vm_meter.c revision 164437
175374Sbp/*- 275374Sbp * Copyright (c) 1982, 1986, 1989, 1993 375374Sbp * The Regents of the University of California. All rights reserved. 475374Sbp * 5124087Stjr * Redistribution and use in source and binary forms, with or without 6124087Stjr * modification, are permitted provided that the following conditions 7124087Stjr * are met: 875374Sbp * 1. Redistributions of source code must retain the above copyright 975374Sbp * notice, this list of conditions and the following disclaimer. 1075374Sbp * 2. Redistributions in binary form must reproduce the above copyright 1175374Sbp * notice, this list of conditions and the following disclaimer in the 1275374Sbp * documentation and/or other materials provided with the distribution. 1375374Sbp * 4. Neither the name of the University nor the names of its contributors 1475374Sbp * may be used to endorse or promote products derived from this software 1575374Sbp * without specific prior written permission. 1675374Sbp * 1775374Sbp * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1875374Sbp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1975374Sbp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2075374Sbp * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2175374Sbp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2275374Sbp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2375374Sbp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2475374Sbp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2575374Sbp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2675374Sbp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2775374Sbp * SUCH DAMAGE. 2875374Sbp * 2975374Sbp * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 3075374Sbp */ 3175374Sbp 3275374Sbp#include <sys/cdefs.h> 3375374Sbp__FBSDID("$FreeBSD: head/sys/vm/vm_meter.c 164437 2006-11-20 08:33:55Z ru $"); 3475374Sbp 35116189Sobrien#include <sys/param.h> 36116189Sobrien#include <sys/systm.h> 37116189Sobrien#include <sys/kernel.h> 38116189Sobrien#include <sys/lock.h> 3975374Sbp#include <sys/mutex.h> 4075374Sbp#include <sys/proc.h> 4175374Sbp#include <sys/resource.h> 4275374Sbp#include <sys/sx.h> 4375374Sbp#include <sys/vmmeter.h> 4475374Sbp#include <sys/smp.h> 4575374Sbp 4675374Sbp#include <vm/vm.h> 4775374Sbp#include <vm/vm_page.h> 4875374Sbp#include <vm/vm_extern.h> 49124087Stjr#include <vm/vm_param.h> 50124087Stjr#include <vm/pmap.h> 51124087Stjr#include <vm/vm_map.h> 5275374Sbp#include <vm/vm_object.h> 53124087Stjr#include <sys/sysctl.h> 5475374Sbp 5575374Sbpstruct vmmeter cnt; 5675374Sbp 5775374Sbpint maxslp = MAXSLP; 5875374Sbp 59124087StjrSYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 6075374Sbp CTLFLAG_RW, &cnt.v_free_min, 0, ""); 6175374SbpSYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 6275374Sbp CTLFLAG_RW, &cnt.v_free_target, 0, ""); 6375374SbpSYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 6475374Sbp CTLFLAG_RW, &cnt.v_free_reserved, 0, ""); 6575374SbpSYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 6675374Sbp CTLFLAG_RW, &cnt.v_inactive_target, 0, ""); 6775374SbpSYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 6875374Sbp CTLFLAG_RW, &cnt.v_cache_min, 0, ""); 6975374SbpSYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 7075374Sbp CTLFLAG_RW, &cnt.v_cache_max, 0, ""); 7175374SbpSYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 7275374Sbp CTLFLAG_RW, &cnt.v_pageout_free_min, 0, ""); 7375374SbpSYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 7475374Sbp CTLFLAG_RW, &cnt.v_free_severe, 0, ""); 