/* $NetBSD: uvm_meter.c,v 1.69 2019/01/07 22:48:01 jdolecek Exp $ */ /* * Copyright (c) 1997 Charles D. Cranor and Washington University. * 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 * from: Id: uvm_meter.c,v 1.1.2.1 1997/08/14 19:10:35 chuck Exp */ #include __KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.69 2019/01/07 22:48:01 jdolecek Exp $"); #include #include #include #include #include #include #include #include /* * maxslp: ???? XXXCDC */ int maxslp = MAXSLP; /* patchable ... */ struct loadavg averunnable; static void uvm_total(struct vmtotal *); /* * sysctl helper routine for the vm.vmmeter node. */ static int sysctl_vm_meter(SYSCTLFN_ARGS) { struct sysctlnode node; struct vmtotal vmtotals; node = *rnode; node.sysctl_data = &vmtotals; uvm_total(&vmtotals); return (sysctl_lookup(SYSCTLFN_CALL(&node))); } /* * sysctl helper routine for the vm.uvmexp node. */ static int sysctl_vm_uvmexp(SYSCTLFN_ARGS) { struct sysctlnode node; node = *rnode; if (oldlenp) node.sysctl_size = uimin(*oldlenp, node.sysctl_size); return (sysctl_lookup(SYSCTLFN_CALL(&node))); } static int sysctl_vm_uvmexp2(SYSCTLFN_ARGS) { struct sysctlnode node; struct uvmexp_sysctl u; int active, inactive; CPU_INFO_ITERATOR cii; struct cpu_info *ci; uvm_estimatepageable(&active, &inactive); memset(&u, 0, sizeof(u)); /* Entries here are in order of uvmexp_sysctl, not uvmexp */ u.pagesize = uvmexp.pagesize; u.pagemask = uvmexp.pagemask; u.pageshift = uvmexp.pageshift; u.npages = uvmexp.npages; u.free = uvmexp.free; u.active = active; u.inactive = inactive; u.paging = uvmexp.paging; u.wired = uvmexp.wired; u.zeropages = uvmexp.zeropages; u.reserve_pagedaemon = uvmexp.reserve_pagedaemon; u.reserve_kernel = uvmexp.reserve_kernel; u.freemin = uvmexp.freemin; u.freetarg = uvmexp.freetarg; u.inactarg = 0; /* unused */ u.wiredmax = uvmexp.wiredmax; u.nswapdev = uvmexp.nswapdev; u.swpages = uvmexp.swpages; u.swpginuse = uvmexp.swpginuse; u.swpgonly = uvmexp.swpgonly; u.nswget = uvmexp.nswget; u.cpuhit = uvmexp.cpuhit; u.cpumiss = uvmexp.cpumiss; for (CPU_INFO_FOREACH(cii, ci)) { u.faults += ci->ci_data.cpu_nfault; u.traps += ci->ci_data.cpu_ntrap; u.intrs += ci->ci_data.cpu_nintr; u.swtch += ci->ci_data.cpu_nswtch; u.softs += ci->ci_data.cpu_nsoft; u.syscalls += ci->ci_data.cpu_nsyscall; } u.pageins = uvmexp.pageins; u.pgswapin = uvmexp.pgswapin; u.pgswapout = uvmexp.pgswapout; u.forks = uvmexp.forks; u.forks_ppwait = uvmexp.forks_ppwait; u.forks_sharevm = uvmexp.forks_sharevm; u.pga_zerohit = uvmexp.pga_zerohit; u.pga_zeromiss = uvmexp.pga_zeromiss; u.zeroaborts = uvmexp.zeroaborts; u.fltnoram = uvmexp.fltnoram; u.fltnoanon = uvmexp.fltnoanon; u.fltpgwait = uvmexp.fltpgwait; u.fltpgrele = uvmexp.fltpgrele; u.fltrelck = uvmexp.fltrelck; u.fltrelckok = uvmexp.fltrelckok; u.fltanget = uvmexp.fltanget; u.fltanretry = uvmexp.fltanretry; u.fltamcopy = uvmexp.fltamcopy; u.fltnamap = uvmexp.fltnamap; u.fltnomap = uvmexp.fltnomap; u.fltlget = uvmexp.fltlget; u.fltget = uvmexp.fltget; u.flt_anon = uvmexp.flt_anon; u.flt_acow = uvmexp.flt_acow; u.flt_obj = uvmexp.flt_obj; u.flt_prcopy = uvmexp.flt_prcopy; u.flt_przero = uvmexp.flt_przero; u.pdwoke = uvmexp.pdwoke; u.pdrevs = uvmexp.pdrevs; u.pdfreed = uvmexp.pdfreed; u.pdscans = uvmexp.pdscans; u.pdanscan = uvmexp.pdanscan; u.pdobscan = uvmexp.pdobscan; u.pdreact = uvmexp.pdreact; u.pdbusy = uvmexp.pdbusy; u.pdpageouts = uvmexp.pdpageouts; u.pdpending = uvmexp.pdpending; u.pddeact = uvmexp.pddeact; u.anonpages = uvmexp.anonpages; u.filepages = uvmexp.filepages; u.execpages = uvmexp.execpages; u.colorhit = uvmexp.colorhit; u.colormiss = uvmexp.colormiss; u.ncolors = uvmexp.ncolors; u.bootpages = uvmexp.bootpages; u.poolpages = pool_totalpages(); node = *rnode; node.sysctl_data = &u; node.sysctl_size = sizeof(u); if (oldlenp) node.sysctl_size = uimin(*oldlenp, node.sysctl_size); return (sysctl_lookup(SYSCTLFN_CALL(&node))); } /* * sysctl helper routine for uvm_pctparam. */ static int uvm_sysctlpctparam(SYSCTLFN_ARGS) { int t, error; struct sysctlnode node; struct uvm_pctparam *pct; pct = rnode->sysctl_data; t = pct->pct_pct; node = *rnode; node.sysctl_data = &t; error = sysctl_lookup(SYSCTLFN_CALL(&node)); if (error || newp == NULL) return error; if (t < 0 || t > 100) return EINVAL; error = uvm_pctparam_check(pct, t); if (error) { return error; } uvm_pctparam_set(pct, t); return (0); } /* * uvm_sysctl: sysctl hook into UVM system. */ SYSCTL_SETUP(sysctl_vm_setup, "sysctl vm subtree setup") { sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_STRUCT, "vmmeter", SYSCTL_DESCR("Simple system-wide virtual memory " "statistics"), sysctl_vm_meter, 0, NULL, sizeof(struct vmtotal), CTL_VM, VM_METER, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_STRUCT, "loadavg", SYSCTL_DESCR("System load average history"), NULL, 0, &averunnable, sizeof(averunnable), CTL_VM, VM_LOADAVG, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_STRUCT, "uvmexp", SYSCTL_DESCR("Detailed system-wide virtual memory " "statistics"), sysctl_vm_uvmexp, 0, &uvmexp, sizeof(uvmexp), CTL_VM, VM_UVMEXP, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_STRUCT, "uvmexp2", SYSCTL_DESCR("Detailed system-wide virtual memory " "statistics (MI)"), sysctl_vm_uvmexp2, 0, NULL, 0, CTL_VM, VM_UVMEXP2, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_INT, "maxslp", SYSCTL_DESCR("Maximum process sleep time before being " "swapped"), NULL, 0, &maxslp, 0, CTL_VM, VM_MAXSLP, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, CTLTYPE_INT, "uspace", SYSCTL_DESCR("Number of bytes allocated for a kernel " "stack"), NULL, USPACE, NULL, 0, CTL_VM, VM_USPACE, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_BOOL, "idlezero", SYSCTL_DESCR("Whether try to zero pages in idle loop"), NULL, 0, &vm_page_zero_enable, 0, CTL_VM, CTL_CREATE, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, CTLTYPE_LONG, "minaddress", SYSCTL_DESCR("Minimum user address"), NULL, VM_MIN_ADDRESS, NULL, 0, CTL_VM, VM_MINADDRESS, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, CTLTYPE_LONG, "maxaddress", SYSCTL_DESCR("Maximum user address"), NULL, VM_MAX_ADDRESS, NULL, 