1 /* 2 * (MPSAFE) 3 * 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 36 * $FreeBSD: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $ 37 * $DragonFly: src/sys/vm/vm_meter.c,v 1.15 2008/04/28 18:04:08 dillon Exp $ 38 */ 39 40 #include <sys/param.h> 41 #include <sys/proc.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/resource.h> 45 #include <sys/vmmeter.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_page.h> 49 #include <vm/vm_extern.h> 50 #include <vm/vm_param.h> 51 #include <sys/lock.h> 52 #include <vm/pmap.h> 53 #include <vm/vm_map.h> 54 #include <vm/vm_object.h> 55 #include <sys/sysctl.h> 56 57 struct vmstats vmstats; 58 59 static int maxslp = MAXSLP; 60 61 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 62 CTLFLAG_RW, &vmstats.v_free_min, 0, 63 "Minimum number of pages desired free"); 64 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 65 CTLFLAG_RW, &vmstats.v_free_target, 0, 66 "Number of pages desired free"); 67 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 68 CTLFLAG_RW, &vmstats.v_free_reserved, 0, 69 "Number of pages reserved for deadlock"); 70 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 71 CTLFLAG_RW, &vmstats.v_inactive_target, 0, 72 "Number of pages desired inactive"); 73 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 74 CTLFLAG_RW, &vmstats.v_cache_min, 0, 75 "Min number of pages desired on cache queue"); 76 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 77 CTLFLAG_RW, &vmstats.v_cache_max, 0, 78 "Max number of pages in cached obj"); 79 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 80 CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, 81 "Min number pages reserved for kernel"); 82 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 83 CTLFLAG_RW, &vmstats.v_free_severe, 0, ""); 84 85 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD, 86 &averunnable, loadavg, "Machine loadaverage history"); 87 88 static int do_vmtotal_callback(struct proc *p, void *data); 89 90 /* 91 * No requirements. 92 */ 93 static int 94 do_vmtotal(SYSCTL_HANDLER_ARGS) 95 { 96 struct vmtotal total; 97 struct vmtotal *totalp; 98 vm_object_t object; 99 100 bzero(&total, sizeof(total)); 101 totalp = &total; 102 103 /* 104 * Mark all objects as inactive. 105 */ 106 lwkt_gettoken(&vmobj_token); 107 for (object = TAILQ_FIRST(&vm_object_list); 108 object != NULL; 109 object = TAILQ_NEXT(object,object_list)) { 110 if (object->type == OBJT_MARKER) 111 continue; 112 vm_object_clear_flag(object, OBJ_ACTIVE); 113 } 114 lwkt_reltoken(&vmobj_token); 115 116 /* 117 * Calculate process statistics. 118 */ 119 allproc_scan(do_vmtotal_callback, totalp); 120 121 /* 122 * Calculate object memory usage statistics. 123 */ 124 lwkt_gettoken(&vmobj_token); 125 for (object = TAILQ_FIRST(&vm_object_list); 126 object != NULL; 127 object = TAILQ_NEXT(object, object_list)) { 128 /* 129 * devices, like /dev/mem, will badly skew our totals. 130 * markers aren't real objects. 131 */ 132 if (object->type == OBJT_MARKER) 133 continue; 134 if (object->type == OBJT_DEVICE) 135 continue; 136 if (object->size >= 0x7FFFFFFF) { 137 /* 138 * Probably unbounded anonymous memory (really 139 * bounded by related vm_map_entry structures which 140 * we do not have access to in this loop). 141 */ 142 totalp->t_vm += object->resident_page_count; 143 } else { 144 /* 145 * It's questionable how useful this is but... 146 */ 147 totalp->t_vm += object->size; 148 } 149 totalp->t_rm += object->resident_page_count; 150 if (object->flags & OBJ_ACTIVE) { 151 totalp->t_avm += object->size; 152 totalp->t_arm += object->resident_page_count; 153 } 154 if (object->shadow_count > 1) { 155 /* shared object */ 156 totalp->t_vmshr += object->size; 157 totalp->t_rmshr += object->resident_page_count; 158 if (object->flags & OBJ_ACTIVE) { 159 totalp->t_avmshr += object->size; 160 totalp->t_armshr += object->resident_page_count; 161 } 162 } 163 } 164 lwkt_reltoken(&vmobj_token); 165 totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count; 166 167 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); 168 } 169 170 /* 171 * The caller must hold proc_token. 172 */ 173 static int 174 do_vmtotal_callback(struct proc *p, void *data) 175 { 176 struct vmtotal *totalp = data; 177 struct lwp *lp; 178 vm_map_entry_t entry; 179 vm_map_t map; 180 int paging; 181 182 if (p->p_flag & P_SYSTEM) 183 return(0); 184 185 FOREACH_LWP_IN_PROC(lp, p) { 186 switch (lp->lwp_stat) { 187 case LSSTOP: 188 case LSSLEEP: 189 if ((p->p_flag & P_SWAPPEDOUT) == 0) { 190 if ((lp->lwp_flag & LWP_SINTR) == 0) 191 totalp->t_dw++; 192 else if (lp->lwp_slptime < maxslp) 193 totalp->t_sl++; 194 } else if (lp->lwp_slptime < maxslp) { 195 totalp->t_sw++; 196 } 197 if (lp->lwp_slptime >= maxslp) 198 return(0); 199 break; 200 201 case LSRUN: 202 if (p->p_flag & P_SWAPPEDOUT) 203 totalp->t_sw++; 204 else 205 totalp->t_rq++; 206 if (p->p_stat == SIDL) 207 return(0); 208 break; 209 210 default: 211 return (0); 212 } 213 } 214 215 /* 216 * Note active objects. 217 */ 218 paging = 0; 219 lwkt_gettoken(&vm_token); 220 if (p->p_vmspace) { 221 map = &p->p_vmspace->vm_map; 222 vm_map_lock_read(map); 223 for (entry = map->header.next; 224 entry != &map->header; entry = entry->next) { 225 if (entry->maptype != VM_MAPTYPE_NORMAL && 226 entry->maptype != VM_MAPTYPE_VPAGETABLE) { 227 continue; 228 } 229 if (entry->object.vm_object == NULL) 230 continue; 231 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE); 232 paging |= entry->object.vm_object->paging_in_progress; 233 } 234 vm_map_unlock_read(map); 235 } 236 lwkt_reltoken(&vm_token); 237 if (paging) 238 totalp->t_pw++; 239 return(0); 240 } 241 242 /* 243 * No requirements. 244 */ 245 static int 246 do_vmstats(SYSCTL_HANDLER_ARGS) 247 { 248 struct vmstats vms = vmstats; 249 return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req)); 250 } 251 252 /* 253 * No requirements. 