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 struct vm_object marker; 99 vm_object_t object; 100 long collisions; 101 int burst; 102 103 bzero(&total, sizeof(total)); 104 totalp = &total; 105 bzero(&marker, sizeof(marker)); 106 marker.type = OBJT_MARKER; 107 collisions = vmobj_token.t_collisions; 108 109 #if 0 110 /* 111 * Mark all objects as inactive. 112 */ 113 lwkt_gettoken(&vmobj_token); 114 for (object = TAILQ_FIRST(&vm_object_list); 115 object != NULL; 116 object = TAILQ_NEXT(object,object_list)) { 117 if (object->type == OBJT_MARKER) 118 continue; 119 vm_object_clear_flag(object, OBJ_ACTIVE); 120 } 121 lwkt_reltoken(&vmobj_token); 122 #endif 123 124 /* 125 * Calculate process statistics. 126 */ 127 allproc_scan(do_vmtotal_callback, totalp); 128 129 /* 130 * Calculate object memory usage statistics. 131 */ 132 lwkt_gettoken(&vmobj_token); 133 TAILQ_INSERT_HEAD(&vm_object_list, &marker, object_list); 134 burst = 0; 135 136 for (object = TAILQ_FIRST(&vm_object_list); 137 object != NULL; 138 object = TAILQ_NEXT(object, object_list)) { 139 /* 140 * devices, like /dev/mem, will badly skew our totals. 141 * markers aren't real objects. 142 */ 143 if (object->type == OBJT_MARKER) 144 continue; 145 if (object->type == OBJT_DEVICE) 146 continue; 147 if (object->size >= 0x7FFFFFFF) { 148 /* 149 * Probably unbounded anonymous memory (really 150 * bounded by related vm_map_entry structures which 151 * we do not have access to in this loop). 152 */ 153 totalp->t_vm += object->resident_page_count; 154 } else { 155 /* 156 * It's questionable how useful this is but... 157 */ 158 totalp->t_vm += object->size; 159 } 160 totalp->t_rm += object->resident_page_count; 161 if (object->flags & OBJ_ACTIVE) { 162 totalp->t_avm += object->size; 163 totalp->t_arm += object->resident_page_count; 164 } 165 if (object->shadow_count > 1) { 166 /* shared object */ 167 totalp->t_vmshr += object->size; 168 totalp->t_rmshr += object->resident_page_count; 169 if (object->flags & OBJ_ACTIVE) { 170 totalp->t_avmshr += object->size; 171 totalp->t_armshr += object->resident_page_count; 172 } 173 } 174 175 /* 176 * Don't waste time unnecessarily 177 */ 178 if (++burst < 25) 179 continue; 180 burst = 0; 181 182 /* 183 * Don't hog the vmobj_token if someone else wants it. 184 */ 185 TAILQ_REMOVE(&vm_object_list, &marker, object_list); 186 TAILQ_INSERT_AFTER(&vm_object_list, object, 187 &marker, object_list); 188 object = ▮ 189 if (collisions != vmobj_token.t_collisions) { 190 tsleep(&vm_object_list, 0, "breath", 1); 191 collisions = vmobj_token.t_collisions; 192 } else { 193 lwkt_yield(); 194 } 195 } 196 197 TAILQ_REMOVE(&vm_object_list, &marker, object_list); 198 lwkt_reltoken(&vmobj_token); 199 200 totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count; 201 202 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); 203 } 204 205 /* 206 * The caller must hold proc_token. 207 */ 208 static int 209 do_vmtotal_callback(struct proc *p, void *data) 210 { 211 struct vmtotal *totalp = data; 212 struct lwp *lp; 213 214 if (p->p_flags & P_SYSTEM) 215 return(0); 216 217 FOREACH_LWP_IN_PROC(lp, p) { 218 switch (lp->lwp_stat) { 219 case LSSTOP: 220 case LSSLEEP: 221 if ((p->p_flags & P_SWAPPEDOUT) == 0) { 222 if ((lp->lwp_flags & LWP_SINTR) == 0) 223 totalp->t_dw++; 224 else if (lp->lwp_slptime < maxslp) 225 totalp->t_sl++; 226 } else if (lp->lwp_slptime < maxslp) { 227 totalp->t_sw++; 228 } 229 if (lp->lwp_slptime >= maxslp) 230 return(0); 231 break; 232 233 case LSRUN: 234 if (p->p_flags & P_SWAPPEDOUT) 235 totalp->t_sw++; 236 else 237 totalp->t_rq++; 238 if (p->p_stat == SIDL) 239 return(0); 240 break; 241 242 default: 243 return (0); 244 } 245 246 /* 247 * Set while in vm_fault() 248 */ 249 if (lp->lwp_flags & LWP_PAGING) 250 totalp->t_pw++; 251 } 252 return(0); 253 } 254 255 /* 256 * No requirements. 257 */ 258 static int 259 do_vmstats(SYSCTL_HANDLER_ARGS) 260 { 261 struct vmstats vms = vmstats; 262 return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req)); 263 } 264 265 /* 266 * No requirements. 267 */ 268 static int 269 do_vmmeter(SYSCTL_HANDLER_ARGS) 270 { 271 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 272 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 273 struct vmmeter vmm; 274 int i; 275 276 bzero(&vmm, sizeof(vmm)); 277 for (i = 0; i < ncpus; ++i) { 278 int off; 279 struct globaldata *gd = globaldata_find(i); 280 281 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 282 *(u_int *)((char *)&vmm + off) += 283 *(u_int *)((char *)&gd->gd_cnt + off); 284 } 285 286 } 287 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 288 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 289 } 290 291 /* 292 * vcnt() - accumulate statistics from the cnt structure for each cpu 293 * 294 * The vmmeter structure is now per-cpu as well as global. Those 295 * statistics which can be kept on a per-cpu basis (to avoid cache 296 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 297 * statistics, such as v_free_reserved, are left in the global 298 * structure. 299 * 300 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 301 * 302 * No requirements. 303 */ 304 static int 305 vcnt(SYSCTL_HANDLER_ARGS) 306 { 307 int i; 308 int count = 0; 309 int offset = arg2; 310 311 for (i = 0; i < ncpus; ++i) { 312 struct globaldata *gd = globaldata_find(i); 313 count += *(int *)((char *)&gd->gd_cnt + offset); 314 } 315 return(SYSCTL_OUT(req, &count, sizeof(int))); 316 } 317 318 /* 319 * No requirements. 320 */ 321 static int 322 vcnt_intr(SYSCTL_HANDLER_ARGS) 323 { 324 int i; 325 int count = 0; 326 327 for (i = 0; i < ncpus; ++i) { 328 struct globaldata *gd = globaldata_find(i); 329 330 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi + 331 gd->gd_cnt.v_timer; 332 } 333 return(SYSCTL_OUT(req, &count, sizeof(int))); 334 } 335 336 #define VMMETEROFF(var) offsetof(struct vmmeter, var) 337 338 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 339 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal", 340 "System virtual memory aggregate"); 341 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD, 342 0, sizeof(struct vmstats), do_vmstats, "S,vmstats", 343 "System virtual memory statistics"); 344 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 345 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter", 346 "System statistics"); 347 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 348 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 349 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); 350 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 351 352 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 353 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches"); 354 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD, 355 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", "Intransit map collisions (total)"); 356 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD, 357 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", "Intransit map collisions which blocked"); 358 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD, 359 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", "Forwarded interrupts due to MP lock"); 360 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD, 361 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", "Forwarded hits due to MP lock"); 362 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD, 363 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", "Forwarded misses due to MP lock"); 364 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 365 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps"); 366 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 367 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls"); 368 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 369 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts"); 370 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD, 