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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#ifdef CONFIG_TRANSPARENT_HUGEPAGE
135 K(global_page_state(NR_ANON_PAGES)
136 + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
137 HPAGE_PMD_NR),
138#else
139 K(global_page_state(NR_ANON_PAGES)),
140#endif
141 K(global_page_state(NR_FILE_MAPPED)),
142 K(global_page_state(NR_SHMEM)),
143 K(global_page_state(NR_SLAB_RECLAIMABLE) +
144 global_page_state(NR_SLAB_UNRECLAIMABLE)),
145 K(global_page_state(NR_SLAB_RECLAIMABLE)),
146 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
147 global_page_state(NR_KERNEL_STACK) * THREAD_SIZE / 1024,
148 K(global_page_state(NR_PAGETABLE)),
149#ifdef CONFIG_QUICKLIST
150 K(quicklist_total_size()),
151#endif
152 K(global_page_state(NR_UNSTABLE_NFS)),
153 K(global_page_state(NR_BOUNCE)),
154 K(global_page_state(NR_WRITEBACK_TEMP)),
155 K(allowed),
156 K(committed),
157 (unsigned long)VMALLOC_TOTAL >> 10,
158 vmi.used >> 10,
159 vmi.largest_chunk >> 10
160#ifdef CONFIG_MEMORY_FAILURE
161 ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10)
162#endif
163#ifdef CONFIG_TRANSPARENT_HUGEPAGE
164 ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
165 HPAGE_PMD_NR)
166#endif
167 );
168
169 hugetlb_report_meminfo(m);
170
171 arch_report_meminfo(m);
172
173 return 0;
174#undef K
175}
176
177static int meminfo_proc_open(struct inode *inode, struct file *file)
178{
179 return single_open(file, meminfo_proc_show, NULL);
180}
181
182static const struct file_operations meminfo_proc_fops = {
183 .open = meminfo_proc_open,
184 .read = seq_read,
185 .llseek = seq_lseek,
186 .release = single_release,
187};
188
189static int __init proc_meminfo_init(void)
190{
191 proc_create("meminfo", 0, NULL, &meminfo_proc_fops);
192 return 0;
193}
194module_init(proc_meminfo_init);
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);