include <sys/malloc.h> 40 #include <sys/mutex.h> 41 #include <sys/proc.h> 42 #include <sys/resource.h> 43 #include <sys/rwlock.h> 44 #include <sys/sx.h> 45 #include <sys/vmmeter.h> 46 #include <sys/smp.h> 47 48 #include <vm/vm.h> 49 #include <vm/vm_page.h> 50 #include <vm/vm_extern.h> 51 #include <vm/vm_param.h> 52 #include <vm/vm_phys.h> 53 #include <vm/vm_pagequeue.h> 54 #include <vm/pmap.h> 55 #include <vm/vm_map.h> 56 #include <vm/vm_object.h> 57 #include <sys/sysctl.h> 58 59 struct vmmeter __read_mostly vm_cnt = { 60 .v_swtch = EARLY_COUNTER, 61 .v_trap = EARLY_COUNTER, 62 .v_syscall = EARLY_COUNTER, 63 .v_intr = EARLY_COUNTER, 64 .v_soft = EARLY_COUNTER, 65 .v_vm_faults = EARLY_COUNTER, 66 .v_io_faults = EARLY_COUNTER, 67 .v_cow_faults = EARLY_COUNTER, 68 .v_cow_optim = EARLY_COUNTER, 69 .v_zfod = EARLY_COUNTER, 70 .v_ozfod = EARLY_COUNTER, 71 .v_swapin = EARLY_COUNTER, 72 .v_swapout = EARLY_COUNTER, 73 .v_swappgsin = EARLY_COUNTER, 74 .v_swappgsout = EARLY_COUNTER, 75 .v_vnodein = EARLY_COUNTER, 76 .v_vnodeout = EARLY_COUNTER, 77 .v_vnodepgsin = EARLY_COUNTER, 78 .v_vnodepgsout = EARLY_COUNTER, 79 .v_intrans = EARLY_COUNTER, 80 .v_reactivated = EARLY_COUNTER, 81 .v_pdwakeups = EARLY_COUNTER, 82 .v_pdpages = EARLY_COUNTER, 83 .v_pdshortfalls = EARLY_COUNTER, 84 .v_dfree = EARLY_COUNTER, 85 .v_pfree = EARLY_COUNTER, 86 .v_tfree = EARLY_COUNTER, 87 .v_forks = EARLY_COUNTER, 88 .v_vforks = EARLY_COUNTER, 89 .v_rforks = EARLY_COUNTER, 90 .v_kthreads = EARLY_COUNTER, 91 .v_forkpages = EARLY_COUNTER, 92 .v_vforkpages = EARLY_COUNTER, 93 .v_rforkpages = EARLY_COUNTER, 94 .v_kthreadpages = EARLY_COUNTER, 95 .v_wire_count = EARLY_COUNTER, 96 }; 97 98 u_long __exclusive_cache_line vm_user_wire_count; 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 uint32_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 #if defined(COMPAT_FREEBSD11) 144 struct vmtotal11 { 145 int16_t t_rq; 146 int16_t t_dw; 147 int16_t t_pw; 148 int16_t t_sl; 149 int16_t t_sw; 150 int32_t t_vm; 151 int32_t t_avm; 152 int32_t t_rm; 153 int32_t t_arm; 154 int32_t t_vmshr; 155 int32_t t_avmshr; 156 int32_t t_rmshr; 157 int32_t t_armshr; 158 int32_t t_free; 159 }; 160 #endif 161 162 static int 163 vmtotal(SYSCTL_HANDLER_ARGS) 164 { 165 struct vmtotal total; 166 #if defined(COMPAT_FREEBSD11) 167 struct vmtotal11 total11; 168 #endif 169 vm_object_t object; 170 struct proc *p; 171 struct thread *td; 172 173 if (req->oldptr == NULL) { 174 #if defined(COMPAT_FREEBSD11) 175 if (curproc->p_osrel < P_OSREL_VMTOTAL64) 176 return (SYSCTL_OUT(req, NULL, sizeof(total11))); 177 #endif 178 return (SYSCTL_OUT(req, NULL, sizeof(total))); 179 } 180 bzero(&total, sizeof(total)); 181 182 /* 183 * Calculate process statistics. 184 */ 185 sx_slock(&allproc_lock); 186 FOREACH_PROC_IN_SYSTEM(p) { 187 if ((p->p_flag & P_SYSTEM) != 0) 188 continue; 189 PROC_LOCK(p); 190 if (p->p_state != PRS_NEW) { 191 FOREACH_THREAD_IN_PROC(p, td) { 192 thread_lock(td); 193 switch (TD_GET_STATE(td)) { 194 case TDS_INHIBITED: 195 if (TD_IS_SWAPPED(td)) 196 total.t_sw++; 197 else if (TD_IS_SLEEPING(td)) { 198 if (td->td_priority <= PZERO) 199 total.t_dw++; 200 else 201 total.t_sl++; 202 } 203 break; 204 case TDS_CAN_RUN: 205 total.t_sw++; 206 break; 207 case TDS_RUNQ: 208 case TDS_RUNNING: 209 total.t_rq++; 210 break; 211 default: 212 break; 213 } 214 thread_unlock(td); 215 } 216 } 217 PROC_UNLOCK(p); 218 } 219 sx_sunlock(&allproc_lock); 220 /* 221 * Calculate object memory usage statistics. 222 */ 223 mtx_lock(&vm_object_list_mtx); 224 TAILQ_FOREACH(object, &vm_object_list, object_list) { 225 /* 226 * Perform unsynchronized reads on the object. In 227 * this case, the lack of synchronization should not 228 * impair the accuracy of the reported statistics. 229 */ 230 if ((object->flags & OBJ_FICTITIOUS) != 0) { 231 /* 232 * Devices, like /dev/mem, will badly skew our totals. 