7575374Sbp 7675374Sbpstatic int 7775374Sbpsysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) 7875374Sbp{ 7975374Sbp#ifdef SCTL_MASK32 8075374Sbp u_int32_t la[4]; 8175374Sbp 8275374Sbp if (req->flags & SCTL_MASK32) { 8375374Sbp la[0] = averunnable.ldavg[0]; 8475374Sbp la[1] = averunnable.ldavg[1]; 85111119Simp la[2] = averunnable.ldavg[2]; 8678064Sume la[3] = averunnable.fscale; 8778064Sume return SYSCTL_OUT(req, la, sizeof(la)); 8875374Sbp } else 8975374Sbp#endif 9075374Sbp return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); 9175374Sbp} 9275374SbpSYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT|CTLFLAG_RD, 9375374Sbp NULL, 0, sysctl_vm_loadavg, "S,loadavg", "Machine loadaverage history"); 9475374Sbp 9575374Sbpstatic int 9675374Sbpvmtotal(SYSCTL_HANDLER_ARGS) 9775374Sbp{ 9875374Sbp/* XXXKSE almost completely broken */ 99111119Simp struct proc *p; 10075374Sbp struct vmtotal total; 10175374Sbp vm_map_entry_t entry; 10275374Sbp vm_object_t object; 10375374Sbp vm_map_t map; 10475374Sbp int paging; 10575374Sbp struct thread *td; 10675374Sbp struct vmspace *vm; 10775374Sbp 10875374Sbp bzero(&total, sizeof(total)); 10975374Sbp /* 11075374Sbp * Mark all objects as inactive. 11175374Sbp */ 11275374Sbp GIANT_REQUIRED; 11375374Sbp mtx_lock(&vm_object_list_mtx); 11475374Sbp TAILQ_FOREACH(object, &vm_object_list, object_list) { 11575374Sbp if (!VM_OBJECT_TRYLOCK(object)) { 11675374Sbp /* 11775374Sbp * Avoid a lock-order reversal. Consequently, 11875374Sbp * the reported number of active pages may be 11975374Sbp * greater than the actual number. 12075374Sbp */ 12175374Sbp continue; 12275374Sbp } 12375374Sbp vm_object_clear_flag(object, OBJ_ACTIVE); 12475374Sbp VM_OBJECT_UNLOCK(object); 12575374Sbp } 12675374Sbp mtx_unlock(&vm_object_list_mtx); 12775374Sbp /* 12875374Sbp * Calculate process statistics. 12975374Sbp */ 13075374Sbp sx_slock(&allproc_lock); 13175374Sbp FOREACH_PROC_IN_SYSTEM(p) { 132111119Simp if (p->p_flag & P_SYSTEM) 13375374Sbp continue; 13475374Sbp mtx_lock_spin(&sched_lock); 13575374Sbp switch (p->p_state) { 13675374Sbp case PRS_NEW: 137111119Simp mtx_unlock_spin(&sched_lock); 13875374Sbp continue; 13975374Sbp break; 14075374Sbp default: 14175374Sbp FOREACH_THREAD_IN_PROC(p, td) { 14275374Sbp /* Need new statistics XXX */ 14375374Sbp switch (td->td_state) { 14475374Sbp case TDS_INHIBITED: 14575374Sbp if (TD_ON_LOCK(td) || 14675374Sbp (td->td_inhibitors == 14775374Sbp TDI_SWAPPED)) { 14875374Sbp total.t_sw++; 14975374Sbp } else if (TD_IS_SLEEPING(td) || 15075374Sbp TD_AWAITING_INTR(td) || 15175374Sbp TD_IS_SUSPENDED(td)) { 15275374Sbp if (td->td_priority <= PZERO) 15375374Sbp total.t_dw++; 15475374Sbp else 15575374Sbp total.t_sl++; 156124087Stjr } 157124087Stjr break; 158124087Stjr 159124087Stjr case TDS_CAN_RUN: 160124087Stjr total.t_sw++; 161124087Stjr break; 162124087Stjr case TDS_RUNQ: 163124087Stjr case TDS_RUNNING: 164124087Stjr total.t_rq++; 165124087Stjr continue; 166124087Stjr default: 167124087Stjr break; 168124087Stjr } 169124087Stjr } 170124087Stjr } 171124087Stjr mtx_unlock_spin(&sched_lock); 172124087Stjr /* 173124087Stjr * Note active objects. 