0001
0002 #include <linux/fs.h>
0003 #include <linux/init.h>
0004 #include <linux/kernel.h>
0005 #include <linux/mm.h>
0006 #include <linux/hugetlb.h>
0007 #include <linux/mman.h>
0008 #include <linux/mmzone.h>
0009 #include <linux/proc_fs.h>
0010 #include <linux/percpu.h>
0011 #include <linux/seq_file.h>
0012 #include <linux/swap.h>
0013 #include <linux/vmstat.h>
0014 #include <linux/atomic.h>
0015 #include <linux/vmalloc.h>
0016 #ifdef CONFIG_CMA
0017 #include <linux/cma.h>
0018 #endif
0019 #include <asm/page.h>
0020 #include "internal.h"
0021
0022 void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
0023 {
0024 }
0025
0026 static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
0027 {
0028 seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
0029 seq_write(m, " kB\n", 4);
0030 }
0031
0032 static int meminfo_proc_show(struct seq_file *m, void *v)
0033 {
0034 struct sysinfo i;
0035 unsigned long committed;
0036 long cached;
0037 long available;
0038 unsigned long pages[NR_LRU_LISTS];
0039 unsigned long sreclaimable, sunreclaim;
0040 int lru;
0041
0042 si_meminfo(&i);
0043 si_swapinfo(&i);
0044 committed = vm_memory_committed();
0045
0046 cached = global_node_page_state(NR_FILE_PAGES) -
0047 total_swapcache_pages() - i.bufferram;
0048 if (cached < 0)
0049 cached = 0;
0050
0051 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
0052 pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
0053
0054 available = si_mem_available();
0055 sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);
0056 sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);
0057
0058 show_val_kb(m, "MemTotal: ", i.totalram);
0059 show_val_kb(m, "MemFree: ", i.freeram);
0060 show_val_kb(m, "MemAvailable: ", available);
0061 show_val_kb(m, "Buffers: ", i.bufferram);
0062 show_val_kb(m, "Cached: ", cached);
0063 show_val_kb(m, "SwapCached: ", total_swapcache_pages());
0064 show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] +
0065 pages[LRU_ACTIVE_FILE]);
0066 show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] +
0067 pages[LRU_INACTIVE_FILE]);
0068 show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]);
0069 show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);
0070 show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]);
0071 show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
0072 show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]);
0073 show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK));
0074
0075 #ifdef CONFIG_HIGHMEM
0076 show_val_kb(m, "HighTotal: ", i.totalhigh);
0077 show_val_kb(m, "HighFree: ", i.freehigh);
0078 show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh);
0079 show_val_kb(m, "LowFree: ", i.freeram - i.freehigh);
0080 #endif
0081
0082 #ifndef CONFIG_MMU
0083 show_val_kb(m, "MmapCopy: ",
0084 (unsigned long)atomic_long_read(&mmap_pages_allocated));
0085 #endif
0086
0087 show_val_kb(m, "SwapTotal: ", i.totalswap);
0088 show_val_kb(m, "SwapFree: ", i.freeswap);
0089 #ifdef CONFIG_ZSWAP
0090 seq_printf(m, "Zswap: %8lu kB\n",
0091 (unsigned long)(zswap_pool_total_size >> 10));
0092 seq_printf(m, "Zswapped: %8lu kB\n",
0093 (unsigned long)atomic_read(&zswap_stored_pages) <<
0094 (PAGE_SHIFT - 10));
0095 #endif
0096 show_val_kb(m, "Dirty: ",
0097 global_node_page_state(NR_FILE_DIRTY));
0098 show_val_kb(m, "Writeback: ",
0099 global_node_page_state(NR_WRITEBACK));
0100 show_val_kb(m, "AnonPages: ",
0101 global_node_page_state(NR_ANON_MAPPED));
0102 show_val_kb(m, "Mapped: ",
0103 global_node_page_state(NR_FILE_MAPPED));
0104 show_val_kb(m, "Shmem: ", i.sharedram);
0105 show_val_kb(m, "KReclaimable: ", sreclaimable +
0106 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));
0107 show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
0108 show_val_kb(m, "SReclaimable: ", sreclaimable);
0109 show_val_kb(m, "SUnreclaim: ", sunreclaim);
0110 seq_printf(m, "KernelStack: %8lu kB\n",
0111 global_node_page_state(NR_KERNEL_STACK_KB));
0112 #ifdef CONFIG_SHADOW_CALL_STACK
0113 seq_printf(m, "ShadowCallStack:%8lu kB\n",
0114 global_node_page_state(NR_KERNEL_SCS_KB));
0115 #endif
0116 show_val_kb(m, "PageTables: ",
0117 global_node_page_state(NR_PAGETABLE));
0118
0119 show_val_kb(m, "NFS_Unstable: ", 0);
0120 show_val_kb(m, "Bounce: ",
0121 global_zone_page_state(NR_BOUNCE));
0122 show_val_kb(m, "WritebackTmp: ",
0123 global_node_page_state(NR_WRITEBACK_TEMP));
0124 show_val_kb(m, "CommitLimit: ", vm_commit_limit());
0125 show_val_kb(m, "Committed_AS: ", committed);
0126 seq_printf(m, "VmallocTotal: %8lu kB\n",
0127 (unsigned long)VMALLOC_TOTAL >> 10);
0128 show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());
0129 show_val_kb(m, "VmallocChunk: ", 0ul);
0130 show_val_kb(m, "Percpu: ", pcpu_nr_pages());
0131
0132 #ifdef CONFIG_MEMORY_FAILURE
0133 seq_printf(m, "HardwareCorrupted: %5lu kB\n",
0134 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
0135 #endif
0136
0137 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
0138 show_val_kb(m, "AnonHugePages: ",
0139 global_node_page_state(NR_ANON_THPS));
0140 show_val_kb(m, "ShmemHugePages: ",
0141 global_node_page_state(NR_SHMEM_THPS));
0142 show_val_kb(m, "ShmemPmdMapped: ",
0143 global_node_page_state(NR_SHMEM_PMDMAPPED));
0144 show_val_kb(m, "FileHugePages: ",
0145 global_node_page_state(NR_FILE_THPS));
0146 show_val_kb(m, "FilePmdMapped: ",
0147 global_node_page_state(NR_FILE_PMDMAPPED));
0148 #endif
0149
0150 #ifdef CONFIG_CMA
0151 show_val_kb(m, "CmaTotal: ", totalcma_pages);
0152 show_val_kb(m, "CmaFree: ",
0153 global_zone_page_state(NR_FREE_CMA_PAGES));
0154 #endif
0155
0156 hugetlb_report_meminfo(m);
0157
0158 arch_report_meminfo(m);
0159
0160 return 0;
0161 }
0162
0163 static int __init proc_meminfo_init(void)
0164 {
0165 proc_create_single("meminfo", 0, NULL, meminfo_proc_show);
0166 return 0;
0167 }
0168 fs_initcall(proc_meminfo_init);
