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 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 64 CTLFLAG_RW, &vmstats.v_free_target, 0, ""); 65 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 66 CTLFLAG_RW, &vmstats.v_free_reserved, 0, ""); 67 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 68 CTLFLAG_RW, &vmstats.v_inactive_target, 0, ""); 69 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 70 CTLFLAG_RW, &vmstats.v_cache_min, 0, ""); 71 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 72 CTLFLAG_RW, &vmstats.v_cache_max, 0, ""); 73 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 74 CTLFLAG_RW, &vmstats.v_pageout_free_min, 0, ""); 75 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 76 CTLFLAG_RW, &vmstats.v_free_severe, 0, ""); 77 78 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD, 79 &averunnable, loadavg, "Machine loadaverage history"); 80 81 static int do_vmtotal_callback(struct proc *p, void *data); 82 83 /* 84 * No requirements. 85 */ 86 static int 87 do_vmtotal(SYSCTL_HANDLER_ARGS) 88 { 89 struct vmtotal total; 90 struct vmtotal *totalp; 91 vm_object_t object; 92 93 bzero(&total, sizeof(total)); 94 totalp = &total; 95 96 /* 97 * Mark all objects as inactive. 98 */ 99 lwkt_gettoken(&vmobj_token); 100 for (object = TAILQ_FIRST(&vm_object_list); 101 object != NULL; 102 object = TAILQ_NEXT(object,object_list)) { 103 if (object->type == OBJT_MARKER) 104 continue; 105 vm_object_clear_flag(object, OBJ_ACTIVE); 106 } 107 lwkt_reltoken(&vmobj_token); 108 109 /* 110 * Calculate process statistics. 111 */ 112 allproc_scan(do_vmtotal_callback, totalp); 113 114 /* 115 * Calculate object memory usage statistics. 116 */ 117 lwkt_gettoken(&vmobj_token); 118 for (object = TAILQ_FIRST(&vm_object_list); 119 object != NULL; 120 object = TAILQ_NEXT(object, object_list)) { 121 /* 122 * devices, like /dev/mem, will badly skew our totals. 123 * markers aren't real objects. 124 */ 125 if (object->type == OBJT_MARKER) 126 continue; 127 if (object->type == OBJT_DEVICE) 128 continue; 129 totalp->t_vm += object->size; 130 totalp->t_rm += object->resident_page_count; 131 if (object->flags & OBJ_ACTIVE) { 132 totalp->t_avm += object->size; 133 totalp->t_arm += object->resident_page_count; 134 } 135 if (object->shadow_count > 1) { 136 /* shared object */ 137 totalp->t_vmshr += object->size; 138 totalp->t_rmshr += object->resident_page_count; 139 if (object->flags & OBJ_ACTIVE) { 140 totalp->t_avmshr += object->size; 141 totalp->t_armshr += object->resident_page_count; 142 } 143 } 144 } 145 lwkt_reltoken(&vmobj_token); 146 totalp->t_free = vmstats.v_free_count + vmstats.v_cache_count; 147 148 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); 149 } 150 151 /* 152 * The caller must hold proc_token. 153 */ 154 static int 155 do_vmtotal_callback(struct proc *p, void *data) 156 { 157 struct vmtotal *totalp = data; 158 struct lwp *lp; 159 vm_map_entry_t entry; 160 vm_map_t map; 161 int paging; 162 163 if (p->p_flag & P_SYSTEM) 164 return(0); 165 166 FOREACH_LWP_IN_PROC(lp, p) { 167 switch (lp->lwp_stat) { 168 case LSSTOP: 169 case LSSLEEP: 170 if ((p->p_flag & P_SWAPPEDOUT) == 0) { 171 if ((lp->lwp_flag & LWP_SINTR) == 0) 172 totalp->t_dw++; 173 else if (lp->lwp_slptime < maxslp) 174 totalp->t_sl++; 175 } else if (lp->lwp_slptime < maxslp) { 176 totalp->t_sw++; 177 } 178 if (lp->lwp_slptime >= maxslp) 179 return(0); 180 break; 181 182 case LSRUN: 183 if (p->p_flag & P_SWAPPEDOUT) 184 totalp->t_sw++; 185 else 186 totalp->t_rq++; 187 if (p->p_stat == SIDL) 188 return(0); 189 break; 190 191 default: 192 return (0); 193 } 194 } 195 196 /* 197 * Note active objects. 