174124087Stjr */ 175124087Stjr paging = 0; 176124087Stjr vm = vmspace_acquire_ref(p); 177124087Stjr if (vm == NULL) 178124087Stjr continue; 179124087Stjr map = &vm->vm_map; 180124087Stjr vm_map_lock_read(map); 181124087Stjr for (entry = map->header.next; 182124087Stjr entry != &map->header; entry = entry->next) { 183124087Stjr if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) || 184124087Stjr (object = entry->object.vm_object) == NULL) 185124087Stjr continue; 186124087Stjr VM_OBJECT_LOCK(object); 187124087Stjr vm_object_set_flag(object, OBJ_ACTIVE); 188124087Stjr paging |= object->paging_in_progress; 189124087Stjr VM_OBJECT_UNLOCK(object); 190124087Stjr } 191124087Stjr vm_map_unlock_read(map); 192124087Stjr vmspace_free(vm); 193124087Stjr if (paging) 194124087Stjr total.t_pw++; 195124087Stjr } 196124087Stjr sx_sunlock(&allproc_lock); 197124087Stjr /* 198124087Stjr * Calculate object memory usage statistics. 199124087Stjr */ 200124087Stjr mtx_lock(&vm_object_list_mtx); 201124087Stjr TAILQ_FOREACH(object, &vm_object_list, object_list) { 202124087Stjr /* 203124087Stjr * Perform unsynchronized reads on the object to avoid 204124087Stjr * a lock-order reversal. In this case, the lack of 205124087Stjr * synchronization should not impair the accuracy of 206124087Stjr * the reported statistics. 207124087Stjr */ 208124087Stjr if (object->type == OBJT_DEVICE) { 209124087Stjr /* 210124087Stjr * Devices, like /dev/mem, will badly skew our totals. 211124087Stjr */ 212124087Stjr continue; 213124087Stjr } 214124087Stjr if (object->ref_count == 0) { 215124087Stjr /* 216124087Stjr * Also skip unreferenced objects, including 217124087Stjr * vnodes representing mounted file systems. 218124087Stjr */ 219124087Stjr continue; 220124087Stjr } 221124087Stjr total.t_vm += object->size; 222124087Stjr total.t_rm += object->resident_page_count; 223124087Stjr if (object->flags & OBJ_ACTIVE) { 224124087Stjr total.t_avm += object->size; 225124087Stjr total.t_arm += object->resident_page_count; 226124087Stjr } 227124087Stjr if (object->shadow_count > 1) { 228124087Stjr /* shared object */ 229124087Stjr total.t_vmshr += object->size; 230124087Stjr total.t_rmshr += object->resident_page_count; 231124087Stjr if (object->flags & OBJ_ACTIVE) { 232124087Stjr total.t_avmshr += object->size; 233124087Stjr total.t_armshr += object->resident_page_count; 234124087Stjr } 235124087Stjr } 236124087Stjr } 237124087Stjr mtx_unlock(&vm_object_list_mtx); 238124087Stjr total.t_free = cnt.v_free_count + cnt.v_cache_count; 239124087Stjr return (sysctl_handle_opaque(oidp, &total, sizeof(total), req)); 240124087Stjr} 241124087Stjr 242124087Stjr/* 243124087Stjr * vcnt() - accumulate statistics from all cpus and the global cnt 244124087Stjr * structure. 245124087Stjr * 246124087Stjr * The vmmeter structure is now per-cpu as well as global. Those 247124087Stjr * statistics which can be kept on a per-cpu basis (to avoid cache 248124087Stjr * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 249124087Stjr * statistics, such as v_free_reserved, are left in the global 250124087Stjr * structure. 251124087Stjr * 252124087Stjr * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 253124087Stjr */ 254124087Stjrstatic int 255124087Stjrvcnt(SYSCTL_HANDLER_ARGS) 256124087Stjr{ 257124087Stjr int count = *(int *)arg1; 258124087Stjr int offset = (char *)arg1 - (char *)&cnt; 259124087Stjr#ifdef SMP 260124087Stjr int i; 261124087Stjr 262124087Stjr for (i = 0; i < mp_ncpus; ++i) { 263124087Stjr struct pcpu *pcpu = pcpu_find(i); 264124087Stjr count += *(int *)((char *)&pcpu->pc_cnt + offset); 265124087Stjr } 266124087Stjr#else 267124087Stjr count += *(int *)((char *)PCPU_PTR(cnt) + offset); 268124087Stjr#endif 269124087Stjr return (SYSCTL_OUT(req, &count, sizeof(int))); 270124087Stjr} 271124087Stjr 272124087StjrSYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 273124087Stjr 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal", 274124087Stjr "System virtual memory