1/* $OpenBSD: uvmexp.h,v 1.15 2024/05/01 12:54:27 mpi Exp $ */ 2 3#ifndef _UVM_UVMEXP_ 4#define _UVM_UVMEXP_ 5 6/* 7 * CTL_VM identifiers 8 */ 9#define VM_METER 1 /* struct vmmeter */ 10#define VM_LOADAVG 2 /* struct loadavg */ 11#define VM_PSSTRINGS 3 /* PSSTRINGS */ 12#define VM_UVMEXP 4 /* struct uvmexp */ 13#define VM_SWAPENCRYPT 5 /* int */ 14#define VM_NKMEMPAGES 6 /* int - # kmem_map pages */ 15#define VM_ANONMIN 7 16#define VM_VTEXTMIN 8 17#define VM_VNODEMIN 9 18#define VM_MAXSLP 10 19#define VM_USPACE 11 20#define VM_MALLOC_CONF 12 /* config for userland malloc */ 21#define VM_MAXID 13 /* number of valid vm ids */ 22 23#define CTL_VM_NAMES { \ 24 { 0, 0 }, \ 25 { "vmmeter", CTLTYPE_STRUCT }, \ 26 { "loadavg", CTLTYPE_STRUCT }, \ 27 { "psstrings", CTLTYPE_STRUCT }, \ 28 { "uvmexp", CTLTYPE_STRUCT }, \ 29 { "swapencrypt", CTLTYPE_NODE }, \ 30 { "nkmempages", CTLTYPE_INT }, \ 31 { "anonmin", CTLTYPE_INT }, \ 32 { "vtextmin", CTLTYPE_INT }, \ 33 { "vnodemin", CTLTYPE_INT }, \ 34 { "maxslp", CTLTYPE_INT }, \ 35 { "uspace", CTLTYPE_INT }, \ 36 { "malloc_conf", CTLTYPE_STRING }, \ 37} 38 39/* 40 * uvmexp: global data structures that are exported to parts of the kernel 41 * other than the vm system. 42 * 43 * Locks used to protect struct members in this file: 44 * a atomic operations 45 * I immutable after creation 46 * K kernel lock 47 * F uvm_lock_fpageq 48 * L uvm_lock_pageq 49 * S uvm_swap_data_lock 50 * p copy of per-CPU counters, used only by userland. 51 */ 52struct uvmexp { 53 /* vm_page constants */ 54 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 55 int pagemask; /* page mask */ 56 int pageshift; /* page shift */ 57 58 /* vm_page counters */ 59 int npages; /* [I] number of pages we manage */ 60 int free; /* [F] number of free pages */ 61 int active; /* [L] # of active pages */ 62 int inactive; /* [L] # of pages that we free'd but may want back */ 63 int paging; /* number of pages in the process of being paged out */ 64 int wired; /* number of wired pages */ 65 66 int zeropages; /* [F] number of zero'd pages */ 67 int reserve_pagedaemon; /* [I] # of pages reserved for pagedaemon */ 68 int reserve_kernel; /* [I] # of pages reserved for kernel */ 69 int percpucaches; /* [a] # of pages in per-CPU caches */ 70 int vnodepages; /* XXX # of pages used by vnode page cache */ 71 int vtextpages; /* XXX # of pages used by vtext vnodes */ 72 73 /* pageout params */ 74 int freemin; /* [I] min number of free pages */ 75 int freetarg; /* [I] target number of free pages */ 76 int inactarg; /* target number of inactive pages */ 77 int wiredmax; /* [I] max number of wired pages */ 78 int anonmin; /* min threshold for anon pages */ 79 int vtextmin; /* min threshold for vtext pages */ 80 int vnodemin; /* min threshold for vnode pages */ 81 int anonminpct; /* min percent anon pages */ 82 int vtextminpct;/* min percent vtext pages */ 83 int vnodeminpct;/* min percent vnode pages */ 84 85 /* swap */ 86 int nswapdev; /* [S] number of configured swap devices in system */ 87 int swpages; /* [S] number of PAGE_SIZE'ed swap pages */ 88 int swpginuse; /* [S] number of swap pages in use */ 89 int swpgonly; /* [a] number of swap pages in use, not also in RAM */ 90 int nswget; /* [a] number of swap pages moved from disk to RAM */ 91 int nanon; /* XXX number total of anon's in system */ 92 int unused05; /* formerly nanonneeded */ 93 int unused06; /* formerly nfreeanon */ 94 95 /* stat counters */ 96 int faults; /* [p] page fault count */ 97 int traps; /* trap count */ 98 int intrs; /* interrupt count */ 99 int swtch; /* context switch count */ 100 int softs; /* software interrupt count */ 101 int syscalls; /* system calls */ 102 int pageins; /* [p] pagein operation count */ 103 /* pageouts are in pdpageouts below */ 104 int pcphit; /* [a] # of pagealloc from per-CPU cache */ 105 int pcpmiss; /* [a] # of times a per-CPU cache was empty */ 106 int pgswapin; /* pages swapped in */ 107 int pgswapout; /* pages swapped out */ 108 int forks; /* forks */ 109 int forks_ppwait; /* forks where parent waits */ 110 int forks_sharevm; /* forks where vmspace is shared */ 111 int