/* $NetBSD: uvm_extern.h,v 1.232 2021/05/31 10:57:02 riastradh Exp $ */ /* * Copyright (c) 1997 Charles D. Cranor and Washington University. * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp */ /*- * Copyright (c) 1991, 1992, 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_extern.h 8.5 (Berkeley) 5/3/95 */ #ifndef _UVM_UVM_EXTERN_H_ #define _UVM_UVM_EXTERN_H_ /* * uvm_extern.h: this file defines the external interface to the VM system. * * this should be the only file included by non-VM parts of the kernel * which need access to VM services. if you want to know the interface * to the MI VM layer without knowing the details, this is the file to * learn. * * NOTE: vm system calls are prototyped in syscallargs.h */ #include /* * defines */ /* * the following defines are for uvm_map and functions which call it. */ /* protections bits */ #define UVM_PROT_MASK 0x07 /* protection mask */ #define UVM_PROT_NONE 0x00 /* protection none */ #define UVM_PROT_ALL 0x07 /* everything */ #define UVM_PROT_READ 0x01 /* read */ #define UVM_PROT_WRITE 0x02 /* write */ #define UVM_PROT_EXEC 0x04 /* exec */ /* protection short codes */ #define UVM_PROT_R 0x01 /* read */ #define UVM_PROT_W 0x02 /* write */ #define UVM_PROT_RW 0x03 /* read-write */ #define UVM_PROT_X 0x04 /* exec */ #define UVM_PROT_RX 0x05 /* read-exec */ #define UVM_PROT_WX 0x06 /* write-exec */ #define UVM_PROT_RWX 0x07 /* read-write-exec */ /* 0x08: not used */ /* inherit codes */ #define UVM_INH_MASK 0x30 /* inherit mask */ #define UVM_INH_SHARE 0x00 /* "share" */ #define UVM_INH_COPY 0x10 /* "copy" */ #define UVM_INH_NONE 0x20 /* "none" */ #define UVM_INH_DONATE 0x30 /* "donate" << not used */ /* 0x40, 0x80: not used */ /* bits 0x700: max protection, 0x800: not used */ /* bits 0x7000: advice, 0x8000: not used */ /* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ #define UVM_ADV_NORMAL 0x0 /* 'normal' */ #define UVM_ADV_RANDOM 0x1 /* 'random' */ #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ #define UVM_ADV_WILLNEED 0x3 /* pages will be needed */ #define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */ #define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */ #define UVM_ADV_MASK 0x7 /* mask */ /* bits 0xffff0000: mapping flags */ #define UVM_FLAG_FIXED 0x00010000 /* find space */ #define UVM_FLAG_OVERLAY 0x00020000 /* establish overlay */ #define UVM_FLAG_NOMERGE 0x00040000 /* don't merge map entries */ #define UVM_FLAG_COPYONW 0x00080000 /* set copy_on_write flag */ #define UVM_FLAG_AMAPPAD 0x00100000 /* for bss: pad amap */ #define UVM_FLAG_TRYLOCK 0x00200000 /* fail if we can not lock map */ #define UVM_FLAG_NOWAIT 0x00400000 /* not allowed to sleep */ #define UVM_FLAG_WAITVA 0x00800000 /* wait for va */ #define UVM_FLAG_VAONLY 0x02000000 /* unmap: no pages are mapped */ #define UVM_FLAG_COLORMATCH 0x04000000 /* match color given in off */ #define UVM_FLAG_UNMAP 0x08000000 /* unmap existing entries */ #define UVM_FLAG_BITS "\177\020\ F\0\3\ :\0PROT=NONE\0\ :\1PROT=R\0\ :\2PROT=W\0\ :\3PROT=RW\0\ :\4PROT=X\0\ :\5PROT=RX\0\ :\6PROT=WX\0\ :\7PROT=RWX\0\ F\4\2\ :\0INH=SHARE\0\ :\1INH=COPY\0\ :\2INH=NONE\0\ :\3INH=DONATE\0\ F\10\3\ :\0MAXPROT=NONE\0\ :\1MAXPROT=R\0\ :\2MAXPROT=W\0\ :\3MAXPROT=RW\0\ :\4MAXPROT=X\0\ :\5MAXPROT=RX\0\ :\6MAXPROT=WX\0\ :\7MAXPROT=RWX\0\ F\14\3\ :\0ADV=NORMAL\0\ :\1ADV=RANDOM\0\ :\2ADV=SEQUENTIAL\0\ :\3ADV=WILLNEED\0\ :\4ADV=DONTNEED\0\ :\5ADV=NOREUSE\0\ b\20FIXED\0\ b\21OVERLAY\0\ b\22NOMERGE\0\ b\23COPYONW\0\ b\24AMAPPAD\0\ b\25TRYLOCK\0\ b\26NOWAIT\0\ b\27WAITVA\0\ b\30VAONLY\0\ b\31COLORMATCH\0\ b\32UNMAP\0\ " /* macros to extract info */ #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) /* magic offset value: offset not known(obj) or don't care(!obj) */ #define UVM_UNKNOWN_OFFSET ((voff_t) -1) /* * the following defines are for uvm_km_alloc/free's flags */ #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ #define UVM_KMF_EXEC 0x20 /* need executable mapping */ #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ #define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */ /* * the