statistics"); 275124087StjrSYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 276124087Stjrstatic SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, 277124087Stjr "VM meter sys stats"); 278124087Stjrstatic SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, 279124087Stjr "VM meter vm stats"); 280124087StjrSYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 281124087Stjr 282124087StjrSYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 283124087Stjr &cnt.v_swtch, 0, vcnt, "IU", "Context switches"); 284124087StjrSYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 285124087Stjr &cnt.v_trap, 0, vcnt, "IU", "Traps"); 286124087StjrSYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 287124087Stjr &cnt.v_syscall, 0, vcnt, "IU", "Syscalls"); 288124087StjrSYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 289124087Stjr &cnt.v_intr, 0, vcnt, "IU", "Hardware interrupts"); 290124087StjrSYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 291124087Stjr &cnt.v_soft, 0, vcnt, "IU", "Software interrupts"); 292124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 293124087Stjr &cnt.v_vm_faults, 0, vcnt, "IU", "VM faults"); 294124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 295124087Stjr &cnt.v_cow_faults, 0, vcnt, "IU", "COW faults"); 296124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 297124087Stjr &cnt.v_cow_optim, 0, vcnt, "IU", "Optimized COW faults"); 298124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 299124087Stjr &cnt.v_zfod, 0, vcnt, "IU", "Zero fill"); 300124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 301124087Stjr &cnt.v_ozfod, 0, vcnt, "IU", "Optimized zero fill"); 302124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 303124087Stjr &cnt.v_swapin, 0, vcnt, "IU", "Swapin operations"); 304124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 305124087Stjr &cnt.v_swapout, 0, vcnt, "IU", "Swapout operations"); 306124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 307124087Stjr &cnt.v_swappgsin, 0, vcnt, "IU", "Swapin pages"); 308124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 309124087Stjr &cnt.v_swappgsout, 0, vcnt, "IU", "Swapout pages"); 310124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 311124087Stjr &cnt.v_vnodein, 0, vcnt, "IU", "Vnodein operations"); 312124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 313124087Stjr &cnt.v_vnodeout, 0, vcnt, "IU", "Vnodeout operations"); 314124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 315124087Stjr &cnt.v_vnodepgsin, 0, vcnt, "IU", "Vnodein pages"); 316124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 317124087Stjr &cnt.v_vnodepgsout, 0, vcnt, "IU", "Vnodeout pages"); 318124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 319124087Stjr &cnt.v_intrans, 0, vcnt, "IU", "In transit page blocking"); 320124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 321124087Stjr &cnt.v_reactivated, 0, vcnt, "IU", "Reactivated pages"); 322124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 323124087Stjr &cnt.v_pdwakeups, 0, vcnt, "IU", "Pagedaemon wakeups"); 324124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 325124087Stjr &cnt.v_pdpages, 0, vcnt, "IU", "Pagedaemon page scans"); 326124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 327124087Stjr &cnt.v_dfree, 0, vcnt, "IU", ""); 328124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 329124087Stjr &cnt.v_pfree, 0, vcnt, "IU", ""); 330124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 331124087Stjr &cnt.v_tfree, 0, vcnt, "IU", ""); 