Commit | Line | Data |
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e1759c21 | 1 | #include <linux/fs.h> |
e1759c21 AD |
2 | #include <linux/init.h> |
3 | #include <linux/kernel.h> | |
4 | #include <linux/mm.h> | |
cb900f41 | 5 | #include <linux/hugetlb.h> |
e1759c21 AD |
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> | |
60063497 | 13 | #include <linux/atomic.h> |
db3808c1 | 14 | #include <linux/vmalloc.h> |
47f8f929 PK |
15 | #ifdef CONFIG_CMA |
16 | #include <linux/cma.h> | |
17 | #endif | |
e1759c21 AD |
18 | #include <asm/page.h> |
19 | #include <asm/pgtable.h> | |
20 | #include "internal.h" | |
21 | ||
22 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | |
23 | { | |
24 | } | |
25 | ||
26 | static int meminfo_proc_show(struct seq_file *m, void *v) | |
27 | { | |
28 | struct sysinfo i; | |
29 | unsigned long committed; | |
e1759c21 | 30 | long cached; |
34e431b0 | 31 | long available; |
e1759c21 AD |
32 | unsigned long pages[NR_LRU_LISTS]; |
33 | int lru; | |
34 | ||
35 | /* | |
36 | * display in kilobytes. | |
37 | */ | |
38 | #define K(x) ((x) << (PAGE_SHIFT - 10)) | |
39 | si_meminfo(&i); | |
40 | si_swapinfo(&i); | |
00a62ce9 | 41 | committed = percpu_counter_read_positive(&vm_committed_as); |
e1759c21 | 42 | |
11fb9989 | 43 | cached = global_node_page_state(NR_FILE_PAGES) - |
33806f06 | 44 | total_swapcache_pages() - i.bufferram; |
e1759c21 AD |
45 | if (cached < 0) |
46 | cached = 0; | |
47 | ||
e1759c21 | 48 | for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) |
2f95ff90 | 49 | pages[lru] = global_node_page_state(NR_LRU_BASE + lru); |
e1759c21 | 50 | |
d02bd27b | 51 | available = si_mem_available(); |
34e431b0 | 52 | |
e1759c21 AD |
53 | /* |
54 | * Tagged format, for easy grepping and expansion. | |
55 | */ | |
56 | seq_printf(m, | |
57 | "MemTotal: %8lu kB\n" | |
58 | "MemFree: %8lu kB\n" | |
34e431b0 | 59 | "MemAvailable: %8lu kB\n" |
e1759c21 AD |
60 | "Buffers: %8lu kB\n" |
61 | "Cached: %8lu kB\n" | |
62 | "SwapCached: %8lu kB\n" | |
63 | "Active: %8lu kB\n" | |
64 | "Inactive: %8lu kB\n" | |
65 | "Active(anon): %8lu kB\n" | |
66 | "Inactive(anon): %8lu kB\n" | |
67 | "Active(file): %8lu kB\n" | |
68 | "Inactive(file): %8lu kB\n" | |
e1759c21 AD |
69 | "Unevictable: %8lu kB\n" |
70 | "Mlocked: %8lu kB\n" | |
e1759c21 AD |
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" | |
4b02108a | 86 | "Shmem: %8lu kB\n" |
e1759c21 AD |
87 | "Slab: %8lu kB\n" |
88 | "SReclaimable: %8lu kB\n" | |
89 | "SUnreclaim: %8lu kB\n" | |
c6a7f572 | 90 | "KernelStack: %8lu kB\n" |
e1759c21 AD |
91 | "PageTables: %8lu kB\n" |
92 | #ifdef CONFIG_QUICKLIST | |
93 | "Quicklists: %8lu kB\n" | |
94 | #endif | |
95 | "NFS_Unstable: %8lu kB\n" | |
96 | "Bounce: %8lu kB\n" | |
97 | "WritebackTmp: %8lu kB\n" | |
98 | "CommitLimit: %8lu kB\n" | |
99 | "Committed_AS: %8lu kB\n" | |
100 | "VmallocTotal: %8lu kB\n" | |
101 | "VmallocUsed: %8lu kB\n" | |
6a46079c AK |
102 | "VmallocChunk: %8lu kB\n" |
103 | #ifdef CONFIG_MEMORY_FAILURE | |
370c28de | 104 | "HardwareCorrupted: %5lu kB\n" |
79134171 AA |
105 | #endif |
106 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE | |
107 | "AnonHugePages: %8lu kB\n" | |
65c45377 KS |
108 | "ShmemHugePages: %8lu kB\n" |
109 | "ShmemPmdMapped: %8lu kB\n" | |
47f8f929 PK |
110 | #endif |
111 | #ifdef CONFIG_CMA | |
112 | "CmaTotal: %8lu kB\n" | |
113 | "CmaFree: %8lu kB\n" | |
6a46079c AK |
114 | #endif |
115 | , | |
e1759c21 AD |
116 | K(i.totalram), |
