| 1 | /* $NetBSD: uvm_meter.c,v 1.65 2014/12/01 04:11:14 msaitoh 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 1.65 2014/12/01 04:11:14 msaitoh 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 | node = *rnode; |
| 85 | if (oldlenp) |
| 86 | node.sysctl_size = min(*oldlenp, node.sysctl_size); |
| 87 | |
| 88 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 89 | } |
| 90 | |
| 91 | static int |
| 92 | sysctl_vm_uvmexp2(SYSCTLFN_ARGS) |
| 93 | { |
| 94 | struct sysctlnode node; |
| 95 | struct uvmexp_sysctl u; |
| 96 | int active, inactive; |
| 97 | CPU_INFO_ITERATOR cii; |
| 98 | struct cpu_info *ci; |
| 99 | |
| 100 | uvm_estimatepageable(&active, &inactive); |
| 101 | |
| 102 | memset(&u, 0, sizeof(u)); |
| 103 | |
| 104 | /* Entries here are in order of uvmexp_sysctl, not uvmexp */ |
| 105 | u.pagesize = uvmexp.pagesize; |
| 106 | u.pagemask = uvmexp.pagemask; |
| 107 | u.pageshift = uvmexp.pageshift; |
| 108 | u.npages = uvmexp.npages; |
| 109 | u.free = uvmexp.free; |
| 110 | u.active = active; |
| 111 | u.inactive = inactive; |
| 112 | u.paging = uvmexp.paging; |
| 113 | u.wired = uvmexp.wired; |
| 114 | u.zeropages = uvmexp.zeropages; |
| 115 | u.reserve_pagedaemon = uvmexp.reserve_pagedaemon; |
| 116 | u.reserve_kernel = uvmexp.reserve_kernel; |
| 117 | u.freemin = uvmexp.freemin; |
| 118 | u.freetarg = uvmexp.freetarg; |
| 119 | u.inactarg = 0; /* unused */ |
| 120 | u.wiredmax = uvmexp.wiredmax; |
| 121 | u.nswapdev = uvmexp.nswapdev; |
| 122 | u.swpages = uvmexp.swpages; |
| 123 | u.swpginuse = uvmexp.swpginuse; |
| 124 | u.swpgonly = uvmexp.swpgonly; |
| 125 | u.nswget = uvmexp.nswget; |
| 126 | u.cpuhit = uvmexp.cpuhit; |
| 127 | u.cpumiss = uvmexp.cpumiss; |
| 128 | for (CPU_INFO_FOREACH(cii, ci)) { |
| 129 | u.faults += ci->ci_data.cpu_nfault; |
| 130 | u.traps += ci->ci_data.cpu_ntrap; |
| 131 | u.intrs += ci->ci_data.cpu_nintr; |
| 132 | u.swtch += ci->ci_data.cpu_nswtch; |
| 133 | u.softs += ci->ci_data.cpu_nsoft; |
| 134 | u.syscalls += ci->ci_data.cpu_nsyscall; |
| 135 | } |
| 136 | u.pageins = uvmexp.pageins; |
| 137 | u.pgswapin = uvmexp.pgswapin; |
| 138 | u.pgswapout = uvmexp.pgswapout; |
| 139 | u.forks = uvmexp.forks; |
| 140 | u.forks_ppwait = uvmexp.forks_ppwait; |
| 141 | u.forks_sharevm = uvmexp.forks_sharevm; |
| 142 | u.pga_zerohit = uvmexp.pga_zerohit; |
| 143 | u.pga_zeromiss = uvmexp.pga_zeromiss; |
| 144 | u.zeroaborts = uvmexp.zeroaborts; |
| 145 | u.fltnoram = uvmexp.fltnoram; |
| 146 | u.fltnoanon = uvmexp.fltnoanon; |
| 147 | u.fltpgwait = uvmexp.fltpgwait; |
| 148 | u.fltpgrele = uvmexp.fltpgrele; |
| 149 | u.fltrelck = uvmexp.fltrelck; |
| 150 | u.fltrelckok = uvmexp.fltrelckok; |
| 151 | u.fltanget = uvmexp.fltanget; |
| 152 | u.fltanretry = uvmexp.fltanretry; |
| 153 | u.fltamcopy = uvmexp.fltamcopy; |
