uvm_meter.c revision 1.73
1 /* $NetBSD: uvm_meter.c,v 1.73 2019/12/31 13:07:14 ad 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 35 * from: Id: uvm_meter.c,v 1.1.2.1 1997/08/14 19:10:35 chuck Exp 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.73 2019/12/31 13:07:14 ad Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/cpu.h> 44 #include <sys/proc.h> 45 #include <sys/kernel.h> 46 #include <sys/sysctl.h> 47 48 #include <uvm/uvm.h> 49 #include <uvm/uvm_pdpolicy.h> 50 51 /* 52 * maxslp: ???? XXXCDC 53 */ 54 55 int maxslp = MAXSLP; /* patchable ... */ 56 struct loadavg averunnable; 57 58 static void uvm_total(struct vmtotal *); 59 60 /* 61 * sysctl helper routine for the vm.vmmeter node. 62 */ 63 static int 64 sysctl_vm_meter(SYSCTLFN_ARGS) 65 { 66 struct sysctlnode node; 67 struct vmtotal vmtotals; 68 69 node = *rnode; 70 node.sysctl_data = &vmtotals; 71 uvm_total(&vmtotals); 72 73 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 74 } 75 76 /* 77 * sysctl helper routine for the vm.uvmexp node. 78 */ 79 static int 80 sysctl_vm_uvmexp(SYSCTLFN_ARGS) 81 { 82 struct sysctlnode node; 83 84 uvm_update_uvmexp(); 85 86 node = *rnode; 87 if (oldlenp) 88 node.sysctl_size = uimin(*oldlenp, node.sysctl_size); 89 90 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 91 } 92 93 static int 94 sysctl_vm_uvmexp2(SYSCTLFN_ARGS) 95 { 96 struct sysctlnode node; 97 struct uvmexp_sysctl u; 98 int active, inactive; 99 100 cpu_count_sync_all(); 101 uvm_estimatepageable(&active, &inactive); 102 103 memset(&u, 0, sizeof(u)); 104 105 /* Entries here are in order of uvmexp_sysctl, not uvmexp */ 106 u.pagesize = uvmexp.pagesize; 107 u.pagemask = uvmexp.pagemask; 108 u.pageshift = uvmexp.pageshift; 109 u.npages = uvmexp.npages; 110 u.free = uvm_availmem(); 111 u.active = active; 112 u.inactive = inactive; 113 u.paging = uvmexp.paging; 114 u.wired = uvmexp.wired; 115 u.zeropages = cpu_count_get(CPU_COUNT_ZEROPAGES); 116 u.reserve_pagedaemon = uvmexp.reserve_pagedaemon; 117 u.reserve_kernel = uvmexp.reserve_kernel; 118 u.freemin = uvmexp.freemin; 119 u.freetarg = uvmexp.freetarg; 120 u.inactarg = 0; /* unused */ 121 u.wiredmax = uvmexp.wiredmax; 122 u.nswapdev = uvmexp.nswapdev; 123 u.swpages = uvmexp.swpages; 124 u.swpginuse = uvmexp.swpginuse; 125 u.swpgonly = uvmexp.swpgonly; 126 u.nswget = uvmexp.nswget; 127 u.cpuhit = cpu_count_get(CPU_COUNT_CPUHIT); 128 u.cpumiss = cpu_count_get(CPU_COUNT_CPUMISS); 129 u.faults = cpu_count_get(CPU_COUNT_NFAULT); 130 u.traps = cpu_count_get(CPU_COUNT_NTRAP); 131 u.intrs = cpu_count_get(CPU_COUNT_NINTR); 132 u.swtch = cpu_count_get(CPU_COUNT_NSWTCH); 133 u.softs = cpu_count_get(CPU_COUNT_NSOFT); 134 u.syscalls = cpu_count_get(CPU_COUNT_NSYSCALL); 135 u.pageins = cpu_count_get(CPU_COUNT_PAGEINS); 136 u.pgswapin = 0; /* unused */ 137 u.pgswapout = uvmexp.pgswapout; 138 u.forks = cpu_count_get(CPU_COUNT_FORKS); 139 