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