diff options
Diffstat (limited to 'fs/proc/meminfo.c')
| -rw-r--r-- | fs/proc/meminfo.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c new file mode 100644 index 000000000..edda89871 --- /dev/null +++ b/fs/proc/meminfo.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/fs.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/hugetlb.h> +#include <linux/mman.h> +#include <linux/mmzone.h> +#include <linux/proc_fs.h> +#include <linux/percpu.h> +#include <linux/quicklist.h> +#include <linux/seq_file.h> +#include <linux/swap.h> +#include <linux/vmstat.h> +#include <linux/atomic.h> +#include <linux/vmalloc.h> +#ifdef CONFIG_CMA +#include <linux/cma.h> +#endif +#include <asm/page.h> +#include <asm/pgtable.h> +#include "internal.h" + +void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) +{ +} + +static void show_val_kb(struct seq_file *m, const char *s, unsigned long num) +{ + seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8); + seq_write(m, " kB\n", 4); +} + +static int meminfo_proc_show(struct seq_file *m, void *v) +{ + struct sysinfo i; + unsigned long committed; + long cached; + long available; + unsigned long pages[NR_LRU_LISTS]; + int lru; + + si_meminfo(&i); + si_swapinfo(&i); + committed = percpu_counter_read_positive(&vm_committed_as); + + cached = global_node_page_state(NR_FILE_PAGES) - + total_swapcache_pages() - i.bufferram; + if (cached < 0) + cached = 0; + + for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) + pages[lru] = global_node_page_state(NR_LRU_BASE + lru); + + available = si_mem_available(); + + show_val_kb(m, "MemTotal: ", i.totalram); + show_val_kb(m, "MemFree: ", i.freeram); + show_val_kb(m, "MemAvailable: ", available); + show_val_kb(m, "Buffers: ", i.bufferram); + show_val_kb(m, "Cached: ", cached); + show_val_kb(m, "SwapCached: ", total_swapcache_pages()); + show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] + + pages[LRU_ACTIVE_FILE]); + show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + + pages[LRU_INACTIVE_FILE]); + show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]); + show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); + show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); + show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); + show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); + show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); + +#ifdef CONFIG_HIGHMEM + show_val_kb(m, "HighTotal: ", i.totalhigh); + show_val_kb(m, "HighFree: ", i.freehigh); + show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); + show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); +#endif + +#ifndef CONFIG_MMU + show_val_kb(m, "MmapCopy: ", + (unsigned long)atomic_long_read(&mmap_pages_allocated)); +#endif + + show_val_kb(m, "SwapTotal: ", i.totalswap); + show_val_kb(m, "SwapFree: ", i.freeswap); + show_val_kb(m, "Dirty: ", + global_node_page_state(NR_FILE_DIRTY)); + show_val_kb(m, "Writeback: ", + global_node_page_state(NR_WRITEBACK)); + show_val_kb(m, "AnonPages: ", + global_node_page_state(NR_ANON_MAPPED)); + show_val_kb(m, "Mapped: ", + global_node_page_state(NR_FILE_MAPPED)); + show_val_kb(m, "Shmem: ", i.sharedram); + show_val_kb(m, "Slab: ", + global_node_page_state(NR_SLAB_RECLAIMABLE) + + global_node_page_state(NR_SLAB_UNRECLAIMABLE)); + + show_val_kb(m, "SReclaimable: ", + global_node_page_state(NR_SLAB_RECLAIMABLE)); + show_val_kb(m, "SUnreclaim: ", + global_node_page_state(NR_SLAB_UNRECLAIMABLE)); + seq_printf(m, "KernelStack: %8lu kB\n", + global_zone_page_state(NR_KERNEL_STACK_KB)); + show_val_kb(m, "PageTables: ", + global_zone_page_state(NR_PAGETABLE)); +#ifdef CONFIG_QUICKLIST + show_val_kb(m, "Quicklists: ", quicklist_total_size()); +#endif + + show_val_kb(m, "NFS_Unstable: ", + global_node_page_state(NR_UNSTABLE_NFS)); + show_val_kb(m, "Bounce: ", + global_zone_page_state(NR_BOUNCE)); + show_val_kb(m, "WritebackTmp: ", + global_node_page_state(NR_WRITEBACK_TEMP)); + show_val_kb(m, "CommitLimit: ", vm_commit_limit()); + show_val_kb(m, "Committed_AS: ", committed); + seq_printf(m, "VmallocTotal: %8lu kB\n", + (unsigned long)VMALLOC_TOTAL >> 10); + show_val_kb(m, "VmallocUsed: ", 0ul); + show_val_kb(m, "VmallocChunk: ", 0ul); + show_val_kb(m, "Percpu: ", pcpu_nr_pages()); + +#ifdef CONFIG_MEMORY_FAILURE + seq_printf(m, "HardwareCorrupted: %5lu kB\n", + atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)); +#endif + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + show_val_kb(m, "AnonHugePages: ", + global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR); + show_val_kb(m, "ShmemHugePages: ", + global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); + show_val_kb(m, "ShmemPmdMapped: ", + global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR); +#endif + +#ifdef CONFIG_CMA + show_val_kb(m, "CmaTotal: ", totalcma_pages); + show_val_kb(m, "CmaFree: ", + global_zone_page_state(NR_FREE_CMA_PAGES)); +#endif + + hugetlb_report_meminfo(m); + + arch_report_meminfo(m); + + return 0; +} + +static int __init proc_meminfo_init(void) +{ + proc_create_single("meminfo", 0, NULL, meminfo_proc_show); + return 0; +} +fs_initcall(proc_meminfo_init); |