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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
e1759c21 | 2 | #include <linux/fs.h> |
e1759c21 AD |
3 | #include <linux/init.h> |
4 | #include <linux/kernel.h> | |
5 | #include <linux/mm.h> | |
cb900f41 | 6 | #include <linux/hugetlb.h> |
e1759c21 AD |
7 | #include <linux/mman.h> |
8 | #include <linux/mmzone.h> | |
9 | #include <linux/proc_fs.h> | |
10 | #include <linux/quicklist.h> | |
11 | #include <linux/seq_file.h> | |
12 | #include <linux/swap.h> | |
13 | #include <linux/vmstat.h> | |
60063497 | 14 | #include <linux/atomic.h> |
db3808c1 | 15 | #include <linux/vmalloc.h> |
47f8f929 PK |
16 | #ifdef CONFIG_CMA |
17 | #include <linux/cma.h> | |
18 | #endif | |
e1759c21 AD |
19 | #include <asm/page.h> |
20 | #include <asm/pgtable.h> | |
21 | #include "internal.h" | |
22 | ||
23 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | |
24 | { | |
25 | } | |
26 | ||
e16e2d8e JP |
27 | static void show_val_kb(struct seq_file *m, const char *s, unsigned long num) |
28 | { | |
29 | char v[32]; | |
30 | static const char blanks[7] = {' ', ' ', ' ', ' ',' ', ' ', ' '}; | |
31 | int len; | |
32 | ||
33 | len = num_to_str(v, sizeof(v), num << (PAGE_SHIFT - 10)); | |
34 | ||
35 | seq_write(m, s, 16); | |
36 | ||
37 | if (len > 0) { | |
38 | if (len < 8) | |
39 | seq_write(m, blanks, 8 - len); | |
40 | ||
41 | seq_write(m, v, len); | |
42 | } | |
43 | seq_write(m, " kB\n", 4); | |
44 | } | |
45 | ||
e1759c21 AD |
46 | static int meminfo_proc_show(struct seq_file *m, void *v) |
47 | { | |
48 | struct sysinfo i; | |
49 | unsigned long committed; | |
e1759c21 | 50 | long cached; |
34e431b0 | 51 | long available; |
e1759c21 AD |
52 | unsigned long pages[NR_LRU_LISTS]; |
53 | int lru; | |
54 | ||
e1759c21 AD |
55 | si_meminfo(&i); |
56 | si_swapinfo(&i); | |
00a62ce9 | 57 | committed = percpu_counter_read_positive(&vm_committed_as); |
e1759c21 | 58 | |
11fb9989 | 59 | cached = global_node_page_state(NR_FILE_PAGES) - |
33806f06 | 60 | total_swapcache_pages() - i.bufferram; |
e1759c21 AD |
61 | if (cached < 0) |
62 | cached = 0; | |
63 | ||
e1759c21 | 64 | for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) |
2f95ff90 | 65 | pages[lru] = global_node_page_state(NR_LRU_BASE + lru); |
e1759c21 | 66 | |
d02bd27b | 67 | available = si_mem_available(); |
34e431b0 | 68 | |
e16e2d8e JP |
69 | show_val_kb(m, "MemTotal: ", i.totalram); |
70 | show_val_kb(m, "MemFree: ", i.freeram); | |
71 | show_val_kb(m, "MemAvailable: ", available); | |
72 | show_val_kb(m, "Buffers: ", i.bufferram); | |
73 | show_val_kb(m, "Cached: ", cached); | |
74 | show_val_kb(m, "SwapCached: ", total_swapcache_pages()); | |
75 | show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] + | |
76 | pages[LRU_ACTIVE_FILE]); | |
77 | show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + | |
78 | pages[LRU_INACTIVE_FILE]); | |
79 | show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]); | |
80 | show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); | |
81 | show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); | |
82 | show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); | |
83 | show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); | |
c41f012a | 84 | show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); |
e16e2d8e | 85 | |
e1759c21 | 86 | #ifdef CONFIG_HIGHMEM |
e16e2d8e JP |
87 | show_val_kb(m, "HighTotal: ", i.totalhigh); |
88 | show_val_kb(m, "HighFree: ", i.freehigh); | |
89 | show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); | |
90 | show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); | |
8feae131 | 91 | #endif |
e16e2d8e | 92 | |
8feae131 | 93 | #ifndef CONFIG_MMU |
e16e2d8e JP |
94 | show_val_kb(m, "MmapCopy: ", |
