diff options
Diffstat (limited to 'freebsd/sys/vm/vm_meter.c')
| -rw-r--r-- | freebsd/sys/vm/vm_meter.c | 561 |
1 files changed, 561 insertions, 0 deletions
diff --git a/freebsd/sys/vm/vm_meter.c b/freebsd/sys/vm/vm_meter.c new file mode 100644 index 00000000..dfd50081 --- /dev/null +++ b/freebsd/sys/vm/vm_meter.c @@ -0,0 +1,561 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1982, 1986, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> +#include <sys/proc.h> +#include <sys/resource.h> +#include <sys/rwlock.h> +#include <sys/sx.h> +#include <sys/vmmeter.h> +#include <sys/smp.h> + +#include <vm/vm.h> +#include <vm/vm_page.h> +#include <vm/vm_extern.h> +#include <vm/vm_param.h> +#include <vm/vm_phys.h> +#include <vm/vm_pagequeue.h> +#include <vm/pmap.h> +#include <vm/vm_map.h> +#include <vm/vm_object.h> +#include <sys/sysctl.h> + +struct vmmeter __read_mostly vm_cnt = { + .v_swtch = EARLY_COUNTER, + .v_trap = EARLY_COUNTER, + .v_syscall = EARLY_COUNTER, + .v_intr = EARLY_COUNTER, + .v_soft = EARLY_COUNTER, + .v_vm_faults = EARLY_COUNTER, + .v_io_faults = EARLY_COUNTER, + .v_cow_faults = EARLY_COUNTER, + .v_cow_optim = EARLY_COUNTER, + .v_zfod = EARLY_COUNTER, + .v_ozfod = EARLY_COUNTER, + .v_swapin = EARLY_COUNTER, + .v_swapout = EARLY_COUNTER, + .v_swappgsin = EARLY_COUNTER, + .v_swappgsout = EARLY_COUNTER, + .v_vnodein = EARLY_COUNTER, + .v_vnodeout = EARLY_COUNTER, + .v_vnodepgsin = EARLY_COUNTER, + .v_vnodepgsout = EARLY_COUNTER, + .v_intrans = EARLY_COUNTER, + .v_reactivated = EARLY_COUNTER, + .v_pdwakeups = EARLY_COUNTER, + .v_pdpages = EARLY_COUNTER, + .v_pdshortfalls = EARLY_COUNTER, + .v_dfree = EARLY_COUNTER, + .v_pfree = EARLY_COUNTER, + .v_tfree = EARLY_COUNTER, + .v_forks = EARLY_COUNTER, + .v_vforks = EARLY_COUNTER, + .v_rforks = EARLY_COUNTER, + .v_kthreads = EARLY_COUNTER, + .v_forkpages = EARLY_COUNTER, + .v_vforkpages = EARLY_COUNTER, + .v_rforkpages = EARLY_COUNTER, + .v_kthreadpages = EARLY_COUNTER, + .v_wire_count = EARLY_COUNTER, +}; + +static void +vmcounter_startup(void) +{ + counter_u64_t *cnt = (counter_u64_t *)&vm_cnt; + + COUNTER_ARRAY_ALLOC(cnt, VM_METER_NCOUNTERS, M_WAITOK); +} +SYSINIT(counter, SI_SUB_KMEM, SI_ORDER_FIRST, vmcounter_startup, NULL); + +SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, + CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold"); +SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, + CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages"); +SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, + CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock"); +SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, + CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive"); +SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, + CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel"); +SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, + CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point"); + +static int +sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) +{ + +#ifdef SCTL_MASK32 + u_int32_t la[4]; + + if (req->flags & SCTL_MASK32) { + la[0] = averunnable.ldavg[0]; + la[1] = averunnable.ldavg[1]; + la[2] = averunnable.ldavg[2]; + la[3] = averunnable.fscale; + return SYSCTL_OUT(req, la, sizeof(la)); + } else +#endif + return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); +} +SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | + CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg", + "Machine loadaverage history"); + +/* + * This function aims to determine if the object is mapped, + * specifically, if it is referenced by a vm_map_entry. Because + * objects occasionally acquire transient references that do not + * represent a mapping, the method used here is inexact. However, it + * has very low overhead and is good enough for the advisory + * vm.vmtotal sysctl. + */ +static bool +is_object_active(vm_object_t obj) +{ + + return (obj->ref_count > obj->shadow_count); +} + +#if defined(COMPAT_FREEBSD11) +struct vmtotal11 { + int16_t t_rq; + int16_t t_dw; + int16_t t_pw; + int16_t