u.forks_ppwait = cpu_count_get(CPU_COUNT_FORKS_PPWAIT); 140 u.forks_sharevm = cpu_count_get(CPU_COUNT_FORKS_SHAREVM); 141 u.pga_zerohit = cpu_count_get(CPU_COUNT_PGA_ZEROHIT); 142 u.pga_zeromiss = cpu_count_get(CPU_COUNT_PGA_ZEROMISS); 143 u.zeroaborts = uvmexp.zeroaborts; 144 u.fltnoram = cpu_count_get(CPU_COUNT_FLTNORAM); 145 u.fltnoanon = cpu_count_get(CPU_COUNT_FLTNOANON); 146 u.fltpgwait = cpu_count_get(CPU_COUNT_FLTPGWAIT); 147 u.fltpgrele = cpu_count_get(CPU_COUNT_FLTPGRELE); 148 u.fltrelck = cpu_count_get(CPU_COUNT_FLTRELCK); 149 u.fltrelckok = cpu_count_get(CPU_COUNT_FLTRELCKOK); 150 u.fltanget = cpu_count_get(CPU_COUNT_FLTANGET); 151 u.fltanretry = cpu_count_get(CPU_COUNT_FLTANRETRY); 152 u.fltamcopy = cpu_count_get(CPU_COUNT_FLTAMCOPY); 153 u.fltnamap = cpu_count_get(CPU_COUNT_FLTNAMAP); 154 u.fltnomap = cpu_count_get(CPU_COUNT_FLTNOMAP); 155 u.fltlget = cpu_count_get(CPU_COUNT_FLTLGET); 156 u.fltget = cpu_count_get(CPU_COUNT_FLTGET); 157 u.flt_anon = cpu_count_get(CPU_COUNT_FLT_ANON); 158 u.flt_acow = cpu_count_get(CPU_COUNT_FLT_ACOW); 159 u.flt_obj = cpu_count_get(CPU_COUNT_FLT_OBJ); 160 u.flt_prcopy = cpu_count_get(CPU_COUNT_FLT_PRCOPY); 161 u.flt_przero = cpu_count_get(CPU_COUNT_FLT_PRZERO); 162 u.pdwoke = uvmexp.pdwoke; 163 u.pdrevs = uvmexp.pdrevs; 164 u.pdfreed = uvmexp.pdfreed; 165 u.pdscans = uvmexp.pdscans; 166 u.pdanscan = uvmexp.pdanscan; 167 u.pdobscan = uvmexp.pdobscan; 168 u.pdreact = uvmexp.pdreact; 169 u.pdbusy = uvmexp.pdbusy; 170 u.pdpageouts = uvmexp.pdpageouts; 171 u.pdpending = uvmexp.pdpending; 172 u.pddeact = uvmexp.pddeact; 173 u.anonpages = cpu_count_get(CPU_COUNT_ANONPAGES); 174 u.filepages = cpu_count_get(CPU_COUNT_FILEPAGES); 175 u.execpages = cpu_count_get(CPU_COUNT_EXECPAGES); 176 u.colorhit = cpu_count_get(CPU_COUNT_COLORHIT); 177 u.colormiss = cpu_count_get(CPU_COUNT_COLORMISS); 178 u.ncolors = uvmexp.ncolors; 179 u.bootpages = uvmexp.bootpages; 180 u.poolpages = pool_totalpages(); 181 u.countsyncone = cpu_count_get(CPU_COUNT_SYNC_ONE); 182 u.countsyncall = cpu_count_get(CPU_COUNT_SYNC_ALL); 183 184 node = *rnode; 185 node.sysctl_data = &u; 186 node.sysctl_size = sizeof(u); 187 if (oldlenp) 188 node.sysctl_size = uimin(*oldlenp, node.sysctl_size); 189 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 190 } 191 192 /* 193 * sysctl helper routine for uvm_pctparam. 194 */ 195 static int 196 uvm_sysctlpctparam(SYSCTLFN_ARGS) 197 { 198 int t, error; 199 struct sysctlnode node; 200 struct uvm_pctparam *pct; 201 202 pct = rnode->sysctl_data; 203 t = pct->pct_pct; 204 205 node = *rnode; 206 node.sysctl_data = &t; 207 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 208 if (error || newp == NULL) 209 return error; 210 211 if (t < 0 || t > 100) 212 return EINVAL; 213 214 error = uvm_pctparam_check(pct, t); 215 if (error) { 216 return error; 217 } 218 uvm_pctparam_set(pct, t); 219 220 return (0); 221 } 222 223 /* 224 * uvm_sysctl: sysctl hook into UVM system. 