following defines the strategies for uvm_pagealloc_strat() */ #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ #define UVM_PGA_STRAT_NUMA 3 /* strongly prefer ideal bucket */ /* * flags for uvm_pagealloc_strat() */ #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ /* * flags for ubc_uiomove() */ #define UBC_READ 0x001 /* reading from object */ #define UBC_WRITE 0x002 /* writing to object */ #define UBC_FAULTBUSY 0x004 /* nobody else is using these pages, so busy * them at alloc and unbusy at release (e.g., * for writes extending a file) */ #define UBC_ISMAPPED 0x008 /* object may be mapped by a process */ /* * flags for ubc_release() */ #define UBC_UNMAP 0x010 /* unmap pages now -- don't leave the * mappings cached indefinitely */ /* * flags for ubc_uiomove() */ #define UBC_PARTIALOK 0x100 /* return early on error; otherwise, zero all * remaining bytes after error */ /* * flags for uvn_findpages(). */ #define UFP_ALL 0x00 #define UFP_NOWAIT 0x01 #define UFP_NOALLOC 0x02 #define UFP_NOCACHE 0x04 #define UFP_NORDONLY 0x08 #define UFP_DIRTYONLY 0x10 #define UFP_BACKWARD 0x20 #define UFP_NOBUSY 0x40 /* * lockflags that control the locking behavior of various functions. */ #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ /* * Default number of pages to allocate on the stack */ #define UBC_MAX_PAGES 8 /* * Value representing inactive emap. */ #define UVM_EMAP_INACTIVE (0) /* * structures */ struct buf; struct core; struct loadavg; struct mount; struct pglist; struct proc; struct uio; struct uvm_object; struct vm_anon; struct vmspace; struct pmap; struct vnode; struct vm_map_entry; struct vm_map; struct vm_page; struct vmtotal; /* * uvm_pctparam: parameter to be shown as percentage to user. */ #define UVM_PCTPARAM_SHIFT 8 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) #define UVM_PCTPARAM_APPLY(pct, x) \ (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) struct uvm_pctparam { int pct_pct; /* percent [0, 100] */ /* should be the first member */ int pct_scaled; int (*pct_check)(struct uvm_pctparam *, int); }; /* * uvmexp: global data structures that are exported to parts of the kernel * other than the vm system. */ 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; /* number of pages we manage */ int free; /* number of free pages */ int paging; /* number of pages in the process of being paged out */ int wired; /* number of wired pages */ /* * Adding anything before this line will break binary compatibility * with top(1) on NetBSD 1.5. */ int ncolors; /* number of page color buckets: must be p-o-2 */ int colormask; /* color bucket mask */ int zeropages; /* number of zero'd pages */ int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ int reserve_kernel; /* number of pages reserved for kernel */ unsigned anonpages; /* number of pages used by anon mappings */ unsigned filepages; /* number of pages used by cached file data */ unsigned execpages; /* number of pages used by cached exec data */ /* pageout params */ int freemin; /* min number of free pages */ int freetarg; /* target number of free pages */ int wiredmax; /* max number of wired pages */ /* swap */ int nswapdev; /* number of configured swap devices in system */ int swpages; /* number of PAGE_SIZE'ed swap pages */ int swpgavail; /* number of swap pages currently available */ int swpginuse; /* number of swap pages in use */ int swpgonly; /* number of swap pages in use, not also in RAM */ int nswget; /* number of times fault calls uvm_swap_get() */ /* stat counters. XXX: should be 64-bit 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 _unused1; int _unused2; 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 zeroaborts; /* number of times page zeroing was aborted */ int colorhit; /* pagealloc where we got optimal color */ int colormiss; /* pagealloc where we didn't */ int cpuhit; /* pagealloc where we allocated locally */ int cpumiss; /* pagealloc where we didn't */ /* fault subcounters. XXX: should be 64-bit counters */ int fltnoram; /* number of times fault was out of ram */ int fltnoanon; /* number of times fault