t_sl; + int16_t t_sw; + int32_t t_vm; + int32_t t_avm; + int32_t t_rm; + int32_t t_arm; + int32_t t_vmshr; + int32_t t_avmshr; + int32_t t_rmshr; + int32_t t_armshr; + int32_t t_free; +}; +#endif + +static int +vmtotal(SYSCTL_HANDLER_ARGS) +{ + struct vmtotal total; +#if defined(COMPAT_FREEBSD11) + struct vmtotal11 total11; +#endif + vm_object_t object; + struct proc *p; + struct thread *td; + + if (req->oldptr == NULL) { +#if defined(COMPAT_FREEBSD11) + if (curproc->p_osrel < P_OSREL_VMTOTAL64) + return (SYSCTL_OUT(req, NULL, sizeof(total11))); +#endif + return (SYSCTL_OUT(req, NULL, sizeof(total))); + } + bzero(&total, sizeof(total)); + + /* + * Calculate process statistics. + */ + sx_slock(&allproc_lock); + FOREACH_PROC_IN_SYSTEM(p) { + if ((p->p_flag & P_SYSTEM) != 0) + continue; + PROC_LOCK(p); + if (p->p_state != PRS_NEW) { + FOREACH_THREAD_IN_PROC(p, td) { + thread_lock(td); + switch (td->td_state) { + case TDS_INHIBITED: + if (TD_IS_SWAPPED(td)) + total.t_sw++; + else if (TD_IS_SLEEPING(td)) { + if (td->td_priority <= PZERO) + total.t_dw++; + else + total.t_sl++; + } + break; + case TDS_CAN_RUN: + total.t_sw++; + break; + case TDS_RUNQ: + case TDS_RUNNING: + total.t_rq++; + break; + default: + break; + } + thread_unlock(td); + } + } + PROC_UNLOCK(p); + } + sx_sunlock(&allproc_lock); + /* + * Calculate object memory usage statistics. + */ + mtx_lock(&vm_object_list_mtx); + TAILQ_FOREACH(object, &vm_object_list, object_list) { + /* + * Perform unsynchronized reads on the object. In + * this case, the lack of synchronization should not + * impair the accuracy of the reported statistics. + */ + if ((object->flags & OBJ_FICTITIOUS) != 0) { + /* + * Devices, like /dev/mem, will badly skew our totals. + */ + continue; + } + if (object->ref_count == 0) { + /* + * Also skip unreferenced objects, including + * vnodes representing mounted file systems. + */ + continue; + } + if (object->ref_count == 1 && + (object->flags & OBJ_NOSPLIT) != 0) { + /* + * Also skip otherwise unreferenced swap + * objects backing tmpfs vnodes, and POSIX or + * SysV shared memory. + */ + continue; + } + total.t_vm += object->size; + total.t_rm += object->resident_page_count; + if (is_object_active(object)) { + total.t_avm += object->size; + total.t_arm += object->resident_page_count; + } + if (object->shadow_count > 1) { + /* shared object */ + total.t_vmshr += object->size; + total.t_rmshr += object->resident_page_count; + if (is_object_active(object)) { + total.t_avmshr += object->size; + total.t_armshr += object->resident_page_count; + } + } + } + mtx_unlock(&vm_object_list_mtx); + total.t_pw = vm_wait_count(); + total.t_free = vm_free_count(); +#if defined(COMPAT_FREEBSD11) + /* sysctl(8) allocates twice as much memory as reported by sysctl(3) */ + if (curproc->p_osrel < P_OSREL_VMTOTAL64 && (req->oldlen == + sizeof(total11) || req->oldlen == 2 * sizeof(total11))) { + bzero(&total11, sizeof(total11)); + total11.t_rq = total.t_rq; + total11.t_dw = total.t_dw; + total11.t_pw = total.t_pw; + total11.t_sl = total.t_sl; + total11.t_sw = total.t_sw; + total11.t_vm = total.t_vm; /* truncate */ + total11.t_avm = total.t_avm; /* truncate */ + total11.t_rm = total.t_rm; /* truncate */ + total11.t_arm = total.t_arm; /* truncate */ + total11.t_vmshr = total.t_vmshr; /* truncate */ + total11.t_avmshr = total.t_avmshr; /* truncate */ + total11.t_rmshr = total.t_rmshr; /* truncate */ + total11.t_armshr = total.t_armshr; /* truncate */ + total11.t_free = total.t_free; /* truncate */ + return (SYSCTL_OUT(req, &total11, sizeof(total11))); + } +#endif + return (SYSCTL_OUT(req, &total, sizeof(total))); +} + +SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE | CTLFLAG_RD | + CTLFLAG_MPSAFE, NULL, 0, vmtotal, "S,vmtotal", + "System virtual memory statistics"); +SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); +static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, + "VM meter sys stats"); +static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, + "VM meter vm stats"); +SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); + +static