4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94
36 * $FreeBSD: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $
37 * $DragonFly: src/sys/vm/vm_meter.c,v 1.15 2008/04/28 18:04:08 dillon Exp $
40 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/resource.h>
45 #include <sys/vmmeter.h>
48 #include <vm/vm_page.h>
49 #include <vm/vm_extern.h>
50 #include <vm/vm_param.h>
53 #include <vm/vm_map.h>
54 #include <vm/vm_object.h>
55 #include <sys/sysctl.h>
57 struct vmstats vmstats;
59 static int maxslp = MAXSLP;
61 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
62 CTLFLAG_RW, &vmstats.v_free_min, 0, "");
63 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
64 CTLFLAG_RW, &vmstats.v_free_target, 0, "");
65 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
66 CTLFLAG_RW, &vmstats.v_free_reserved, 0, "");
67 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
68 CTLFLAG_RW, &vmstats.v_inactive_target, 0, "");
69 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
70 CTLFLAG_RW, &vmstats.v_cache_min, 0, "");
71 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
72 CTLFLAG_RW, &vmstats.v_cache_max, 0, "");
73 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
74 CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, "");
75 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
76 CTLFLAG_RW, &vmstats.v_free_severe, 0, "");
78 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
79 &averunnable, loadavg, "Machine loadaverage history");
81 static int do_vmtotal_callback(struct proc *p, void *data);
87 do_vmtotal(SYSCTL_HANDLER_ARGS)
90 struct vmtotal *totalp;
93 bzero(&total, sizeof(total));
97 * Mark all objects as inactive.
99 lwkt_gettoken(&vmobj_token);
100 for (object = TAILQ_FIRST(&vm_object_list);
102 object = TAILQ_NEXT(object,object_list)) {
103 if (object->type == OBJT_MARKER)
105 vm_object_clear_flag(object, OBJ_ACTIVE);
107 lwkt_reltoken(&vmobj_token);
110 * Calculate process statistics.
112 allproc_scan(do_vmtotal_callback, totalp);
115 * Calculate object memory usage statistics.
117 lwkt_gettoken(&vmobj_token);
118 for (object = TAILQ_FIRST(&vm_object_list);
120 object = TAILQ_NEXT(object, object_list)) {
122 * devices, like /dev/mem, will badly skew our totals.
123 * markers aren't real objects.
125 if (object->type == OBJT_MARKER)
127 if (object->type == OBJT_DEVICE)
129 totalp->t_vm += object->size;
130 totalp->t_rm += object->resident_page_count;
131 if (object->flags & OBJ_ACTIVE) {
132 totalp->t_avm += object->size;
133 totalp->t_arm += object->resident_page_count;
135 if (object->shadow_count > 1) {
137 totalp->t_vmshr += object->size;
138 totalp->t_rmshr += object->resident_page_count;
139 if (object->flags & OBJ_ACTIVE) {
140 totalp->t_avmshr += object->size;
141 totalp->t_armshr += object->resident_page_count;
145 lwkt_reltoken(&vmobj_token);
146 totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count;
148 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
152 * The caller must hold proc_token.
155 do_vmtotal_callback(struct proc *p, void *data)
157 struct vmtotal *totalp = data;
159 vm_map_entry_t entry;
163 if (p->p_flag & P_SYSTEM)
166 FOREACH_LWP_IN_PROC(lp, p) {
167 switch (lp->lwp_stat) {
170 if ((p->p_flag & P_SWAPPEDOUT) == 0) {
171 if ((lp->lwp_flag & LWP_SINTR) == 0)
173 else if (lp->lwp_slptime < maxslp)
175 } else if (lp->lwp_slptime < maxslp) {
178 if (lp->lwp_slptime >= maxslp)
183 if (p->p_flag & P_SWAPPEDOUT)
187 if (p->p_stat == SIDL)
197 * Note active objects.