233 */ 234 continue; 235 } 236 if (object->ref_count == 0) { 237 /* 238 * Also skip unreferenced objects, including 239 * vnodes representing mounted file systems. 240 */ 241 continue; 242 } 243 if (object->ref_count == 1 && 244 (object->flags & (OBJ_ANON | OBJ_SWAP)) == OBJ_SWAP) { 245 /* 246 * Also skip otherwise unreferenced swap 247 * objects backing tmpfs vnodes, and POSIX or 248 * SysV shared memory. 249 */ 250 continue; 251 } 252 total.t_vm += object->size; 253 total.t_rm += object->resident_page_count; 254 if (vm_object_is_active(object)) { 255 total.t_avm += object->size; 256 total.t_arm += object->resident_page_count; 257 } 258 if (object->shadow_count > 1) { 259 /* shared object */ 260 total.t_vmshr += object->size; 261 total.t_rmshr += object->resident_page_count; 262 if (vm_object_is_active(object)) { 263 total.t_avmshr += object->size; 264 total.t_armshr += object->resident_page_count; 265 } 266 } 267 } 268 mtx_unlock(&vm_object_list_mtx); 269 total.t_pw = vm_wait_count(); 270 total.t_free = vm_free_count(); 271 #if defined(COMPAT_FREEBSD11) 272 /* sysctl(8) allocates twice as much memory as reported by sysctl(3) */ 273 if (curproc->p_osrel < P_OSREL_VMTOTAL64 && (req->oldlen == 274 sizeof(total11) || req->oldlen == 2 * sizeof(total11))) { 275 bzero(&total11, sizeof(total11)); 276 total11.t_rq = total.t_rq; 277 total11.t_dw = total.t_dw; 278 total11.t_pw = total.t_pw; 279 total11.t_sl = total.t_sl; 280 total11.t_sw = total.t_sw; 281 total11.t_vm = total.t_vm; /* truncate */ 282 total11.t_avm = total.t_avm; /* truncate */ 283 total11.t_rm = total.t_rm; /* truncate */ 284 total11.t_arm = total.t_arm; /* truncate */ 285 total11.t_vmshr = total.t_vmshr; /* truncate */ 286 total11.t_avmshr = total.t_avmshr; /* truncate */ 287 total11.t_rmshr = total.t_rmshr; /* truncate */ 288 total11.t_armshr = total.t_armshr; /* truncate */ 289 total11.t_free = total.t_free; /* truncate */ 290 return (SYSCTL_OUT(req, &total11, sizeof(total11))); 291 } 292 #endif 293 return (SYSCTL_OUT(req, &total, sizeof(total))); 294 } 295 296 SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE | CTLFLAG_RD | 297 CTLFLAG_MPSAFE, NULL, 0, vmtotal, "S,vmtotal", 298 "System virtual memory statistics"); 299 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 300 "VM meter stats"); 301 static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 302 "VM meter sys stats"); 303 static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 304 "VM meter vm stats"); 305 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 306 "VM meter misc stats"); 307 308 static int 309 sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS) 310 { 311 uint64_t val; 312 #ifdef COMPAT_FREEBSD11 313 uint32_t val32; 314 #endif 315 316 val = counter_u64_fetch(*(counter_u64_t *)arg1); 317 #ifdef COMPAT_FREEBSD11 318 if (req->oldlen == sizeof(val32)) { 319 val32 = val; /* truncate */ 320 return (SYSCTL_OUT(req, &val32, sizeof(val32))); 321 } 322 #endif 323 return (SYSCTL_OUT(req, &val, sizeof(val))); 324 } 325 326 #define VM_STATS(parent, var, descr) \ 327 SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \ 328 CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr) 329 #define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr) 330 #define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr) 331 332 VM_STATS_SYS(v_swtch, "Context switches"); 333 VM_STATS_SYS(v_trap, "Traps"); 334 VM_STATS_SYS(v_syscall, "System calls"); 335 VM_STATS_SYS(v_intr, "Device interrupts"); 336 VM_STATS_SYS(v_soft, "Software interrupts"); 337 VM_STATS_VM(v_vm_faults, "Address memory faults"); 338 VM_STATS_VM(v_io_faults, "Page faults requiring I/O"); 339 VM_STATS_VM(v_cow_faults, "Copy-on-write faults"); 340 VM_STATS_VM(v_cow_optim, "Optimized COW faults"); 341 VM_STATS_VM(v_zfod, "Pages zero-filled on demand"); 342 VM_STATS_VM(v_ozfod, "Optimized zero fill pages"); 343 VM_STATS_VM(v_swapin, "Swap pager pageins"); 344 VM_STATS_VM(v_swapout, "Swap