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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 32 * $FreeBSD: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $ 33 * $DragonFly: src/sys/vm/vm_meter.c,v 1.15 2008/04/28 18:04:08 dillon Exp $ 34 */ 35 36 #include <sys/param.h> 37 #include <sys/proc.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/resource.h> 41 #include <sys/vmmeter.h> 42 43 #include <vm/vm.h> 44 #include <vm/vm_page.h> 45 #include <vm/vm_extern.h> 46 #include <vm/vm_param.h> 47 #include <sys/lock.h> 48 #include <vm/pmap.h> 49 #include <vm/vm_map.h> 50 #include <vm/vm_object.h> 51 #include <sys/sysctl.h> 52 53 struct vmstats vmstats; 54 55 static int maxslp = MAXSLP; 56 57 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 58 CTLFLAG_RW, &vmstats.v_free_min, 0, 59 "Minimum number of pages desired free"); 60 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 61 CTLFLAG_RW, &vmstats.v_free_target, 0, 62 "Number of pages desired free"); 63 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 64 CTLFLAG_RW, &vmstats.v_free_reserved, 0, 65 "Number of pages reserved for deadlock"); 66 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 67 CTLFLAG_RW, &vmstats.v_inactive_target, 0, 68 "Number of pages desired inactive"); 69 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 70 CTLFLAG_RW, &vmstats.v_cache_min, 0, 71 "Min number of pages desired on cache queue"); 72 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 73 CTLFLAG_RW, &vmstats.v_cache_max, 0, 74 "Max number of pages in cached obj"); 75 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 76 CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, 77 "Min number pages reserved for kernel"); 78 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 79 CTLFLAG_RW, &vmstats.v_free_severe, 0, ""); 80 81 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD, 82 &averunnable, loadavg, "Machine loadaverage history"); 83 84 static int do_vmtotal_callback(struct proc *p, void *data); 85 86 /* 87 * No requirements. 88 */ 89 static int 90 do_vmtotal(SYSCTL_HANDLER_ARGS) 91 { 92 struct vmtotal total; 93 struct vmtotal *totalp; 94 struct vm_object marker; 95 vm_object_t object; 96 long collisions; 97 int burst; 98 99 bzero(&total, sizeof(total)); 100 totalp = &total; 101 bzero(&marker, sizeof(marker)); 102 marker.type = OBJT_MARKER; 103 collisions = vmobj_token.t_collisions; 104 105 #if 0 106 /* 107 * Mark all objects as inactive. 108 */ 109 lwkt_gettoken(&vmobj_token); 110 for (object = TAILQ_FIRST(&vm_object_list); 111 object != NULL; 112 object = TAILQ_NEXT(object,object_list)) { 113 if (object->type == OBJT_MARKER) 114 continue; 115 vm_object_clear_flag(object, OBJ_ACTIVE); 116 } 117 lwkt_reltoken(&vmobj_token); 118 #endif 119 120 /* 121 * Calculate process statistics. 122 */ 123 allproc_scan(do_vmtotal_callback, totalp); 124 125 /* 126 * Calculate object memory usage statistics. 127 */ 128 lwkt_gettoken(&vmobj_token); 129 TAILQ_INSERT_HEAD(&vm_object_list, &marker, object_list); 130 burst = 0; 131 132 for (object = TAILQ_FIRST(&vm_object_list); 133 object != NULL; 134 object = TAILQ_NEXT(object, object_list)) { 135 /* 136 * devices, like /dev/mem, will badly skew our totals. 137 * markers aren't real objects. 138 */ 139 if (object->type == OBJT_MARKER) 140 continue; 141 if (object->type == OBJT_DEVICE) 142 continue; 143 if (object->size >= 0x7FFFFFFF) { 144 /* 145 * Probably unbounded anonymous memory (really 146 * bounded by related vm_map_entry structures which 147 * we do not have access to in this loop). 148 */ 149 totalp->t_vm += object->resident_page_count; 150 } else { 151 /* 152 * It's questionable how useful this is but... 153 */ 154 totalp->t_vm += object->size; 155 } 156 totalp->t_rm += object->resident_page_count; 157 if (object->flags & OBJ_ACTIVE) { 158 totalp->t_avm += object->size; 159 totalp->t_arm += object->resident_page_count; 160 } 161 if (object->shadow_count > 1) { 162 /* shared object */ 163 totalp->t_vmshr += object->size; 164 totalp->t_rmshr += object->resident_page_count; 165 if (object->flags & OBJ_ACTIVE) { 166 totalp->t_avmshr += object->size; 167 totalp->t_armshr += object->resident_page_count; 168 } 169 } 170 171 /* 172 * Don't waste time unnecessarily 173 */ 174 if (++burst < 25) 175 continue; 176 burst = 0; 177 178 /* 179 * Don't hog the vmobj_token if someone else wants it. 180 */ 181 TAILQ_REMOVE(&vm_object_list, &marker, object_list); 182 TAILQ_INSERT_AFTER(&vm_object_list, object, 183 &marker, object_list); 184 object = ▮ 185 if (collisions != vmobj_token.t_collisions) { 186 tsleep(&vm_object_list, 0, "breath", 1); 187 collisions = vmobj_token.t_collisions; 188 } else { 189 lwkt_yield(); 190 } 191 } 192 193 TAILQ_REMOVE(&vm_object_list, &marker, object_list); 194 lwkt_reltoken(&vmobj_token); 195 196 totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count; 197 198 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); 199 } 200 201 /* 202 * The caller must hold proc_token. 203 */ 204 static int 205 do_vmtotal_callback(struct proc *p, void *data) 206 { 207 struct vmtotal *totalp = data; 208 struct lwp *lp; 209 210 if (p->p_flags & P_SYSTEM) 211 return(0); 212 213 FOREACH_LWP_IN_PROC(lp, p) { 214 switch (lp->lwp_stat) { 215 case LSSTOP: 216 case LSSLEEP: 217 if ((p->p_flags & P_SWAPPEDOUT) == 0) { 218 if ((lp->lwp_flags & LWP_SINTR) == 0) 219 totalp->t_dw++; 220 else if (lp->lwp_slptime < maxslp) 221 totalp->t_sl++; 222 } else if (lp->lwp_slptime < maxslp) { 223 totalp->t_sw++; 224 } 225 if (lp->lwp_slptime >= maxslp) 226 return(0); 227 break; 228 229 case LSRUN: 230 if (p->p_flags & P_SWAPPEDOUT) 231 totalp->t_sw++; 232 else 233 totalp->t_rq++; 234 if (p->p_stat == SIDL) 235 return(0); 236 break; 237 238 default: 239 return (0); 240 } 241 242 /* 243 * Set while in vm_fault() 244 */ 245 if (lp->lwp_flags & LWP_PAGING) 246 totalp->t_pw++; 247 } 248 return(0); 249 } 250 251 /* 252 * No requirements. 