2 #include <linux/hugetlb.h>
3 #include <linux/init.h>
4 #include <linux/kernel.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 <asm/atomic.h>
15 #include <asm/pgtable.h>
18 void __attribute__((weak
)) arch_report_meminfo(struct seq_file
*m
)
22 static int meminfo_proc_show(struct seq_file
*m
, void *v
)
25 unsigned long committed
;
26 unsigned long allowed
;
27 struct vmalloc_info vmi
;
29 unsigned long pages
[NR_LRU_LISTS
];
33 * display in kilobytes.
35 #define K(x) ((x) << (PAGE_SHIFT - 10))
38 committed
= percpu_counter_read_positive(&vm_committed_as
);
39 allowed
= ((totalram_pages
- hugetlb_total_pages())
40 * sysctl_overcommit_ratio
/ 100) + total_swap_pages
;
42 cached
= global_page_state(NR_FILE_PAGES
) -
43 total_swapcache_pages
- i
.bufferram
;
47 get_vmalloc_info(&vmi
);
49 for (lru
= LRU_BASE
; lru
< NR_LRU_LISTS
; lru
++)
50 pages
[lru
] = global_page_state(NR_LRU_BASE
+ lru
);
53 * Tagged format, for easy grepping and expansion.
60 "SwapCached: %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"
70 "HighTotal: %8lu kB\n"
78 "SwapTotal: %8lu kB\n"
81 "Writeback: %8lu kB\n"
82 "AnonPages: %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"
93 "NFS_Unstable: %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: %8lu kB\n"
109 K(total_swapcache_pages
),
110 K(pages
[LRU_ACTIVE_ANON
] + pages
[LRU_ACTIVE_FILE
]),
111 K(pages
[LRU_INACTIVE_ANON
] + pages
[LRU_INACTIVE_FILE
]),
112 K(pages
[LRU_ACTIVE_ANON
]),
113 K(pages
[LRU_INACTIVE_ANON
]),
114 K(pages
[LRU_ACTIVE_FILE
]),
115 K(pages
[LRU_INACTIVE_FILE
]),
116 K(pages
[LRU_UNEVICTABLE
]),
117 K(global_page_state(NR_MLOCK
)),
118 #ifdef CONFIG_HIGHMEM
121 K(i
.totalram
-i
.totalhigh
),
122 K(i
.freeram
-i
.freehigh
),
125 K((unsigned long) atomic_long_read(&mmap_pages_allocated
)),
129 K(global_page_state(NR_FILE_DIRTY
)),
130 K(global_page_state(NR_WRITEBACK
)),
131 K(global_page_state(NR_ANON_PAGES
)),
132 K(global_page_state(NR_FILE_MAPPED
)),
133 K(global_page_state(NR_SHMEM
)),
134 K(global_page_state(NR_SLAB_RECLAIMABLE
) +
135 global_page_state(NR_SLAB_UNRECLAIMABLE
)),
136 K(global_page_state(NR_SLAB_RECLAIMABLE
)),
137 K(global_page_state(NR_SLAB_UNRECLAIMABLE
)),
138 global_page_state(NR_KERNEL_STACK
) * THREAD_SIZE
/ 1024,
139 K(global_page_state(NR_PAGETABLE
)),
140 #ifdef CONFIG_QUICKLIST
141 K(quicklist_total_size()),
143 K(global_page_state(NR_UNSTABLE_NFS
)),
144 K(global_page_state(NR_BOUNCE
)),
145 K(global_page_state(NR_WRITEBACK_TEMP
)),
148 (unsigned long)VMALLOC_TOTAL
>> 10,
150 vmi
.largest_chunk
>> 10
151 #ifdef CONFIG_MEMORY_FAILURE
152 ,atomic_long_read(&mce_bad_pages
) << (PAGE_SHIFT
- 10)
156 hugetlb_report_meminfo(m
);
158 arch_report_meminfo(m
);
164 static int meminfo_proc_open(struct inode
*inode
, struct file
*file
)
166 return single_open(file
, meminfo_proc_show
, NULL
);
169 static const struct file_operations meminfo_proc_fops
= {
170 .open
= meminfo_proc_open
,
173 .release
= single_release
,
176 static int __init
proc_meminfo_init(void)
178 proc_create("meminfo", 0, NULL
, &meminfo_proc_fops
);
181 module_init(proc_meminfo_init
);