225 */ 226 SYSCTL_SETUP(sysctl_vm_setup, "sysctl vm subtree setup") 227 { 228 229 sysctl_createv(clog, 0, NULL, NULL, 230 CTLFLAG_PERMANENT, 231 CTLTYPE_STRUCT, "vmmeter", 232 SYSCTL_DESCR("Simple system-wide virtual memory " 233 "statistics"), 234 sysctl_vm_meter, 0, NULL, sizeof(struct vmtotal), 235 CTL_VM, VM_METER, CTL_EOL); 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT, 238 CTLTYPE_STRUCT, "loadavg", 239 SYSCTL_DESCR("System load average history"), 240 NULL, 0, &averunnable, sizeof(averunnable), 241 CTL_VM, VM_LOADAVG, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT, 244 CTLTYPE_STRUCT, "uvmexp", 245 SYSCTL_DESCR("Detailed system-wide virtual memory " 246 "statistics"), 247 sysctl_vm_uvmexp, 0, &uvmexp, sizeof(uvmexp), 248 CTL_VM, VM_UVMEXP, CTL_EOL); 249 sysctl_createv(clog, 0, NULL, NULL, 250 CTLFLAG_PERMANENT, 251 CTLTYPE_STRUCT, "uvmexp2", 252 SYSCTL_DESCR("Detailed system-wide virtual memory " 253 "statistics (MI)"), 254 sysctl_vm_uvmexp2, 0, NULL, 0, 255 CTL_VM, VM_UVMEXP2, CTL_EOL); 256 sysctl_createv(clog, 0, NULL, NULL, 257 CTLFLAG_PERMANENT, CTLTYPE_INT, "maxslp", 258 SYSCTL_DESCR("Maximum process sleep time before being " 259 "swapped"), 260 NULL, 0, &maxslp, 0, 261 CTL_VM, VM_MAXSLP, CTL_EOL); 262 sysctl_createv(clog, 0, NULL, NULL, 263 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 264 CTLTYPE_INT, "uspace", 265 SYSCTL_DESCR("Number of bytes allocated for a kernel " 266 "stack"), 267 NULL, USPACE, NULL, 0, 268 CTL_VM, VM_USPACE, CTL_EOL); 269 sysctl_createv(clog, 0, NULL, NULL, 270 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 271 CTLTYPE_BOOL, "idlezero", 272 SYSCTL_DESCR("Whether try to zero pages in idle loop"), 273 NULL, 0, &vm_page_zero_enable, 0, 274 CTL_VM, CTL_CREATE, CTL_EOL); 275 sysctl_createv(clog, 0, NULL, NULL, 276 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 277 CTLTYPE_LONG, "minaddress", 278 SYSCTL_DESCR("Minimum user address"), 279 NULL, VM_MIN_ADDRESS, NULL, 0, 280 CTL_VM, VM_MINADDRESS, CTL_EOL); 281 sysctl_createv(clog, 0, NULL, NULL, 282 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 283 CTLTYPE_LONG, "maxaddress", 284 SYSCTL_DESCR("Maximum user address"), 285 NULL, VM_MAX_ADDRESS, NULL, 0, 286 CTL_VM, VM_MAXADDRESS, CTL_EOL); 287 sysctl_createv(clog, 0, NULL, NULL, 288 CTLFLAG_PERMANENT|CTLFLAG_UNSIGNED, 289 CTLTYPE_INT, "guard_size", 290 SYSCTL_DESCR("Guard size of main thread"), 291 NULL, 0, &user_stack_guard_size, 0, 292 CTL_VM, VM_GUARD_SIZE, CTL_EOL); 293 sysctl_createv(clog, 0, NULL, NULL, 294 CTLFLAG_PERMANENT|CTLFLAG_UNSIGNED|CTLFLAG_READWRITE, 295 CTLTYPE_INT, "thread_guard_size", 296 SYSCTL_DESCR("Guard size of other threads"), 297 NULL, 0, &user_thread_stack_guard_size, 0, 298 CTL_VM, VM_THREAD_GUARD_SIZE, CTL_EOL); 299 #ifdef PMAP_DIRECT 300 sysctl_createv(clog, 0, NULL, NULL, 301 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 302 CTLTYPE_BOOL, "ubc_direct", 303 SYSCTL_DESCR("Use direct map for UBC I/O"), 304 NULL, 0, &ubc_direct, 0, 305 CTL_VM, CTL_CREATE, CTL_EOL); 306 #endif 307 308 uvmpdpol_sysctlsetup(); 309 } 310 311 /* 312 * uvm_total: calculate the current state of the system. 