254 */ 255 static int 256 do_vmmeter(SYSCTL_HANDLER_ARGS) 257 { 258 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 259 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 260 struct vmmeter vmm; 261 int i; 262 263 bzero(&vmm, sizeof(vmm)); 264 for (i = 0; i < ncpus; ++i) { 265 int off; 266 struct globaldata *gd = globaldata_find(i); 267 268 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 269 *(u_int *)((char *)&vmm + off) += 270 *(u_int *)((char *)&gd->gd_cnt + off); 271 } 272 273 } 274 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 275 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 276 } 277 278 /* 279 * vcnt() - accumulate statistics from the cnt structure for each cpu 280 * 281 * The vmmeter structure is now per-cpu as well as global. Those 282 * statistics which can be kept on a per-cpu basis (to avoid cache 283 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 284 * statistics, such as v_free_reserved, are left in the global 285 * structure. 286 * 287 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 288 * 289 * No requirements. 290 */ 291 static int 292 vcnt(SYSCTL_HANDLER_ARGS) 293 { 294 int i; 295 int count = 0; 296 int offset = arg2; 297 298 for (i = 0; i < ncpus; ++i) { 299 struct globaldata *gd = globaldata_find(i); 300 count += *(int *)((char *)&gd->gd_cnt + offset); 301 } 302 return(SYSCTL_OUT(req, &count, sizeof(int))); 303 } 304 305 /* 306 * No requirements. 307 */ 308 static int 309 vcnt_intr(SYSCTL_HANDLER_ARGS) 310 { 311 int i; 312 int count = 0; 313 314 for (i = 0; i < ncpus; ++i) { 315 struct globaldata *gd = globaldata_find(i); 316 317 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi + 318 gd->gd_cnt.v_timer; 319 } 320 return(SYSCTL_OUT(req, &count, sizeof(int))); 321 } 322 323 #define VMMETEROFF(var) offsetof(struct vmmeter, var) 324 325 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 326 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal", 327 "System virtual memory aggregate"); 328 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD, 329 0, sizeof(struct vmstats), do_vmstats, "S,vmstats", 330 "System virtual memory statistics"); 331 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 332 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter", 333 "System statistics"); 334 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 335 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 336 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); 337 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 338 339 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 340 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches"); 341 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD, 342 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "Intransit map collisions (total)"); 343 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD, 344 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "Intransit map collisions which blocked"); 345 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD, 346 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "Forwarded interrupts due to MP lock"); 347 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD, 348 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "Forwarded hits due to MP lock"); 349 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD, 350 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "Forwarded misses due to MP lock"); 351 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 352 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps"); 353 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 354 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls"); 355 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 356 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts"); 357 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD, 358 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts"); 359 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD, 360 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts"); 361 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 362 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts"); 363 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 364 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults"); 365 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 366 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults"); 367 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 368 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults"); 369 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 370 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill"); 371 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 372 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill"); 373 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 374 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations"); 375 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 376 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations"); 377 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 378 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages"); 379 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 380 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages"); 381 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 382 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations"); 383 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 384 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations"); 385 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 386 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages"); 387 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 388 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages"); 389 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 390 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking"); 