was out of anons */ 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. XXX: should be 64-bit counters */ int pdwoke; /* number of times daemon woke up */ int pdrevs; /* number of times daemon rev'd clock hand */ int _unused3; 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 pdreanon; /* anon pages reactivated due to thresholds */ int pdrefile; /* file pages reactivated due to thresholds */ int pdreexec; /* executable pages reactivated due to thresholds */ int bootpages; /* number of pages stolen at boot */ }; /* * The following structure is 64-bit alignment safe. New elements * should only be added to the end of this structure so binary * compatibility can be preserved. */ struct uvmexp_sysctl { int64_t pagesize; int64_t pagemask; int64_t pageshift; int64_t npages; int64_t free; int64_t active; int64_t inactive; int64_t paging; int64_t wired; int64_t zeropages; int64_t reserve_pagedaemon; int64_t reserve_kernel; int64_t freemin; int64_t freetarg; int64_t inactarg; /* unused */ int64_t wiredmax; int64_t nswapdev; int64_t swpages; int64_t swpginuse; int64_t swpgonly; int64_t nswget; int64_t unused1; /* unused; was nanon */ int64_t cpuhit; int64_t cpumiss; int64_t faults; int64_t traps; int64_t intrs; int64_t swtch; int64_t softs; int64_t syscalls; int64_t pageins; int64_t swapins; /* unused */ int64_t swapouts; /* unused */ int64_t pgswapin; /* unused */ int64_t pgswapout; int64_t forks; int64_t forks_ppwait; int64_t forks_sharevm; int64_t pga_zerohit; int64_t pga_zeromiss; int64_t zeroaborts; int64_t fltnoram; int64_t fltnoanon; int64_t fltpgwait; int64_t fltpgrele; int64_t fltrelck; int64_t fltrelckok; int64_t fltanget; int64_t fltanretry; int64_t fltamcopy; int64_t fltnamap; int64_t fltnomap; int64_t fltlget; int64_t fltget; int64_t flt_anon; int64_t flt_acow; int64_t flt_obj; int64_t flt_prcopy; int64_t flt_przero; int64_t pdwoke; int64_t pdrevs; int64_t unused4; int64_t pdfreed; int64_t pdscans; int64_t pdanscan; int64_t pdobscan; int64_t pdreact; int64_t pdbusy; int64_t pdpageouts; int64_t pdpending; int64_t pddeact; int64_t anonpages; int64_t filepages; int64_t execpages; int64_t colorhit; int64_t colormiss; int64_t ncolors; int64_t bootpages; int64_t poolpages; int64_t countsyncone; int64_t countsyncall; int64_t anonunknown; int64_t anonclean; int64_t anondirty; int64_t fileunknown; int64_t fileclean; int64_t filedirty; int64_t fltup; int64_t fltnoup; }; #ifdef _KERNEL /* we need this before including uvm_page.h on some platforms */ extern struct uvmexp uvmexp; #endif /* * Finally, bring in standard UVM headers. */ #include #include #include #ifdef _KERNEL #include #endif #include #include #include #if defined(_KERNEL) || defined(_KMEMUSER) #include #include #endif #ifdef _KERNEL /* * Include the uvm_hotplug(9) API unconditionally until * uvm_page_physload() et. al. are obsoleted * * After this, MD code will have to explicitly include it if needed. */ #include #endif /* * helpers for calling ubc_release() */ #ifdef PMAP_CACHE_VIVT #define UBC_VNODE_FLAGS(vp) \ ((((vp)->v_iflag & VI_TEXT) != 0 ? UBC_UNMAP : 0) | \ (((vp)->v_vflag & VV_MAPPED) != 0 ? UBC_ISMAPPED : 0)) #else #define UBC_VNODE_FLAGS(vp) \ (((vp)->v_vflag & VV_MAPPED) != 0 ? UBC_ISMAPPED : 0) #endif #if defined(_KERNEL) || defined(_KMEMUSER) /* * Shareable process virtual address space. * May eventually be merged with vm_map. * Several fields are temporary (text, data stuff). */ struct vmspace { struct vm_map vm_map; /* VM address map */ volatile int vm_refcnt; /* number of references */ void * vm_shm; /* SYS5 shared memory private data XXX */ /* we copy from vm_startcopy to the end of the structure on fork */ #define vm_startcopy vm_rssize segsz_t vm_rssize; /* current resident set size in pages */ segsz_t vm_rssmax; /* max resident size in pages */ segsz_t vm_tsize; /* text size (pages) XXX */ segsz_t vm_dsize; /* data size (pages) XXX */ segsz_t vm_ssize; /* stack size (pages) */ segsz_t vm_issize; /* initial unmapped stack size (pages) */ void * vm_taddr; /* user virtual address of text XXX */ void * vm_daddr; /* user virtual