pager pageouts"); 345 VM_STATS_VM(v_swappgsin, "Swap pages swapped in"); 346 VM_STATS_VM(v_swappgsout, "Swap pages swapped out"); 347 VM_STATS_VM(v_vnodein, "Vnode pager pageins"); 348 VM_STATS_VM(v_vnodeout, "Vnode pager pageouts"); 349 VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in"); 350 VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out"); 351 VM_STATS_VM(v_intrans, "In transit page faults"); 352 VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon"); 353 VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups"); 354 VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls"); 355 VM_STATS_VM(v_dfree, "Pages freed by pagedaemon"); 356 VM_STATS_VM(v_pfree, "Pages freed by exiting processes"); 357 VM_STATS_VM(v_tfree, "Total pages freed"); 358 VM_STATS_VM(v_forks, "Number of fork() calls"); 359 VM_STATS_VM(v_vforks, "Number of vfork() calls"); 360 VM_STATS_VM(v_rforks, "Number of rfork() calls"); 361 VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel"); 362 VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); 363 VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); 364 VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); 365 VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); 366 367 static int 368 sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS) 369 { 370 u_int (*fn)(void); 371 uint32_t val; 372 373 fn = arg1; 374 val = fn(); 375 return (SYSCTL_OUT(req, &val, sizeof(val))); 376 } 377 378 #define VM_STATS_PROC(var, descr, fn) \ 379 SYSCTL_OID(_vm_stats_vm, OID_AUTO, var, CTLTYPE_U32 | CTLFLAG_MPSAFE | \ 380 CTLFLAG_RD, fn, 0, sysctl_handle_vmstat_proc, "IU", descr) 381 382 #define VM_STATS_UINT(var, descr) \ 383 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) 384 #define VM_STATS_ULONG(var, descr) \ 385 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) 386 387 VM_STATS_UINT(v_page_size, "Page size in bytes"); 388 VM_STATS_UINT(v_page_count, "Total number of pages in system"); 389 VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock"); 390 VM_STATS_UINT(v_free_target, "Pages desired free"); 391 VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold"); 392 VM_STATS_PROC(v_free_count, "Free pages", vm_free_count); 393 VM_STATS_PROC(v_wire_count, "Wired pages", vm_wire_count); 394 VM_STATS_PROC(v_active_count, "Active pages", vm_active_count); 395 VM_STATS_UINT(v_inactive_target, "Desired inactive pages"); 396 VM_STATS_PROC(v_inactive_count, "Inactive pages", vm_inactive_count); 397 VM_STATS_PROC(v_laundry_count, "Pages eligible for laundering", 398 vm_laundry_count); 399 VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel"); 400 VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code"); 401 VM_STATS_UINT(v_free_severe, "Severe page depletion point"); 402 403 SYSCTL_ULONG(_vm_stats_vm, OID_AUTO, v_user_wire_count, CTLFLAG_RD, 404 &vm_user_wire_count, 0, "User-wired virtual memory"); 405 406 #ifdef COMPAT_FREEBSD11 407 /* 408 * Provide compatibility sysctls for the benefit of old utilities which exit 409 * with an error if they cannot be found. 410 */ 411 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, 412 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 413 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, 414 SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); 415 #endif 416 417 u_int 418 vm_free_count(void) 419 { 420 u_int v; 421 int i; 422 423 v = 0; 424 for (i = 0; i < vm_ndomains; i++) 425 v += vm_dom[i].vmd_free_count; 426 427 return (v); 428 } 429 430 static u_int 431 vm_pagequeue_count(int pq) 432 { 433 u_int v; 434 int i; 435 436 v = 0; 437 for (i = 0; i < vm_ndomains; i++) 438 v += vm_dom[i].vmd_pagequeues[pq].pq_cnt; 439 440 return (v); 441 } 442 443 u_int 444 vm_active_count(void) 445 { 446 447 return (vm_pagequeue_count(PQ_ACTIVE)); 448 } 449 450 u_int 451 vm_inactive_count(void) 452 { 453 454 return (vm_pagequeue_count(PQ_INACTIVE)); 