200 lwkt_gettoken(&vm_token);
202 map = &p->p_vmspace->vm_map;
203 vm_map_lock_read(map);
204 for (entry = map->header.next;
205 entry != &map->header; entry = entry->next) {
206 if (entry->maptype != VM_MAPTYPE_NORMAL &&
207 entry->maptype != VM_MAPTYPE_VPAGETABLE) {
210 if (entry->object.vm_object == NULL)
212 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
213 paging |= entry->object.vm_object->paging_in_progress;
215 vm_map_unlock_read(map);
217 lwkt_reltoken(&vm_token);
227 do_vmstats(SYSCTL_HANDLER_ARGS)
229 struct vmstats vms = vmstats;
230 return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req));
237 do_vmmeter(SYSCTL_HANDLER_ARGS)
239 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin);
240 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end);
244 bzero(&vmm, sizeof(vmm));
245 for (i = 0; i < ncpus; ++i) {
247 struct globaldata *gd = globaldata_find(i);
249 for (off = boffset; off <= eoffset; off += sizeof(u_int)) {
250 *(u_int *)((char *)&vmm + off) +=
251 *(u_int *)((char *)&gd->gd_cnt + off);
255 vmm.v_intr += vmm.v_ipi + vmm.v_timer;
256 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req));
260 * vcnt() - accumulate statistics from the cnt structure for each cpu
262 * The vmmeter structure is now per-cpu as well as global. Those
263 * statistics which can be kept on a per-cpu basis (to avoid cache
264 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining
265 * statistics, such as v_free_reserved, are left in the global
268 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
273 vcnt(SYSCTL_HANDLER_ARGS)
279 for (i = 0; i < ncpus; ++i) {
280 struct globaldata *gd = globaldata_find(i);
281 count += *(int *)((char *)&gd->gd_cnt + offset);
283 return(SYSCTL_OUT(req, &count, sizeof(int)));
290 vcnt_intr(SYSCTL_HANDLER_ARGS)
295 for (i = 0; i < ncpus; ++i) {
296 struct globaldata *gd = globaldata_find(i);
298 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi +
301 return(SYSCTL_OUT(req, &count, sizeof(int)));
304 #define VMMETEROFF(var) offsetof(struct vmmeter, var)
306 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD,
307 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal",
308 "System virtual memory aggregate");
309 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD,
310 0, sizeof(struct vmstats), do_vmstats, "S,vmstats",
311 "System virtual memory statistics");
312 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
313 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter",
314 "System statistics");
315 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
316 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
317 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
318 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
320 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD,
321 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches");
322 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD,
323 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "");
324 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD,
325 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "");
326 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD,
327 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "");
328 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD,
329 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "");
330 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD,
331 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "");
332 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD,
333 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps");
334 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD,
335 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls");
336 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD,
337 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts");
338 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD,
339 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts");
340 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD,
341 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts");
342 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD,
343 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts");
344 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD,
345 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults");
346 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD,
347 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults");
348 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD,
349 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults");
350 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD,
351 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill");
352 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD,
353 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill");
354 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD,
355 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations");
356 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD,
357 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations");
358 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD,
359 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages");
360 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD,
361 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages");
362 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD,
363 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations");
364 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD,
365 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations");
366 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD,
367 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages");
368 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD,
369 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages");
370 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD,
371 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking");
372 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD,
373 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages");
374 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD,
375 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups");
376 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD,
377 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans");
378 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD,
379 0, VMMETEROFF(v_dfree), vcnt, "IU", "");
380 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD,
381 0, VMMETEROFF(v_pfree), vcnt, "IU", "");
382 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD,
383 0, VMMETEROFF(v_tfree), vcnt, "IU", "");
384 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD,
385 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls");
386 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD,
387 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls");
388 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD,
389 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls");
390 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD,
391 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel");
392 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD,
393 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()");
394 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD,
395 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()");
396 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD,
397 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()");
398 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD,
399 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel");
401 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
402 v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, "");
403 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
404 v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, "");
405 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
406 v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, "");
407 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
408 v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, "");
409 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
410 v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, "");
411 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
412 v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, "");
413 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
414 v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, "");
415 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
416 v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, "");
417 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
418 v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, "");
419 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
420 v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, "");
421 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
422 v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, "");
423 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
424 v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, "");
425 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
426 v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, "");
427 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
428 v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, "");
429 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
430 v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, "");
431 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
432 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
438 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS)
440 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin);
441 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end);
442 struct globaldata *gd = arg1;
446 bzero(&vmm, sizeof(vmm));
447 for (off = boffset; off <= eoffset; off += sizeof(u_int)) {
448 *(u_int *)((char *)&vmm + off) +=
449 *(u_int *)((char *)&gd->gd_cnt + off);
451 vmm.v_intr += vmm.v_ipi + vmm.v_timer;
452 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req));
456 * Called from the low level boot code only.
459 vmmeter_init(void *dummy __unused)
463 for (i = 0; i < ncpus; ++i) {
464 struct sysctl_ctx_list *ctx;
465 struct sysctl_oid *oid;
466 struct globaldata *gd;
469 ksnprintf(name, sizeof(name), "cpu%d", i);
471 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK);
472 sysctl_ctx_init(ctx);
473 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm),
474 OID_AUTO, name, CTLFLAG_RD, 0, "");
476 gd = globaldata_find(i);
477 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
478 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD,
479 gd, sizeof(struct vmmeter), do_vmmeter_pcpu,
480 "S,vmmeter", "System per-cpu statistics");
483 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0);