198 */ 199 paging = 0; 200 lwkt_gettoken(&vm_token); 201 if (p->p_vmspace) { 202 map = &p->p_vmspace->vm_map; 203 vm_map_lock_read(map); 204 for (entry = map->header.next; 205 entry != &map->header; entry = entry->next) { 206 if (entry->maptype != VM_MAPTYPE_NORMAL && 207 entry->maptype != VM_MAPTYPE_VPAGETABLE) { 208 continue; 209 } 210 if (entry->object.vm_object == NULL) 211 continue; 212 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE); 213 paging |= entry->object.vm_object->paging_in_progress; 214 } 215 vm_map_unlock_read(map); 216 } 217 lwkt_reltoken(&vm_token); 218 if (paging) 219 totalp->t_pw++; 220 return(0); 221 } 222 223 /* 224 * No requirements. 225 */ 226 static int 227 do_vmstats(SYSCTL_HANDLER_ARGS) 228 { 229 struct vmstats vms = vmstats; 230 return (sysctl_handle_opaque(oidp, &vms, sizeof(vms), req)); 231 } 232 233 /* 234 * No requirements. 235 */ 236 static int 237 do_vmmeter(SYSCTL_HANDLER_ARGS) 238 { 239 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 240 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 241 struct vmmeter vmm; 242 int i; 243 244 bzero(&vmm, sizeof(vmm)); 245 for (i = 0; i < ncpus; ++i) { 246 int off; 247 struct globaldata *gd = globaldata_find(i); 248 249 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 250 *(u_int *)((char *)&vmm + off) += 251 *(u_int *)((char *)&gd->gd_cnt + off); 252 } 253 254 } 255 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 256 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 257 } 258 259 /* 260 * vcnt() - accumulate statistics from the cnt structure for each cpu 261 * 262 * The vmmeter structure is now per-cpu as well as global. Those 263 * statistics which can be kept on a per-cpu basis (to avoid cache 264 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 265 * statistics, such as v_free_reserved, are left in the global 266 * structure. 267 * 268 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 269 * 270 * No requirements. 271 */ 272 static int 273 vcnt(SYSCTL_HANDLER_ARGS) 274 { 275 int i; 276 int count = 0; 277 int offset = arg2; 278 279 for (i = 0; i < ncpus; ++i) { 280 struct globaldata *gd = globaldata_find(i); 281 count += *(int *)((char *)&gd->gd_cnt + offset); 282 } 283 return(SYSCTL_OUT(req, &count, sizeof(int))); 284 } 285 286 /* 287 * No requirements. 288 */ 289 static int 290 vcnt_intr(SYSCTL_HANDLER_ARGS) 291 { 292 int i; 293 int count = 0; 294 295 for (i = 0; i < ncpus; ++i) { 296 struct globaldata *gd = globaldata_find(i); 297 298 count += gd->gd_cnt.v_intr + gd->gd_cnt.v_ipi + 299 gd->gd_cnt.v_timer; 300 } 301 return(SYSCTL_OUT(req, &count, sizeof(int))); 302 } 303 304 #define VMMETEROFF(var) offsetof(struct vmmeter, var) 305 306 SYSCTL_PROC(_vm, OID_AUTO, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD, 307 0, sizeof(struct vmtotal), do_vmtotal, "S,vmtotal", 308 "System virtual memory aggregate"); 309 SYSCTL_PROC(_vm, OID_AUTO, vmstats, CTLTYPE_OPAQUE|CTLFLAG_RD, 310 0, sizeof(struct vmstats), do_vmstats, "S,vmstats", 311 "System virtual memory statistics"); 312 SYSCTL_PROC(_vm, OID_AUTO, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 313 0, sizeof(struct vmmeter), do_vmmeter, "S,vmmeter", 314 "System statistics"); 315 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 316 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 317 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); 318 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 319 320 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD, 321 0, VMMETEROFF(v_swtch), vcnt, "IU", "Context switches"); 322 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_coll, CTLTYPE_UINT|CTLFLAG_RD, 323 0, VMMETEROFF(v_intrans_coll), vcnt, "IU", ""); 324 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intrans_wait, CTLTYPE_UINT|CTLFLAG_RD, 325 0, VMMETEROFF(v_intrans_wait), vcnt, "IU", ""); 326 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_ints, CTLTYPE_UINT|CTLFLAG_RD, 327 0, VMMETEROFF(v_forwarded_ints), vcnt, "IU", ""); 328 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_hits, CTLTYPE_UINT|CTLFLAG_RD, 329 0, VMMETEROFF(v_forwarded_hits), vcnt, "IU", ""); 330 