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1// SPDX-License-Identifier: GPL-2.02#include <linux/fs.h>3#include <linux/init.h>4#include <linux/kernel.h>5#include <linux/mm.h>6#include <linux/hugetlb.h>7#include <linux/mman.h>8#include <linux/mmzone.h>9#include <linux/memblock.h>10#include <linux/proc_fs.h>11#include <linux/percpu.h>12#include <linux/seq_file.h>13#include <linux/swap.h>14#include <linux/vmstat.h>15#include <linux/atomic.h>16#include <linux/vmalloc.h>17#ifdef CONFIG_CMA18#include <linux/cma.h>19#endif20#include <linux/zswap.h>21#include <asm/page.h>22#include "internal.h"23 24void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)25{26}27 28static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)29{30 seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);31 seq_write(m, " kB\n", 4);32}33 34static int meminfo_proc_show(struct seq_file *m, void *v)35{36 struct sysinfo i;37 unsigned long committed;38 long cached;39 long available;40 unsigned long pages[NR_LRU_LISTS];41 unsigned long sreclaimable, sunreclaim;42 int lru;43 44 si_meminfo(&i);45 si_swapinfo(&i);46 committed = vm_memory_committed();47 48 cached = global_node_page_state(NR_FILE_PAGES) -49 total_swapcache_pages() - i.bufferram;50 if (cached < 0)51 cached = 0;52 53 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)54 pages[lru] = global_node_page_state(NR_LRU_BASE + lru);55 56 available = si_mem_available();57 sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);58 sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);59 60 show_val_kb(m, "MemTotal: ", i.totalram);61 show_val_kb(m, "MemFree: ", i.freeram);62 show_val_kb(m, "MemAvailable: ", available);63 show_val_kb(m, "Buffers: ", i.bufferram);64 show_val_kb(m, "Cached: ", cached);65 show_val_kb(m, "SwapCached: ", total_swapcache_pages());66 show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] +67 pages[LRU_ACTIVE_FILE]);68 show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] +69 pages[LRU_INACTIVE_FILE]);70 show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]);71 show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);72 show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]);73 show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);74 show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]);75 show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK));76 77#ifdef CONFIG_HIGHMEM78 show_val_kb(m, "HighTotal: ", i.totalhigh);79 show_val_kb(m, "HighFree: ", i.freehigh);80 show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh);81 show_val_kb(m, "LowFree: ", i.freeram - i.freehigh);82#endif83 84#ifndef CONFIG_MMU85 show_val_kb(m, "MmapCopy: ",86 (unsigned long)atomic_long_read(&mmap_pages_allocated));87#endif88 89 show_val_kb(m, "SwapTotal: ", i.totalswap);90 show_val_kb(m, "SwapFree: ", i.freeswap);91#ifdef CONFIG_ZSWAP92 show_val_kb(m, "Zswap: ", zswap_total_pages());93 seq_printf(m, "Zswapped: %8lu kB\n",94 (unsigned long)atomic_read(&zswap_stored_pages) <<95 (PAGE_SHIFT - 10));96#endif97 show_val_kb(m, "Dirty: ",98 global_node_page_state(NR_FILE_DIRTY));99 show_val_kb(m, "Writeback: ",100 global_node_page_state(NR_WRITEBACK));101 show_val_kb(m, "AnonPages: ",102 global_node_page_state(NR_ANON_MAPPED));103 show_val_kb(m, "Mapped: ",104 global_node_page_state(NR_FILE_MAPPED));105 show_val_kb(m, "Shmem: ", i.sharedram);106 show_val_kb(m, "KReclaimable: ", sreclaimable +107 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));108 show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);109 show_val_kb(m, "SReclaimable: ", sreclaimable);110 show_val_kb(m, "SUnreclaim: ", sunreclaim);111 seq_printf(m, "KernelStack: %8lu kB\n",112 global_node_page_state(NR_KERNEL_STACK_KB));113#ifdef CONFIG_SHADOW_CALL_STACK114 seq_printf(m, "ShadowCallStack:%8lu kB\n",115 global_node_page_state(NR_KERNEL_SCS_KB));116#endif117 show_val_kb(m, "PageTables: ",118 global_node_page_state(NR_PAGETABLE));119 show_val_kb(m, "SecPageTables: ",120 global_node_page_state(NR_SECONDARY_PAGETABLE));121 122 show_val_kb(m, "NFS_Unstable: ", 0);123 show_val_kb(m, "Bounce: ",124 global_zone_page_state(NR_BOUNCE));125 show_val_kb(m, "WritebackTmp: ",126 global_node_page_state(NR_WRITEBACK_TEMP));127 show_val_kb(m, "CommitLimit: ", vm_commit_limit());128 show_val_kb(m, "Committed_AS: ", committed);129 seq_printf(m, "VmallocTotal: %8lu kB\n",130 (unsigned long)VMALLOC_TOTAL >> 10);131 show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());132 show_val_kb(m, "VmallocChunk: ", 0ul);133 show_val_kb(m, "Percpu: ", pcpu_nr_pages());134 135 memtest_report_meminfo(m);136 137#ifdef CONFIG_MEMORY_FAILURE138 seq_printf(m, "HardwareCorrupted: %5lu kB\n",139 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));140#endif141 142#ifdef CONFIG_TRANSPARENT_HUGEPAGE143 show_val_kb(m, "AnonHugePages: ",144 global_node_page_state(NR_ANON_THPS));145 show_val_kb(m, "ShmemHugePages: ",146 global_node_page_state(NR_SHMEM_THPS));147 show_val_kb(m, "ShmemPmdMapped: ",148 global_node_page_state(NR_SHMEM_PMDMAPPED));149 show_val_kb(m, "FileHugePages: ",150 global_node_page_state(NR_FILE_THPS));151 show_val_kb(m, "FilePmdMapped: ",152 global_node_page_state(NR_FILE_PMDMAPPED));153#endif154 155#ifdef CONFIG_CMA156 show_val_kb(m, "CmaTotal: ", totalcma_pages);157 show_val_kb(m, "CmaFree: ",158 global_zone_page_state(NR_FREE_CMA_PAGES));159#endif160 161#ifdef CONFIG_UNACCEPTED_MEMORY162 show_val_kb(m, "Unaccepted: ",163 global_zone_page_state(NR_UNACCEPTED));164#endif165 166 hugetlb_report_meminfo(m);167 168 arch_report_meminfo(m);169 170 return 0;171}172 173static int __init proc_meminfo_init(void)174{175 struct proc_dir_entry *pde;176 177 pde = proc_create_single("meminfo", 0, NULL, meminfo_proc_show);178 pde_make_permanent(pde);179 return 0;180}181fs_initcall(proc_meminfo_init);182