uvm_meter.c revision 1.55
1 /* $NetBSD: uvm_meter.c,v 1.55 2010/12/20 00:25:48 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Charles D. Cranor and Washington University. 5 * Copyright (c) 1982, 1986, 1989, 1993 6 * The Regents of the University of California. 7 * 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Charles D. Cranor, 21 * Washington University, and the University of California, Berkeley 22 * and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 40 * from: Id: uvm_meter.c,v 1.1.2.1 1997/08/14 19:10:35 chuck Exp 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.55 2010/12/20 00:25:48 matt Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/cpu.h> 49 #include <sys/proc.h> 50 #include <sys/kernel.h> 51 #include <sys/sysctl.h> 52 53 #include <uvm/uvm.h> 54 #include <uvm/uvm_pdpolicy.h> 55 56 /* 57 * maxslp: ???? XXXCDC 58 */ 59 60 int maxslp = MAXSLP; /* patchable ... */ 61 struct loadavg averunnable; 62 63 static void uvm_total(struct vmtotal *); 64 65 /* 66 * sysctl helper routine for the vm.vmmeter node. 67 */ 68 static int 69 sysctl_vm_meter(SYSCTLFN_ARGS) 70 { 71 struct sysctlnode node; 72 struct vmtotal vmtotals; 73 74 node = *rnode; 75 node.sysctl_data = &vmtotals; 76 uvm_total(&vmtotals); 77 78 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 79 } 80 81 /* 82 * sysctl helper routine for the vm.uvmexp node. 83 */ 84 static int 85 sysctl_vm_uvmexp(SYSCTLFN_ARGS) 86 { 87 struct sysctlnode node; 88 89 node = *rnode; 90 if (oldp) 91 node.sysctl_size = min(*oldlenp, node.sysctl_size); 92 93 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 94 } 95 96 static int 97 sysctl_vm_uvmexp2(SYSCTLFN_ARGS) 98 { 99 struct sysctlnode node; 100 struct uvmexp_sysctl u; 101 int active, inactive; 102 CPU_INFO_ITERATOR cii; 103 struct cpu_info *ci; 104 105 uvm_estimatepageable(&active, &inactive); 106 107 memset(&u, 0, sizeof(u)); 108 109 /* Entries here are in order of uvmexp_sysctl, not uvmexp */ 110 u.pagesize = uvmexp.pagesize; 111 u.pagemask = uvmexp.pagemask; 112 u.pageshift = uvmexp.pageshift; 113 u.npages = uvmexp.npages; 114 u.free = uvmexp.free; 115 u.active = active; 116 u.inactive = inactive; 117 u.paging = uvmexp.paging; 118 u.wired = uvmexp.wired; 119 u.zeropages = uvmexp.zeropages; 120 u.reserve_pagedaemon = uvmexp.reserve_pagedaemon; 121 u.reserve_kernel = uvmexp.reserve_kernel; 122 u.freemin = uvmexp.freemin; 123 u.freetarg = uvmexp.freetarg; 124 u.inactarg = 0; /* unused */ 125 u.wiredmax = uvmexp.wiredmax; 126 u.nswapdev = uvmexp.nswapdev; 127 u.swpages = uvmexp.swpages; 128 u.swpginuse = uvmexp.swpginuse; 129 u.swpgonly = uvmexp.swpgonly; 130 u.nswget = uvmexp.nswget; 131 for (CPU_INFO_FOREACH(cii, ci)) { 132 u.faults += ci->ci_data.cpu_nfault; 133 u.traps += ci->ci_data.cpu_ntrap; 134 u.intrs += ci->ci_data.cpu_nintr; 135 u.swtch += ci->ci_data.cpu_nswtch; 136 u.softs += ci->ci_data.cpu_nsoft; 137 u.syscalls += ci->ci_data.cpu_nsyscall; 138 } 139 u.pageins = uvmexp.pageins; 140 u.pgswapin = uvmexp.pgswapin; 141 u.pgswapout = uvmexp.pgswapout; 142 u.forks = uvmexp.forks; 143 u.forks_ppwait = uvmexp.forks_ppwait; 144 u.forks_sharevm = uvmexp.forks_sharevm; 145 u.pga_zerohit = uvmexp.pga_zerohit; 146 u.pga_zeromiss = uvmexp.pga_zeromiss; 147 u.zeroaborts = uvmexp.zeroaborts; 148 u.fltnoram = uvmexp.fltnoram; 149 u.fltnoanon = uvmexp.fltnoanon; 150 u.fltpgwait = uvmexp.fltpgwait; 151 u.fltpgrele = uvmexp.fltpgrele; 152 u.fltrelck = uvmexp.fltrelck; 153 u.fltrelckok = uvmexp.fltrelckok; 154 u.fltanget = uvmexp.fltanget; 155 u.fltanretry = uvmexp.fltanretry; 156 u.fltamcopy = uvmexp.fltamcopy; 157 u.fltnamap = uvmexp.fltnamap; 158 u.fltnomap = uvmexp.fltnomap; 159 u.fltlget = uvmexp.fltlget; 160 u.fltget = uvmexp.fltget; 161 u.flt_anon = uvmexp.flt_anon; 162 u.flt_acow = uvmexp.flt_acow; 163 u.flt_obj = uvmexp.flt_obj; 164 u.flt_prcopy = uvmexp.flt_prcopy; 165 u.flt_przero = uvmexp.flt_przero; 166 u.pdwoke = uvmexp.pdwoke; 167 u.pdrevs = uvmexp.pdrevs; 168 u.pdfreed = uvmexp.pdfreed; 169 u.pdscans = uvmexp.pdscans; 170 u.pdanscan = uvmexp.pdanscan; 171 u.pdobscan = uvmexp.pdobscan; 172 u.pdreact = uvmexp.pdreact; 173 u.pdbusy = uvmexp.pdbusy; 174 u.pdpageouts = uvmexp.pdpageouts; 175 u.pdpending = uvmexp.pdpending; 176 u.pddeact = uvmexp.pddeact; 177 u.anonpages = uvmexp.anonpages; 178 u.filepages = uvmexp.filepages; 179 u.execpages = uvmexp.execpages; 180 u.colorhit = uvmexp.colorhit; 181 u.colormiss = uvmexp.colormiss; 182 u.cpuhit = uvmexp.cpuhit; 183 u.cpumiss = uvmexp.cpumiss; 184 185 node = *rnode; 186 node.sysctl_data = &u; 187 node.sysctl_size = sizeof(u); 188 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 189 } 190 191 /* 192 * sysctl helper routine for uvm_pctparam. 193 */ 194 static int 195 uvm_sysctlpctparam(SYSCTLFN_ARGS) 196 { 197 int t, error; 198 struct sysctlnode node; 199 struct uvm_pctparam *pct; 200 201 pct = rnode->sysctl_data; 202 t = pct->pct_pct; 203 204 node = *rnode; 205 node.sysctl_data = &t; 206 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 207 if (error || newp == NULL) 208 return error; 209 210 if (t < 0 || t > 100) 211 return EINVAL; 212 213 error = uvm_pctparam_check(pct, t); 214 if (error) { 215 return error; 216 } 217 uvm_pctparam_set(pct, t); 218 219 return (0); 220 } 221 222 /* 223 * uvm_sysctl: sysctl hook into UVM system. 224 */ 225 SYSCTL_SETUP(sysctl_vm_setup, "sysctl vm subtree setup") 226 { 227 228 sysctl_createv(clog, 0, NULL, NULL, 229 CTLFLAG_PERMANENT, 230 CTLTYPE_NODE, "vm", NULL, 231 NULL, 0, NULL, 0, 232 CTL_VM, CTL_EOL); 233 sysctl_createv(clog, 0, NULL, NULL, 234 CTLFLAG_PERMANENT, 235 CTLTYPE_STRUCT, "vmmeter", 236 SYSCTL_DESCR("Simple system-wide virtual memory " 237 "statistics"), 238 sysctl_vm_meter, 0, NULL, sizeof(struct vmtotal), 239 CTL_VM, VM_METER, CTL_EOL); 240 sysctl_createv(clog, 0, NULL, NULL, 241 CTLFLAG_PERMANENT, 242 CTLTYPE_STRUCT, "loadavg", 243 SYSCTL_DESCR("System load average history"), 244 NULL, 0, &averunnable, sizeof(averunnable), 245 CTL_VM, VM_LOADAVG, CTL_EOL); 246 sysctl_createv(clog, 0, NULL, NULL, 247 CTLFLAG_PERMANENT, 248 CTLTYPE_STRUCT, "uvmexp", 249 SYSCTL_DESCR("Detailed system-wide virtual memory " 250 "statistics"), 251 sysctl_vm_uvmexp, 0, &uvmexp, sizeof(uvmexp), 252 CTL_VM, VM_UVMEXP, CTL_EOL); 253 sysctl_createv(clog, 0, NULL, NULL, 254 CTLFLAG_PERMANENT, 255 CTLTYPE_INT, "nkmempages", 256 SYSCTL_DESCR("Default number of pages in kmem_map"), 257 NULL, 0, &nkmempages, 0, 258 CTL_VM, VM_NKMEMPAGES, CTL_EOL); 259 sysctl_createv(clog, 0, NULL, NULL, 260 CTLFLAG_PERMANENT, 261 CTLTYPE_STRUCT, "uvmexp2", 262 SYSCTL_DESCR("Detailed system-wide virtual memory " 263 "statistics (MI)"), 264 sysctl_vm_uvmexp2, 0, NULL, 0, 265 CTL_VM, VM_UVMEXP2, CTL_EOL); 266 sysctl_createv(clog, 0, NULL, NULL, 267 CTLFLAG_PERMANENT, CTLTYPE_INT, "maxslp", 268 SYSCTL_DESCR("Maximum process sleep time before being " 269 "swapped"), 270 NULL, 0, &maxslp, 0, 271 CTL_VM, VM_MAXSLP, CTL_EOL); 272 