Index: head/sys/vm/vm_meter.c =================================================================== --- head/sys/vm/vm_meter.c (revision 317694) +++ head/sys/vm/vm_meter.c (revision 317695) @@ -1,336 +1,355 @@ /*- * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 */ #include __FBSDID("$FreeBSD$"); #include "opt_compat.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct vmmeter vm_cnt = { .v_swtch = EARLY_COUNTER, .v_trap = EARLY_COUNTER, .v_syscall = EARLY_COUNTER, .v_intr = EARLY_COUNTER, .v_soft = EARLY_COUNTER, .v_vm_faults = EARLY_COUNTER, .v_io_faults = EARLY_COUNTER, .v_cow_faults = EARLY_COUNTER, .v_cow_optim = EARLY_COUNTER, .v_zfod = EARLY_COUNTER, .v_ozfod = EARLY_COUNTER, .v_swapin = EARLY_COUNTER, .v_swapout = EARLY_COUNTER, .v_swappgsin = EARLY_COUNTER, .v_swappgsout = EARLY_COUNTER, .v_vnodein = EARLY_COUNTER, .v_vnodeout = EARLY_COUNTER, .v_vnodepgsin = EARLY_COUNTER, .v_vnodepgsout = EARLY_COUNTER, .v_intrans = EARLY_COUNTER, .v_reactivated = EARLY_COUNTER, .v_pdwakeups = EARLY_COUNTER, .v_pdpages = EARLY_COUNTER, .v_pdshortfalls = EARLY_COUNTER, .v_dfree = EARLY_COUNTER, .v_pfree = EARLY_COUNTER, .v_tfree = EARLY_COUNTER, .v_forks = EARLY_COUNTER, .v_vforks = EARLY_COUNTER, .v_rforks = EARLY_COUNTER, .v_kthreads = EARLY_COUNTER, .v_forkpages = EARLY_COUNTER, .v_vforkpages = EARLY_COUNTER, .v_rforkpages = EARLY_COUNTER, .v_kthreadpages = EARLY_COUNTER, }; static void vmcounter_startup(void) { counter_u64_t *cnt = (counter_u64_t *)&vm_cnt; COUNTER_ARRAY_ALLOC(cnt, VM_METER_NCOUNTERS, M_WAITOK); } SYSINIT(counter, SI_SUB_CPU, SI_ORDER_FOURTH + 1, vmcounter_startup, NULL); SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold"); SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages"); SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock"); SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive"); SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel"); SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point"); static int sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) { #ifdef SCTL_MASK32 u_int32_t la[4]; if (req->flags & SCTL_MASK32) { la[0] = averunnable.ldavg[0]; la[1] = averunnable.ldavg[1]; la[2] = averunnable.ldavg[2]; la[3] = averunnable.fscale; return SYSCTL_OUT(req, la, sizeof(la)); } else #endif return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); } SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg", "Machine loadaverage history"); /* * This function aims to determine if the object is mapped, * specifically, if it is referenced by a vm_map_entry. Because * objects occasionally acquire transient references that do not * represent a mapping, the method used here is inexact. However, it * has very low overhead and is good enough for the advisory * vm.vmtotal sysctl. */ static bool is_object_active(vm_object_t obj) { return (obj->ref_count > obj->shadow_count); } static int vmtotal(SYSCTL_HANDLER_ARGS) { struct vmtotal total; vm_object_t object; struct proc *p; struct thread *td; bzero(&total, sizeof(total)); /* * Calculate process statistics. */ sx_slock(&allproc_lock); FOREACH_PROC_IN_SYSTEM(p) { if ((p->p_flag & P_SYSTEM) != 0) continue; PROC_LOCK(p); if (p->p_state != PRS_NEW) { FOREACH_THREAD_IN_PROC(p, td) { thread_lock(td); switch (td->td_state) { case TDS_INHIBITED: if (TD_IS_SWAPPED(td)) total.t_sw++; else if (TD_IS_SLEEPING(td)) { if (td->td_priority <= PZERO) total.t_dw++; else total.t_sl++; if (td->td_wchan == &vm_cnt.v_free_count) total.t_pw++; } break; case TDS_CAN_RUN: total.t_sw++; break; case TDS_RUNQ: case TDS_RUNNING: total.t_rq++; break; default: break; } thread_unlock(td); } } PROC_UNLOCK(p); } sx_sunlock(&allproc_lock); /* * Calculate object memory usage statistics. */ mtx_lock(&vm_object_list_mtx); TAILQ_FOREACH(object, &vm_object_list, object_list) { /* * Perform unsynchronized reads on the object. In * this case, the lack of synchronization should not * impair the accuracy of the reported statistics. */ if ((object->flags & OBJ_FICTITIOUS) != 0) { /* * Devices, like /dev/mem, will badly skew our totals. */ continue; } if (object->ref_count == 0) { /* * Also skip unreferenced objects, including * vnodes representing mounted file systems. */ continue; } if (object->ref_count == 1 && (object->flags & OBJ_NOSPLIT) != 0) { /* * Also skip otherwise unreferenced swap * objects backing tmpfs vnodes, and POSIX or * SysV