address of data XXX */ void *vm_maxsaddr; /* user VA at max stack growth */ void *vm_minsaddr; /* user VA at top of stack */ size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ }; #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) #endif #ifdef _KERNEL /* * used to keep state while iterating over the map for a core dump. */ struct uvm_coredump_state { void *cookie; /* opaque for the caller */ vaddr_t start; /* start of region */ vaddr_t realend; /* real end of region */ vaddr_t end; /* virtual end of region */ vm_prot_t prot; /* protection of region */ int flags; /* flags; see below */ }; #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ /* * the various kernel maps, owned by MD code */ extern struct vm_map *kernel_map; extern struct vm_map *phys_map; /* * uvm_voaddr: * * This structure encapsulates UVM's unique virtual object address * for an individual byte inside a pageable page. Pageable pages can * be owned by either a uvm_object or a vm_anon. * * In each case, the byte offset into the owning object * (uvm_object or vm_anon) is included in the ID, so that * two different offsets into the same page have distinct * IDs. * * Note that the page does not necessarily have to be resident * in order to know the virtual object address. However, it * is required that any pending copy-on-write is resolved. * * When someone wants a virtual object address, an extra reference * is taken on the owner while the caller uses the ID. This * ensures that the identity is stable for the duration of its * use. */ struct uvm_voaddr { uintptr_t object; voff_t offset; }; /* * macros */ #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) /* vm_machdep.c */ int vmapbuf(struct buf *, vsize_t); void vunmapbuf(struct buf *, vsize_t); void ktext_write(void *, const void *, size_t); /* uvm_aobj.c */ struct uvm_object *uao_create(voff_t, int); void uao_set_pgfl(struct uvm_object *, int); void uao_detach(struct uvm_object *); void uao_reference(struct uvm_object *); /* uvm_bio.c */ void ubc_init(void); void ubchist_init(void); int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, int, int); void ubc_zerorange(struct uvm_object *, off_t, size_t, int); void ubc_purge(struct uvm_object *); /* uvm_fault.c */ #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); /* handle a page fault */ /* uvm_glue.c */ #if defined(KGDB) void uvm_chgkprot(void *, size_t, int); #endif void uvm_proc_fork(struct proc *, struct proc *, bool); void uvm_lwp_fork(struct lwp *, struct lwp *, void *, size_t, void (*)(void *), void *); int uvm_coredump_walkmap(struct proc *, int (*)(struct uvm_coredump_state *), void *); int uvm_coredump_count_segs(struct proc *); void uvm_proc_exit(struct proc *); void uvm_lwp_exit(struct lwp *); void uvm_idle(void); void uvm_init_limits(struct proc *); bool uvm_kernacc(void *, size_t, vm_prot_t); __dead void uvm_scheduler(void); vaddr_t uvm_uarea_alloc(void); void uvm_uarea_free(vaddr_t); vaddr_t uvm_uarea_system_alloc(struct cpu_info *); void uvm_uarea_system_free(vaddr_t); vaddr_t uvm_lwp_getuarea(lwp_t *); void uvm_lwp_setuarea(lwp_t *, vaddr_t); int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); void uvm_vsunlock(struct vmspace *, void *, size_t); void uvm_cpu_attach(struct cpu_info *); /* uvm_init.c */ void uvm_md_init(void); void uvm_init(void); /* uvm_io.c */ int uvm_io(struct vm_map *, struct uio *, int); /* uvm_km.c */ vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, uvm_flag_t); int uvm_km_protect(struct vm_map *, vaddr_t, vsize_t, vm_prot_t); void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, uvm_flag_t); struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, vaddr_t *, vsize_t, int, bool, struct vm_map *); int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, vmem_addr_t *); void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t); bool uvm_km_va_starved_p(void); /* uvm_map.c */ int uvm_map(struct vm_map *, vaddr_t *, vsize_t, struct uvm_object *, voff_t, vsize_t, uvm_flag_t); int uvm_map_pageable(struct vm_map *, vaddr_t, vaddr_t, bool, int); int uvm_map_pageable_all(struct