117 | K(i.freeram), | |
34e431b0 | 118 | K(available), |
e1759c21 AD |
119 | K(i.bufferram), |
120 | K(cached), | |
33806f06 | 121 | K(total_swapcache_pages()), |
e1759c21 AD |
122 | K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]), |
123 | K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]), | |
124 | K(pages[LRU_ACTIVE_ANON]), | |
125 | K(pages[LRU_INACTIVE_ANON]), | |
126 | K(pages[LRU_ACTIVE_FILE]), | |
127 | K(pages[LRU_INACTIVE_FILE]), | |
e1759c21 AD |
128 | K(pages[LRU_UNEVICTABLE]), |
129 | K(global_page_state(NR_MLOCK)), | |
e1759c21 AD |
130 | #ifdef CONFIG_HIGHMEM |
131 | K(i.totalhigh), | |
132 | K(i.freehigh), | |
133 | K(i.totalram-i.totalhigh), | |
134 | K(i.freeram-i.freehigh), | |
8feae131 DH |
135 | #endif |
136 | #ifndef CONFIG_MMU | |
33e5d769 | 137 | K((unsigned long) atomic_long_read(&mmap_pages_allocated)), |
e1759c21 AD |
138 | #endif |
139 | K(i.totalswap), | |
140 | K(i.freeswap), | |
11fb9989 MG |
141 | K(global_node_page_state(NR_FILE_DIRTY)), |
142 | K(global_node_page_state(NR_WRITEBACK)), | |
4b9d0fab | 143 | K(global_node_page_state(NR_ANON_MAPPED)), |
50658e2e | 144 | K(global_node_page_state(NR_FILE_MAPPED)), |
cc7452b6 | 145 | K(i.sharedram), |
e1759c21 AD |
146 | K(global_page_state(NR_SLAB_RECLAIMABLE) + |
147 | global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
148 | K(global_page_state(NR_SLAB_RECLAIMABLE)), | |
149 | K(global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
d30dd8be | 150 | global_page_state(NR_KERNEL_STACK_KB), |
e1759c21 AD |
151 | K(global_page_state(NR_PAGETABLE)), |
152 | #ifdef CONFIG_QUICKLIST | |
153 | K(quicklist_total_size()), | |
154 | #endif | |
11fb9989 | 155 | K(global_node_page_state(NR_UNSTABLE_NFS)), |
e1759c21 | 156 | K(global_page_state(NR_BOUNCE)), |
11fb9989 | 157 | K(global_node_page_state(NR_WRITEBACK_TEMP)), |
00619bcc | 158 | K(vm_commit_limit()), |
e1759c21 AD |
159 | K(committed), |
160 | (unsigned long)VMALLOC_TOTAL >> 10, | |
a5ad88ce LT |
161 | 0ul, // used to be vmalloc 'used' |
162 | 0ul // used to be vmalloc 'largest_chunk' | |
6a46079c | 163 | #ifdef CONFIG_MEMORY_FAILURE |
47f8f929 | 164 | , atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10) |
79134171 AA |
165 | #endif |
166 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE | |
11fb9989 MG |
167 | , K(global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR) |
168 | , K(global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR) | |
169 | , K(global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR) | |
47f8f929 PK |
170 | #endif |
171 | #ifdef CONFIG_CMA | |
172 | , K(totalcma_pages) | |
173 | , K(global_page_state(NR_FREE_CMA_PAGES)) | |
6a46079c | 174 | #endif |
e1759c21 AD |
175 | ); |
176 | ||
177 | hugetlb_report_meminfo(m); | |
178 | ||
179 | arch_report_meminfo(m); | |
180 | ||
181 | return 0; | |
182 | #undef K | |
183 | } | |
184 | ||
185 | static int meminfo_proc_open(struct inode *inode, struct file *file) | |
186 | { | |
187 | return single_open(file, meminfo_proc_show, NULL); | |
188 | } | |
189 | ||
190 | static const struct file_operations meminfo_proc_fops = { | |
191 | .open = meminfo_proc_open, | |
192 | .read = seq_read, | |
193 | .llseek = seq_lseek, | |
194 | .release = single_release, | |
195 | }; | |
196 | ||
197 | static int __init proc_meminfo_init(void) | |
198 | { | |
199 | proc_create("meminfo", 0, NULL, &meminfo_proc_fops); | |
200 | return 0; | |
201 | } | |
abaf3787 | 202 | fs_initcall(proc_meminfo_init); |