shared memory. */ continue; } total.t_vm += object->size; total.t_rm += object->resident_page_count; if (is_object_active(object)) { total.t_avm += object->size; total.t_arm += object->resident_page_count; } if (object->shadow_count > 1) { /* shared object */ total.t_vmshr += object->size; total.t_rmshr += object->resident_page_count; if (is_object_active(object)) { total.t_avmshr += object->size; total.t_armshr += object->resident_page_count; } } } mtx_unlock(&vm_object_list_mtx); total.t_free = vm_cnt.v_free_count; return (sysctl_handle_opaque(oidp, &total, sizeof(total), req)); } SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE, 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal", "System virtual memory statistics"); SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); +static int +sysctl_handle_vmstat(SYSCTL_HANDLER_ARGS) +{ + uint64_t val; +#ifdef COMPAT_FREEBSD11 + uint32_t val32; +#endif + + val = counter_u64_fetch(*(counter_u64_t *)arg1); +#ifdef COMPAT_FREEBSD11 + if (req->oldlen == sizeof(val32)) { + val32 = val; /* truncate */ + return (SYSCTL_OUT(req, &val32, sizeof(val32))); + } +#endif + return (SYSCTL_OUT(req, &val, sizeof(val))); +} + #define VM_STATS(parent, var, descr) \ - SYSCTL_COUNTER_U64(parent, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, descr) + SYSCTL_OID(parent, OID_AUTO, var, CTLTYPE_U64 | CTLFLAG_MPSAFE | \ + CTLFLAG_RD, &vm_cnt.var, 0, sysctl_handle_vmstat, "QU", descr); #define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr) #define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr) VM_STATS_SYS(v_swtch, "Context switches"); VM_STATS_SYS(v_trap, "Traps"); VM_STATS_SYS(v_syscall, "System calls"); VM_STATS_SYS(v_intr, "Device interrupts"); VM_STATS_SYS(v_soft, "Software interrupts"); VM_STATS_VM(v_vm_faults, "Address memory faults"); VM_STATS_VM(v_io_faults, "Page faults requiring I/O"); VM_STATS_VM(v_cow_faults, "Copy-on-write faults"); VM_STATS_VM(v_cow_optim, "Optimized COW faults"); VM_STATS_VM(v_zfod, "Pages zero-filled on demand"); VM_STATS_VM(v_ozfod, "Optimized zero fill pages"); VM_STATS_VM(v_swapin, "Swap pager pageins"); VM_STATS_VM(v_swapout, "Swap pager pageouts"); VM_STATS_VM(v_swappgsin, "Swap pages swapped in"); VM_STATS_VM(v_swappgsout, "Swap pages swapped out"); VM_STATS_VM(v_vnodein, "Vnode pager pageins"); VM_STATS_VM(v_vnodeout, "Vnode pager pageouts"); VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in"); VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out"); VM_STATS_VM(v_intrans, "In transit page faults"); VM_STATS_VM(v_reactivated, "Pages reactivated by pagedaemon"); VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups"); VM_STATS_VM(v_pdpages, "Pages analyzed by pagedaemon"); VM_STATS_VM(v_pdshortfalls, "Page reclamation shortfalls"); VM_STATS_VM(v_dfree, "Pages freed by pagedaemon"); VM_STATS_VM(v_pfree, "Pages freed by exiting processes"); VM_STATS_VM(v_tfree, "Total pages freed"); VM_STATS_VM(v_forks, "Number of fork() calls"); VM_STATS_VM(v_vforks, "Number of vfork() calls"); VM_STATS_VM(v_rforks, "Number of rfork() calls"); VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel"); VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); #define VM_STATS_UINT(var, descr) \ SYSCTL_UINT(_vm_stats_vm, OID_AUTO, var, CTLFLAG_RD, &vm_cnt.var, 0, descr) VM_STATS_UINT(v_page_size, "Page size in bytes"); VM_STATS_UINT(v_page_count, "Total number of pages in system"); VM_STATS_UINT(v_free_reserved, "Pages reserved for deadlock"); VM_STATS_UINT(v_free_target, "Pages desired free"); VM_STATS_UINT(v_free_min, "Minimum low-free-pages threshold"); VM_STATS_UINT(v_free_count, "Free pages"); VM_STATS_UINT(v_wire_count, "Wired pages"); VM_STATS_UINT(v_active_count, "Active pages"); VM_STATS_UINT(v_inactive_target, "Desired inactive pages"); VM_STATS_UINT(v_inactive_count, "Inactive pages"); VM_STATS_UINT(v_laundry_count, "Pages eligible for laundering"); VM_STATS_UINT(v_pageout_free_min, "Min pages reserved for kernel"); VM_STATS_UINT(v_interrupt_free_min, "Reserved pages for interrupt code"); VM_STATS_UINT(v_free_severe, "Severe page depletion point"); #ifdef COMPAT_FREEBSD11 /* * Provide compatibility sysctls for the benefit of old utilities which exit * with an error if they cannot be found. */ SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, SYSCTL_NULL_UINT_PTR, 0, "Dummy for compatibility"); #endif