sysctl_createv(clog, 0, NULL, NULL, 273 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 274 CTLTYPE_INT, "uspace", 275 SYSCTL_DESCR("Number of bytes allocated for a kernel " 276 "stack"), 277 NULL, USPACE, NULL, 0, 278 CTL_VM, VM_USPACE, CTL_EOL); 279 sysctl_createv(clog, 0, NULL, NULL, 280 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 281 CTLTYPE_BOOL, "idlezero", 282 SYSCTL_DESCR("Whether try to zero pages in idle loop"), 283 NULL, 0, &vm_page_zero_enable, 0, 284 CTL_VM, CTL_CREATE, CTL_EOL); 285 286 uvmpdpol_sysctlsetup(); 287 } 288 289 /* 290 * uvm_total: calculate the current state of the system. 291 */ 292 static void 293 uvm_total(struct vmtotal *totalp) 294 { 295 struct lwp *l; 296 #if 0 297 struct vm_map_entry * entry; 298 struct vm_map *map; 299 int paging; 300 #endif 301 int active; 302 303 memset(totalp, 0, sizeof *totalp); 304 305 /* 306 * calculate process statistics 307 */ 308 mutex_enter(proc_lock); 309 LIST_FOREACH(l, &alllwp, l_list) { 310 if (l->l_proc->p_flag & PK_SYSTEM) 311 continue; 312 switch (l->l_stat) { 313 case 0: 314 continue; 315 316 case LSSLEEP: 317 case LSSTOP: 318 if ((l->l_flag & LW_SINTR) == 0) { 319 totalp->t_dw++; 320 } else if (l->l_slptime < maxslp) { 321 totalp->t_sl++; 322 } 323 if (l->l_slptime >= maxslp) 324 continue; 325 break; 326 327 case LSRUN: 328 case LSONPROC: 329 case LSIDL: 330 totalp->t_rq++; 331 if (l->l_stat == LSIDL) 332 continue; 333 break; 334 } 335 /* 336 * note active objects 337 */ 338 #if 0 339 /* 340 * XXXCDC: BOGUS! rethink this. in the mean time 341 * don't do it. 342 */ 343 paging = 0; 344 vm_map_lock(map); 345 for (map = &p->p_vmspace->vm_map, entry = map->header.next; 346 entry != &map->header; entry = entry->next) { 347 if (entry->is_a_map || entry->is_sub_map || 348 entry->object.uvm_obj == NULL) 349 continue; 350 /* XXX how to do this with uvm */ 351 } 352 vm_map_unlock(map); 353 if (paging) 354 totalp->t_pw++; 355 #endif 356 } 357 mutex_exit(proc_lock); 358 359 /* 360 * Calculate object memory usage statistics. 361 */ 362 uvm_estimatepageable(&active, NULL); 363 totalp->t_free = uvmexp.free; 364 totalp->t_vm = uvmexp.npages - uvmexp.free + uvmexp.swpginuse; 365 totalp->t_avm = active + uvmexp.swpginuse; /* XXX */ 366 totalp->t_rm = uvmexp.npages - uvmexp.free; 367 totalp->t_arm = active; 368 totalp->t_vmshr = 0; /* XXX */ 369 totalp->t_avmshr = 0; /* XXX */ 370 totalp->t_rmshr = 0; /* XXX */ 371 totalp->t_armshr = 0; /* XXX */ 372 } 373 374 void 375 uvm_pctparam_set(struct uvm_pctparam *pct, int val) 376 { 377 378 pct->pct_pct = val; 379 pct->pct_scaled = val * UVM_PCTPARAM_SCALE / 100; 380 } 381 382 int 383 uvm_pctparam_get(struct uvm_pctparam *pct) 384 { 385 386 return pct->pct_pct; 387 } 388 389 int 390 uvm_pctparam_check(struct uvm_pctparam *pct, int val) 391 { 392 393 if (pct->pct_check == NULL) { 394 return 0; 395 } 396 return (*pct->pct_check)(pct, val); 397 } 398 399 void 400 uvm_pctparam_init(struct uvm_pctparam *pct, int val, 401 int (*fn)(struct uvm_pctparam *, int)) 402 { 403 404 pct->pct_check = fn; 405 uvm_pctparam_set(pct, val); 406 } 407 408 int 409 uvm_pctparam_createsysctlnode(struct uvm_pctparam *pct, const char *name, 410 const char *desc) 411 { 412 413 return sysctl_createv(NULL, 0, NULL, NULL, 414 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 415 CTLTYPE_INT, name, SYSCTL_DESCR(desc), 416 uvm_sysctlpctparam, 0, pct, 0, CTL_VM, CTL_CREATE, CTL_EOL); 417 } 418
Indexes created Wed Sep 24 05:09:52 GMT 2025