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