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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> | |
7e8a6304 | 10 | #include <linux/percpu.h> |
e1759c21 AD |
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 | 19 | #include <asm/page.h> |
e1759c21 AD |
20 | #include "internal.h" |
21 | ||
22 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | |
23 | { | |
24 | } | |
25 | ||
e16e2d8e JP |
26 | static void show_val_kb(struct seq_file *m, const char *s, unsigned long num) |
27 | { | |
d1be35cb | 28 | seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8); |
e16e2d8e JP |
29 | seq_write(m, " kB\n", 4); |
30 | } | |
31 | ||
e1759c21 AD |
32 | static int meminfo_proc_show(struct seq_file *m, void *v) |
33 | { | |
34 | struct sysinfo i; | |
35 | unsigned long committed; | |
e1759c21 | 36 | long cached; |
34e431b0 | 37 | long available; |
e1759c21 | 38 | unsigned long pages[NR_LRU_LISTS]; |
61f94e18 | 39 | unsigned long sreclaimable, sunreclaim; |
e1759c21 AD |
40 | int lru; |
41 | ||
e1759c21 AD |
42 | si_meminfo(&i); |
43 | si_swapinfo(&i); | |
00a62ce9 | 44 | committed = percpu_counter_read_positive(&vm_committed_as); |
e1759c21 | 45 | |
11fb9989 | 46 | cached = global_node_page_state(NR_FILE_PAGES) - |
33806f06 | 47 | total_swapcache_pages() - i.bufferram; |
e1759c21 AD |
48 | if (cached < 0) |
49 | cached = 0; | |
50 | ||
e1759c21 | 51 | for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) |
2f95ff90 | 52 | pages[lru] = global_node_page_state(NR_LRU_BASE + lru); |
e1759c21 | 53 | |
d02bd27b | 54 | available = si_mem_available(); |
d42f3245 RG |
55 | sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B); |
56 | sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B); | |
34e431b0 | 57 | |
e16e2d8e JP |
58 | show_val_kb(m, "MemTotal: ", i.totalram); |
59 | show_val_kb(m, "MemFree: ", i.freeram); | |
60 | show_val_kb(m, "MemAvailable: ", available); | |
61 | show_val_kb(m, "Buffers: ", i.bufferram); | |
62 | show_val_kb(m, "Cached: ", cached); | |
63 | show_val_kb(m, "SwapCached: ", total_swapcache_pages()); | |
64 | show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] + | |
65 | pages[LRU_ACTIVE_FILE]); | |
66 | show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + | |
67 | pages[LRU_INACTIVE_FILE]); | |
68 | show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]); | |
69 | show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); | |
70 | show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); | |
71 | show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); | |
72 | show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); | |
c41f012a | 73 | show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); |
e16e2d8e | 74 | |
e1759c21 | 75 | #ifdef CONFIG_HIGHMEM |
e16e2d8e JP |
76 | show_val_kb(m, "HighTotal: ", i.totalhigh); |
77 | show_val_kb(m, "HighFree: ", i.freehigh); | |
78 | show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); | |
79 | show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); | |
8feae131 | 80 | #endif |
e16e2d8e | 81 | |
8feae131 | 82 | #ifndef CONFIG_MMU |
e16e2d8e JP |
83 | show_val_kb(m, "MmapCopy: ", |
84 | (unsigned long)atomic_long_read(&mmap_pages_allocated)); | |
e1759c21 | 85 | #endif |
e16e2d8e JP |
86 | |
87 | show_val_kb(m, "SwapTotal: ", i.totalswap); | |
88 | show_val_kb(m, "SwapFree: ", i.freeswap); | |
89 | show_val_kb(m, "Dirty: ", | |
