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