332124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_size, CTLTYPE_UINT|CTLFLAG_RD, 333124087Stjr &cnt.v_page_size, 0, vcnt, "IU", ""); 334124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_count, CTLTYPE_UINT|CTLFLAG_RD, 335124087Stjr &cnt.v_page_count, 0, vcnt, "IU", ""); 336124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_reserved, CTLTYPE_UINT|CTLFLAG_RD, 337124087Stjr &cnt.v_free_reserved, 0, vcnt, "IU", ""); 338124087StjrSYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_target, CTLTYPE_UINT|CTLFLAG_RD, 339124087Stjr &cnt.v_free_target, 0, vcnt, "IU", ""); 340SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_min, CTLTYPE_UINT|CTLFLAG_RD, 341 &cnt.v_free_min, 0, vcnt, "IU", ""); 342SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_count, CTLTYPE_UINT|CTLFLAG_RD, 343 &cnt.v_free_count, 0, vcnt, "IU", ""); 344SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_wire_count, CTLTYPE_UINT|CTLFLAG_RD, 345 &cnt.v_wire_count, 0, vcnt, "IU", ""); 346SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_active_count, CTLTYPE_UINT|CTLFLAG_RD, 347 &cnt.v_active_count, 0, vcnt, "IU", ""); 348SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_target, CTLTYPE_UINT|CTLFLAG_RD, 349 &cnt.v_inactive_target, 0, vcnt, "IU", ""); 350SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_count, CTLTYPE_UINT|CTLFLAG_RD, 351 &cnt.v_inactive_count, 0, vcnt, "IU", ""); 352SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_count, CTLTYPE_UINT|CTLFLAG_RD, 353 &cnt.v_cache_count, 0, vcnt, "IU", ""); 354SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_min, CTLTYPE_UINT|CTLFLAG_RD, 355 &cnt.v_cache_min, 0, vcnt, "IU", ""); 356SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_max, CTLTYPE_UINT|CTLFLAG_RD, 357 &cnt.v_cache_max, 0, vcnt, "IU", ""); 358SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pageout_free_min, CTLTYPE_UINT|CTLFLAG_RD, 359 &cnt.v_pageout_free_min, 0, vcnt, "IU", ""); 360SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_interrupt_free_min, CTLTYPE_UINT|CTLFLAG_RD, 361 &cnt.v_interrupt_free_min, 0, vcnt, "IU", ""); 362SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 363 &cnt.v_forks, 0, vcnt, "IU", "Number of fork() calls"); 364SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 365 &cnt.v_vforks, 0, vcnt, "IU", "Number of vfork() calls"); 366SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 367 &cnt.v_rforks, 0, vcnt, "IU", "Number of rfork() calls"); 368SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 369 &cnt.v_kthreads, 0, vcnt, "IU", "Number of fork() calls by kernel"); 370SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 371 &cnt.v_forkpages, 0, vcnt, "IU", "VM pages affected by fork()"); 372SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 373 &cnt.v_vforkpages, 0, vcnt, "IU", "VM pages affected by vfork()"); 374SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 375 &cnt.v_rforkpages, 0, vcnt, "IU", "VM pages affected by rfork()"); 376SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 377 &cnt.v_kthreadpages, 0, vcnt, "IU", "VM pages affected by fork() by kernel"); 378 379SYSCTL_INT(_vm_stats_misc, OID_AUTO, 380 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, ""); 381#if 0 382SYSCTL_INT(_vm_stats_misc, OID_AUTO, 383 page_mask, CTLFLAG_RD, &page_mask, 0, ""); 384SYSCTL_INT(_vm_stats_misc, OID_AUTO, 385 page_shift, CTLFLAG_RD, &page_shift, 0, ""); 386SYSCTL_INT(_vm_stats_misc, OID_AUTO, 387 first_page, CTLFLAG_RD, &first_page, 0, ""); 388SYSCTL_INT(_vm_stats_misc, OID_AUTO, 389 last_page, CTLFLAG_RD, &last_page, 0, ""); 390#endif 391