| 154 | u.fltnamap = uvmexp.fltnamap; |
| 155 | u.fltnomap = uvmexp.fltnomap; |
| 156 | u.fltlget = uvmexp.fltlget; |
| 157 | u.fltget = uvmexp.fltget; |
| 158 | u.flt_anon = uvmexp.flt_anon; |
| 159 | u.flt_acow = uvmexp.flt_acow; |
| 160 | u.flt_obj = uvmexp.flt_obj; |
| 161 | u.flt_prcopy = uvmexp.flt_prcopy; |
| 162 | u.flt_przero = uvmexp.flt_przero; |
| 163 | u.pdwoke = uvmexp.pdwoke; |
| 164 | u.pdrevs = uvmexp.pdrevs; |
| 165 | u.pdfreed = uvmexp.pdfreed; |
| 166 | u.pdscans = uvmexp.pdscans; |
| 167 | u.pdanscan = uvmexp.pdanscan; |
| 168 | u.pdobscan = uvmexp.pdobscan; |
| 169 | u.pdreact = uvmexp.pdreact; |
| 170 | u.pdbusy = uvmexp.pdbusy; |
| 171 | u.pdpageouts = uvmexp.pdpageouts; |
| 172 | u.pdpending = uvmexp.pdpending; |
| 173 | u.pddeact = uvmexp.pddeact; |
| 174 | u.anonpages = uvmexp.anonpages; |
| 175 | u.filepages = uvmexp.filepages; |
| 176 | u.execpages = uvmexp.execpages; |
| 177 | u.colorhit = uvmexp.colorhit; |
| 178 | u.colormiss = uvmexp.colormiss; |
| 179 | u.ncolors = uvmexp.ncolors; |
| 180 | |
| 181 | node = *rnode; |
| 182 | node.sysctl_data = &u; |
| 183 | node.sysctl_size = sizeof(u); |
| 184 | if (oldlenp) |
| 185 | node.sysctl_size = min(*oldlenp, node.sysctl_size); |
| 186 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * sysctl helper routine for uvm_pctparam. |
| 191 | */ |
| 192 | static int |
| 193 | uvm_sysctlpctparam(SYSCTLFN_ARGS) |
| 194 | { |
| 195 | int t, error; |
| 196 | struct sysctlnode node; |
| 197 | struct uvm_pctparam *pct; |
| 198 | |
| 199 | pct = rnode->sysctl_data; |
| 200 | t = pct->pct_pct; |
| 201 | |
| 202 | node = *rnode; |
| 203 | node.sysctl_data = &t; |
| 204 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 205 | if (error || newp == NULL) |
| 206 | return error; |
| 207 | |
| 208 | if (t < 0 || t > 100) |
| 209 | return EINVAL; |
| 210 | |
| 211 | error = uvm_pctparam_check(pct, t); |
| 212 | if (error) { |
| 213 | return error; |
| 214 | } |
| 215 | uvm_pctparam_set(pct, t); |
| 216 | |
| 217 | return (0); |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | * uvm_sysctl: sysctl hook into UVM system. |
| 222 | */ |
| 223 | SYSCTL_SETUP(sysctl_vm_setup, "sysctl vm subtree setup" ) |
| 224 | { |
| 225 | |
| 226 | sysctl_createv(clog, 0, NULL, NULL, |
| 227 | CTLFLAG_PERMANENT, |
| 228 | CTLTYPE_STRUCT, "vmmeter" , |
| 229 | SYSCTL_DESCR("Simple system-wide virtual memory " |
| 230 | "statistics" ), |
| 231 | sysctl_vm_meter, 0, NULL, sizeof(struct vmtotal), |
| 232 | CTL_VM, VM_METER, CTL_EOL); |
| 233 | sysctl_createv(clog, 0, NULL, NULL, |
| 234 | CTLFLAG_PERMANENT, |
| 235 | CTLTYPE_STRUCT, "loadavg" , |
| 236 | SYSCTL_DESCR("System load average history" ), |
| 237 | NULL, 0, &averunnable, sizeof(averunnable), |
| 238 | CTL_VM, VM_LOADAVG, CTL_EOL); |
| 239 | sysctl_createv(clog, 0, NULL, NULL, |