vm_map *, int, vsize_t); bool uvm_map_checkprot(struct vm_map *, vaddr_t, vaddr_t, vm_prot_t); int uvm_map_protect(struct vm_map *, vaddr_t, vaddr_t, vm_prot_t, bool); int uvm_map_protect_user(struct lwp *, vaddr_t, vaddr_t, vm_prot_t); struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool); void uvmspace_init(struct vmspace *, struct pmap *, vaddr_t, vaddr_t, bool); void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool); void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool); struct vmspace *uvmspace_fork(struct vmspace *); void uvmspace_addref(struct vmspace *); void uvmspace_free(struct vmspace *); void uvmspace_share(struct proc *, struct proc *); void uvmspace_unshare(struct lwp *); bool uvm_voaddr_acquire(struct vm_map *, vaddr_t, struct uvm_voaddr *); void uvm_voaddr_release(struct uvm_voaddr *); int uvm_voaddr_compare(const struct uvm_voaddr *, const struct uvm_voaddr *); void uvm_whatis(uintptr_t, void (*)(const char *, ...)); /* uvm_meter.c */ int uvm_sysctl(int *, u_int, void *, size_t *, void *, size_t, struct proc *); int uvm_pctparam_check(struct uvm_pctparam *, int); void uvm_pctparam_set(struct uvm_pctparam *, int); int uvm_pctparam_get(struct uvm_pctparam *); void uvm_pctparam_init(struct uvm_pctparam *, int, int (*)(struct uvm_pctparam *, int)); int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, const char *, const char *); void uvm_update_uvmexp(void); /* uvm_mmap.c */ int uvm_mmap_dev(struct proc *, void **, size_t, dev_t, off_t); int uvm_mmap_anon(struct proc *, void **, size_t); vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t, int); /* uvm_mremap.c */ int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, struct vm_map *, vaddr_t *, vsize_t, struct proc *, int); /* uvm_object.c */ void uvm_obj_init(struct uvm_object *, const struct uvm_pagerops *, bool, u_int); void uvm_obj_setlock(struct uvm_object *, krwlock_t *); void uvm_obj_destroy(struct uvm_object *, bool); int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, struct pglist *); void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); bool uvm_obj_clean_p(struct uvm_object *); bool uvm_obj_nowriteback_p(struct uvm_object *); bool uvm_obj_page_dirty_p(struct vm_page *); void uvm_obj_page_set_dirty(struct vm_page *); void uvm_obj_page_clear_dirty(struct vm_page *); bool uvm_obj_page_writeback_p(struct vm_page *); void uvm_obj_page_set_writeback(struct vm_page *); void uvm_obj_page_clear_writeback(struct vm_page *); /* uvm_page.c */ int uvm_availmem(bool); void uvm_page_numa_load(paddr_t, paddr_t, u_int); struct vm_page *uvm_pagealloc_strat(struct uvm_object *, voff_t, struct vm_anon *, int, int, int); #define uvm_pagealloc(obj, off, anon, flags) \ uvm_pagealloc_strat((obj), (off), (anon), (flags), \ UVM_PGA_STRAT_NORMAL, 0) void uvm_pagereplace(struct vm_page *, struct vm_page *); int uvm_pagerealloc(struct vm_page *, struct uvm_object *, voff_t); void uvm_setpagesize(void); /* uvm_pager.c */ void uvm_aio_aiodone(struct buf *); void uvm_aio_aiodone_pages(struct vm_page **, int, bool, int); /* uvm_pdaemon.c */ void uvm_pageout(void *); struct work; void uvm_aiodone_worker(struct work *, void *); void uvm_pageout_start(int); void uvm_pageout_done(int); void uvm_estimatepageable(int *, int *); /* uvm_pglist.c */ int uvm_pglistalloc(psize_t, paddr_t, paddr_t, paddr_t, paddr_t, struct pglist *, int, int); void uvm_pglistfree(struct pglist *); /* uvm_swap.c */ void uvm_swap_init(void); /* uvm_unix.c */ int uvm_grow(struct proc *, vaddr_t); /* uvm_user.c */ void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); /* uvm_vnode.c */ struct uvm_page_array; void uvm_vnp_setsize(struct vnode *, voff_t); void uvm_vnp_setwritesize(struct vnode *, voff_t); int uvn_findpages(struct uvm_object *, voff_t, unsigned int *, struct vm_page **, struct uvm_page_array *, unsigned int); bool uvn_text_p(struct uvm_object *); bool uvn_needs_writefault_p(struct uvm_object *); /* kern_malloc.c */ void kmeminit_nkmempages(void); extern int nkmempages; #endif /* _KERNEL */ #endif /* _UVM_UVM_EXTERN_H_ */