uvm.h revision 1.57.2.1
1 /* $NetBSD: uvm.h,v 1.57.2.1 2010/04/30 14:44:37 uebayasi Exp $ */ 2 3 /* 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * 31 * Copyright (c) 1997 Charles D. Cranor and Washington University. 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by Charles D. Cranor and 45 * Washington University. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * from: Id: uvm.h,v 1.1.2.14 1998/02/02 20:07:19 chuck Exp 61 */ 62 63 #ifndef _UVM_UVM_H_ 64 #define _UVM_UVM_H_ 65 66 #if defined(_KERNEL_OPT) 67 #include "opt_lockdebug.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_uvmhist.h" 70 #endif 71 72 #include <uvm/uvm_extern.h> 73 74 #include <uvm/uvm_stat.h> 75 76 /* 77 * pull in prototypes 78 */ 79 80 #include <uvm/uvm_amap.h> 81 #include <uvm/uvm_aobj.h> 82 #include <uvm/uvm_fault.h> 83 #include <uvm/uvm_glue.h> 84 #include <uvm/uvm_km.h> 85 #include <uvm/uvm_loan.h> 86 #include <uvm/uvm_map.h> 87 #include <uvm/uvm_object.h> 88 #include <uvm/uvm_page.h> 89 #include <uvm/uvm_pager.h> 90 #include <uvm/uvm_pdaemon.h> 91 #include <uvm/uvm_swap.h> 92 93 #ifdef _KERNEL 94 95 /* 96 * pull in VM_NFREELIST 97 */ 98 #include <machine/vmparam.h> 99 100 struct workqueue; 101 102 /* 103 * per-cpu data 104 */ 105 106 struct uvm_cpu { 107 struct pgfreelist page_free[VM_NFREELIST]; /* unallocated pages */ 108 int page_free_nextcolor; /* next color to allocate from */ 109 int page_idlezero_next; /* which color to zero next */ 110 bool page_idle_zero; /* TRUE if we should try to zero 111 pages in the idle loop */ 112 int pages[PGFL_NQUEUES]; /* total of pages in page_free */ 113 u_int emap_gen; /* emap generation number */ 114 }; 115 116 /* 117 * uvm structure (vm global state: collected in one structure for ease 118 * of reference...) 119 */ 120 121 struct uvm { 122 /* vm_page related parameters */ 123 124 /* vm_page queues */ 125 struct pgfreelist page_free[VM_NFREELIST]; /* unallocated pages */ 126 bool page_init_done; /* TRUE if uvm_page_init() finished */ 127 128 /* page daemon trigger */ 129 int pagedaemon; /* daemon sleeps on this */ 130 struct lwp *pagedaemon_lwp; /* daemon's lid */ 131 132 /* aiodone daemon */ 133 struct workqueue *aiodone_queue; 134 135 /* aio_done is locked by uvm.pagedaemon_lock and splbio! */ 136 TAILQ_HEAD(, buf) aio_done; /* done async i/o reqs */ 137 138 /* per-cpu data */ 139 struct uvm_cpu *cpus[MAXCPUS]; 140 }; 141 142 /* 143 * kernel object: to support anonymous pageable kernel memory 144 */ 145 extern struct uvm_object *uvm_kernel_object; 146 147 /* 148 * locks (made globals for lockstat). 149 */ 150 151 extern kmutex_t uvm_pageqlock; /* lock for active/inactive page q */ 152 extern kmutex_t uvm_fpageqlock; /* lock for free page q */ 153 extern kmutex_t uvm_kentry_lock; 154 extern kmutex_t uvm_swap_data_lock; 155 156 #endif /* _KERNEL */ 157 158 /* 159 * vm_map_entry etype bits: 160 */ 161 162 #define UVM_ET_OBJ 0x01 /* it is a uvm_object */ 163 #define UVM_ET_SUBMAP 0x02 /* it is a vm_map submap */ 164 #define UVM_ET_COPYONWRITE 0x04 /* copy_on_write */ 165 #define UVM_ET_NEEDSCOPY 0x08 /* needs_copy */ 166 167 #define UVM_ET_ISOBJ(E) (((E)->etype & UVM_ET_OBJ) != 0) 168 #define UVM_ET_ISSUBMAP(E) (((E)->etype & UVM_ET_SUBMAP) != 0) 169 #define UVM_ET_ISCOPYONWRITE(E) (((E)->etype & UVM_ET_COPYONWRITE) != 0) 170 #define UVM_ET_ISNEEDSCOPY(E) (((E)->etype & UVM_ET_NEEDSCOPY) != 0) 171 172 #ifdef _KERNEL 173 174 /* 175 * holds all the internal UVM data 176 */ 177 extern struct uvm uvm; 178 179 /* 180 * historys 181 */ 182 183 #ifdef UVMHIST 184 UVMHIST_DECL(maphist); 185 UVMHIST_DECL(pdhist); 186 UVMHIST_DECL(ubchist); 187 UVMHIST_DECL(loanhist); 188 #endif 189 190 extern struct evcnt uvm_ra_total; 191 extern struct evcnt uvm_ra_hit; 192 extern struct evcnt uvm_ra_miss; 193 194 /* 195 * UVM_UNLOCK_AND_WAIT: atomic unlock+wait... wrapper around the 196 * interlocked tsleep() function. 197 */ 198 199 #define UVM_UNLOCK_AND_WAIT(event, slock, intr, msg, timo) \ 200 do { \ 201 (void) mtsleep(event, PVM | PNORELOCK | (intr ? PCATCH : 0), \ 202 msg, timo, slock); \ 203 } while (/*CONSTCOND*/ 0) 204 205 void uvm_kick_pdaemon(void); 206 207 /* 208 * UVM_PAGE_OWN: track page ownership (only if UVM_PAGE_TRKOWN) 209 */ 210 211 #if defined(UVM_PAGE_TRKOWN) 212 #define UVM_PAGE_OWN(PG, TAG) uvm_page_own(PG, TAG) 213 #else 214 #define UVM_PAGE_OWN(PG, TAG) /* nothing */ 215 #endif /* UVM_PAGE_TRKOWN */ 216 217 #include <uvm/uvm_fault_i.h> 218 219 #endif /* _KERNEL */ 220 221 #endif /* _UVM_UVM_H_ */ 222
Indexes created Wed Oct 22 13:09:56 GMT 2025