Alexey Dobriyan | e1759c2 | 2008-10-15 23:50:22 +0400 | [diff] [blame] | 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 <asm/atomic.h> |
| 14 | #include <asm/page.h> |
| 15 | #include <asm/pgtable.h> |
| 16 | #include "internal.h" |
| 17 | |
| 18 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) |
| 19 | { |
| 20 | } |
| 21 | |
| 22 | static 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 = atomic_long_read(&vm_committed_space); |
| 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 | #ifdef CONFIG_UNEVICTABLE_LRU |
| 68 | "Unevictable: %8lu kB\n" |
| 69 | "Mlocked: %8lu kB\n" |
| 70 | #endif |
| 71 | #ifdef CONFIG_HIGHMEM |
| 72 | "HighTotal: %8lu kB\n" |
| 73 | "HighFree: %8lu kB\n" |
| 74 | "LowTotal: %8lu kB\n" |
| 75 | "LowFree: %8lu kB\n" |
| 76 | #endif |
David Howells | 8feae13 | 2009-01-08 12:04:47 +0000 | [diff] [blame] | 77 | #ifndef CONFIG_MMU |
| 78 | "MmapCopy: %8lu kB\n" |
| 79 | #endif |
Alexey Dobriyan | e1759c2 | 2008-10-15 23:50:22 +0400 | [diff] [blame] | 80 | "SwapTotal: %8lu kB\n" |
| 81 | "SwapFree: %8lu kB\n" |
| 82 | "Dirty: %8lu kB\n" |
| 83 | "Writeback: %8lu kB\n" |
| 84 | "AnonPages: %8lu kB\n" |
| 85 | "Mapped: %8lu kB\n" |
| 86 | "Slab: %8lu kB\n" |
| 87 | "SReclaimable: %8lu kB\n" |
| 88 | "SUnreclaim: %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 | K(i.totalram), |
| 102 | K(i.freeram), |
| 103 | K(i.bufferram), |
| 104 | K(cached), |
| 105 | K(total_swapcache_pages), |
| 106 | K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]), |
| 107 | K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]), |
| 108 | K(pages[LRU_ACTIVE_ANON]), |
| 109 | K(pages[LRU_INACTIVE_ANON]), |
| 110 | K(pages[LRU_ACTIVE_FILE]), |
| 111 | K(pages[LRU_INACTIVE_FILE]), |
| 112 | #ifdef CONFIG_UNEVICTABLE_LRU |
| 113 | K(pages[LRU_UNEVICTABLE]), |
| 114 | K(global_page_state(NR_MLOCK)), |
| 115 | #endif |
| 116 | #ifdef CONFIG_HIGHMEM |
| 117 | K(i.totalhigh), |
| 118 | K(i.freehigh), |
| 119 | K(i.totalram-i.totalhigh), |
| 120 | K(i.freeram-i.freehigh), |
| 121 | #endif |
David Howells | 8feae13 | 2009-01-08 12:04:47 +0000 | [diff] [blame] | 122 | #ifndef CONFIG_MMU |
David Howells | 33e5d769 | 2009-04-02 16:56:32 -0700 | [diff] [blame] | 123 | K((unsigned long) atomic_long_read(&mmap_pages_allocated)), |
David Howells | 8feae13 | 2009-01-08 12:04:47 +0000 | [diff] [blame] | 124 | #endif |
Alexey Dobriyan | e1759c2 | 2008-10-15 23:50:22 +0400 | [diff] [blame] | 125 | K(i.totalswap), |
| 126 | K(i.freeswap), |
| 127 | K(global_page_state(NR_FILE_DIRTY)), |
| 128 | K(global_page_state(NR_WRITEBACK)), |
| 129 | K(global_page_state(NR_ANON_PAGES)), |
| 130 | K(global_page_state(NR_FILE_MAPPED)), |
| 131 | K(global_page_state(NR_SLAB_RECLAIMABLE) + |
| 132 | global_page_state(NR_SLAB_UNRECLAIMABLE)), |
| 133 | K(global_page_state(NR_SLAB_RECLAIMABLE)), |
| 134 | K(global_page_state(NR_SLAB_UNRECLAIMABLE)), |
| 135 | K(global_page_state(NR_PAGETABLE)), |
| 136 | #ifdef CONFIG_QUICKLIST |
| 137 | K(quicklist_total_size()), |
| 138 | #endif |
| 139 | K(global_page_state(NR_UNSTABLE_NFS)), |
| 140 | K(global_page_state(NR_BOUNCE)), |
| 141 | K(global_page_state(NR_WRITEBACK_TEMP)), |
| 142 | K(allowed), |
| 143 | K(committed), |
| 144 | (unsigned long)VMALLOC_TOTAL >> 10, |
| 145 | vmi.used >> 10, |
| 146 | vmi.largest_chunk >> 10 |
| 147 | ); |
| 148 | |
| 149 | hugetlb_report_meminfo(m); |
| 150 | |
| 151 | arch_report_meminfo(m); |
| 152 | |
| 153 | return 0; |
| 154 | #undef K |
| 155 | } |
| 156 | |
| 157 | static int meminfo_proc_open(struct inode *inode, struct file *file) |
| 158 | { |
| 159 | return single_open(file, meminfo_proc_show, NULL); |
| 160 | } |
| 161 | |
| 162 | static const struct file_operations meminfo_proc_fops = { |
| 163 | .open = meminfo_proc_open, |
| 164 | .read = seq_read, |
| 165 | .llseek = seq_lseek, |
| 166 | .release = single_release, |
| 167 | }; |
| 168 | |
| 169 | static int __init proc_meminfo_init(void) |
| 170 | { |
| 171 | proc_create("meminfo", 0, NULL, &meminfo_proc_fops); |
| 172 | return 0; |
| 173 | } |
| 174 | module_init(proc_meminfo_init); |