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_forwarded_misses, CTLTYPE_UINT|CTLFLAG_RD, 331 0, VMMETEROFF(v_forwarded_misses), vcnt, "IU", ""); 332 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD, 333 0, VMMETEROFF(v_trap), vcnt, "IU", "Traps"); 334 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD, 335 0, VMMETEROFF(v_syscall), vcnt, "IU", "Syscalls"); 336 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD, 337 0, VMMETEROFF(v_intr), vcnt_intr, "IU", "Hardware interrupts"); 338 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_ipi, CTLTYPE_UINT|CTLFLAG_RD, 339 0, VMMETEROFF(v_ipi), vcnt, "IU", "Inter-processor interrupts"); 340 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_timer, CTLTYPE_UINT|CTLFLAG_RD, 341 0, VMMETEROFF(v_timer), vcnt, "IU", "LAPIC timer interrupts"); 342 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD, 343 0, VMMETEROFF(v_soft), vcnt, "IU", "Software interrupts"); 344 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD, 345 0, VMMETEROFF(v_vm_faults), vcnt, "IU", "VM faults"); 346 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD, 347 0, VMMETEROFF(v_cow_faults), vcnt, "IU", "COW faults"); 348 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD, 349 0, VMMETEROFF(v_cow_optim), vcnt, "IU", "Optimized COW faults"); 350 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD, 351 0, VMMETEROFF(v_zfod), vcnt, "IU", "Zero fill"); 352 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD, 353 0, VMMETEROFF(v_ozfod), vcnt, "IU", "Optimized zero fill"); 354 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD, 355 0, VMMETEROFF(v_swapin), vcnt, "IU", "Swapin operations"); 356 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD, 357 0, VMMETEROFF(v_swapout), vcnt, "IU", "Swapout operations"); 358 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD, 359 0, VMMETEROFF(v_swappgsin), vcnt, "IU", "Swapin pages"); 360 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD, 361 0, VMMETEROFF(v_swappgsout), vcnt, "IU", "Swapout pages"); 362 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD, 363 0, VMMETEROFF(v_vnodein), vcnt, "IU", "Vnodein operations"); 364 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD, 365 0, VMMETEROFF(v_vnodeout), vcnt, "IU", "Vnodeout operations"); 366 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD, 367 0, VMMETEROFF(v_vnodepgsin), vcnt, "IU", "Vnodein pages"); 368 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD, 369 0, VMMETEROFF(v_vnodepgsout), vcnt, "IU", "Vnodeout pages"); 370 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD, 371 0, VMMETEROFF(v_intrans), vcnt, "IU", "In transit page blocking"); 372 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD, 373 0, VMMETEROFF(v_reactivated), vcnt, "IU", "Reactivated pages"); 374 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD, 375 0, VMMETEROFF(v_pdwakeups), vcnt, "IU", "Pagedaemon wakeups"); 376 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD, 377 0, VMMETEROFF(v_pdpages), vcnt, "IU", "Pagedaemon page scans"); 378 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD, 379 0, VMMETEROFF(v_dfree), vcnt, "IU", ""); 380 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD, 381 0, VMMETEROFF(v_pfree), vcnt, "IU", ""); 382 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD, 383 0, VMMETEROFF(v_tfree), vcnt, "IU", ""); 384 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD, 385 0, VMMETEROFF(v_forks), vcnt, "IU", "Number of fork() calls"); 386 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD, 387 0, VMMETEROFF(v_vforks), vcnt, "IU", "Number of vfork() calls"); 388 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD, 389 0, VMMETEROFF(v_rforks), vcnt, "IU", "Number of rfork() calls"); 390 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD, 391 0, VMMETEROFF(v_kthreads), vcnt, "IU", "Number of fork() calls by kernel"); 392 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD, 