90 | global_node_page_state(NR_FILE_DIRTY)); | |
91 | show_val_kb(m, "Writeback: ", | |
92 | global_node_page_state(NR_WRITEBACK)); | |
93 | show_val_kb(m, "AnonPages: ", | |
94 | global_node_page_state(NR_ANON_MAPPED)); | |
95 | show_val_kb(m, "Mapped: ", | |
96 | global_node_page_state(NR_FILE_MAPPED)); | |
97 | show_val_kb(m, "Shmem: ", i.sharedram); | |
61f94e18 VB |
98 | show_val_kb(m, "KReclaimable: ", sreclaimable + |
99 | global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE)); | |
100 | show_val_kb(m, "Slab: ", sreclaimable + sunreclaim); | |
101 | show_val_kb(m, "SReclaimable: ", sreclaimable); | |
102 | show_val_kb(m, "SUnreclaim: ", sunreclaim); | |
e16e2d8e | 103 | seq_printf(m, "KernelStack: %8lu kB\n", |
991e7673 | 104 | global_node_page_state(NR_KERNEL_STACK_KB)); |
628d06a4 ST |
105 | #ifdef CONFIG_SHADOW_CALL_STACK |
106 | seq_printf(m, "ShadowCallStack:%8lu kB\n", | |
991e7673 | 107 | global_node_page_state(NR_KERNEL_SCS_KB)); |
628d06a4 | 108 | #endif |
e16e2d8e | 109 | show_val_kb(m, "PageTables: ", |
c41f012a | 110 | global_zone_page_state(NR_PAGETABLE)); |
e16e2d8e | 111 | |
8d92890b | 112 | show_val_kb(m, "NFS_Unstable: ", 0); |
e16e2d8e | 113 | show_val_kb(m, "Bounce: ", |
c41f012a | 114 | global_zone_page_state(NR_BOUNCE)); |
e16e2d8e JP |
115 | show_val_kb(m, "WritebackTmp: ", |
116 | global_node_page_state(NR_WRITEBACK_TEMP)); | |
117 | show_val_kb(m, "CommitLimit: ", vm_commit_limit()); | |
118 | show_val_kb(m, "Committed_AS: ", committed); | |
119 | seq_printf(m, "VmallocTotal: %8lu kB\n", | |
120 | (unsigned long)VMALLOC_TOTAL >> 10); | |
97105f0a | 121 | show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages()); |
e16e2d8e | 122 | show_val_kb(m, "VmallocChunk: ", 0ul); |
7e8a6304 | 123 | show_val_kb(m, "Percpu: ", pcpu_nr_pages()); |
e16e2d8e | 124 | |
6a46079c | 125 | #ifdef CONFIG_MEMORY_FAILURE |
e16e2d8e JP |
126 | seq_printf(m, "HardwareCorrupted: %5lu kB\n", |
127 | atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)); | |
79134171 | 128 | #endif |
e16e2d8e | 129 | |
79134171 | 130 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e16e2d8e JP |
131 | show_val_kb(m, "AnonHugePages: ", |
132 | global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR); | |
133 | show_val_kb(m, "ShmemHugePages: ", | |
134 | global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); | |
135 | show_val_kb(m, "ShmemPmdMapped: ", | |
136 | global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR); | |
2be5fbf9 | 137 | show_val_kb(m, "FileHugePages: ", |
60fbf0ab | 138 | global_node_page_state(NR_FILE_THPS) * HPAGE_PMD_NR); |
2be5fbf9 | 139 | show_val_kb(m, "FilePmdMapped: ", |
60fbf0ab | 140 | global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR); |
47f8f929 | 141 | #endif |
e16e2d8e | 142 | |
47f8f929 | 143 | #ifdef CONFIG_CMA |
e16e2d8e JP |
144 | show_val_kb(m, "CmaTotal: ", totalcma_pages); |
145 | show_val_kb(m, "CmaFree: ", | |
c41f012a | 146 | global_zone_page_state(NR_FREE_CMA_PAGES)); |
6a46079c | 147 | #endif |
e1759c21 AD |
148 | |
149 | hugetlb_report_meminfo(m); | |
150 | ||
151 | arch_report_meminfo(m); | |
152 | ||
153 | return 0; | |
e1759c21 AD |
154 | } |
155 | ||
e1759c21 AD |
156 | static int __init proc_meminfo_init(void) |
157 | { | |
3f3942ac | 158 | proc_create_single("meminfo", 0, NULL, meminfo_proc_show); |
e1759c21 AD |
159 | return 0; |
160 | } | |
abaf3787 | 161 | fs_initcall(proc_meminfo_init); |