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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> | |
bd23024b | 9 | #include <linux/memblock.h> |
e1759c21 | 10 | #include <linux/proc_fs.h> |
7e8a6304 | 11 | #include <linux/percpu.h> |
e1759c21 AD |
12 | #include <linux/seq_file.h> |
13 | #include <linux/swap.h> | |
14 | #include <linux/vmstat.h> | |
60063497 | 15 | #include <linux/atomic.h> |
db3808c1 | 16 | #include <linux/vmalloc.h> |
47f8f929 PK |
17 | #ifdef CONFIG_CMA |
18 | #include <linux/cma.h> | |
19 | #endif | |
e1759c21 | 20 | #include <asm/page.h> |
e1759c21 AD |
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 | { | |
d1be35cb | 29 | seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8); |
e16e2d8e JP |
30 | seq_write(m, " kB\n", 4); |
31 | } | |
32 | ||
e1759c21 AD |
33 | static int meminfo_proc_show(struct seq_file *m, void *v) |
34 | { | |
35 | struct sysinfo i; | |
36 | unsigned long committed; | |
e1759c21 | 37 | long cached; |
34e431b0 | 38 | long available; |
e1759c21 | 39 | unsigned long pages[NR_LRU_LISTS]; |
61f94e18 | 40 | unsigned long sreclaimable, sunreclaim; |
e1759c21 AD |
41 | int lru; |
42 | ||
e1759c21 AD |
43 | si_meminfo(&i); |
44 | si_swapinfo(&i); | |
1455083c | 45 | committed = vm_memory_committed(); |
e1759c21 | 46 | |
11fb9989 | 47 | cached = global_node_page_state(NR_FILE_PAGES) - |
33806f06 | 48 | total_swapcache_pages() - i.bufferram; |
e1759c21 AD |
49 | if (cached < 0) |
50 | cached = 0; | |
51 | ||
e1759c21 | 52 | for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) |
2f95ff90 | 53 | pages[lru] = global_node_page_state(NR_LRU_BASE + lru); |
e1759c21 | 54 | |
d02bd27b | 55 | available = si_mem_available(); |
d42f3245 RG |
56 | sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B); |
57 | sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B); | |
34e431b0 | 58 | |
e16e2d8e JP |
59 | show_val_kb(m, "MemTotal: ", i.totalram); |
60 | show_val_kb(m, "MemFree: ", i.freeram); | |
61 | show_val_kb(m, "MemAvailable: ", available); | |
62 | show_val_kb(m, "Buffers: ", i.bufferram); | |
63 | show_val_kb(m, "Cached: ", cached); | |
64 | show_val_kb(m, "SwapCached: ", total_swapcache_pages()); | |
65 | show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] + | |
66 | pages[LRU_ACTIVE_FILE]); | |
67 | show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + | |
68 | pages[LRU_INACTIVE_FILE]); | |
69 | show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]); | |
70 | show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); | |
71 | show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); | |
72 | show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); | |
73 | show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); | |
c41f012a | 74 | show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); |
e16e2d8e | 75 | |
e1759c21 | 76 | #ifdef CONFIG_HIGHMEM |
e16e2d8e JP |
77 | show_val_kb(m, "HighTotal: ", i.totalhigh); |
78 | show_val_kb(m, "HighFree: ", i.freehigh); | |
79 | show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); | |
80 | show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); | |
8feae131 | 81 | #endif |
e16e2d8e | 82 | |
8feae131 | 83 | #ifndef CONFIG_MMU |
e16e2d8e JP |
84 | show_val_kb(m, "MmapCopy: ", |
85 | (unsigned long)atomic_long_read(&mmap_pages_allocated)); | |
e1759c21 | 86 | #endif |
e16e2d8e JP |
87 | |
88 | show_val_kb(m, "SwapTotal: ", i.totalswap); | |
89 | show_val_kb(m, "SwapFree: ", i.freeswap); | |
f6498b77 JW |
90 | #ifdef CONFIG_ZSWAP |
91 | seq_printf(m, "Zswap: %8lu kB\n", | |
92 | (unsigned long)(zswap_pool_total_size >> 10)); | |
93 | seq_printf(m, "Zswapped: %8lu kB\n", | |
94 | (unsigned long)atomic_read(&zswap_stored_pages) << | |
95 | (PAGE_SHIFT - 10)); | |
96 | #endif | |
e16e2d8e JP |
97 | show_val_kb(m, "Dirty: ", |
98 | global_node_page_state(NR_FILE_DIRTY)); | |
99 | show_val_kb(m, "Writeback: ", | |
100 | global_node_page_state(NR_WRITEBACK)); | |
101 | show_val_kb(m, "AnonPages: ", | |
102 | global_node_page_state(NR_ANON_MAPPED)); | |