| 240 | CTLFLAG_PERMANENT, |
| 241 | CTLTYPE_STRUCT, "uvmexp" , |
| 242 | SYSCTL_DESCR("Detailed system-wide virtual memory " |
| 243 | "statistics" ), |
| 244 | sysctl_vm_uvmexp, 0, &uvmexp, sizeof(uvmexp), |
| 245 | CTL_VM, VM_UVMEXP, CTL_EOL); |
| 246 | sysctl_createv(clog, 0, NULL, NULL, |
| 247 | CTLFLAG_PERMANENT, |
| 248 | CTLTYPE_STRUCT, "uvmexp2" , |
| 249 | SYSCTL_DESCR("Detailed system-wide virtual memory " |
| 250 | "statistics (MI)" ), |
| 251 | sysctl_vm_uvmexp2, 0, NULL, 0, |
| 252 | CTL_VM, VM_UVMEXP2, CTL_EOL); |
| 253 | sysctl_createv(clog, 0, NULL, NULL, |
| 254 | CTLFLAG_PERMANENT, CTLTYPE_INT, "maxslp" , |
| 255 | SYSCTL_DESCR("Maximum process sleep time before being " |
| 256 | "swapped" ), |
| 257 | NULL, 0, &maxslp, 0, |
| 258 | CTL_VM, VM_MAXSLP, CTL_EOL); |
| 259 | sysctl_createv(clog, 0, NULL, NULL, |
| 260 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 261 | CTLTYPE_INT, "uspace" , |
| 262 | SYSCTL_DESCR("Number of bytes allocated for a kernel " |
| 263 | "stack" ), |
| 264 | NULL, USPACE, NULL, 0, |
| 265 | CTL_VM, VM_USPACE, CTL_EOL); |
| 266 | sysctl_createv(clog, 0, NULL, NULL, |
| 267 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 268 | CTLTYPE_BOOL, "idlezero" , |
| 269 | SYSCTL_DESCR("Whether try to zero pages in idle loop" ), |
| 270 | NULL, 0, &vm_page_zero_enable, 0, |
| 271 | CTL_VM, CTL_CREATE, CTL_EOL); |
| 272 | sysctl_createv(clog, 0, NULL, NULL, |
| 273 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 274 | CTLTYPE_LONG, "minaddress" , |
| 275 | SYSCTL_DESCR("Minimum user address" ), |
| 276 | NULL, VM_MIN_ADDRESS, NULL, 0, |
| 277 | CTL_VM, VM_MINADDRESS, CTL_EOL); |
| 278 | sysctl_createv(clog, 0, NULL, NULL, |
| 279 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 280 | CTLTYPE_LONG, "maxaddress" , |
| 281 | SYSCTL_DESCR("Maximum user address" ), |
| 282 | NULL, VM_MAX_ADDRESS, NULL, 0, |
| 283 | CTL_VM, VM_MAXADDRESS, CTL_EOL); |
| 284 | |
| 285 | uvmpdpol_sysctlsetup(); |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * uvm_total: calculate the current state of the system. |
| 290 | */ |
| 291 | static void |
| 292 | uvm_total(struct vmtotal *totalp) |
| 293 | { |
| 294 | struct lwp *l; |
| 295 | #if 0 |
| 296 | struct vm_map_entry * entry; |
| 297 | struct vm_map *map; |
| 298 | int paging; |
| 299 | #endif |
| 300 | int active; |
| 301 | |
| 302 | memset(totalp, 0, sizeof *totalp); |
| 303 | |
| 304 | /* |
| 305 | * calculate process statistics |
| 306 | */ |
| 307 | mutex_enter(proc_lock); |
| 308 | LIST_FOREACH(l, &alllwp, l_list) { |
| 309 | if (l->l_proc->p_flag & PK_SYSTEM) |
| 310 | continue; |
| 311 | switch (l->l_stat) { |
| 312 | case 0: |
| 313 | continue; |
| 314 | |
| 315 | case LSSLEEP: |
| 316 | case LSSTOP: |
| 317 | if ((l->l_flag & LW_SINTR) == 0) { |
| 318 | totalp->t_dw++; |