391 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 392 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages"); 393 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 394 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups"); 395 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ppwakeups, CTLTYPE_UINT|CTLFLAG_RD, 396 0, VMMETEROFF(v_ppwakeups), vcnt, "IU", "vm_wait wakeups"); 397 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 398 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans"); 399 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 400 0, VMMETEROFF(v_dfree), vcnt, "IU", "Pages freed by daemon"); 401 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 402 0, VMMETEROFF(v_pfree), vcnt, "IU", "Pages freed by exiting processes"); 403 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 404 0, VMMETEROFF(v_tfree), vcnt, "IU", "Total pages freed"); 405 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 406 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls"); 407 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 408 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls"); 409 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 410 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls"); 411 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 412 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel"); 413 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 414 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()"); 415 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 416 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()"); 417 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 418 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()"); 419 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 420 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel"); 421 422 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 423 v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, 424 "Page size in bytes"); 425 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 426 v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, 427 "Total number of pages in system"); 428 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 429 v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, 430 "Number of pages reserved for deadlock"); 431 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 432 v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, 433 "Number of pages desired free"); 434 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 435 v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, 436 "Minimum number of pages desired free"); 437 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 438 v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, 439 "Number of pages free"); 440 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 441 v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, 442 "Number of pages wired down"); 443 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 444 v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, 445 "Number of pages active"); 446 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 447 v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, 448 "Number of pages desired inactive"); 449 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 450 v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, 451 "Number of pages inactive"); 452 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 453 v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, 454 "Number of pages on buffer cache queue"); 455 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 456 v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, 457 "Min number of pages desired on cache queue"); 458 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 459 v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, 460 "Max number of pages in cached obj"); 461 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 462 v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, 463 "Min number pages reserved for kernel"); 464 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 465 v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, 466 "Reserved number of pages for int code"); 467 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 468 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, 469 "Number of zeroing pages"); 470 471 /* 472 * No requirements. 473 */ 474 static int 475 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS) 476 { 477 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 478 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 479 struct globaldata *gd = arg1; 480 struct vmmeter vmm; 481 int off; 482 483 bzero(&vmm, sizeof(vmm)); 484 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 485 *(u_int *)((char *)&vmm + off) += 486 *(u_int *)((char *)&gd->gd_cnt + off); 487 } 488 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 489 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 490 } 491 492 /* 493 * Called from the low level boot code only. 494 */ 495 static void 496 vmmeter_init(void *dummy __unused) 497 { 498 int i; 499 500 for (i = 0; i < ncpus; ++i) { 501 struct sysctl_ctx_list *ctx; 502 struct sysctl_oid *oid; 503 struct globaldata *gd; 504 char name[32]; 505 506 ksnprintf(name, sizeof(name), "cpu%d", i); 507 508 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK); 509 sysctl_ctx_init(ctx); 510 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm), 511 OID_AUTO, name, CTLFLAG_RD, 0, ""); 512 513 gd = globaldata_find(i); 514 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 515 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD, 516 gd, sizeof(struct vmmeter), do_vmmeter_pcpu, 517 "S,vmmeter", "System per-cpu statistics"); 518 } 519 } 520 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0); 521