sys/vm/vm_meter.c

   1 /*
   2  * Copyright (c) 1982, 1986, 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)vm_meter.c  8.4 (Berkeley) 1/4/94
  34  * $FreeBSD: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $
  35  * $DragonFly: src/sys/vm/vm_meter.c,v 1.15 2008/04/28 18:04:08 dillon Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/proc.h>
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/resource.h>
  43 #include <sys/vmmeter.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 <sys/lock.h>
  50 #include <vm/pmap.h>
  51 #include <vm/vm_map.h>
  52 #include <vm/vm_object.h>
  53 #include <sys/sysctl.h>
  54
  55 struct vmstats vmstats;
  56
  57 static int maxslp = MAXSLP;
  58
  59 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
  60         CTLFLAG_RW, &vmstats.v_free_min, 0, "");
  61 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
  62         CTLFLAG_RW, &vmstats.v_free_target, 0, "");
  63 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
  64         CTLFLAG_RW, &vmstats.v_free_reserved, 0, "");
  65 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
  66         CTLFLAG_RW, &vmstats.v_inactive_target, 0, "");
  67 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
  68         CTLFLAG_RW, &vmstats.v_cache_min, 0, "");
  69 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
  70         CTLFLAG_RW, &vmstats.v_cache_max, 0, "");
  71 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
  72         CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, "");
  73 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
  74         CTLFLAG_RW, &vmstats.v_free_severe, 0, "");
  75
  76 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
  77     &averunnable, loadavg, "Machine loadaverage history");
  78
  79 static int do_vmtotal_callback(struct proc *p, void *data);
  80
  81 static int
  82 do_vmtotal(SYSCTL_HANDLER_ARGS)
  83 {
  84         struct vmtotal total;
  85         struct vmtotal *totalp;
  86         vm_object_t object;
  87
  88         totalp = &total;
  89         bzero(totalp, sizeof *totalp);
  90
  91         /*
  92          * Mark all objects as inactive.
  93          */
  94         for (object = TAILQ_FIRST(&vm_object_list);
  95             object != NULL;
  96             object = TAILQ_NEXT(object,object_list)) {
  97                 if (object->type == OBJT_MARKER)
  98                         continue;
  99                 vm_object_clear_flag(object, OBJ_ACTIVE);
 100         }
 101
 102         /*
 103          * Calculate process statistics.
 104          */
 105         allproc_scan(do_vmtotal_callback, totalp);
 106
 107         /*
 108          * Calculate object memory usage statistics.
 109          */
 110         for (object = TAILQ_FIRST(&vm_object_list);
 111             object != NULL;
 112             object = TAILQ_NEXT(object, object_list)) {
 113                 /*
 114                  * devices, like /dev/mem, will badly skew our totals.
 115                  * markers aren't real objects.
 116                  */
 117                 if (object->type == OBJT_MARKER)
 118                         continue;
 119                 if (object->type == OBJT_DEVICE)
 120                         continue;
 121                 totalp->t_vm += object->size;
 122                 totalp->t_rm += object->resident_page_count;
 123                 if (object->flags & OBJ_ACTIVE) {
 124                         totalp->t_avm += object->size;
 125                         totalp->t_arm += object->resident_page_count;
 126                 }
 127                 if (object->shadow_count > 1) {
 128                         /* shared object */
 129                         totalp->t_vmshr += object->size;
 130                         totalp->t_rmshr += object->resident_page_count;
 131                         if (object->flags & OBJ_ACTIVE) {
 132                                 totalp->t_avmshr += object->size;
 133                                 totalp->t_armshr += object->resident_page_count;
 134                         }
 135                 }
 136         }
 137         totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count;
 138         return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
 139 }
 140
 141 static int
 142 do_vmtotal_callback(struct proc *p, void *data)
 143 {
 144         struct vmtotal *totalp = data;
 145         struct lwp *lp;
 146         vm_map_entry_t entry;
 147         vm_map_t map;
 148         int paging;
 149
 150         if (p->p_flag & P_SYSTEM)
 151                 return(0);
 152
 153         FOREACH_LWP_IN_PROC(lp, p) {
 154                 switch (lp->lwp_stat) {
 155                 case LSSTOP:
 156                 case LSSLEEP:
 157                         if ((p->p_flag & P_SWAPPEDOUT) == 0) {
 158                                 if ((lp->lwp_flag & LWP_SINTR) == 0)
 159                                         totalp->t_dw++;
 160                                 else if (lp->lwp_slptime < maxslp)
 161                                         totalp->t_sl++;
 162                         } else if (lp->lwp_slptime < maxslp) {
 163                                 totalp->t_sw++;
 164                         }
 165                         if (lp->lwp_slptime >= maxslp)
 166                                 return(0);
 167                         break;
 168
 169                 case LSRUN:
 170                         if (p->p_flag & P_SWAPPEDOUT)
 171                                 totalp->t_sw++;
 172                         else
 173                                 totalp->t_rq++;
 174                         if (p->p_stat == SIDL)
 175                                 return(0);
 176                         break;
 177
 178                 default:
 179                         return (0);
 180                 }
 181         }
 182         /*
 183          * Note active objects.