pga_zerohit; /* pagealloc where zero wanted and zero 112 was available */ 113 int pga_zeromiss; /* pagealloc where zero wanted and zero 114 not available */ 115 int unused09; /* formerly zeroaborts */ 116 117 /* fault subcounters */ 118 int fltnoram; /* [p] # of times fault was out of ram */ 119 int fltnoanon; /* [p] # of times fault was out of anons */ 120 int fltnoamap; /* [p] # of times fault was out of amap chunks */ 121 int fltpgwait; /* [p] # of times fault had to wait on a page */ 122 int fltpgrele; /* [p] # of times fault found a released page */ 123 int fltrelck; /* [p] # of times fault relock called */ 124 int fltrelckok; /* [p] # of times fault relock is a success */ 125 int fltanget; /* [p] # of times fault gets anon page */ 126 int fltanretry; /* [p] # of times fault retrys an anon get */ 127 int fltamcopy; /* [p] # of times fault clears "needs copy" */ 128 int fltnamap; /* [p] # of times fault maps a neighbor anon page */ 129 int fltnomap; /* [p] # of times fault maps a neighbor obj page */ 130 int fltlget; /* [p] # of times fault does a locked pgo_get */ 131 int fltget; /* [p] # of times fault does an unlocked get */ 132 int flt_anon; /* [p] # of times fault anon (case 1a) */ 133 int flt_acow; /* [p] # of times fault anon cow (case 1b) */ 134 int flt_obj; /* [p] # of times fault is on object page (2a) */ 135 int flt_prcopy; /* [p] # of times fault promotes with copy (2b) */ 136 int flt_przero; /* [p] # of times fault promotes with zerofill (2b) */ 137 138 /* daemon counters */ 139 int pdwoke; /* [F] # of times daemon woke up */ 140 int pdrevs; /* number of times daemon rev'd clock hand */ 141 int pdswout; /* number of times daemon called for swapout */ 142 int pdfreed; /* number of pages daemon freed since boot */ 143 int pdscans; /* number of pages daemon scanned since boot */ 144 int pdanscan; /* number of anonymous pages scanned by daemon */ 145 int pdobscan; /* number of object pages scanned by daemon */ 146 int pdreact; /* number of pages daemon reactivated since boot */ 147 int pdbusy; /* number of times daemon found a busy page */ 148 int pdpageouts; /* number of times daemon started a pageout */ 149 int pdpending; /* number of times daemon got a pending pagout */ 150 int pddeact; /* number of pages daemon deactivates */ 151 int unused11; /* formerly pdreanon */ 152 int unused12; /* formerly pdrevnode */ 153 int unused13; /* formerly pdrevtext */ 154 155 int fpswtch; /* FPU context switches */ 156 int kmapent; /* number of kernel map entries */ 157}; 158 159struct _ps_strings { 160 void *val; 161}; 162 163#ifdef _KERNEL 164 165/* 166 * Per-cpu UVM counters. 167 */ 168extern struct cpumem *uvmexp_counters; 169 170enum uvm_exp_counters { 171 /* stat counters */ 172 faults, /* page fault count */ 173 pageins, /* pagein operation count */ 174 175 /* fault subcounters */ 176 flt_noram, /* number of times fault was out of ram */ 177 flt_noanon, /* number of times fault was out of anons */ 178 flt_noamap, /* number of times fault was out of amap chunks */ 179 flt_pgwait, /* number of times fault had to wait on a page */ 180 flt_pgrele, /* number of times fault found a released page */ 181 flt_relck, /* number of times fault relock called */ 182 flt_relckok, /* number of times fault relock is a success */ 183 flt_anget, /* number of times fault gets anon page */ 184 flt_anretry, /* number of times fault retrys an anon get */ 185 flt_amcopy, /* number of times fault clears "needs copy" */ 186 flt_namap, /* number of times fault maps a neighbor anon page */ 187 flt_nomap, /* number of times fault maps a neighbor obj page */ 188 flt_lget, /* number of times fault does a locked pgo_get */ 189 flt_get, /* number of times fault does an unlocked get */ 190 flt_anon, /* number of times fault anon (case 1a) */ 191 flt_acow, /* number of times fault anon cow (case 1b) */ 192 flt_obj, /* number of times fault is on object page (2a) */ 193 flt_prcopy, /* number of times fault promotes with copy (2b) */ 194 flt_przero, /* number of times fault promotes with zerofill (2b) */ 195 196 exp_ncounters 197}; 198 199#endif /* _KERNEL */ 200#endif /*_UVM_UVMEXP_ */ 201