0, CTL_VM, VM_MAXADDRESS, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_UNSIGNED, CTLTYPE_INT, "guard_size", SYSCTL_DESCR("Guard size of main thread"), NULL, 0, &user_stack_guard_size, 0, CTL_VM, VM_GUARD_SIZE, CTL_EOL); sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_UNSIGNED|CTLFLAG_READWRITE, CTLTYPE_INT, "thread_guard_size", SYSCTL_DESCR("Guard size of other threads"), NULL, 0, &user_thread_stack_guard_size, 0, CTL_VM, VM_THREAD_GUARD_SIZE, CTL_EOL); #ifdef PMAP_DIRECT sysctl_createv(clog, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_BOOL, "ubc_direct", SYSCTL_DESCR("Use direct map for UBC I/O"), NULL, 0, &ubc_direct, 0, CTL_VM, CTL_CREATE, CTL_EOL); #endif uvmpdpol_sysctlsetup(); } /* * uvm_total: calculate the current state of the system. */ static void uvm_total(struct vmtotal *totalp) { struct lwp *l; #if 0 struct vm_map_entry * entry; struct vm_map *map; int paging; #endif int active; memset(totalp, 0, sizeof *totalp); /* * calculate process statistics */ mutex_enter(proc_lock); LIST_FOREACH(l, &alllwp, l_list) { if (l->l_proc->p_flag & PK_SYSTEM) continue; switch (l->l_stat) { case 0: continue; case LSSLEEP: case LSSTOP: if ((l->l_flag & LW_SINTR) == 0) { totalp->t_dw++; } else if (l->l_slptime < maxslp) { totalp->t_sl++; } if (l->l_slptime >= maxslp) continue; break; case LSRUN: case LSONPROC: case LSIDL: totalp->t_rq++; if (l->l_stat == LSIDL) continue; break; } /* * note active objects */ #if 0 /* * XXXCDC: BOGUS! rethink this. in the mean time * don't do it. */ paging = 0; vm_map_lock(map); for (map = &p->p_vmspace->vm_map, entry = map->header.next; entry != &map->header; entry = entry->next) { if (entry->is_a_map || entry->is_sub_map || entry->object.uvm_obj == NULL) continue; /* XXX how to do this with uvm */ } vm_map_unlock(map); if (paging) totalp->t_pw++; #endif } mutex_exit(proc_lock); /* * Calculate object memory usage statistics. */ uvm_estimatepageable(&active, NULL); totalp->t_free = uvmexp.free; totalp->t_vm = uvmexp.npages - uvmexp.free + uvmexp.swpginuse; totalp->t_avm = active + uvmexp.swpginuse; /* XXX */ totalp->t_rm = uvmexp.npages - uvmexp.free; totalp->t_arm = active; totalp->t_vmshr = 0; /* XXX */ totalp->t_avmshr = 0; /* XXX */ totalp->t_rmshr = 0; /* XXX */ totalp->t_armshr = 0; /* XXX */ } void uvm_pctparam_set(struct uvm_pctparam *pct, int val) { pct->pct_pct = val; pct->pct_scaled = val * UVM_PCTPARAM_SCALE / 100; } int uvm_pctparam_get(struct uvm_pctparam *pct) { return pct->pct_pct; } int uvm_pctparam_check(struct uvm_pctparam *pct, int val) { if (pct->pct_check == NULL) { return 0; } return (*pct->pct_check)(pct, val); } void uvm_pctparam_init(struct uvm_pctparam *pct, int val, int (*fn)(struct uvm_pctparam *, int)) { pct->pct_check = fn; uvm_pctparam_set(pct, val); } int uvm_pctparam_createsysctlnode(struct uvm_pctparam *pct, const char *name, const char *desc) { return sysctl_createv(NULL, 0, NULL, NULL, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, name, SYSCTL_DESCR(desc), uvm_sysctlpctparam, 0, (void *)pct, 0, CTL_VM, CTL_CREATE, CTL_EOL); }