blob: 8a428498d6b21f08c8c26ef184ff9f4332b5cdd0 [file] [log] [blame]
Alexey Dobriyane1759c22008-10-15 23:50:22 +04001#include <linux/fs.h>
Alexey Dobriyane1759c22008-10-15 23:50:22 +04002#include <linux/init.h>
3#include <linux/kernel.h>
4#include <linux/mm.h>
Kirill A. Shutemovcb900f42013-11-14 14:31:02 -08005#include <linux/hugetlb.h>
Alexey Dobriyane1759c22008-10-15 23:50:22 +04006#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>
Arun Sharma600634972011-07-26 16:09:06 -070013#include <linux/atomic.h>
Joonsoo Kimdb3808c2013-04-29 15:07:28 -070014#include <linux/vmalloc.h>
Pintu Kumar47f8f922014-12-18 16:17:18 -080015#ifdef CONFIG_CMA
16#include <linux/cma.h>
17#endif
Alexey Dobriyane1759c22008-10-15 23:50:22 +040018#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
Joe Perchese16e2d82016-10-07 17:02:23 -070026static 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
Alexey Dobriyane1759c22008-10-15 23:50:22 +040045static int meminfo_proc_show(struct seq_file *m, void *v)
46{
47 struct sysinfo i;
48 unsigned long committed;
Alexey Dobriyane1759c22008-10-15 23:50:22 +040049 long cached;
Rik van Riel34e431b2014-01-21 15:49:05 -080050 long available;
Alexey Dobriyane1759c22008-10-15 23:50:22 +040051 unsigned long pages[NR_LRU_LISTS];
52 int lru;
53
Alexey Dobriyane1759c22008-10-15 23:50:22 +040054 si_meminfo(&i);
55 si_swapinfo(&i);
KOSAKI Motohiro00a62ce2009-04-30 15:08:51 -070056 committed = percpu_counter_read_positive(&vm_committed_as);
Alexey Dobriyane1759c22008-10-15 23:50:22 +040057
Mel Gorman11fb9982016-07-28 15:46:20 -070058 cached = global_node_page_state(NR_FILE_PAGES) -
Shaohua Li33806f02013-02-22 16:34:37 -080059 total_swapcache_pages() - i.bufferram;
Alexey Dobriyane1759c22008-10-15 23:50:22 +040060 if (cached < 0)
61 cached = 0;
62
Alexey Dobriyane1759c22008-10-15 23:50:22 +040063 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
Mel Gorman2f95ff92016-08-11 15:32:57 -070064 pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
Alexey Dobriyane1759c22008-10-15 23:50:22 +040065
Igor Redkod02bd272016-03-17 14:19:05 -070066 available = si_mem_available();
Rik van Riel34e431b2014-01-21 15:49:05 -080067
Joe Perchese16e2d82016-10-07 17:02:23 -070068 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
Alexey Dobriyane1759c22008-10-15 23:50:22 +040085#ifdef CONFIG_HIGHMEM
Joe Perchese16e2d82016-10-07 17:02:23 -070086 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);
Alexey Dobriyane1759c22008-10-15 23:50:22 +040090#endif
Joe Perchese16e2d82016-10-07 17:02:23 -070091
David Howells8feae132009-01-08 12:04:47 +000092#ifndef CONFIG_MMU
Joe Perchese16e2d82016-10-07 17:02:23 -070093 show_val_kb(m, "MmapCopy: ",
94 (unsigned long)atomic_long_read(&mmap_pages_allocated));
David Howells8feae132009-01-08 12:04:47 +000095#endif
Joe Perchese16e2d82016-10-07 17:02:23 -070096
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));
Alexey Dobriyane1759c22008-10-15 23:50:22 +0400120#ifdef CONFIG_QUICKLIST
Joe Perchese16e2d82016-10-07 17:02:23 -0700121 show_val_kb(m, "Quicklists: ", quicklist_total_size());
Alexey Dobriyane1759c22008-10-15 23:50:22 +0400122#endif
Joe Perchese16e2d82016-10-07 17:02:23 -0700123
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
Andi Kleen6a460792009-09-16 11:50:15 +0200137#ifdef CONFIG_MEMORY_FAILURE
Joe Perchese16e2d82016-10-07 17:02:23 -0700138 seq_printf(m, "HardwareCorrupted: %5lu kB\n",
139 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
Andi Kleen6a460792009-09-16 11:50:15 +0200140#endif
Joe Perchese16e2d82016-10-07 17:02:23 -0700141
Andrea Arcangeli79134172011-01-13 15:46:58 -0800142#ifdef CONFIG_TRANSPARENT_HUGEPAGE
Joe Perchese16e2d82016-10-07 17:02:23 -0700143 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);
Andrea Arcangeli79134172011-01-13 15:46:58 -0800149#endif
Joe Perchese16e2d82016-10-07 17:02:23 -0700150
Pintu Kumar47f8f922014-12-18 16:17:18 -0800151#ifdef CONFIG_CMA
Joe Perchese16e2d82016-10-07 17:02:23 -0700152 show_val_kb(m, "CmaTotal: ", totalcma_pages);
153 show_val_kb(m, "CmaFree: ",
154 global_page_state(NR_FREE_CMA_PAGES));
Pintu Kumar47f8f922014-12-18 16:17:18 -0800155#endif
Alexey Dobriyane1759c22008-10-15 23:50:22 +0400156
157 hugetlb_report_meminfo(m);
158
159 arch_report_meminfo(m);
160
161 return 0;
Alexey Dobriyane1759c22008-10-15 23:50:22 +0400162}
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}
Paul Gortmakerabaf3782014-01-23 15:55:45 -0800181fs_initcall(proc_meminfo_init);