/* * (MPSAFE) * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 * $FreeBSD: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $ * $DragonFly: src/sys/vm/vm_meter.c,v 1.15 2008/04/28 18:04:08 dillon Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct vmstats vmstats; static int maxslp = MAXSLP; SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, CTLFLAG_RW, &vmstats.v_free_min, 0, "Minimum number of pages desired free"); SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, CTLFLAG_RW, &vmstats.v_free_target, 0, "Number of pages desired free"); SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, CTLFLAG_RW, &vmstats.v_free_reserved, 0, "Number of pages reserved for deadlock"); SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, CTLFLAG_RW, &vmstats.v_inactive_target, 0, "Number of pages desired inactive"); SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, CTLFLAG_RW, &vmstats.v_cache_min, 0, "Min number of pages desired on cache queue"); SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, CTLFLAG_RW, &vmstats.v_cache_max, 0, "Max number of pages in cached obj"); SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, "Min number pages reserved for kernel"); SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, CTLFLAG_RW, &vmstats.v_free_severe, 0, ""); SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD, &averunnable, loadavg, "Machine loadaverage history"); static int do_vmtotal_callback(struct proc *p, void *data); /* * No requirements. */ static int do_vmtotal(SYSCTL_HANDLER_ARGS) { struct vmtotal total; struct vmtotal *totalp; vm_object_t object; bzero(&total, sizeof(total)); totalp = &total; /* * Mark all objects as inactive. */ lwkt_gettoken(&vmobj_token); for (object = TAILQ_FIRST(&vm_object_list); object != NULL; object = TAILQ_NEXT(object,object_list)) { if (object->type == OBJT_MARKER) continue; vm_object_clear_flag(object, OBJ_ACTIVE); } lwkt_reltoken(&vmobj_token); /* * Calculate process statistics. */ allproc_scan(do_vmtotal_callback, totalp); /* * Calculate object memory usage statistics. */ lwkt_gettoken(&vmobj_token); for (object = TAILQ_FIRST(&vm_object_list); object != NULL; object = TAILQ_NEXT(object, object_list)) { /* * devices, like /dev/mem, will badly skew our totals. * markers aren't real objects. */ if (object->type == OBJT_MARKER) continue; if (object->type == OBJT_DEVICE) continue; if (object->size >= 0x7FFFFFFF) { /* * Probably unbounded anonymous memory (really * bounded by related vm_map_entry structures which * we do not have access to in this loop). */ totalp->t_vm += object->resident_page_count; } else { /* * It's questionable how useful this is but... */ totalp->t_vm += object->size; } totalp->t_rm += object->resident_page_count; if (object->flags & OBJ_ACTIVE) { totalp->t_avm += object->size; totalp->t_arm += object->resident_page_count; } if (object->shadow_count > 1) { /* shared object */ totalp->t_vmshr += object->size; totalp->t_rmshr += object->resident_page_count; if (object->flags & OBJ_ACTIVE) { totalp->t_avmshr += object->size; totalp->t_armshr += object->resident_page_count; } } } lwkt_reltoken(&vmobj_token); totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count; return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); } /* * The caller must hold proc_token. */ static int do_vmtotal_callback(struct proc *p, void *data) { struct vmtotal *totalp = data; struct lwp *lp; if (p->p_flags & P_SYSTEM) return(0); FOREACH_LWP_IN_PROC(lp, p) { switch (lp->lwp_stat) { case LSSTOP: case LSSLEEP: if ((p->p_flags & P_SWAPPEDOUT) == 0) { if ((lp->lwp_flags & LWP_SINTR) == 0) totalp->t_dw++; else if (lp->lwp_slptime < maxslp) totalp->t_sl++; } else if (lp->lwp_slptime < maxslp) { totalp->t_sw++; } if (lp->lwp_slptime >= maxslp) return(0); break; case LSRUN: if (p->p_flags & P_SWAPPEDOUT) totalp->t_sw++; else totalp->t_rq++; if (p->p_stat == SIDL) return(0); break; default: return (0); } /* * Set while in vm_fault() */ if (lp->lwp_flags & LWP_PAGING) totalp->t_pw++; } return(0); } /* * No requirements. */ static int do_vmstats(SYSCTL_HANDLER_ARGS) { struct vmstats vms = vmstats; return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req)); } /* * No requirements. */ static int do_vmmeter(SYSCTL_HANDLER_ARGS) { int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); struct vmmeter vmm; int i; bzero(&vmm, sizeof(vmm)); for (i = 0; i < ncpus; ++i) { int off; struct globaldata *gd = globaldata_find(i); for (off = boffset; off <= eoffset; off += sizeof(u_int)) { *(u_int *)((char *)&vmm + off) += *(u_int *)((char *)&gd->gd_cnt + off); } } vmm.v_intr += vmm.v_ipi + vmm.v_timer; return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); } /* * vcnt() - accumulate statistics from the cnt structure for each cpu * * The vmmeter structure is now per-cpu as well as global. Those * statistics which can be kept on a