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e1759c21 AD |
1 | #include <linux/fs.h> |
2 | #include <linux/hugetlb.h> | |
3 | #include <linux/init.h> | |
4 | #include <linux/kernel.h> | |
5 | #include <linux/mm.h> | |
6 | #include <linux/mman.h> | |
7 | #include <linux/mmzone.h> | |
8 | #include <linux/proc_fs.h> | |
9 | #include <linux/quicklist.h> | |
10 | #include <linux/seq_file.h> | |
11 | #include <linux/swap.h> | |
12 | #include <linux/vmstat.h> | |
13 | #include <asm/atomic.h> | |
14 | #include <asm/page.h> | |
15 | #include <asm/pgtable.h> | |
16 | #include "internal.h" | |
17 | ||
18 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | |
19 | { | |
20 | } | |
21 | ||
22 | static int meminfo_proc_show(struct seq_file *m, void *v) | |
23 | { | |
24 | struct sysinfo i; | |
25 | unsigned long committed; | |
26 | unsigned long allowed; | |
27 | struct vmalloc_info vmi; | |
28 | long cached; | |
29 | unsigned long pages[NR_LRU_LISTS]; | |
30 | int lru; | |
31 | ||
32 | /* | |
33 | * display in kilobytes. | |
34 | */ | |
35 | #define K(x) ((x) << (PAGE_SHIFT - 10)) | |
36 | si_meminfo(&i); | |
37 | si_swapinfo(&i); | |
38 | committed = atomic_long_read(&vm_committed_space); | |
39 | allowed = ((totalram_pages - hugetlb_total_pages()) | |
40 | * sysctl_overcommit_ratio / 100) + total_swap_pages; | |
41 | ||
42 | cached = global_page_state(NR_FILE_PAGES) - | |
43 | total_swapcache_pages - i.bufferram; | |
44 | if (cached < 0) | |
45 | cached = 0; | |
46 | ||
47 | get_vmalloc_info(&vmi); | |
48 | ||
49 | for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) | |
50 | pages[lru] = global_page_state(NR_LRU_BASE + lru); | |
51 | ||
52 | /* | |
53 | * Tagged format, for easy grepping and expansion. | |
54 | */ | |
55 | seq_printf(m, | |
56 | "MemTotal: %8lu kB\n" | |
57 | "MemFree: %8lu kB\n" | |
58 | "Buffers: %8lu kB\n" | |
59 | "Cached: %8lu kB\n" | |
60 | "SwapCached: %8lu kB\n" | |
61 | "Active: %8lu kB\n" | |
62 | "Inactive: %8lu kB\n" | |
63 | "Active(anon): %8lu kB\n" | |
64 | "Inactive(anon): %8lu kB\n" | |
65 | "Active(file): %8lu kB\n" | |
66 | "Inactive(file): %8lu kB\n" | |
67 | #ifdef CONFIG_UNEVICTABLE_LRU | |
68 | "Unevictable: %8lu kB\n" | |
69 | "Mlocked: %8lu kB\n" | |
70 | #endif | |
71 | #ifdef CONFIG_HIGHMEM | |
72 | "HighTotal: %8lu kB\n" | |
73 | "HighFree: %8lu kB\n" | |
74 | "LowTotal: %8lu kB\n" | |
75 | "LowFree: %8lu kB\n" | |
8feae131 DH |
76 | #endif |
77 | #ifndef CONFIG_MMU | |
78 | "MmapCopy: %8lu kB\n" | |
e1759c21 AD |
79 | #endif |
80 | "SwapTotal: %8lu kB\n" | |
81 | "SwapFree: %8lu kB\n" | |
82 | "Dirty: %8lu kB\n" | |
83 | "Writeback: %8lu kB\n" | |
84 | "AnonPages: %8lu kB\n" | |
85 | "Mapped: %8lu kB\n" | |
86 | "Slab: %8lu kB\n" | |
87 | "SReclaimable: %8lu kB\n" | |
88 | "SUnreclaim: %8lu kB\n" | |
89 | "PageTables: %8lu kB\n" | |
90 | #ifdef CONFIG_QUICKLIST | |