313 */ 314 static void 315 uvm_total(struct vmtotal *totalp) 316 { 317 struct lwp *l; 318 #if 0 319 struct vm_map_entry * entry; 320 struct vm_map *map; 321 int paging; 322 #endif 323 int freepg; 324 int active; 325 326 memset(totalp, 0, sizeof *totalp); 327 328 /* 329 * calculate process statistics 330 */ 331 mutex_enter(proc_lock); 332 LIST_FOREACH(l, &alllwp, l_list) { 333 if (l->l_proc->p_flag & PK_SYSTEM) 334 continue; 335 switch (l->l_stat) { 336 case 0: 337 continue; 338 339 case LSSLEEP: 340 case LSSTOP: 341 if ((l->l_flag & LW_SINTR) == 0) { 342 totalp->t_dw++; 343 } else if (l->l_slptime < maxslp) { 344 totalp->t_sl++; 345 } 346 if (l->l_slptime >= maxslp) 347 continue; 348 break; 349 350 case LSRUN: 351 case LSONPROC: 352 case LSIDL: 353 totalp->t_rq++; 354 if (l->l_stat == LSIDL) 355 continue; 356 break; 357 } 358 /* 359 * note active objects 360 */ 361 #if 0 362 /* 363 * XXXCDC: BOGUS! rethink this. in the mean time 364 * don't do it. 365 */ 366 paging = 0; 367 vm_map_lock(map); 368 for (map = &p->p_vmspace->vm_map, entry = map->header.next; 369 entry != &map->header; entry = entry->next) { 370 if (entry->is_a_map || entry->is_sub_map || 371 entry->object.uvm_obj == NULL) 372 continue; 373 /* XXX how to do this with uvm */ 374 } 375 vm_map_unlock(map); 376 if (paging) 377 totalp->t_pw++; 378 #endif 379 } 380 mutex_exit(proc_lock); 381 382 /* 383 * Calculate object memory usage statistics. 384 */ 385 freepg = uvm_availmem(); 386 uvm_estimatepageable(&active, NULL); 387 totalp->t_free = freepg; 388 totalp->t_vm = uvmexp.npages - freepg + uvmexp.swpginuse; 389 totalp->t_avm = active + uvmexp.swpginuse; /* XXX */ 390 totalp->t_rm = uvmexp.npages - freepg; 391 totalp->t_arm = active; 392 totalp->t_vmshr = 0; /* XXX */ 393 totalp->t_avmshr = 0; /* XXX */ 394 totalp->t_rmshr = 0; /* XXX */ 395 totalp->t_armshr = 0; /* XXX */ 396 } 397 398 void 399 uvm_pctparam_set(struct uvm_pctparam *pct, int val) 400 { 401 402 pct->pct_pct = val; 403 pct->pct_scaled = val * UVM_PCTPARAM_SCALE / 100; 404 } 405 406 int 407 uvm_pctparam_get(struct uvm_pctparam *pct) 408 { 409 410 return pct->pct_pct; 411 } 412 413 int 414 uvm_pctparam_check(struct uvm_pctparam *pct, int val) 415 { 416 417 if (pct->pct_check == NULL) { 418 return 0; 419 } 420 return (*pct->pct_check)(pct, val); 421 } 422 423 void 424 uvm_pctparam_init(struct uvm_pctparam *pct, int val, 425 int (*fn)(struct uvm_pctparam *, int)) 426 { 427 428 pct->pct_check = fn; 429 uvm_pctparam_set(pct, val); 430 } 431 432 int 433 uvm_pctparam_createsysctlnode(struct uvm_pctparam *pct, const char *name, 434 const char *desc) 435 { 436 437 return sysctl_createv(NULL, 0, NULL, NULL, 438 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 439 CTLTYPE_INT, name, SYSCTL_DESCR(desc), 440 uvm_sysctlpctparam, 0, (void *)pct, 0, CTL_VM, CTL_CREATE, CTL_EOL); 441 } 442 443 /* 444 * Update uvmexp with aggregate values from the per-CPU counters. 