253 */ 254 static int 255 do_vmstats(SYSCTL_HANDLER_ARGS) 256 { 257 struct vmstats vms = vmstats; 258 return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req)); 259 } 260 261 /* 262 * No requirements. 263 */ 264 static int 265 do_vmmeter(SYSCTL_HANDLER_ARGS) 266 { 267 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 268 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 269 struct vmmeter vmm; 270 int i; 271 272 bzero(&vmm, sizeof(vmm)); 273 for (i = 0; i < ncpus; ++i) { 274 int off; 275 struct globaldata *gd = globaldata_find(i); 276 277 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 278 *(u_int *)((char *)&vmm + off) += 279 *(u_int *)((char *)&gd->gd_cnt + off); 280 } 281 282 } 283 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 284 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 285 } 286 287 /* 288 * vcnt() - accumulate statistics from the cnt structure for each cpu 289 * 290 * The vmmeter structure is now per-cpu as well as global. Those 291 * statistics which can be kept on a per-cpu basis (to avoid cache 292 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 293 * statistics, such as v_free_reserved, are left in the global 294 * structure. 295 * 296 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 297 * 298 * No requirements. 299 */ 300 static int 301 vcnt(SYSCTL_HANDLER_ARGS) 302 { 303 int i; 304 int count = 0; 305 int offset = arg2; 306 307 for (i = 0; i < ncpus; ++i) { 308 struct globaldata *gd = globaldata_find(i); 309 count += *(int *)((char *)&gd->gd_cnt + offset); 310 } 311 return(SYSCTL_OUT(req, &count, sizeof(int))); 312 } 313 314 /* 315 * No requirements. 316 */ 317 static int 318 vcnt_intr(SYSCTL_HANDLER_ARGS) 319 { 320 int i; 321 int count = 0; 322 323 for (i = 0; i < ncpus; ++i) { 324 struct globaldata *gd = globaldata_find(i); 325 326 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi + 327 gd->gd_cnt.v_timer; 328 } 329 return(SYSCTL_OUT(req, &count, sizeof(int))); 330 } 331 332 #define VMMETEROFF(var) offsetof(struct vmmeter, var) 333 334 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 335 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal", 336 "System virtual memory aggregate"); 337 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD, 338 0, sizeof(struct vmstats), do_vmstats, "S,vmstats", 339 "System virtual memory statistics"); 340 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 341 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter", 342 "System statistics"); 343 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 344 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 345 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); 346 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 347 348 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 349 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches"); 350 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD, 351 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "Intransit map collisions (total)"); 352 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD, 353 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "Intransit map collisions which blocked"); 354 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD, 355 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "Forwarded interrupts due to MP lock"); 356 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD, 357 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "Forwarded hits due to MP lock"); 358 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD, 359 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "Forwarded misses due to MP lock"); 360 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 361 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps"); 362 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 363 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls"); 364 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 365 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts"); 366 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD, 367 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts"); 368 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD, 369 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts"); 370 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 371 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts"); 372 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 373 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults"); 374 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 375 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults"); 376 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 377 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults"); 378 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 379 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill"); 380 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 381 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill"); 382 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 383 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations"); 384 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 385 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations"); 386 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 387 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages"); 388 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 389 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages"); 390 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 391 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations"); 392 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 393 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations"); 394 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 395 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages"); 396 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 397 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages"); 398 