91 | "Quicklists: %8lu kB\n" | |
92 | #endif | |
93 | "NFS_Unstable: %8lu kB\n" | |
94 | "Bounce: %8lu kB\n" | |
95 | "WritebackTmp: %8lu kB\n" | |
96 | "CommitLimit: %8lu kB\n" | |
97 | "Committed_AS: %8lu kB\n" | |
98 | "VmallocTotal: %8lu kB\n" | |
99 | "VmallocUsed: %8lu kB\n" | |
100 | "VmallocChunk: %8lu kB\n", | |
101 | K(i.totalram), | |
102 | K(i.freeram), | |
103 | K(i.bufferram), | |
104 | K(cached), | |
105 | K(total_swapcache_pages), | |
106 | K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]), | |
107 | K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]), | |
108 | K(pages[LRU_ACTIVE_ANON]), | |
109 | K(pages[LRU_INACTIVE_ANON]), | |
110 | K(pages[LRU_ACTIVE_FILE]), | |
111 | K(pages[LRU_INACTIVE_FILE]), | |
112 | #ifdef CONFIG_UNEVICTABLE_LRU | |
113 | K(pages[LRU_UNEVICTABLE]), | |
114 | K(global_page_state(NR_MLOCK)), | |
115 | #endif | |
116 | #ifdef CONFIG_HIGHMEM | |
117 | K(i.totalhigh), | |
118 | K(i.freehigh), | |
119 | K(i.totalram-i.totalhigh), | |
120 | K(i.freeram-i.freehigh), | |
8feae131 DH |
121 | #endif |
122 | #ifndef CONFIG_MMU | |
33e5d769 | 123 | K((unsigned long) atomic_long_read(&mmap_pages_allocated)), |
e1759c21 AD |
124 | #endif |
125 | K(i.totalswap), | |
126 | K(i.freeswap), | |
127 | K(global_page_state(NR_FILE_DIRTY)), | |
128 | K(global_page_state(NR_WRITEBACK)), | |
129 | K(global_page_state(NR_ANON_PAGES)), | |
130 | K(global_page_state(NR_FILE_MAPPED)), | |
131 | K(global_page_state(NR_SLAB_RECLAIMABLE) + | |
132 | global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
133 | K(global_page_state(NR_SLAB_RECLAIMABLE)), | |
134 | K(global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
135 | K(global_page_state(NR_PAGETABLE)), | |
136 | #ifdef CONFIG_QUICKLIST | |
137 | K(quicklist_total_size()), | |
138 | #endif | |
139 | K(global_page_state(NR_UNSTABLE_NFS)), | |
140 | K(global_page_state(NR_BOUNCE)), | |
141 | K(global_page_state(NR_WRITEBACK_TEMP)), | |
142 | K(allowed), | |
143 | K(committed), | |
144 | (unsigned long)VMALLOC_TOTAL >> 10, | |
145 | vmi.used >> 10, | |
146 | vmi.largest_chunk >> 10 | |
147 | ); | |
148 | ||
149 | hugetlb_report_meminfo(m); | |
150 | ||
151 | arch_report_meminfo(m); | |
152 | ||
153 | return 0; | |
154 | #undef K | |
155 | } | |
156 | ||
157 | static int meminfo_proc_open(struct inode *inode, struct file *file) | |
158 | { | |
159 | return single_open(file, meminfo_proc_show, NULL); | |
160 | } | |
161 | ||
162 | static const struct file_operations meminfo_proc_fops = { | |
163 | .open = meminfo_proc_open, | |
164 | .read = seq_read, | |
165 | .llseek = seq_lseek, | |
166 | .release = single_release, | |
167 | }; | |
168 | ||
169 | static int __init proc_meminfo_init(void) | |
170 | { | |
171 | proc_create("meminfo", 0, NULL, &meminfo_proc_fops); | |
172 | return 0; | |
173 | } | |
174 | module_init(proc_meminfo_init); |