| vm_page.h (235372) | vm_page.h (237168) |
|---|---|
| 1/*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 43 unchanged lines hidden (view full) --- 52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 53 * School of Computer Science 54 * Carnegie Mellon University 55 * Pittsburgh PA 15213-3890 56 * 57 * any improvements or extensions that they make and grant Carnegie the 58 * rights to redistribute these changes. 59 * | 1/*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 43 unchanged lines hidden (view full) --- 52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 53 * School of Computer Science 54 * Carnegie Mellon University 55 * Pittsburgh PA 15213-3890 56 * 57 * any improvements or extensions that they make and grant Carnegie the 58 * rights to redistribute these changes. 59 * |
| 60 * $FreeBSD: head/sys/vm/vm_page.h 235372 2012-05-12 20:42:56Z kib $ | 60 * $FreeBSD: head/sys/vm/vm_page.h 237168 2012-06-16 18:56:19Z alc $ |
| 61 */ 62 63/* 64 * Resident memory system definitions. 65 */ 66 67#ifndef _VM_PAGE_ 68#define _VM_PAGE_ --- 163 unchanged lines hidden (view full) --- 232#define vm_page_lockptr(m) (PA_LOCKPTR(VM_PAGE_TO_PHYS((m)))) 233#define vm_page_lock(m) mtx_lock(vm_page_lockptr((m))) 234#define vm_page_unlock(m) mtx_unlock(vm_page_lockptr((m))) 235#define vm_page_trylock(m) mtx_trylock(vm_page_lockptr((m))) 236#define vm_page_lock_assert(m, a) mtx_assert(vm_page_lockptr((m)), (a)) 237#endif 238 239#define vm_page_queue_free_mtx vm_page_queue_free_lock.data | 61 */ 62 63/* 64 * Resident memory system definitions. 65 */ 66 67#ifndef _VM_PAGE_ 68#define _VM_PAGE_ --- 163 unchanged lines hidden (view full) --- 232#define vm_page_lockptr(m) (PA_LOCKPTR(VM_PAGE_TO_PHYS((m)))) 233#define vm_page_lock(m) mtx_lock(vm_page_lockptr((m))) 234#define vm_page_unlock(m) mtx_unlock(vm_page_lockptr((m))) 235#define vm_page_trylock(m) mtx_trylock(vm_page_lockptr((m))) 236#define vm_page_lock_assert(m, a) mtx_assert(vm_page_lockptr((m)), (a)) 237#endif 238 239#define vm_page_queue_free_mtx vm_page_queue_free_lock.data |
| 240 |
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| 240/* 241 * These are the flags defined for vm_page. 242 * | 241/* 242 * These are the flags defined for vm_page. 243 * |
| 243 * aflags are updated by atomic accesses. Use the vm_page_aflag_set() | 244 * aflags are updated by atomic accesses. Use the vm_page_aflag_set() |
| 244 * and vm_page_aflag_clear() functions to set and clear the flags. 245 * 246 * PGA_REFERENCED may be cleared only if the object containing the page is | 245 * and vm_page_aflag_clear() functions to set and clear the flags. 246 * 247 * PGA_REFERENCED may be cleared only if the object containing the page is |
| 247 * locked. | 248 * locked. It is set by both the MI and MD VM layers. |
| 248 * 249 * PGA_WRITEABLE is set exclusively on managed pages by pmap_enter(). When it | 249 * 250 * PGA_WRITEABLE is set exclusively on managed pages by pmap_enter(). When it |
| 250 * does so, the page must be VPO_BUSY. | 251 * does so, the page must be VPO_BUSY. The MI VM layer must never access this 252 * flag directly. Instead, it should call pmap_page_is_write_mapped(). |
| 251 * 252 * PGA_EXECUTABLE may be set by pmap routines, and indicates that a page has | 253 * 254 * PGA_EXECUTABLE may be set by pmap routines, and indicates that a page has |
| 253 * at least one executable mapping. It is not consumed by the VM layer. | 255 * at least one executable mapping. It is not consumed by the MI VM layer. |
| 254 */ 255#define PGA_WRITEABLE 0x01 /* page may be mapped writeable */ 256#define PGA_REFERENCED 0x02 /* page has been referenced */ 257#define PGA_EXECUTABLE 0x04 /* page may be mapped executable */ 258 259/* 260 * Page flags. If changed at any other time than page allocation or 261 * freeing, the modification must be protected by the vm_page lock. 262 */ 263#define PG_CACHED 0x01 /* page is cached */ 264#define PG_FREE 0x02 /* page is free */ | 256 */ 257#define PGA_WRITEABLE 0x01 /* page may be mapped writeable */ 258#define PGA_REFERENCED 0x02 /* page has been referenced */ 259#define PGA_EXECUTABLE 0x04 /* page may be mapped executable */ 260 261/* 262 * Page flags. If changed at any other time than page allocation or 263 * freeing, the modification must be protected by the vm_page lock. 264 */ 265#define PG_CACHED 0x01 /* page is cached */ 266#define PG_FREE 0x02 /* page is free */ |
| 265#define PG_FICTITIOUS 0x04 /* physical page doesn't exist (O) */ | 267#define PG_FICTITIOUS 0x04 /* physical page doesn't exist */ |
| 266#define PG_ZERO 0x08 /* page is zeroed */ 267#define PG_MARKER 0x10 /* special queue marker page */ 268#define PG_SLAB 0x20 /* object pointer is actually a slab */ 269#define PG_WINATCFLS 0x40 /* flush dirty page on inactive q */ | 268#define PG_ZERO 0x08 /* page is zeroed */ 269#define PG_MARKER 0x10 /* special queue marker page */ 270#define PG_SLAB 0x20 /* object pointer is actually a slab */ 271#define PG_WINATCFLS 0x40 /* flush dirty page on inactive q */ |
| 270#define PG_NODUMP 0x80 /* don't include this page in the dump */ | 272#define PG_NODUMP 0x80 /* don't include this page in a dump */ |
| 271 272/* 273 * Misc constants. 274 */ 275#define ACT_DECLINE 1 276#define ACT_ADVANCE 3 277#define ACT_INIT 5 278#define ACT_MAX 64 --- 186 unchanged lines hidden --- | 273 274/* 275 * Misc constants. 276 */ 277#define ACT_DECLINE 1 278#define ACT_ADVANCE 3 279#define ACT_INIT 5 280#define ACT_MAX 64 --- 186 unchanged lines hidden --- |