per-cpu basis (to avoid cache * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining * statistics, such as v_free_reserved, are left in the global * structure. * * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) * * No requirements. */ static int vcnt(SYSCTL_HANDLER_ARGS) { int i; int count = 0; int offset = arg2; for (i = 0; i < ncpus; ++i) { struct globaldata *gd = globaldata_find(i); count += *(int *)((char *)&gd->gd_cnt + offset); } return(SYSCTL_OUT(req, &count, sizeof(int))); } /* * No requirements. */ static int vcnt_intr(SYSCTL_HANDLER_ARGS) { int i; int count = 0; for (i = 0; i < ncpus; ++i) { struct globaldata *gd = globaldata_find(i); count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi + gd->gd_cnt.v_timer; } return(SYSCTL_OUT(req, &count, sizeof(int))); } #define VMMETEROFF(var) offsetof(struct vmmeter, var) SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal", "System virtual memory aggregate"); SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD, 0, sizeof(struct vmstats), do_vmstats, "S,vmstats", "System virtual memory statistics"); SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter", "System statistics"); SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 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"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "Intransit map collisions (total)"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "Intransit map collisions which blocked"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "Forwarded interrupts due to MP lock"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "Forwarded hits due to MP lock"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "Forwarded misses due to MP lock"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts"); SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ppwakeups, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_ppwakeups), vcnt, "IU", "vm_wait wakeups"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_dfree), vcnt, "IU", "Pages freed by daemon"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_pfree), vcnt, "IU", "Pages freed by exiting processes"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_tfree), vcnt, "IU", "Total pages freed"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()"); SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, "Page size in bytes"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, "Total number of pages in system"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, "Number of pages reserved for deadlock"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, "Number of pages desired free"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, "Minimum number of pages desired free"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, "Number of pages free"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, "Number of pages wired down"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, "Number of pages active"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, "Number of pages desired inactive"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, "Number of pages inactive"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, "Number of pages on buffer cache queue"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, "Min number of pages desired on cache queue"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, "Max number of pages in cached obj"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, "Min number pages reserved for kernel"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, "Reserved number of pages for int code"); SYSCTL_INT(_vm_stats_misc, OID_AUTO, zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "Number of zeroing pages"); /* * No requirements. */ static int do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS) { int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); struct globaldata *gd = arg1; struct vmmeter vmm; int off; bzero(&vmm, sizeof(vmm)); for (off = boffset; off <= eoffset; off += sizeof(u_int)) { *(u_int *)((char *)&vmm + off) += *(u_int *)((char *)&gd->gd_cnt + off); } vmm.v_intr += vmm.v_ipi + vmm.v_timer; return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); } /* * Called from the low level boot code only. */ static void vmmeter_init(void *dummy __unused) { int i; for (i = 0; i < ncpus; ++i) { struct sysctl_ctx_list *ctx; struct sysctl_oid *oid; struct globaldata *gd; char name[32]; ksnprintf(name, sizeof(name), "cpu%d", i); ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK); sysctl_ctx_init(ctx); oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm), OID_AUTO, name, CTLFLAG_RD, 0, ""); gd = globaldata_find(i); SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD, gd, sizeof(struct vmmeter), do_vmmeter_pcpu, "S,vmmeter", "System per-cpu statistics"); } } SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0);