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/* $OpenBSD: uvmexp.h,v 1.10 2022/08/29 11:09:31 mpi Exp $ */
#ifndef _UVM_UVMEXP_
#define _UVM_UVMEXP_
/*
* CTL_VM identifiers
*/
#define VM_METER 1 /* struct vmmeter */
#define VM_LOADAVG 2 /* struct loadavg */
#define VM_PSSTRINGS 3 /* PSSTRINGS */
#define VM_UVMEXP 4 /* struct uvmexp */
#define VM_SWAPENCRYPT 5 /* int */
#define VM_NKMEMPAGES 6 /* int - # kmem_map pages */
#define VM_ANONMIN 7
#define VM_VTEXTMIN 8
#define VM_VNODEMIN 9
#define VM_MAXSLP 10
#define VM_USPACE 11
#define VM_MALLOC_CONF 12 /* config for userland malloc */
#define VM_MAXID 13 /* number of valid vm ids */
#define CTL_VM_NAMES { \
{ 0, 0 }, \
{ "vmmeter", CTLTYPE_STRUCT }, \
{ "loadavg", CTLTYPE_STRUCT }, \
{ "psstrings", CTLTYPE_STRUCT }, \
{ "uvmexp", CTLTYPE_STRUCT }, \
{ "swapencrypt", CTLTYPE_NODE }, \
{ "nkmempages", CTLTYPE_INT }, \
{ "anonmin", CTLTYPE_INT }, \
{ "vtextmin", CTLTYPE_INT }, \
{ "vnodemin", CTLTYPE_INT }, \
{ "maxslp", CTLTYPE_INT }, \
{ "uspace", CTLTYPE_INT }, \
{ "malloc_conf", CTLTYPE_STRING }, \
}
/*
* uvmexp: global data structures that are exported to parts of the kernel
* other than the vm system.
*
* Locks used to protect struct members in this file:
* a atomic operations
* I immutable after creation
* K kernel lock
* F uvm_lock_fpageq
* S uvm_swap_data_lock
*/
struct uvmexp {
/* vm_page constants */
int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
int pagemask; /* page mask */
int pageshift; /* page shift */
/* vm_page counters */
int npages; /* [I] number of pages we manage */
int free; /* [F] number of free pages */
int active; /* number of active pages */
int inactive; /* number of pages that we free'd but may want back */
int paging; /* number of pages in the process of being paged out */
int wired; /* number of wired pages */
int zeropages; /* [F] number of zero'd pages */
int reserve_pagedaemon; /* [I] # of pages reserved for pagedaemon */
int reserve_kernel; /* [I] # of pages reserved for kernel */
int unused01; /* formerly anonpages */
int vnodepages; /* XXX # of pages used by vnode page cache */
int vtextpages; /* XXX # of pages used by vtext vnodes */
/* pageout params */
int freemin; /* min number of free pages */
int freetarg; /* target number of free pages */
int inactarg; /* target number of inactive pages */
int wiredmax; /* max number of wired pages */
int anonmin; /* min threshold for anon pages */
int vtextmin; /* min threshold for vtext pages */
int vnodemin; /* min threshold for vnode pages */
int anonminpct; /* min percent anon pages */
int vtextminpct;/* min percent vtext pages */
int vnodeminpct;/* min percent vnode pages */
/* swap */
int nswapdev; /* [S] number of configured swap devices in system */
int swpages; /* [S] number of PAGE_SIZE'ed swap pages */
int swpginuse; /* [K] number of swap pages in use */
int swpgonly; /* [a] number of swap pages in use, not also in RAM */
int nswget; /* [a] number of swap pages moved from disk to RAM */
int nanon; /* XXX number total of anon's in system */
int unused05; /* formerly nanonneeded */
int unused06; /* formerly nfreeanon */
/* stat counters */
int faults; /* page fault count */
int traps; /* trap count */
int intrs; /* interrupt count */
int swtch; /* context switch count */
int softs; /* software interrupt count */
int syscalls; /* system calls */
int pageins; /* pagein operation count */
/* pageouts are in pdpageouts below */
int unused07; /* formerly obsolete_swapins */
int unused08; /* formerly obsolete_swapouts */
int pgswapin; /* pages swapped in */
int pgswapout; /* pages swapped out */
int forks; /* forks */
int forks_ppwait; /* forks where parent waits */
int forks_sharevm; /* forks where vmspace is shared */
int pga_zerohit; /* pagealloc where zero wanted and zero
was available */