393 0, VMMETEROFF(v_forkpages), vcnt, "IU", "VM pages affected by fork()"); 394 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD, 395 0, VMMETEROFF(v_vforkpages), vcnt, "IU", "VM pages affected by vfork()"); 396 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD, 397 0, VMMETEROFF(v_rforkpages), vcnt, "IU", "VM pages affected by rfork()"); 398 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD, 399 0, VMMETEROFF(v_kthreadpages), vcnt, "IU", "VM pages affected by fork() by kernel"); 400 401 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 402 v_page_size, CTLFLAG_RD, &vmstats.v_page_size, 0, ""); 403 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 404 v_page_count, CTLFLAG_RD, &vmstats.v_page_count, 0, ""); 405 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 406 v_free_reserved, CTLFLAG_RD, &vmstats.v_free_reserved, 0, ""); 407 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 408 v_free_target, CTLFLAG_RD, &vmstats.v_free_target, 0, ""); 409 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 410 v_free_min, CTLFLAG_RD, &vmstats.v_free_min, 0, ""); 411 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 412 v_free_count, CTLFLAG_RD, &vmstats.v_free_count, 0, ""); 413 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 414 v_wire_count, CTLFLAG_RD, &vmstats.v_wire_count, 0, ""); 415 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 416 v_active_count, CTLFLAG_RD, &vmstats.v_active_count, 0, ""); 417 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 418 v_inactive_target, CTLFLAG_RD, &vmstats.v_inactive_target, 0, ""); 419 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 420 v_inactive_count, CTLFLAG_RD, &vmstats.v_inactive_count, 0, ""); 421 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 422 v_cache_count, CTLFLAG_RD, &vmstats.v_cache_count, 0, ""); 423 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 424 v_cache_min, CTLFLAG_RD, &vmstats.v_cache_min, 0, ""); 425 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 426 v_cache_max, CTLFLAG_RD, &vmstats.v_cache_max, 0, ""); 427 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 428 v_pageout_free_min, CTLFLAG_RD, &vmstats.v_pageout_free_min, 0, ""); 429 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 430 v_interrupt_free_min, CTLFLAG_RD, &vmstats.v_interrupt_free_min, 0, ""); 431 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 432 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, ""); 433 434 /* 435 * No requirements. 436 */ 437 static int 438 do_vmmeter_pcpu(SYSCTL_HANDLER_ARGS) 439 { 440 int boffset = offsetof(struct vmmeter, vmmeter_uint_begin); 441 int eoffset = offsetof(struct vmmeter, vmmeter_uint_end); 442 struct globaldata *gd = arg1; 443 struct vmmeter vmm; 444 int off; 445 446 bzero(&vmm, sizeof(vmm)); 447 for (off = boffset; off <= eoffset; off += sizeof(u_int)) { 448 *(u_int *)((char *)&vmm + off) += 449 *(u_int *)((char *)&gd->gd_cnt + off); 450 } 451 vmm.v_intr += vmm.v_ipi + vmm.v_timer; 452 return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req)); 453 } 454 455 /* 456 * Called from the low level boot code only. 457 */ 458 static void 459 vmmeter_init(void *dummy __unused) 460 { 461 int i; 462 463 for (i = 0; i < ncpus; ++i) { 464 struct sysctl_ctx_list *ctx; 465 struct sysctl_oid *oid; 466 struct globaldata *gd; 467 char name[32]; 468 469 ksnprintf(name, sizeof(name), "cpu%d", i); 470 471 ctx = kmalloc(sizeof(*ctx), M_TEMP, M_WAITOK); 472 sysctl_ctx_init(ctx); 473 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_vm), 474 OID_AUTO, name, CTLFLAG_RD, 0, ""); 475 476 gd = globaldata_find(i); 477 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 478 "vmmeter", CTLTYPE_OPAQUE|CTLFLAG_RD, 479 gd, sizeof(struct vmmeter), do_vmmeter_pcpu, 480 "S,vmmeter", "System per-cpu statistics"); 481 } 482 } 483 SYSINIT(vmmeter, SI_SUB_PSEUDO, SI_ORDER_ANY, vmmeter_init, 0); 484