 184          */
 185         paging = 0;
 186         if (p->p_vmspace) {
 187                 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
 188                     entry != &map->header; entry = entry->next) {
 189                         if (entry->maptype != VM_MAPTYPE_NORMAL &&
 190                             entry->maptype != VM_MAPTYPE_VPAGETABLE) {
 191                                 continue;
 192                         }
 193                         if (entry->object.vm_object == NULL)
 194                                 continue;
 195                         vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
 196                         paging |= entry->object.vm_object->paging_in_progress;
 197                 }
 198         }
 199         if (paging)
 200                 totalp->t_pw++;
 201         return(0);
 202 }
 203
 204
 205 static int
 206 do_vmstats(SYSCTL_HANDLER_ARGS)
 207 {
 208         struct vmstats vms = vmstats;
 209         return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req));
 210 }
 211
 212 static int
 213 do_vmmeter(SYSCTL_HANDLER_ARGS)
 214 {
 215         int boffset = offsetof(struct vmmeter, vmmeter_uint_begin);
 216         int eoffset = offsetof(struct vmmeter, vmmeter_uint_end);
 217         struct vmmeter vmm;
 218         int i;
 219
 220         bzero(&vmm, sizeof(vmm));
 221         for (i = 0; i < ncpus; ++i) {
 222                 int off;
 223                 struct globaldata *gd = globaldata_find(i);
 224
 225                 for (off = boffset; off <= eoffset; off += sizeof(u_int)) {
 226                         *(u_int *)((char *)&vmm + off) +=
 227                                 *(u_int *)((char *)&gd->gd_cnt + off);
 228                 }
 229
 230         }
 231         vmm.v_intr += vmm.v_ipi + vmm.v_timer;
 232         return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req));
 233 }
 234
 235 /*
 236  * vcnt() -     accumulate statistics from the cnt structure for each cpu
 237  *
 238  *      The vmmeter structure is now per-cpu as well as global.  Those
 239  *      statistics which can be kept on a per-cpu basis (to avoid cache
 240  *      stalls between cpus) can be moved to the per-cpu vmmeter.  Remaining
 241  *      statistics, such as v_free_reserved, are left in the global
 242  *      structure.