455 } 456 457 u_int 458 vm_laundry_count(void) 459 { 460 461 return (vm_pagequeue_count(PQ_LAUNDRY)); 462 } 463 464 static int 465 sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS) 466 { 467 struct vm_pagequeue *pq; 468 uint64_t ret; 469 int dom, i; 470 471 ret = counter_u64_fetch(vm_cnt.v_pdpages); 472 for (dom = 0; dom < vm_ndomains; dom++) 473 for (i = 0; i < PQ_COUNT; i++) { 474 pq = &VM_DOMAIN(dom)->vmd_pagequeues[i]; 475 ret += pq->pq_pdpages; 476 } 477 return (SYSCTL_OUT(req, &ret, sizeof(ret))); 478 } 479 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, 480 CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU", 481 "Pages analyzed by pagedaemon"); 482 483 static void 484 vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent) 485 { 486 struct sysctl_oid *oid; 487 488 vmd->vmd_oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(parent), OID_AUTO, 489 vmd->vmd_name, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 490 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(vmd->vmd_oid), OID_AUTO, 491 "stats", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 492 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 493 "free_count", CTLFLAG_RD, &vmd->vmd_free_count, 0, 494 "Free pages"); 495 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 496 "active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0, 497 "Active pages"); 498 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 499 "actpdpgs", CTLFLAG_RD, 500 &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0, 501 "Active pages scanned by the page daemon"); 502 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 503 "inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0, 504 "Inactive pages"); 505 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 506 "inactpdpgs", CTLFLAG_RD, 507 &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0, 508 "Inactive pages scanned by the page daemon"); 509 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 510 "laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0, 511 "laundry pages"); 512 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 513 "laundpdpgs", CTLFLAG_RD, 514 &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0, 515 "Laundry pages scanned by the page daemon"); 516 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable", 517 CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0, 518 "Unswappable pages"); 519 SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 520 "unswppdpgs", CTLFLAG_RD, 521 &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0, 522 "Unswappable pages scanned by the page daemon"); 523 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 524 "inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0, 525 "Target inactive pages"); 526 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 527 "free_target", CTLFLAG_RD, &vmd->vmd_free_target, 0, 528 "Target free pages"); 529 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 530 "free_reserved", CTLFLAG_RD, &vmd->vmd_free_reserved, 0, 531 "Reserved free pages"); 532 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 533 "free_min", CTLFLAG_RD, &vmd->vmd_free_min, 0, 534 "Minimum free pages"); 535 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 536 "free_severe", CTLFLAG_RD, &vmd->vmd_free_severe, 0, 537 "Severe free pages"); 538 SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, 539 "inactive_pps", CTLFLAG_RD, &vmd->vmd_inactive_pps, 0, 540 "inactive pages freed/second"); 541 542 } 543 544 static void 545 vm_stats_init(void *arg __unused) 546 { 547 struct sysctl_oid *oid; 548 int i; 549 550 oid = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO, 551 "domain", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); 552 for (i = 0; i < vm_ndomains; i++) 553 vm_domain_stats_init(VM_DOMAIN(i), oid); 554 } 555 556 SYSINIT(vmstats_init, SI_SUB_VM_CONF, SI_ORDER_FIRST, vm_stats_init, NULL); 557