| 319 | } else if (l->l_slptime < maxslp) { |
| 320 | totalp->t_sl++; |
| 321 | } |
| 322 | if (l->l_slptime >= maxslp) |
| 323 | continue; |
| 324 | break; |
| 325 | |
| 326 | case LSRUN: |
| 327 | case LSONPROC: |
| 328 | case LSIDL: |
| 329 | totalp->t_rq++; |
| 330 | if (l->l_stat == LSIDL) |
| 331 | continue; |
| 332 | break; |
| 333 | } |
| 334 | /* |
| 335 | * note active objects |
| 336 | */ |
| 337 | #if 0 |
| 338 | /* |
| 339 | * XXXCDC: BOGUS! rethink this. in the mean time |
| 340 | * don't do it. |
| 341 | */ |
| 342 | paging = 0; |
| 343 | vm_map_lock(map); |
| 344 | for (map = &p->p_vmspace->vm_map, entry = map->header.next; |
| 345 | entry != &map->header; entry = entry->next) { |
| 346 | if (entry->is_a_map || entry->is_sub_map || |
| 347 | entry->object.uvm_obj == NULL) |
| 348 | continue; |
| 349 | /* XXX how to do this with uvm */ |
| 350 | } |
| 351 | vm_map_unlock(map); |
| 352 | if (paging) |
| 353 | totalp->t_pw++; |
| 354 | #endif |
| 355 | } |
| 356 | mutex_exit(proc_lock); |
| 357 | |
| 358 | /* |
| 359 | * Calculate object memory usage statistics. |
| 360 | */ |
| 361 | uvm_estimatepageable(&active, NULL); |
| 362 | totalp->t_free = uvmexp.free; |
| 363 | totalp->t_vm = uvmexp.npages - uvmexp.free + uvmexp.swpginuse; |
| 364 | totalp->t_avm = active + uvmexp.swpginuse; /* XXX */ |
| 365 | totalp->t_rm = uvmexp.npages - uvmexp.free; |
| 366 | totalp->t_arm = active; |
| 367 | totalp->t_vmshr = 0; /* XXX */ |
| 368 | totalp->t_avmshr = 0; /* XXX */ |
| 369 | totalp->t_rmshr = 0; /* XXX */ |
| 370 | totalp->t_armshr = 0; /* XXX */ |
| 371 | } |
| 372 | |
| 373 | void |
| 374 | uvm_pctparam_set(struct uvm_pctparam *pct, int val) |
| 375 | { |
| 376 | |
| 377 | pct->pct_pct = val; |
| 378 | pct->pct_scaled = val * UVM_PCTPARAM_SCALE / 100; |
| 379 | } |
| 380 | |
| 381 | int |
| 382 | uvm_pctparam_get(struct uvm_pctparam *pct) |
| 383 | { |
| 384 | |
| 385 | return pct->pct_pct; |
| 386 | } |
| 387 | |
| 388 | int |
| 389 | uvm_pctparam_check(struct uvm_pctparam *pct, int val) |
| 390 | { |
| 391 | |
| 392 | if (pct->pct_check == NULL) { |
| 393 | return 0; |
| 394 | } |
| 395 | return (*pct->pct_check)(pct, val); |
| 396 | } |
| 397 | |
| 398 | void |
| 399 | uvm_pctparam_init(struct uvm_pctparam *pct, int val, |
| 400 | int (*fn)(struct uvm_pctparam *, int)) |
| 401 | { |
| 402 | |
| 403 | pct->pct_check = fn; |
| 404 | uvm_pctparam_set(pct, val); |
| 405 | } |
| 406 | |
| 407 | int |
| 408 | uvm_pctparam_createsysctlnode(struct uvm_pctparam *pct, const char *name, |
| 409 | const char *desc) |
| 410 | { |
| 411 | |
| 412 | return sysctl_createv(NULL, 0, NULL, NULL, |
| 413 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 414 | CTLTYPE_INT, name, SYSCTL_DESCR(desc), |
| 415 | uvm_sysctlpctparam, 0, (void *)pct, 0, CTL_VM, CTL_CREATE, CTL_EOL); |
| 416 | } |
| 417 | |