ia64/linux-2.6.18-xen.hg

view arch/cris/mm/init.c @ 647:a5bb490065f6

Fix the build after public header sync.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Aug 13 14:01:49 2008 +0100 (2008-08-13)
parents 831230e53067
children
line source
1 /*
2 * linux/arch/cris/mm/init.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 * Copyright (C) 2000,2001 Axis Communications AB
6 *
7 * Authors: Bjorn Wesen (bjornw@axis.com)
8 *
9 * $Log: init.c,v $
10 * Revision 1.11 2004/05/28 09:28:56 starvik
11 * Calculation of loops_per_usec moved because initalization order has changed
12 * in Linux 2.6.
13 *
14 * Revision 1.10 2004/05/14 07:58:05 starvik
15 * Merge of changes from 2.4
16 *
17 * Revision 1.9 2003/07/04 08:27:54 starvik
18 * Merge of Linux 2.5.74
19 *
20 * Revision 1.8 2003/04/09 05:20:48 starvik
21 * Merge of Linux 2.5.67
22 *
23 * Revision 1.7 2003/01/22 06:48:38 starvik
24 * Fixed warnings issued by GCC 3.2.1
25 *
26 * Revision 1.6 2002/12/11 14:44:48 starvik
27 * Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/mm
28 *
29 * Revision 1.5 2002/11/18 07:37:37 starvik
30 * Added cache bug workaround (from Linux 2.4)
31 *
32 * Revision 1.4 2002/11/13 15:40:24 starvik
33 * Removed the page table cache stuff (as done in other archs)
34 *
35 * Revision 1.3 2002/11/05 06:45:13 starvik
36 * Merge of Linux 2.5.45
37 *
38 * Revision 1.2 2001/12/18 13:35:22 bjornw
39 * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
40 *
41 * Revision 1.31 2001/11/13 16:22:00 bjornw
42 * Skip calculating totalram and sharedram in si_meminfo
43 *
44 * Revision 1.30 2001/11/12 19:02:10 pkj
45 * Fixed compiler warnings.
46 *
47 * Revision 1.29 2001/07/25 16:09:50 bjornw
48 * val->sharedram will stay 0
49 *
50 * Revision 1.28 2001/06/28 16:30:17 bjornw
51 * Oops. This needs to wait until 2.4.6 is merged
52 *
53 * Revision 1.27 2001/06/28 14:04:07 bjornw
54 * Fill in sharedram
55 *
56 * Revision 1.26 2001/06/18 06:36:02 hp
57 * Enable free_initmem of __init-type pages
58 *
59 * Revision 1.25 2001/06/13 00:02:23 bjornw
60 * Use a separate variable to store the current pgd to avoid races in schedule
61 *
62 * Revision 1.24 2001/05/15 00:52:20 hp
63 * Only map segment 0xa as seg if CONFIG_JULIETTE
64 *
65 * Revision 1.23 2001/04/04 14:35:40 bjornw
66 * * Removed get_pte_slow and friends (2.4.3 change)
67 * * Removed bad_pmd handling (2.4.3 change)
68 *
69 * Revision 1.22 2001/04/04 13:38:04 matsfg
70 * Moved ioremap to a separate function instead
71 *
72 * Revision 1.21 2001/03/27 09:28:33 bjornw
73 * ioremap used too early - lets try it in mem_init instead
74 *
75 * Revision 1.20 2001/03/23 07:39:21 starvik
76 * Corrected according to review remarks
77 *
78 * Revision 1.19 2001/03/15 14:25:17 bjornw
79 * More general shadow registers and ioremaped addresses for external I/O
80 *
81 * Revision 1.18 2001/02/23 12:46:44 bjornw
82 * * 0xc was not CSE1; 0x8 is, same as uncached flash, so we move the uncached
83 * flash during CRIS_LOW_MAP from 0xe to 0x8 so both the flash and the I/O
84 * is mapped straight over (for !CRIS_LOW_MAP the uncached flash is still 0xe)
85 *
86 * Revision 1.17 2001/02/22 15:05:21 bjornw
87 * Map 0x9 straight over during LOW_MAP to allow for memory mapped LEDs
88 *
89 * Revision 1.16 2001/02/22 15:02:35 bjornw
90 * Map 0xc straight over during LOW_MAP to allow for memory mapped I/O
91 *
92 * Revision 1.15 2001/01/10 21:12:10 bjornw
93 * loops_per_sec -> loops_per_jiffy
94 *
95 * Revision 1.14 2000/11/22 16:23:20 bjornw
96 * Initialize totalhigh counters to 0 to make /proc/meminfo look nice.
