| @@ -1,14 +1,14 @@ | | | @@ -1,14 +1,14 @@ |
| 1 | /* $NetBSD: uvm_page.h,v 1.98 2020/02/23 15:46:43 ad Exp $ */ | | 1 | /* $NetBSD: uvm_page.h,v 1.99 2020/03/06 02:46:17 riastradh Exp $ */ |
| 2 | | | 2 | |
| 3 | /* | | 3 | /* |
| 4 | * Copyright (c) 1997 Charles D. Cranor and Washington University. | | 4 | * Copyright (c) 1997 Charles D. Cranor and Washington University. |
| 5 | * Copyright (c) 1991, 1993, The Regents of the University of California. | | 5 | * Copyright (c) 1991, 1993, The Regents of the University of California. |
| 6 | * | | 6 | * |
| 7 | * All rights reserved. | | 7 | * All rights reserved. |
| 8 | * | | 8 | * |
| 9 | * This code is derived from software contributed to Berkeley by | | 9 | * This code is derived from software contributed to Berkeley by |
| 10 | * The Mach Operating System project at Carnegie-Mellon University. | | 10 | * The Mach Operating System project at Carnegie-Mellon University. |
| 11 | * | | 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without | | 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions | | 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: | | 14 | * are met: |
| @@ -54,26 +54,30 @@ | | | @@ -54,26 +54,30 @@ |
| 54 | * | | 54 | * |
| 55 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | | 55 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 56 | * School of Computer Science | | 56 | * School of Computer Science |
| 57 | * Carnegie Mellon University | | 57 | * Carnegie Mellon University |
| 58 | * Pittsburgh PA 15213-3890 | | 58 | * Pittsburgh PA 15213-3890 |
| 59 | * | | 59 | * |
| 60 | * any improvements or extensions that they make and grant Carnegie the | | 60 | * any improvements or extensions that they make and grant Carnegie the |
| 61 | * rights to redistribute these changes. | | 61 | * rights to redistribute these changes. |
| 62 | */ | | 62 | */ |
| 63 | | | 63 | |
| 64 | #ifndef _UVM_UVM_PAGE_H_ | | 64 | #ifndef _UVM_UVM_PAGE_H_ |
| 65 | #define _UVM_UVM_PAGE_H_ | | 65 | #define _UVM_UVM_PAGE_H_ |
| 66 | | | 66 | |
| | | 67 | #ifdef _KERNEL_OPT |
| | | 68 | #include "opt_uvm_page_trkown.h" |
| | | 69 | #endif |
| | | 70 | |
| 67 | #include <uvm/uvm_extern.h> | | 71 | #include <uvm/uvm_extern.h> |
| 68 | #include <uvm/uvm_pglist.h> | | 72 | #include <uvm/uvm_pglist.h> |
| 69 | | | 73 | |
| 70 | /* | | 74 | /* |
| 71 | * Management of resident (logical) pages. | | 75 | * Management of resident (logical) pages. |
| 72 | * | | 76 | * |
| 73 | * Each resident page has a vm_page structure, indexed by page number. | | 77 | * Each resident page has a vm_page structure, indexed by page number. |
| 74 | * There are several lists in the structure: | | 78 | * There are several lists in the structure: |
| 75 | * | | 79 | * |
| 76 | * - A red-black tree rooted with the containing object is used to | | 80 | * - A red-black tree rooted with the containing object is used to |
| 77 | * quickly perform object+offset lookups. | | 81 | * quickly perform object+offset lookups. |
| 78 | * - A list of all pages for a given object, for a quick deactivation | | 82 | * - A list of all pages for a given object, for a quick deactivation |
| 79 | * at a time of deallocation. | | 83 | * at a time of deallocation. |