371 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts"); 372 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD, 373 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts"); 374 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 375 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts"); 376 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 377 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults"); 378 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 379 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults"); 380 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 381 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults"); 382 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 383 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill"); 384 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 385 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill"); 386 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 387 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations"); 388 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 389 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations"); 390 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 391 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages"); 392 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 393 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages"); 394 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 395 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations"); 396 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 397 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations"); 398 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 399 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages"); 400 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 401 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages"); 402 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 403 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking"); 404 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 405 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages"); 406 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 407 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups"); 408 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ppwakeups, CTLTYPE_UINT|CTLFLAG_RD, 409 0, VMMETEROFF(v_ppwakeups), vcnt, "IU", "vm_wait wakeups"); 410 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 411 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans"); 412 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 413 0, VMMETEROFF(v_dfree), vcnt, "IU", "Pages freed by daemon"); 414 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 415 0, VMMETEROFF(v_pfree), vcnt, "IU", "Pages freed by exiting processes"); 416 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 417 0, VMMETEROFF(v_tfree), vcnt, "IU", "Total pages freed"); 418 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 419 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls"); 420 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 421 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls"); 422 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 423 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls"); 424 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 425 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel"); 426 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 427 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()"); 428 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 429 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()"); 430 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 431 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()"); 432 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 433 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel"); 434 435 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 436 v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, 437 "Page size in bytes"); 438 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 439 v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, 440 "Total number of pages in system"); 441 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 442 v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, 443 "Number of pages reserved for deadlock"); 444 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 445 v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, 446 "Number of pages desired free"); 447 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 448 v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, 449 "Minimum number of pages desired free"); 450 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 451 v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, 452 "Number of pages free"); 453 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 454 v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, 455 "Number of pages wired down"); 456 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 457 v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, 458 "Number of pages active"); 459 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 460 v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, 461 "Number of pages desired inactive"); 462 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 463 v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, 464 "Number of pages inactive"); 465 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 466 v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, 467 "Number of pages on buffer cache queue"); 468 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 469 v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, 470 "Min number of pages desired on cache queue"); 471 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 472 v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, 473 "Max number of pages in cached obj"); 474 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 475 v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, 476 "Min number pages reserved for kernel"); 477 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 478 v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, 479 "Reserved number of pages for int code"); 480 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 481 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, 482 "Number of zeroing pages"); 483 484 /* 485 * No requirements. 486 */ 487 static int 488 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS) 489 { 490 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 491 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 492 struct globaldata *gd = arg1; 493 struct vmmeter vmm; 494 int off; 495 496 bzero(&vmm, sizeof(vmm)); 497 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 498 *(u_int *)((char *)&vmm + off) += 499 *(u_int *)((char *)&gd->gd_cnt + off); 500 } 501 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 502 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 503 } 504 505 /* 506 * Called from the low level boot code only. 507 */ 508 static void 509 vmmeter_init(void *dummy __unused) 510 { 511 int i; 512 513 for (i = 0; i < ncpus; ++i) { 514 struct sysctl_ctx_list *ctx; 515 struct sysctl_oid *oid; 516 struct globaldata *gd; 517 char name[32]; 518 519 ksnprintf(name, sizeof(name), "cpu%d", i); 520 521 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK); 522 sysctl_ctx_init(ctx); 523 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm), 524 OID_AUTO, name, CTLFLAG_RD, 0, ""); 525 526 gd = globaldata_find(i); 527 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 528 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD, 529 gd, sizeof(struct vmmeter), do_vmmeter_pcpu, 530 "S,vmmeter", "System per-cpu statistics"); 531 } 532 } 533 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0); 534