97 *
98 * Revision 1.13 2000/11/21 16:37:51 bjornw
99 * Temporarily disable initmem freeing
100 *
101 * Revision 1.12 2000/11/21 13:55:07 bjornw
102 * Use CONFIG_CRIS_LOW_MAP for the low VM map instead of explicit CPU type
103 *
104 * Revision 1.11 2000/10/06 12:38:22 bjornw
105 * Cast empty_bad_page correctly (should really be of * type from the start..
106 *
107 * Revision 1.10 2000/10/04 16:53:57 bjornw
108 * Fix memory-map due to LX features
109 *
110 * Revision 1.9 2000/09/13 15:47:49 bjornw
111 * Wrong count in reserved-pages loop
112 *
113 * Revision 1.8 2000/09/13 14:35:10 bjornw
114 * 2.4.0-test8 added a new arg to free_area_init_node
115 *
116 * Revision 1.7 2000/08/17 15:35:55 bjornw
117 * 2.4.0-test6 removed MAP_NR and inserted virt_to_page
118 *
119 *
120 */
122 #include <linux/init.h>
123 #include <linux/bootmem.h>
124 #include <asm/tlb.h>
126 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
128 unsigned long empty_zero_page;
130 extern char _stext, _edata, _etext; /* From linkerscript */
131 extern char __init_begin, __init_end;
133 void
134 show_mem(void)
135 {
136 int i,free = 0,total = 0,cached = 0, reserved = 0, nonshared = 0;
137 int shared = 0;
139 printk("\nMem-info:\n");
140 show_free_areas();
141 printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
142 i = max_mapnr;
143 while (i-- > 0) {
144 total++;
145 if (PageReserved(mem_map+i))
146 reserved++;
147 else if (PageSwapCache(mem_map+i))
148 cached++;
149 else if (!page_count(mem_map+i))
150 free++;
151 else if (page_count(mem_map+i) == 1)
152 nonshared++;
153 else
154 shared += page_count(mem_map+i) - 1;
155 }
156 printk("%d pages of RAM\n",total);
157 printk("%d free pages\n",free);
158 printk("%d reserved pages\n",reserved);
159 printk("%d pages nonshared\n",nonshared);
160 printk("%d pages shared\n",shared);
161 printk("%d pages swap cached\n",cached);
162 }
164 void __init
165 mem_init(void)
166 {
167 int codesize, reservedpages, datasize, initsize;
168 unsigned long tmp;
170 if(!mem_map)
171 BUG();
173 /* max/min_low_pfn was set by setup.c
174 * now we just copy it to some other necessary places...
175 *
176 * high_memory was also set in setup.c
177 */
179 max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
181 /* this will put all memory onto the freelists */
182 totalram_pages = free_all_bootmem();
184 reservedpages = 0;
185 for (tmp = 0; tmp < max_mapnr; tmp++) {
186 /*
187 * Only count reserved RAM pages
188 */
189 if (PageReserved(mem_map + tmp))
190 reservedpages++;
191 }
193 codesize = (unsigned long) &_etext - (unsigned long) &_stext;
194 datasize = (unsigned long) &_edata - (unsigned long) &_etext;
195 initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
197 printk(KERN_INFO
198 "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, "
199 "%dk init)\n" ,
200 (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
201 max_mapnr << (PAGE_SHIFT-10),
202 codesize >> 10,
203 reservedpages << (PAGE_SHIFT-10),
204 datasize >> 10,
205 initsize >> 10
206 );
207 }
209 /* free the pages occupied by initialization code */
211 void
212 free_initmem(void)
213 {
214 unsigned long addr;
216 addr = (unsigned long)(&__init_begin);
217 for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
218 ClearPageReserved(virt_to_page(addr));
219 init_page_count(virt_to_page(addr));
220 free_page(addr);
221 totalram_pages++;
222 }
223 printk (KERN_INFO "Freeing unused kernel memory: %luk freed\n",
224 (unsigned long)((&__init_end - &__init_begin) >> 10));
225 }