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 399 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking"); 400 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 401 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages"); 402 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 403 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups"); 404 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ppwakeups, CTLTYPE_UINT|CTLFLAG_RD, 405 0, VMMETEROFF(v_ppwakeups), vcnt, "IU", "vm_wait wakeups"); 406 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 407 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans"); 408 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 409 0, VMMETEROFF(v_dfree), vcnt, "IU", "Pages freed by daemon"); 410 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 411 0, VMMETEROFF(v_pfree), vcnt, "IU", "Pages freed by exiting processes"); 412 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 413 0, VMMETEROFF(v_tfree), vcnt, "IU", "Total pages freed"); 414 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 415 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls"); 416 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 417 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls"); 418 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 419 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls"); 420 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 421 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel"); 422 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 423 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()"); 424 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 425 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()"); 426 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 427 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()"); 428 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 429 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel"); 430 431 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 432 v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, 433 "Page size in bytes"); 434 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 435 v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, 436 "Total number of pages in system"); 437 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 438 v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, 439 "Number of pages reserved for deadlock"); 440 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 441 v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, 442 "Number of pages desired free"); 443 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 444 v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, 445 "Minimum number of pages desired free"); 446 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 447 v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, 448 "Number of pages free"); 449 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 450 v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, 451 "Number of pages wired down"); 452 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 453 v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, 454 "Number of pages active"); 455 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 456 v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, 457 "Number of pages desired inactive"); 458 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 459 v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, 460 "Number of pages inactive"); 461 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 462 v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, 463 "Number of pages on buffer cache queue"); 464 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 465 v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, 466 "Min number of pages desired on cache queue"); 467 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 468 v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, 469 "Max number of pages in cached obj"); 470 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 471 v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, 472 "Min number pages reserved for kernel"); 473 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 474 v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, 475 "Reserved number of pages for int code"); 476 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 477 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, 478 "Number of zeroing pages"); 479 480 /* 481 * No requirements. 482 */ 483 static int 484 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS) 485 { 486 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 487 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 488 struct globaldata *gd = arg1; 489 struct vmmeter vmm; 490 int off; 491 492 bzero(&vmm, sizeof(vmm)); 493 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 494 *(u_int *)((char *)&vmm + off) += 495 *(u_int *)((char *)&gd->gd_cnt + off); 496 } 497 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 498 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 499 } 500 501 /* 502 * Called from the low level boot code only. 503 */ 504 static void 505 vmmeter_init(void *dummy __unused) 506 { 507 int i; 508 509 for (i = 0; i < ncpus; ++i) { 510 struct sysctl_ctx_list *ctx; 511 struct sysctl_oid *oid; 512 struct globaldata *gd; 513 char name[32]; 514 515 ksnprintf(name, sizeof(name), "cpu%d", i); 516 517 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK); 518 sysctl_ctx_init(ctx); 519 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm), 520 OID_AUTO, name, CTLFLAG_RD, 0, ""); 521 522 gd = globaldata_find(i); 523 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 524 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD, 525 gd, sizeof(struct vmmeter), do_vmmeter_pcpu, 526 "S,vmmeter", "System per-cpu statistics"); 527 } 528 } 529 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0); 530