 243  *
 244  * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
 245  */
 246 static int
 247 vcnt(SYSCTL_HANDLER_ARGS)
 248 {
 249         int i;
 250         int count = 0;
 251         int offset = arg2;
 252
 253         for (i = 0; i < ncpus; ++i) {
 254                 struct globaldata *gd = globaldata_find(i);
 255                 count += *(int *)((char *)&gd->gd_cnt + offset);
 256         }
 257         return(SYSCTL_OUT(req, &count, sizeof(int)));
 258 }
 259
 260 static int
 261 vcnt_intr(SYSCTL_HANDLER_ARGS)
 262 {
 263         int i;
 264         int count = 0;
 265
 266         for (i = 0; i < ncpus; ++i) {
 267                 struct globaldata *gd = globaldata_find(i);
 268
 269                 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi +
 270                          gd->gd_cnt.v_timer;
 271         }
 272         return(SYSCTL_OUT(req, &count, sizeof(int)));
 273 }
 274
 275 #define VMMETEROFF(var) offsetof(struct vmmeter, var)
 276
 277 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD,
 278     0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal",
 279     "System virtual memory aggregate");
 280 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD,
 281     0, sizeof(struct vmstats), do_vmstats, "S,vmstats",
 282     "System virtual memory statistics");
 283 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
 284     0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter",
 285     "System statistics");
 286 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
 287 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
 288 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
 289 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
 290
 291 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD,
 292         0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches");
 293 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD,
 294         0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "");
 295 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD,
 296         0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "");
 297 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD,
 298         0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "");
 299 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD,
 300         0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "");
 301 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD,
 302         0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "");
 303 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD,
 304         0, VMMETEROFF(v_trap), vcnt, "IU", "Traps");
 305 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD,
 306         0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls");
 307 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD,
 308         0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts");
 309 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD,
 310         0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts");
 311 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD,
 312         0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts");
 313 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD,
 314         0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts");
 315 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD,
 316         0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults");
 317 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD,
 318         0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults");
 319 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD,
 320         0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults");
 321 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD,
 322         0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill");
 323 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD,
 324         0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill");
 325 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD,
 326         0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations");
 327 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD,
 328         0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations");
 329 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD,
 330         0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages");
 331 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD,
 332         0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages");
 333 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD,
 334         0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations");
 335 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD,
 336         0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations");
 337 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD,
 338         0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages");
 339 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD,
 340         0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages");
 341 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD,
 342         0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking");
 343 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD,
 344         0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages");
 345 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD,
 346         0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups");
 347 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD,
 348         0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans");
 349 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD,
 350         0, VMMETEROFF(v_dfree), vcnt, "IU", "");
 351 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD,
 352         0, VMMETEROFF(v_pfree), vcnt, "IU", "");
 353 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD,
 354         0, VMMETEROFF(v_tfree), vcnt, "IU", "");
 355 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD,
 356         0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls");
 357 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD,
 358         0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls");
 359 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD,
 360         0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls");
 361 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD,
 362         0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel");
 363 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD,
 364         0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()");
 365 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD,
 366         0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()");
 367 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD,
 368         0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()");
 369 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD,
 370         0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel");
 371
 372 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 373         v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, "");
 374 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 375         v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, "");
 376 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 377         v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, "");
 378 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 379         v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, "");
 380 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 381         v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, "");
 382 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 383         v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, "");
 384 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 385         v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, "");
 386 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 387         v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, "");
 388 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 389         v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, "");
 390 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 391         v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, "");
 392 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 393         v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, "");
 394 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 395         v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, "");
 396 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 397         v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, "");
 398 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 399         v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, "");
 400 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
 401         v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, "");
 402 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
 403         zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
 404
 405 static int
 406 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS)
 407 {
 408         int boffset = offsetof(struct vmmeter, vmmeter_uint_begin);
 409         int eoffset = offsetof(struct vmmeter, vmmeter_uint_end);
 410         struct globaldata *gd = arg1;
 411         struct vmmeter vmm;
 412         int off;
 413
 414         bzero(&vmm, sizeof(vmm));
 415         for (off = boffset; off <= eoffset; off += sizeof(u_int)) {
 416                 *(u_int *)((char *)&vmm + off) +=
 417                         *(u_int *)((char *)&gd->gd_cnt + off);
 418         }
 419         vmm.v_intr += vmm.v_ipi + vmm.v_timer;
 420         return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req));
 421 }
 422
 423 static void
 424 vmmeter_init(void *dummy __unused)
 425 {
 426         int i;
 427
 428         for (i = 0; i < ncpus; ++i) {
 429                 struct sysctl_ctx_list *ctx;
 430                 struct sysctl_oid *oid;
 431                 struct globaldata *gd;
 432                 char name[32];
 433
 434                 ksnprintf(name, sizeof(name), "cpu%d", i);
 435
 436                 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK);
 437                 sysctl_ctx_init(ctx);
 438                 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm),
 439                                       OID_AUTO, name, CTLFLAG_RD, 0, "");
 440
 441                 gd = globaldata_find(i);
 442                 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
 443                                 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD,
 444                                 gd, sizeof(struct vmmeter), do_vmmeter_pcpu,
 445                                 "S,vmmeter", "System per-cpu statistics");
 446         }
 447 }
 448 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0);