Loading...
1#include <linux/fs.h>
2#include <linux/hugetlb.h>
3#include <linux/init.h>
4#include <linux/kernel.h>
5#include <linux/mm.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 <asm/page.h>
15#include <asm/pgtable.h>
16#include "internal.h"
17
18void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
19{
20}
21
22static int meminfo_proc_show(struct seq_file *m, void *v)
23{
24 struct sysinfo i;
25 unsigned long committed;
26 unsigned long allowed;
27 struct vmalloc_info vmi;
28 long cached;
29 unsigned long pages[NR_LRU_LISTS];
30 int lru;
31
32/*
33 * display in kilobytes.
34 */
35#define K(x) ((x) << (PAGE_SHIFT - 10))
36 si_meminfo(&i);
37 si_swapinfo(&i);
38 committed = percpu_counter_read_positive(&vm_committed_as);
39 allowed = ((totalram_pages - hugetlb_total_pages())
40 * sysctl_overcommit_ratio / 100) + total_swap_pages;
41
42 cached = global_page_state(NR_FILE_PAGES) -
43 total_swapcache_pages - i.bufferram;
44 if (cached < 0)
45 cached = 0;
46
47 get_vmalloc_info(&vmi);
48
49 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
50 pages[lru] = global_page_state(NR_LRU_BASE + lru);
51
52 /*
53 * Tagged format, for easy grepping and expansion.
54 */
55 seq_printf(m,
56 "MemTotal: %8lu kB\n"
57 "MemFree: %8lu kB\n"
58 "Buffers: %8lu kB\n"
59 "Cached: %8lu kB\n"
60 "SwapCached: %8lu kB\n"
61 "Active: %8lu kB\n"
62 "Inactive: %8lu kB\n"
63 "Active(anon): %8lu kB\n"
64 "Inactive(anon): %8lu kB\n"
65 "Active(file): %8lu kB\n"
66 "Inactive(file): %8lu kB\n"
67 "Unevictable: %8lu kB\n"
68 "Mlocked: %8lu kB\n"
69#ifdef CONFIG_HIGHMEM
70 "HighTotal: %8lu kB\n"
71 "HighFree: %8lu kB\n"
72 "LowTotal: %8lu kB\n"
73 "LowFree: %8lu kB\n"
74#endif
75#ifndef CONFIG_MMU
76 "MmapCopy: %8lu kB\n"
77#endif
78 "SwapTotal: %8lu kB\n"
79 "SwapFree: %8lu kB\n"
80 "Dirty: %8lu kB\n"
81 "Writeback: %8lu kB\n"
82 "AnonPages: %8lu kB\n"
83 "Mapped: %8lu kB\n"
84 "Shmem: %8lu kB\n"
85 "Slab: %8lu kB\n"
86 "SReclaimable: %8lu kB\n"
87 "SUnreclaim: %8lu kB\n"
88 "KernelStack: %8lu kB\n"
89 "PageTables: %8lu kB\n"
90#ifdef CONFIG_QUICKLIST
91 "Quicklists: %8lu kB\n"
92#endif
93 "NFS_Unstable: %8lu kB\n"
94 "Bounce: %8lu kB\n"
95 "WritebackTmp: %8lu kB\n"
96 "CommitLimit: %8lu kB\n"
97 "Committed_AS: %8lu kB\n"
98 "VmallocTotal: %8lu kB\n"
99 "VmallocUsed: %8lu kB\n"
100 "VmallocChunk: %8lu kB\n"
101#ifdef CONFIG_MEMORY_FAILURE
102 "HardwareCorrupted: %5lu kB\n"
103#endif
104#ifdef CONFIG_TRANSPARENT_HUGEPAGE
105 "AnonHugePages: %8lu kB\n"
106#endif
107 ,
108 K(i.totalram),
109 K(i.freeram),
110 K(i.bufferram),
111 K(cached),
112 K(total_swapcache_pages),
113 K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]),
114 K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]),
115 K(pages[LRU_ACTIVE_ANON]),
116 K(pages[LRU_INACTIVE_ANON]),
117 K(pages[LRU_ACTIVE_FILE]),
118 K(pages[LRU_INACTIVE_FILE]),
119 K(pages[LRU_UNEVICTABLE]),
120 K(global_page_state(NR_MLOCK)),
121#ifdef CONFIG_HIGHMEM
122 K(i.totalhigh),
123 K(i.freehigh),
124 K(i.totalram-i.totalhigh),
125 K(i.freeram-i.freehigh),
126#endif
127#ifndef CONFIG_MMU
128 K((unsigned long) atomic_long_read(&mmap_pages_allocated)),
129#endif
130 K(i.totalswap),
131 K(i.freeswap),
132 K(global_page_state(NR_FILE_DIRTY)),
133 K(global_page_state(NR_WRITEBACK)),
134 K(global_page_state(NR_ANON_PAGES)
135#ifdef CONFIG_TRANSPARENT_HUGEPAGE
136 + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
137 HPAGE_PMD_NR
138#endif
139 ),
140 K(global_page_state(NR_FILE_MAPPED)),
141 K(global_page_state(NR_SHMEM)),
142 K(global_page_state(NR_SLAB_RECLAIMABLE) +
143 global_page_state(NR_SLAB_UNRECLAIMABLE)),
144 K(global_page_state(NR_SLAB_RECLAIMABLE)),
145 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
146 global_page_state(NR_KERNEL_STACK) * THREAD_SIZE / 1024,
147 K(global_page_state(NR_PAGETABLE)),
148#ifdef CONFIG_QUICKLIST
149 K(quicklist_total_size()),
150#endif
151 K(global_page_state(NR_UNSTABLE_NFS)),
152 K(global_page_state(NR_BOUNCE)),