445 */ 446 void 447 uvm_update_uvmexp(void) 448 { 449 450 cpu_count_sync_all(); 451 452 uvmexp.free = (int)uvm_availmem(); 453 uvmexp.zeropages = (int)cpu_count_get(CPU_COUNT_ZEROPAGES); 454 uvmexp.cpuhit = (int)cpu_count_get(CPU_COUNT_CPUHIT); 455 uvmexp.cpumiss = (int)cpu_count_get(CPU_COUNT_CPUMISS); 456 uvmexp.faults = (int)cpu_count_get(CPU_COUNT_NFAULT); 457 uvmexp.traps = (int)cpu_count_get(CPU_COUNT_NTRAP); 458 uvmexp.intrs = (int)cpu_count_get(CPU_COUNT_NINTR); 459 uvmexp.swtch = (int)cpu_count_get(CPU_COUNT_NSWTCH); 460 uvmexp.softs = (int)cpu_count_get(CPU_COUNT_NSOFT); 461 uvmexp.syscalls = (int)cpu_count_get(CPU_COUNT_NSYSCALL); 462 uvmexp.pageins = (int)cpu_count_get(CPU_COUNT_PAGEINS); 463 uvmexp.forks = (int)cpu_count_get(CPU_COUNT_FORKS); 464 uvmexp.forks_ppwait = (int)cpu_count_get(CPU_COUNT_FORKS_PPWAIT); 465 uvmexp.forks_sharevm = (int)cpu_count_get(CPU_COUNT_FORKS_SHAREVM); 466 uvmexp.pga_zerohit = (int)cpu_count_get(CPU_COUNT_PGA_ZEROHIT); 467 uvmexp.pga_zeromiss = (int)cpu_count_get(CPU_COUNT_PGA_ZEROMISS); 468 uvmexp.fltnoram = (int)cpu_count_get(CPU_COUNT_FLTNORAM); 469 uvmexp.fltnoanon = (int)cpu_count_get(CPU_COUNT_FLTNOANON); 470 uvmexp.fltpgwait = (int)cpu_count_get(CPU_COUNT_FLTPGWAIT); 471 uvmexp.fltpgrele = (int)cpu_count_get(CPU_COUNT_FLTPGRELE); 472 uvmexp.fltrelck = (int)cpu_count_get(CPU_COUNT_FLTRELCK); 473 uvmexp.fltrelckok = (int)cpu_count_get(CPU_COUNT_FLTRELCKOK); 474 uvmexp.fltanget = (int)cpu_count_get(CPU_COUNT_FLTANGET); 475 uvmexp.fltanretry = (int)cpu_count_get(CPU_COUNT_FLTANRETRY); 476 uvmexp.fltamcopy = (int)cpu_count_get(CPU_COUNT_FLTAMCOPY); 477 uvmexp.fltnamap = (int)cpu_count_get(CPU_COUNT_FLTNAMAP); 478 uvmexp.fltnomap = (int)cpu_count_get(CPU_COUNT_FLTNOMAP); 479 uvmexp.fltlget = (int)cpu_count_get(CPU_COUNT_FLTLGET); 480 uvmexp.fltget = (int)cpu_count_get(CPU_COUNT_FLTGET); 481 uvmexp.flt_anon = (int)cpu_count_get(CPU_COUNT_FLT_ANON); 482 uvmexp.flt_acow = (int)cpu_count_get(CPU_COUNT_FLT_ACOW); 483 uvmexp.flt_obj = (int)cpu_count_get(CPU_COUNT_FLT_OBJ); 484 uvmexp.flt_prcopy = (int)cpu_count_get(CPU_COUNT_FLT_PRCOPY); 485 uvmexp.flt_przero = (int)cpu_count_get(CPU_COUNT_FLT_PRZERO); 486 uvmexp.anonpages = (int)cpu_count_get(CPU_COUNT_ANONPAGES); 487 uvmexp.filepages = (int)cpu_count_get(CPU_COUNT_FILEPAGES); 488 uvmexp.execpages = (int)cpu_count_get(CPU_COUNT_EXECPAGES); 489 uvmexp.colorhit = (int)cpu_count_get(CPU_COUNT_COLORHIT); 490 uvmexp.colormiss = (int)cpu_count_get(CPU_COUNT_COLORMISS); 491 } 492
Indexes created Wed Sep 24 05:09:52 GMT 2025