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