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/percpu.h>
10#include <linux/quicklist.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#include <asm/page.h>
17#include <asm/pgtable.h>
18#include "internal.h"
19
20void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
21{
22}
23
24static int meminfo_proc_show(struct seq_file *m, void *v)
25{
26 struct sysinfo i;
27 unsigned long committed;
28 struct vmalloc_info vmi;
29 long cached;
30 long available;
31 unsigned long pages[NR_LRU_LISTS];
32 int lru;
33
34
35
36
37#define K(x) ((x) << (PAGE_SHIFT - 10))
38 si_meminfo(&i);
39 si_swapinfo(&i);
40 committed = percpu_counter_read_positive(&vm_committed_as);
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 available = si_mem_available();
53
54
55
56
57 seq_printf(m,
58 "MemTotal: %8lu kB\n"
59 "MemFree: %8lu kB\n"
60 "MemAvailable: %8lu kB\n"
61 "Buffers: %8lu kB\n"
62 "Cached: %8lu kB\n"
63 "SwapCached: %8lu kB\n"
64 "Active: %8lu kB\n"
65 "Inactive: %8lu kB\n"
66 "Active(anon): %8lu kB\n"
67 "Inactive(anon): %8lu kB\n"
68 "Active(file): %8lu kB\n"
69 "Inactive(file): %8lu kB\n"
70 "Unevictable: %8lu kB\n"
71 "Mlocked: %8lu kB\n"
72#ifdef CONFIG_HIGHMEM
73 "HighTotal: %8lu kB\n"
74 "HighFree: %8lu kB\n"
75 "LowTotal: %8lu kB\n"
76 "LowFree: %8lu kB\n"
77#endif
78#ifndef CONFIG_MMU
79 "MmapCopy: %8lu kB\n"
80#endif
81 "SwapTotal: %8lu kB\n"
82 "SwapFree: %8lu kB\n"
83 "Dirty: %8lu kB\n"
84 "Writeback: %8lu kB\n"
85 "AnonPages: %8lu kB\n"
86 "Mapped: %8lu kB\n"
87 "Shmem: %8lu kB\n"
88 "Slab: %8lu kB\n"
89 "SReclaimable: %8lu kB\n"
90 "SUnreclaim: %8lu kB\n"
91 "KernelStack: %8lu kB\n"
92 "PageTables: %8lu kB\n"
93#ifdef CONFIG_QUICKLIST
94 "Quicklists: %8lu kB\n"
95#endif
96 "NFS_Unstable: %8lu kB\n"
97 "Bounce: %8lu kB\n"
98 "WritebackTmp: %8lu kB\n"
99 "CommitLimit: %8lu kB\n"
100 "Committed_AS: %8lu kB\n"
101 "VmallocTotal: %8lu kB\n"
102 "VmallocUsed: %8lu kB\n"
103 "VmallocChunk: %8lu kB\n"
104 "Percpu: %8lu kB\n"
105#ifdef CONFIG_MEMORY_FAILURE
106 "HardwareCorrupted: %5lu kB\n"
107#endif
108#ifdef CONFIG_TRANSPARENT_HUGEPAGE
109 "AnonHugePages: %8lu kB\n"
110#endif
111#ifdef CONFIG_CMA
112 "CmaTotal: %8lu kB\n"
113 "CmaFree: %8lu kB\n"
114#endif
115 ,
116 K(i.totalram),
117 K(i.freeram),
118 K(available),
119 K(i.bufferram),
120 K(cached),
121 K(total_swapcache_pages()),
122 K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]),
123 K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]),
124 K(pages[LRU_ACTIVE_ANON]),
125 K(pages[LRU_INACTIVE_ANON]),
126 K(pages[LRU_ACTIVE_FILE]),
127 K(pages[LRU_INACTIVE_FILE]),
128 K(pages[LRU_UNEVICTABLE]),
129 K(global_page_state(NR_MLOCK)),
130#ifdef CONFIG_HIGHMEM
131 K(i.totalhigh),
132 K(i.freehigh),
133 K(i.totalram-i.totalhigh),
134 K(i.freeram-i.freehigh),
135#endif
136#ifndef CONFIG_MMU
137 K((unsigned long) atomic_long_read(&mmap_pages_allocated)),
138#endif
139 K(i.totalswap),
140 K(i.freeswap),
141 K(global_page_state(NR_FILE_DIRTY)),
142 K(global_page_state(NR_WRITEBACK)),
143#ifdef CONFIG_TRANSPARENT_HUGEPAGE
144 K(global_page_state(NR_ANON_PAGES)
145 + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
146 HPAGE_PMD_NR),
147#else
148 K(global_page_state(NR_ANON_PAGES)),
149#endif
150 K(global_page_state(NR_FILE_MAPPED)),
151 K(global_page_state(NR_SHMEM)),
152 K(global_page_state(NR_SLAB_RECLAIMABLE) +
153 global_page_state(NR_SLAB_UNRECLAIMABLE)),
154 K(global_page_state(NR_SLAB_RECLAIMABLE)),
155 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
156 global_page_state(NR_KERNEL_STACK) * THREAD_SIZE / 1024,
157 K(global_page_state(NR_PAGETABLE)),
158#ifdef CONFIG_QUICKLIST
159 K(quicklist_total_size()),
160#endif
161 K(global_page_state(NR_UNSTABLE_NFS)),
162 K(global_page_state(NR_BOUNCE)),
163 K(global_page_state(NR_WRITEBACK_TEMP)),
164 K(vm_commit_limit()),
165 K(committed),
166 (unsigned long)VMALLOC_TOTAL >> 10,
167 vmi.used >> 10,
168 vmi.largest_chunk >> 10,
169 K(pcpu_nr_pages())
170#ifdef CONFIG_MEMORY_FAILURE
171 , atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
172#endif
173#ifdef CONFIG_TRANSPARENT_HUGEPAGE
174 , K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
175 HPAGE_PMD_NR)
176#endif
177#ifdef CONFIG_CMA
178 , K(totalcma_pages)
179 , K(global_page_state(NR_FREE_CMA_PAGES))
180#endif
181 );
182
183 hugetlb_report_meminfo(m);
184
185 arch_report_meminfo(m);
186
187 return 0;
188#undef K
189}
190
191static int meminfo_proc_open(struct inode *inode, struct file *file)
192{
193 return single_open(file, meminfo_proc_show, NULL);
194}
195
196static const struct file_operations meminfo_proc_fops = {
197 .open = meminfo_proc_open,
198 .read = seq_read,
199 .llseek = seq_lseek,
200 .release = single_release,
201};
202
203static int __init proc_meminfo_init(void)
204{
205 proc_create("meminfo", 0, NULL, &meminfo_proc_fops);
206 return 0;
207}
208module_init(proc_meminfo_init);
209