153 K(global_page_state(NR_WRITEBACK_TEMP)),
154 K(allowed),
155 K(committed),
156 (unsigned long)VMALLOC_TOTAL >> 10,
157 vmi.used >> 10,
158 vmi.largest_chunk >> 10
159#ifdef CONFIG_MEMORY_FAILURE
160 ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10)
161#endif
162#ifdef CONFIG_TRANSPARENT_HUGEPAGE
163 ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
164 HPAGE_PMD_NR)
165#endif
166 );
167
168 hugetlb_report_meminfo(m);
169
170 arch_report_meminfo(m);
171
172 return 0;
173#undef K
174}
175
176static int meminfo_proc_open(struct inode *inode, struct file *file)
177{
178 return single_open(file, meminfo_proc_show, NULL);
179}
180
181static const struct file_operations meminfo_proc_fops = {
182 .open = meminfo_proc_open,
183 .read = seq_read,
184 .llseek = seq_lseek,
185 .release = single_release,
186};
187
188static int __init proc_meminfo_init(void)
189{
190 proc_create("meminfo", 0, NULL, &meminfo_proc_fops);
191 return 0;
192}
193module_init(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#ifdef CONFIG_ZSWAP
90 seq_printf(m, "Zswap: %8lu kB\n",
91 (unsigned long)(zswap_pool_total_size >> 10));
92 seq_printf(m, "Zswapped: %8lu kB\n",
93 (unsigned long)atomic_read(&zswap_stored_pages) <<
94 (PAGE_SHIFT - 10));
95#endif
96 show_val_kb(m, "Dirty: ",
97 global_node_page_state(NR_FILE_DIRTY));
98 show_val_kb(m, "Writeback: ",
99 global_node_page_state(NR_WRITEBACK));
100 show_val_kb(m, "AnonPages: ",
101 global_node_page_state(NR_ANON_MAPPED));
102 show_val_kb(m, "Mapped: ",
103 global_node_page_state(NR_FILE_MAPPED));
104 show_val_kb(m, "Shmem: ", i.sharedram);
105 show_val_kb(m, "KReclaimable: ", sreclaimable +
106 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));
107 show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
108 show_val_kb(m, "SReclaimable: ", sreclaimable);
109 show_val_kb(m, "SUnreclaim: ", sunreclaim);
110 seq_printf(m, "KernelStack: %8lu kB\n",
111 global_node_page_state(NR_KERNEL_STACK_KB));
112#ifdef CONFIG_SHADOW_CALL_STACK
113 seq_printf(m, "ShadowCallStack:%8lu kB\n",
114 global_node_page_state(NR_KERNEL_SCS_KB));
115#endif
116 show_val_kb(m, "PageTables: ",
117 global_node_page_state(NR_PAGETABLE));
118 show_val_kb(m, "SecPageTables: ",
119 global_node_page_state(NR_SECONDARY_PAGETABLE));
120
121 show_val_kb(m, "NFS_Unstable: ", 0);
122 show_val_kb(m, "Bounce: ",
123 global_zone_page_state(NR_BOUNCE));
124 show_val_kb(m, "WritebackTmp: ",
125 global_node_page_state(NR_WRITEBACK_TEMP));
126 show_val_kb(m, "CommitLimit: ", vm_commit_limit());
127 show_val_kb(m, "Committed_AS: ", committed);
128 seq_printf(m, "VmallocTotal: %8lu kB\n",
129 (unsigned long)VMALLOC_TOTAL >> 10);
130 show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());
131 show_val_kb(m, "VmallocChunk: ", 0ul);
132 show_val_kb(m, "Percpu: ", pcpu_nr_pages());
133
134#ifdef CONFIG_MEMORY_FAILURE
135 seq_printf(m, "HardwareCorrupted: %5lu kB\n",
136 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
137#endif
138
139#ifdef CONFIG_TRANSPARENT_HUGEPAGE
140 show_val_kb(m, "AnonHugePages: ",
141 global_node_page_state(NR_ANON_THPS));
142 show_val_kb(m, "ShmemHugePages: ",
143 global_node_page_state(NR_SHMEM_THPS));
144 show_val_kb(m, "ShmemPmdMapped: ",
145 global_node_page_state(NR_SHMEM_PMDMAPPED));
146 show_val_kb(m, "FileHugePages: ",
147 global_node_page_state(NR_FILE_THPS));
148 show_val_kb(m, "FilePmdMapped: ",
149 global_node_page_state(NR_FILE_PMDMAPPED));
150#endif
151
152#ifdef CONFIG_CMA
153 show_val_kb(m, "CmaTotal: ", totalcma_pages);
154 show_val_kb(m, "CmaFree: ",
155 global_zone_page_state(NR_FREE_CMA_PAGES));
156#endif
157
158 hugetlb_report_meminfo(m);
159
160 arch_report_meminfo(m);
161
162 return 0;
163}
164
165static int __init proc_meminfo_init(void)
166{
167 struct proc_dir_entry *pde;
168
169 pde = proc_create_single("meminfo", 0, NULL, meminfo_proc_show);
170 pde_make_permanent(pde);
171 return 0;
172}
173fs_initcall(proc_meminfo_init);