int +sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS) +{ + uint64_t val; +#ifdef COMPAT_FREEBSD11 + uint32_t val32; +#endif + + val = counter_u64_fetch(*(counter_u64_t *)arg1); +#ifdef COMPAT_FREEBSD11 + if (req->oldlen == sizeof(val32)) { + val32 = val; /* truncate */ + return (SYSCTL_OUT(req, &val32, sizeof(val32))); + } +#endif + return (SYSCTL_OUT(req, &val, sizeof(val))); +} + +#define VM_STATS(parent, var, descr) \ + SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \ + CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr) +#define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr) +#define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr) + +VM_STATS_SYS(v_swtch, "Context switches"); +VM_STATS_SYS(v_trap, "Traps"); +VM_STATS_SYS(v_syscall, "System calls"); +VM_STATS_SYS(v_intr, "Device interrupts"); +VM_STATS_SYS(v_soft, "Software interrupts"); +VM_STATS_VM(v_vm_faults, "Address memory faults"); +VM_STATS_VM(v_io_faults, "Page faults requiring I/O"); +VM_STATS_VM(v_cow_faults, "Copy-on-write faults"); +VM_STATS_VM(v_cow_optim, "Optimized COW faults"); +VM_STATS_VM(v_zfod, "Pages zero-filled on demand"); +VM_STATS_VM(v_ozfod, "Optimized zero fill pages"); +VM_STATS_VM(v_swapin, "Swap pager pageins"); +VM_STATS_VM(v_swapout, "Swap pager pageouts"); +VM_STATS_VM(v_swappgsin, "Swap pages swapped in"); +VM_STATS_VM(v_swappgsout, "Swap pages swapped out"); +VM_STATS_VM(v_vnodein, "Vnode pager pageins"); +VM_STATS_VM(v_vnodeout, "Vnode pager pageouts"); +VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in"); +VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out"); +VM_STATS_VM(v_intrans, "In transit page faults"); +VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon"); +VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups"); +VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls"); +VM_STATS_VM(v_dfree, "Pages freed by pagedaemon"); +VM_STATS_VM(v_pfree, "Pages freed by exiting processes"); +VM_STATS_VM(v_tfree, "Total pages freed"); +VM_STATS_VM(v_forks, "Number of fork() calls"); +VM_STATS_VM(v_vforks, "Number of vfork() calls"); +VM_STATS_VM(v_rforks, "Number of rfork() calls"); +VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel"); +VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); +VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); +VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); +VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); + +static int +sysctl_handle_vmstat_proc(SYSCTL_HANDLER_ARGS) +{ + u_int (*fn)(void); + uint32_t val; + + fn = arg1; + val = fn(); + return (SYSCTL_OUT(req, &val, sizeof(val))); +} + +#define VM_STATS_PROC(var, descr, fn) \ + SYSCTL_OID(_vm_stats_vm, OID_AUTO, var, CTLTYPE_U32 | CTLFLAG_MPSAFE | \ + CTLFLAG_RD, fn, 0, sysctl_handle_vmstat_proc, "IU", descr) + +#define VM_STATS_UINT(var, descr) \ + SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) + +VM_STATS_UINT(v_page_size, "Page size in bytes"); +VM_STATS_UINT(v_page_count, "Total number of pages in system"); +VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock"); +VM_STATS_UINT(v_free_target, "Pages desired free"); +VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold"); +VM_STATS_PROC(v_free_count, "Free pages", vm_free_count); +VM_STATS_PROC(v_wire_count, "Wired pages", vm_wire_count); +VM_STATS_PROC(v_active_count, "Active pages", vm_active_count); +VM_STATS_UINT(v_inactive_target, "Desired inactive pages"); +VM_STATS_PROC(v_inactive_count, "Inactive pages", vm_inactive_count); +VM_STATS_PROC(v_laundry_count, "Pages eligible for laundering", + vm_laundry_count); +VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel"); +VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code"); +VM_STATS_UINT(v_free_severe, "Severe page depletion point"); + +#ifdef COMPAT_FREEBSD11 +/* + * Provide compatibility sysctls for the benefit of old utilities which exit + * with an error if they cannot be found. + */ +SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, + SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); +SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, + SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); +#endif + +u_int +vm_free_count(void) +{ + u_int v; + int i; + + v = 0; + for (i = 0; i < vm_ndomains; i++) + v += vm_dom[i].vmd_free_count; + + return (v); +} + +static u_int +vm_pagequeue_count(int pq) +{ + u_int v; + int i; + + v = 0; + for (i = 0; i < vm_ndomains; i++) + v += vm_dom[i].vmd_pagequeues[pq].pq_cnt; + + return (v); +} + +u_int +vm_active_count(void) +{ + + return (vm_pagequeue_count(PQ_ACTIVE)); +} + +u_int +vm_inactive_count(void) +{ + + return (vm_pagequeue_count(PQ_INACTIVE)); +} + +u_int +vm_laundry_count(void) +{ + + return (vm_pagequeue_count(PQ_LAUNDRY)); +} + +static int +sysctl_vm_pdpages(SYSCTL_HANDLER_ARGS) +{ + struct vm_pagequeue *pq; + uint64_t ret; + int dom, i; + + ret = counter_u64_fetch(vm_cnt.v_pdpages); + for (dom = 0; dom < vm_ndomains; dom++) + for (i = 0; i < PQ_COUNT; i++) { + pq = &VM_DOMAIN(dom)->vmd_pagequeues[i]; + ret += pq->pq_pdpages; + } + return (SYSCTL_OUT(req, &ret, sizeof(ret))); +} +SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, + CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_RD, NULL, 0, sysctl_vm_pdpages, "QU", + "Pages analyzed by pagedaemon"); + +static void +vm_domain_stats_init(struct vm_domain *vmd, struct sysctl_oid *parent) +{ + struct sysctl_oid *oid; + + vmd->vmd_oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(parent), OID_AUTO, + vmd->vmd_name, CTLFLAG_RD, NULL, ""); + oid = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(vmd->vmd_oid), OID_AUTO, + "stats", CTLFLAG_RD, NULL, ""); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_count", CTLFLAG_RD, &vmd->vmd_free_count, 0, + "Free pages"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "active", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_cnt, 0, + "Active pages"); + SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "actpdpgs", CTLFLAG_RD, + &vmd->vmd_pagequeues[PQ_ACTIVE].pq_pdpages, 0, + "Active pages scanned by the page daemon"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "inactive", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_cnt, 0, + "Inactive pages"); + SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "inactpdpgs", CTLFLAG_RD, + &vmd->vmd_pagequeues[PQ_INACTIVE].pq_pdpages, 0, + "Inactive pages scanned by the page daemon"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "laundry", CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt, 0, + "laundry pages"); + SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "laundpdpgs", CTLFLAG_RD, + &vmd->vmd_pagequeues[PQ_LAUNDRY].pq_pdpages, 0, + "Laundry pages scanned by the page daemon"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "unswappable", + CTLFLAG_RD, &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_cnt, 0, + "Unswappable pages"); + SYSCTL_ADD_U64(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "unswppdpgs", CTLFLAG_RD, + &vmd->vmd_pagequeues[PQ_UNSWAPPABLE].pq_pdpages, 0, + "Unswappable pages scanned by the page daemon"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "inactive_target", CTLFLAG_RD, &vmd->vmd_inactive_target, 0, + "Target inactive pages"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_target", CTLFLAG_RD, &vmd->vmd_free_target, 0, + "Target free pages"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_reserved", CTLFLAG_RD, &vmd->vmd_free_reserved, 0, + "Reserved free pages"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_min", CTLFLAG_RD, &vmd->vmd_free_min, 0, + "Minimum free pages"); + SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_severe", CTLFLAG_RD, &vmd->vmd_free_severe, 0, + "Severe free pages"); + +} + +static void +vm_stats_init(void *arg __unused) +{ + struct sysctl_oid *oid; + int i; + + oid = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO, + "domain", CTLFLAG_RD, NULL, ""); + for (i = 0; i < vm_ndomains; i++) + vm_domain_stats_init(VM_DOMAIN(i), oid); +} + +SYSINIT(vmstats_init, SI_SUB_VM_CONF, SI_ORDER_FIRST, vm_stats_init, NULL); |