1// SPDX-License-Identifier: GPL-2.0 2#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/proc_fs.h> 10#include <linux/percpu.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#ifdef CONFIG_CMA 17#include <linux/cma.h> 18#endif 19#ifdef CONFIG_MEM_PURGEABLE 20#include <linux/mm_purgeable.h> 21#endif 22#include <asm/page.h> 23#include "internal.h" 24 25void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) 26{ 27} 28 29static void show_val_kb(struct seq_file *m, const char *s, unsigned long num) 30{ 31 seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8); 32 seq_write(m, " kB\n", 4); 33} 34 35static int meminfo_proc_show(struct seq_file *m, void *v) 36{ 37 struct sysinfo i; 38 unsigned long committed; 39 long cached; 40 long available; 41 unsigned long pages[NR_LRU_LISTS]; 42 unsigned long sreclaimable, sunreclaim; 43 int lru; 44 unsigned long nr_purg_active = 0; 45 unsigned long nr_purg_inactive = 0; 46#ifdef CONFIG_MEM_PURGEABLE 47 unsigned long nr_purg_pined = 0; 48#endif 49 50 si_meminfo(&i); 51 si_swapinfo(&i); 52 committed = vm_memory_committed(); 53 54 cached = global_node_page_state(NR_FILE_PAGES) - 55 total_swapcache_pages() - i.bufferram; 56 if (cached < 0) 57 cached = 0; 58 59 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) 60 pages[lru] = global_node_page_state(NR_LRU_BASE + lru); 61 62#ifdef CONFIG_MEM_PURGEABLE 63 nr_purg_active = pages[LRU_ACTIVE_PURGEABLE]; 64 nr_purg_inactive = pages[LRU_INACTIVE_PURGEABLE]; 65 purg_pages_info(NULL, &nr_purg_pined); 66 nr_purg_pined = min(nr_purg_pined, nr_purg_active + nr_purg_inactive); 67#endif 68 69 available = si_mem_available(); 70 sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B); 71 sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B); 72 73 show_val_kb(m, "MemTotal: ", i.totalram); 74 show_val_kb(m, "MemFree: ", i.freeram); 75 show_val_kb(m, "MemAvailable: ", available); 76 show_val_kb(m, "Buffers: ", i.bufferram); 77 show_val_kb(m, "Cached: ", cached); 78 show_val_kb(m, "SwapCached: ", total_swapcache_pages()); 79 show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] + 80 pages[LRU_ACTIVE_FILE] + 81 nr_purg_active); 82 show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + 83 pages[LRU_INACTIVE_FILE] + 84 nr_purg_inactive); 85 show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]); 86 show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); 87 show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); 88 show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); 89#ifdef CONFIG_MEM_PURGEABLE 90 show_val_kb(m, "Active(purg): ", nr_purg_active); 91 show_val_kb(m, "Inactive(purg): ", nr_purg_inactive); 92 show_val_kb(m, "Pined(purg): ", nr_purg_pined); 93#endif 94 show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); 95 show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); 96 97#ifdef CONFIG_HIGHMEM 98 show_val_kb(m, "HighTotal: ", i.totalhigh); 99 show_val_kb(m, "HighFree: ", i.freehigh); 100 show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); 101 show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); 102#endif 103 104#ifndef CONFIG_MMU 105 show_val_kb(m, "MmapCopy: ", 106 (unsigned long)atomic_long_read(&mmap_pages_allocated)); 107#endif 108 109 show_val_kb(m, "SwapTotal: ", i.totalswap); 110 show_val_kb(m, "SwapFree: ", i.freeswap); 111 show_val_kb(m, "Dirty: ", 112 global_node_page_state(NR_FILE_DIRTY)); 113 show_val_kb(m, "Writeback: ", 114 global_node_page_state(NR_WRITEBACK)); 115 show_val_kb(m, "AnonPages: ", 116 global_node_page_state(NR_ANON_MAPPED)); 117 show_val_kb(m, "Mapped: ", 118 global_node_page_state(NR_FILE_MAPPED)); 119 show_val_kb(m, "Shmem: ", i.sharedram); 120 show_val_kb(m, "KReclaimable: ", sreclaimable + 121 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE)); 122 show_val_kb(m, "Slab: ", sreclaimable + sunreclaim); 123 show_val_kb(m, "SReclaimable: ", sreclaimable); 124 show_val_kb(m, "SUnreclaim: ", sunreclaim); 125 seq_printf(m, "KernelStack: %8lu kB\n", 126 global_node_page_state(NR_KERNEL_STACK_KB)); 127#ifdef CONFIG_SHADOW_CALL_STACK 128 seq_printf(m, "ShadowCallStack:%8lu kB\n", 129 global_node_page_state(NR_KERNEL_SCS_KB)); 130#endif 131 show_val_kb(m, "PageTables: ", 132 global_zone_page_state(NR_PAGETABLE)); 133 134 show_val_kb(m, "NFS_Unstable: ", 0); 135 show_val_kb(m, "Bounce: ", 136 global_zone_page_state(NR_BOUNCE)); 137 show_val_kb(m, "WritebackTmp: ", 138 global_node_page_state(NR_WRITEBACK_TEMP)); 139 show_val_kb(m, "CommitLimit: ", vm_commit_limit()); 140 show_val_kb(m, "Committed_AS: ", committed); 141 seq_printf(m, "VmallocTotal: %8lu kB\n", 142 (unsigned long)VMALLOC_TOTAL >> 10); 143 show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages()); 144 show_val_kb(m, "VmallocChunk: ", 0ul); 145 show_val_kb(m, "Percpu: ", pcpu_nr_pages()); 146 147#ifdef CONFIG_PAGE_TRACING 148 show_val_kb(m, "Skb: ", global_zone_page_state(NR_SKB_PAGES)); 149#endif 150 151#ifdef CONFIG_MEMORY_FAILURE 152 seq_printf(m, "HardwareCorrupted: %5lu kB\n", 153 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)); 154#endif 155 156#ifdef CONFIG_TRANSPARENT_HUGEPAGE 157 show_val_kb(m, "AnonHugePages: ", 158 global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR); 159 show_val_kb(m, "ShmemHugePages: ", 160 global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); 161 show_val_kb(m, "ShmemPmdMapped: ", 162 global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR); 163 show_val_kb(m, "FileHugePages: ", 164 global_node_page_state(NR_FILE_THPS) * HPAGE_PMD_NR); 165 show_val_kb(m, "FilePmdMapped: ", 166 global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR); 167#endif 168 169#ifdef CONFIG_CMA 170 show_val_kb(m, "CmaTotal: ", totalcma_pages); 171 show_val_kb(m, "CmaFree: ", 172 global_zone_page_state(NR_FREE_CMA_PAGES)); 173#endif 174 175#ifdef CONFIG_PAGE_TRACING 176 seq_puts(m, "GLTrack: - kB\n"); 177 show_val_kb(m, "ZspageUsed: ", global_zone_page_state(NR_ZSPAGES)); 178#endif 179 180 hugetlb_report_meminfo(m); 181 182 arch_report_meminfo(m); 183 184 return 0; 185} 186 187static int __init proc_meminfo_init(void) 188{ 189 proc_create_single("meminfo", 0, NULL, meminfo_proc_show); 190 return 0; 191} 192fs_initcall(proc_meminfo_init); 193