95 | (unsigned long)atomic_long_read(&mmap_pages_allocated)); | |
e1759c21 | 96 | #endif |
e16e2d8e JP |
97 | |
98 | show_val_kb(m, "SwapTotal: ", i.totalswap); | |
99 | show_val_kb(m, "SwapFree: ", i.freeswap); | |
100 | show_val_kb(m, "Dirty: ", | |
101 | global_node_page_state(NR_FILE_DIRTY)); | |
102 | show_val_kb(m, "Writeback: ", | |
103 | global_node_page_state(NR_WRITEBACK)); | |
104 | show_val_kb(m, "AnonPages: ", | |
105 | global_node_page_state(NR_ANON_MAPPED)); | |
106 | show_val_kb(m, "Mapped: ", | |
107 | global_node_page_state(NR_FILE_MAPPED)); | |
108 | show_val_kb(m, "Shmem: ", i.sharedram); | |
109 | show_val_kb(m, "Slab: ", | |
d507e2eb JW |
110 | global_node_page_state(NR_SLAB_RECLAIMABLE) + |
111 | global_node_page_state(NR_SLAB_UNRECLAIMABLE)); | |
e16e2d8e JP |
112 | |
113 | show_val_kb(m, "SReclaimable: ", | |
d507e2eb | 114 | global_node_page_state(NR_SLAB_RECLAIMABLE)); |
e16e2d8e | 115 | show_val_kb(m, "SUnreclaim: ", |
d507e2eb | 116 | global_node_page_state(NR_SLAB_UNRECLAIMABLE)); |
e16e2d8e | 117 | seq_printf(m, "KernelStack: %8lu kB\n", |
c41f012a | 118 | global_zone_page_state(NR_KERNEL_STACK_KB)); |
e16e2d8e | 119 | show_val_kb(m, "PageTables: ", |
c41f012a | 120 | global_zone_page_state(NR_PAGETABLE)); |
e1759c21 | 121 | #ifdef CONFIG_QUICKLIST |
e16e2d8e | 122 | show_val_kb(m, "Quicklists: ", quicklist_total_size()); |
e1759c21 | 123 | #endif |
e16e2d8e JP |
124 | |
125 | show_val_kb(m, "NFS_Unstable: ", | |
126 | global_node_page_state(NR_UNSTABLE_NFS)); | |
127 | show_val_kb(m, "Bounce: ", | |
c41f012a | 128 | global_zone_page_state(NR_BOUNCE)); |
e16e2d8e JP |
129 | show_val_kb(m, "WritebackTmp: ", |
130 | global_node_page_state(NR_WRITEBACK_TEMP)); | |
131 | show_val_kb(m, "CommitLimit: ", vm_commit_limit()); | |
132 | show_val_kb(m, "Committed_AS: ", committed); | |
133 | seq_printf(m, "VmallocTotal: %8lu kB\n", | |
134 | (unsigned long)VMALLOC_TOTAL >> 10); | |
135 | show_val_kb(m, "VmallocUsed: ", 0ul); | |
136 | show_val_kb(m, "VmallocChunk: ", 0ul); | |
137 | ||
6a46079c | 138 | #ifdef CONFIG_MEMORY_FAILURE |
e16e2d8e JP |
139 | seq_printf(m, "HardwareCorrupted: %5lu kB\n", |
140 | atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)); | |
79134171 | 141 | #endif |
e16e2d8e | 142 | |
79134171 | 143 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e16e2d8e JP |
144 | show_val_kb(m, "AnonHugePages: ", |
145 | global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR); | |
146 | show_val_kb(m, "ShmemHugePages: ", | |
147 | global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); | |
148 | show_val_kb(m, "ShmemPmdMapped: ", | |
149 | global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR); | |
47f8f929 | 150 | #endif |
e16e2d8e | 151 | |
47f8f929 | 152 | #ifdef CONFIG_CMA |
e16e2d8e JP |
153 | show_val_kb(m, "CmaTotal: ", totalcma_pages); |
154 | show_val_kb(m, "CmaFree: ", | |
c41f012a | 155 | global_zone_page_state(NR_FREE_CMA_PAGES)); |
6a46079c | 156 | #endif |
e1759c21 AD |
157 | |
158 | hugetlb_report_meminfo(m); | |
159 | ||
160 | arch_report_meminfo(m); | |
161 | ||
162 | return 0; | |
e1759c21 AD |
163 | } |
164 | ||
165 | static int meminfo_proc_open(struct inode *inode, struct file *file) | |
166 | { | |
167 | return single_open(file, meminfo_proc_show, NULL); | |
168 | } | |
169 | ||
170 | static const struct file_operations meminfo_proc_fops = { | |
171 | .open = meminfo_proc_open, | |
172 | .read = seq_read, | |
173 | .llseek = seq_lseek, | |
174 | .release = single_release, | |
175 | }; | |
176 | ||
177 | static int __init proc_meminfo_init(void) | |
178 | { | |
179 | proc_create("meminfo", 0, NULL, &meminfo_proc_fops); | |
180 | return 0; | |
181 | } | |
abaf3787 | 182 | fs_initcall(proc_meminfo_init); |