LXR linux/lib/show

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Generic show_mem() implementation
   4 *
   5 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
   6 */
   7
   8#include <linux/mm.h>
   9#include <linux/quicklist.h>
  10#include <linux/cma.h>
  11
  12void show_mem(unsigned int filter, nodemask_t *nodemask)
  13{
  14        pg_data_t *pgdat;
  15        unsigned long total = 0, reserved = 0, highmem = 0;
  16
  17        printk("Mem-Info:\n");
  18        show_free_areas(filter, nodemask);
  19
  20        for_each_online_pgdat(pgdat) {
  21                int zoneid;
  22
  23                for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
  24                        struct zone *zone = &pgdat->node_zones[zoneid];
  25                        if (!populated_zone(zone))
  26                                continue;
  27
  28                        total += zone->present_pages;
  29                        reserved += zone->present_pages - zone_managed_pages(zone);
  30
  31                        if (is_highmem_idx(zoneid))
  32                                highmem += zone->present_pages;
  33                }
  34        }
  35
  36        printk("%lu pages RAM\n", total);
  37        printk("%lu pages HighMem/MovableOnly\n", highmem);
  38        printk("%lu pages reserved\n", reserved);
  39#ifdef CONFIG_CMA
  40        printk("%lu pages cma reserved\n", totalcma_pages);
  41#endif
  42#ifdef CONFIG_QUICKLIST
  43        printk("%lu pages in pagetable cache\n",
  44                quicklist_total_size());
  45#endif
  46#ifdef CONFIG_MEMORY_FAILURE
  47        printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
  48#endif
  49}
  50