projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d7e09d03 PT |
1 | /* |
| 2 | * GPL HEADER START | |
| 3 | * | |
| 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 only, | |
| 8 | * as published by the Free Software Foundation. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, but | |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * General Public License version 2 for more details (a copy is included | |
| 14 | * in the LICENSE file that accompanied this code). | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * version 2 along with this program; If not, see | |
| 18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
| 19 | * | |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 22 | * have any questions. | |
| 23 | * | |
| 24 | * GPL HEADER END | |
| 25 | */ | |
| 26 | /* | |
| 27 | * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 28 | * Use is subject to license terms. | |
| 29 | * | |
| 30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
| 31 | */ | |
| 32 | /* | |
| 33 | * This file is part of Lustre, http://www.lustre.org/ | |
| 34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
| 35 | * | |
| 36 | * libcfs/include/libcfs/linux/linux-mem.h | |
| 37 | * | |
| 38 | * Basic library routines. | |
| 39 | */ | |
| 40 | ||
| 41 | #ifndef __LIBCFS_LINUX_CFS_MEM_H__ | |
| 42 | #define __LIBCFS_LINUX_CFS_MEM_H__ | |
| 43 | ||
| 44 | #ifndef __LIBCFS_LIBCFS_H__ | |
| 45 | #error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead | |
| 46 | #endif | |
| 47 | ||
| d7e09d03 PT |
48 | #include <linux/mm.h> |
| 49 | #include <linux/vmalloc.h> | |
| 50 | #include <linux/pagemap.h> | |
| 51 | #include <linux/slab.h> | |
| 52 | #include <linux/memcontrol.h> | |
| 53 | #include <linux/mm_inline.h> | |
| 54 | ||
| 5426ba66 LX |
55 | #ifndef HAVE_LIBCFS_CPT |
| 56 | /* Need this for cfs_cpt_table */ | |
| 86e5b63d | 57 | #include "../libcfs_cpu.h" |
| 5426ba66 LX |
58 | #endif |
| 59 | ||
| 09cbfeaf | 60 | #define CFS_PAGE_MASK (~((__u64)PAGE_SIZE-1)) |
| d7e09d03 PT |
61 | #define page_index(p) ((p)->index) |
| 62 | ||
| 63 | #define memory_pressure_get() (current->flags & PF_MEMALLOC) | |
| 64 | #define memory_pressure_set() do { current->flags |= PF_MEMALLOC; } while (0) | |
| 65 | #define memory_pressure_clr() do { current->flags &= ~PF_MEMALLOC; } while (0) | |
| 66 | ||
| 67 | #if BITS_PER_LONG == 32 | |
| 68 | /* limit to lowmem on 32-bit systems */ | |
| 69 | #define NUM_CACHEPAGES \ | |
| 09cbfeaf | 70 | min(totalram_pages, 1UL << (30 - PAGE_SHIFT) * 3 / 4) |
| d7e09d03 | 71 | #else |
| 4f6cc9ab | 72 | #define NUM_CACHEPAGES totalram_pages |
| d7e09d03 PT |
73 | #endif |
| 74 | ||
| d7e09d03 PT |
75 | #define DECL_MMSPACE mm_segment_t __oldfs |
| 76 | #define MMSPACE_OPEN \ | |
| a393fd54 | 77 | do { __oldfs = get_fs(); set_fs(get_ds()); } while (0) |
| d7e09d03 PT |
78 | #define MMSPACE_CLOSE set_fs(__oldfs) |
| 79 | ||
| d7e09d03 | 80 | #endif /* __LINUX_CFS_MEM_H__ */ |