int pga_zeromiss; /* pagealloc where zero wanted and zero
not available */
int unused09; /* formerly zeroaborts */
/* fault subcounters */
int fltnoram; /* number of times fault was out of ram */
int fltnoanon; /* number of times fault was out of anons */
int fltnoamap; /* number of times fault was out of amap chunks */
int fltpgwait; /* number of times fault had to wait on a page */
int fltpgrele; /* number of times fault found a released page */
int fltrelck; /* number of times fault relock called */
int fltrelckok; /* number of times fault relock is a success */
int fltanget; /* number of times fault gets anon page */
int fltanretry; /* number of times fault retrys an anon get */
int fltamcopy; /* number of times fault clears "needs copy" */
int fltnamap; /* number of times fault maps a neighbor anon page */
int fltnomap; /* number of times fault maps a neighbor obj page */
int fltlget; /* number of times fault does a locked pgo_get */
int fltget; /* number of times fault does an unlocked get */
int flt_anon; /* number of times fault anon (case 1a) */
int flt_acow; /* number of times fault anon cow (case 1b) */
int flt_obj; /* number of times fault is on object page (2a) */
int flt_prcopy; /* number of times fault promotes with copy (2b) */
int flt_przero; /* number of times fault promotes with zerofill (2b) */
/* daemon counters */
int pdwoke; /* number of times daemon woke up */
int pdrevs; /* number of times daemon rev'd clock hand */
int pdswout; /* number of times daemon called for swapout */
int pdfreed; /* number of pages daemon freed since boot */
int pdscans; /* number of pages daemon scanned since boot */
int pdanscan; /* number of anonymous pages scanned by daemon */
int pdobscan; /* number of object pages scanned by daemon */
int pdreact; /* number of pages daemon reactivated since boot */
int pdbusy; /* number of times daemon found a busy page */
int pdpageouts; /* number of times daemon started a pageout */
int pdpending; /* number of times daemon got a pending pagout */
int pddeact; /* number of pages daemon deactivates */
int unused11; /* formerly pdreanon */
int unused12; /* formerly pdrevnode */
int unused13; /* formerly pdrevtext */
int fpswtch; /* FPU context switches */
int kmapent; /* number of kernel map entries */
};
struct _ps_strings {
void *val;
};
#ifdef _KERNEL
/*
* Per-cpu UVM counters.
*/
extern struct cpumem *uvmexp_counters;
enum uvm_exp_counters {
/* stat counters */
faults, /* page fault count */
pageins, /* pagein operation count */
/* fault subcounters */
flt_noram, /* number of times fault was out of ram */
flt_noanon, /* number of times fault was out of anons */
flt_noamap, /* number of times fault was out of amap chunks */
flt_pgwait, /* number of times fault had to wait on a page */
flt_pgrele, /* number of times fault found a released page */
flt_relck, /* number of times fault relock called */
flt_relckok, /* number of times fault relock is a success */
flt_anget, /* number of times fault gets anon page */
flt_anretry, /* number of times fault retrys an anon get */
flt_amcopy, /* number of times fault clears "needs copy" */
flt_namap, /* number of times fault maps a neighbor anon page */
flt_nomap, /* number of times fault maps a neighbor obj page */
flt_lget, /* number of times fault does a locked pgo_get */
flt_get, /* number of times fault does an unlocked get */
flt_anon, /* number of times fault anon (case 1a) */
flt_acow, /* number of times fault anon cow (case 1b) */
flt_obj, /* number of times fault is on object page (2a) */
flt_prcopy, /* number of times fault promotes with copy (2b) */
flt_przero, /* number of times fault promotes with zerofill (2b) */
exp_ncounters
};
#endif /* _KERNEL */
#endif /*_UVM_UVMEXP_ */
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