uvm.h revision 1.4
1 /* $NetBSD: uvm.h,v 1.4 1998/02/10 02:34:17 perry Exp $ */ 2 3 /* 4 * XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE! 5 * >>>USE AT YOUR OWN RISK, WORK IS NOT FINISHED<<< 6 */ 7 8 /* 9 * 10 * Copyright (c) 1997 Charles D. Cranor and Washington University. 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by Charles D. Cranor and 24 * Washington University. 25 * 4. The name of the author may not be used to endorse or promote products 26 * derived from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 30 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 31 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 33 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 37 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 38 * 39 * from: Id: uvm.h,v 1.1.2.14 1998/02/02 20:07:19 chuck Exp 40 */ 41 42 #ifndef _UVM_UVM_H_ 43 #define _UVM_UVM_H_ 44 45 #include <uvm/uvm_extern.h> 46 47 #include <uvm/uvm_stat.h> 48 49 /* 50 * pull in prototypes 51 */ 52 53 #include <uvm/uvm_amap.h> 54 #include <uvm/uvm_aobj.h> 55 #include <uvm/uvm_fault.h> 56 #include <uvm/uvm_glue.h> 57 #include <uvm/uvm_km.h> 58 #include <uvm/uvm_loan.h> 59 #include <uvm/uvm_map.h> 60 #include <uvm/uvm_object.h> 61 #include <uvm/uvm_page.h> 62 #include <uvm/uvm_pager.h> 63 #include <uvm/uvm_pdaemon.h> 64 #include <uvm/uvm_swap.h> 65 66 /* 67 * uvm structure (vm global state: collected in one structure for ease 68 * of reference...) 69 */ 70 71 struct uvm { 72 /* vm_page related parameters */ 73 /* vm_page queues */ 74 struct pglist page_free; /* unallocated pages */ 75 struct pglist page_active; /* allocated pages, in use */ 76 struct pglist page_inactive_swp;/* pages inactive (reclaim or free) */ 77 struct pglist page_inactive_obj;/* pages inactive (reclaim or free) */ 78 #if NCPU > 1 79 simple_lock_data_t pageqlock; /* lock for active/inactive page q */ 80 simple_lock_data_t fpageqlock; /* lock for free page q */ 81 #endif /* NCPU > 1 */ 82 /* page daemon trigger */ 83 int pagedaemon; /* daemon sleeps on this */ 84 struct proc *pagedaemon_proc; /* daemon's pid */ 85 simple_lock_data_t pagedaemon_lock; 86 /* page hash */ 87 struct pglist *page_hash; /* page hash table (vp/off->page) */ 88 int page_nhash; /* number of buckets */ 89 int page_hashmask; /* hash mask */ 90 #if NCPU > 1 91 simple_lock_data_t hashlock; /* lock on page_hash array */ 92 #endif 93 /* anon stuff */ 94 struct vm_anon *afree; /* anon free list */ 95 #if NCPU > 1 96 simple_lock_data_t afreelock; /* lock on anon free list */ 97 #endif /* NCPU > 1 */ 98 99 /* static kernel map entry pool */ 100 vm_map_entry_t kentry_free; /* free page pool */ 101 #if NCPU > 1 102 simple_lock_data_t kentry_lock; 103 #endif 104 105 /* aio_done is locked by uvm.pagedaemon_lock and splbio! */ 106 struct uvm_aiohead aio_done; /* done async i/o reqs */ 107 108 /* pager VM area bounds */ 109 vm_offset_t pager_sva; /* start of pager VA area */ 110 vm_offset_t pager_eva; /* end of pager VA area */ 111 112 /* kernel object: to support anonymous pageable kernel memory */ 113 struct uvm_object *kernel_object; 114 }; 115 116 extern struct uvm uvm; 117 118 /* 119 * vm_map_entry etype bits: 120 */ 121 122 #define UVM_ET_OBJ 0x01 /* it is a uvm_object */ 123 #define UVM_ET_MAP 0x02 /* it is a vm_map */ 124 #define UVM_ET_SUBMAP 0x04 /* it is a submap (MAP must be 1 too) */ 125 #define UVM_ET_COPYONWRITE 0x08 /* copy_on_write */ 126 #define UVM_ET_NEEDSCOPY 0x10 /* needs_copy */ 127 128 #define UVM_ET_ISOBJ(E) (((E)->etype & UVM_ET_OBJ) != 0) 129 #define UVM_ET_ISMAP(E) (((E)->etype & UVM_ET_MAP) != 0) 130 #define UVM_ET_ISSUBMAP(E) (((E)->etype & UVM_ET_SUBMAP) != 0) 131 #define UVM_ET_ISCOPYONWRITE(E) (((E)->etype & UVM_ET_COPYONWRITE) != 0) 132 #define UVM_ET_ISNEEDSCOPY(E) (((E)->etype & UVM_ET_NEEDSCOPY) != 0) 133 134 /* 135 * macros 136 */ 137 138 /* 139 * UVM_UNLOCK_AND_WAIT: atomic unlock+wait... front end for the 140 * (poorly named) thread_sleep_msg function. 141 */ 142 143 #if NCPU > 1 144 145 #define UVM_UNLOCK_AND_WAIT(event,lock,intr,msg, timo) \ 146 thread_sleep_msg(event,lock,intr,msg, timo) 147 148 #else 149 150 #define UVM_UNLOCK_AND_WAIT(event,lock,intr,msg, timo) \ 151 thread_sleep_msg(event,NULL,intr,msg, timo) 152 153 #endif 154 155 /* 156 * UVM_PAGE_OWN: track page ownership (only if UVM_PAGE_TRKOWN) 157 */ 158 159 #if defined(UVM_PAGE_TRKOWN) 160 161 #define UVM_PAGE_OWN(PG, TAG) uvm_page_own(PG, TAG) 162 163 #else /* UVM_PAGE_TRKOWN */ 164 165 #define UVM_PAGE_OWN(PG, TAG) /* nothing */ 166 167 #endif /* UVM_PAGE_TRKOWN */ 168 169 /* 170 * pull in inlines 171 */ 172 173 #include <uvm/uvm_amap_i.h> 174 #include <uvm/uvm_fault_i.h> 175 #include <uvm/uvm_map_i.h> 176 #include <uvm/uvm_page_i.h> 177 #include <uvm/uvm_pager_i.h> 178 179 #endif /* _UVM_UVM_H_ */ 180
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