103 | show_val_kb(m, "Mapped: ", | |
104 | global_node_page_state(NR_FILE_MAPPED)); | |
105 | show_val_kb(m, "Shmem: ", i.sharedram); | |
61f94e18 VB |
106 | show_val_kb(m, "KReclaimable: ", sreclaimable + |
107 | global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE)); | |
108 | show_val_kb(m, "Slab: ", sreclaimable + sunreclaim); | |
109 | show_val_kb(m, "SReclaimable: ", sreclaimable); | |
110 | show_val_kb(m, "SUnreclaim: ", sunreclaim); | |
e16e2d8e | 111 | seq_printf(m, "KernelStack: %8lu kB\n", |
991e7673 | 112 | global_node_page_state(NR_KERNEL_STACK_KB)); |
628d06a4 ST |
113 | #ifdef CONFIG_SHADOW_CALL_STACK |
114 | seq_printf(m, "ShadowCallStack:%8lu kB\n", | |
991e7673 | 115 | global_node_page_state(NR_KERNEL_SCS_KB)); |
628d06a4 | 116 | #endif |
e16e2d8e | 117 | show_val_kb(m, "PageTables: ", |
f0c0c115 | 118 | global_node_page_state(NR_PAGETABLE)); |
f850c849 | 119 | show_val_kb(m, "SecPageTables: ", |
ebc97a52 | 120 | global_node_page_state(NR_SECONDARY_PAGETABLE)); |
e16e2d8e | 121 | |
8d92890b | 122 | show_val_kb(m, "NFS_Unstable: ", 0); |
e16e2d8e | 123 | show_val_kb(m, "Bounce: ", |
c41f012a | 124 | global_zone_page_state(NR_BOUNCE)); |
e16e2d8e JP |
125 | show_val_kb(m, "WritebackTmp: ", |
126 | global_node_page_state(NR_WRITEBACK_TEMP)); | |
127 | show_val_kb(m, "CommitLimit: ", vm_commit_limit()); | |
128 | show_val_kb(m, "Committed_AS: ", committed); | |
129 | seq_printf(m, "VmallocTotal: %8lu kB\n", | |
130 | (unsigned long)VMALLOC_TOTAL >> 10); | |
97105f0a | 131 | show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages()); |
e16e2d8e | 132 | show_val_kb(m, "VmallocChunk: ", 0ul); |
7e8a6304 | 133 | show_val_kb(m, "Percpu: ", pcpu_nr_pages()); |
e16e2d8e | 134 | |
bd23024b TM |
135 | #ifdef CONFIG_MEMTEST |
136 | if (early_memtest_done) { | |
137 | unsigned long early_memtest_bad_size_kb; | |
138 | ||
139 | early_memtest_bad_size_kb = early_memtest_bad_size>>10; | |
140 | if (early_memtest_bad_size && !early_memtest_bad_size_kb) | |
141 | early_memtest_bad_size_kb = 1; | |
142 | /* When 0 is reported, it means there actually was a successful test */ | |
143 | seq_printf(m, "EarlyMemtestBad: %5lu kB\n", early_memtest_bad_size_kb); | |
144 | } | |
145 | #endif | |
146 | ||
6a46079c | 147 | #ifdef CONFIG_MEMORY_FAILURE |
e16e2d8e JP |
148 | seq_printf(m, "HardwareCorrupted: %5lu kB\n", |
149 | atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)); | |
79134171 | 150 | #endif |
e16e2d8e | 151 | |
79134171 | 152 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e16e2d8e | 153 | show_val_kb(m, "AnonHugePages: ", |
69473e5d | 154 | global_node_page_state(NR_ANON_THPS)); |
e16e2d8e | 155 | show_val_kb(m, "ShmemHugePages: ", |
57b2847d | 156 | global_node_page_state(NR_SHMEM_THPS)); |
e16e2d8e | 157 | show_val_kb(m, "ShmemPmdMapped: ", |
a1528e21 | 158 | global_node_page_state(NR_SHMEM_PMDMAPPED)); |
2be5fbf9 | 159 | show_val_kb(m, "FileHugePages: ", |
bf9ecead | 160 | global_node_page_state(NR_FILE_THPS)); |
2be5fbf9 | 161 | show_val_kb(m, "FilePmdMapped: ", |
380780e7 | 162 | global_node_page_state(NR_FILE_PMDMAPPED)); |
47f8f929 | 163 | #endif |
e16e2d8e | 164 | |
47f8f929 | 165 | #ifdef CONFIG_CMA |
e16e2d8e JP |
166 | show_val_kb(m, "CmaTotal: ", totalcma_pages); |
167 | show_val_kb(m, "CmaFree: ", | |
c41f012a | 168 | global_zone_page_state(NR_FREE_CMA_PAGES)); |
6a46079c | 169 | #endif |
e1759c21 | 170 | |
dcdfdd40 KS |
171 | #ifdef CONFIG_UNACCEPTED_MEMORY |
172 | show_val_kb(m, "Unaccepted: ", | |
173 | global_zone_page_state(NR_UNACCEPTED)); | |
174 | #endif | |
175 | ||
e1759c21 AD |
176 | hugetlb_report_meminfo(m); |
177 | ||
178 | arch_report_meminfo(m); | |
179 | ||
180 | return 0; | |
e1759c21 AD |
181 | } |
182 | ||
e1759c21 AD |
183 | static int __init proc_meminfo_init(void) |
184 | { | |
ef1d6178 AD |
185 | struct proc_dir_entry *pde; |
186 | ||
187 | pde = proc_create_single("meminfo", 0, NULL, meminfo_proc_show); | |
188 | pde_make_permanent(pde); | |
e1759c21 AD |
189 | return 0; |
190 | } | |
abaf3787 | 191 | fs_initcall(proc_meminfo_init); |