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/cma.h>
  10
  11void show_mem(unsigned int filter, nodemask_t *nodemask)
  12{
  13        pg_data_t *pgdat;
  14        unsigned long total = 0, reserved = 0, highmem = 0;
  15
  16        printk("Mem-Info:\n");
  17        show_free_areas(filter, nodemask);
  18
  19        for_each_online_pgdat(pgdat) {
  20                int zoneid;
  21
  22                for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
  23                        struct zone *zone = &pgdat->node_zones[zoneid];
  24                        if (!populated_zone(zone))
  25                                continue;
  26
  27                        total += zone->present_pages;
  28                        reserved += zone->present_pages - zone_managed_pages(zone);
  29
  30                        if (is_highmem_idx(zoneid))
  31                                highmem += zone->present_pages;
  32                }
  33        }
  34
  35        printk("%lu pages RAM\n", total);
  36        printk("%lu pages HighMem/MovableOnly\n", highmem);
  37        printk("%lu pages reserved\n", reserved);
  38#ifdef CONFIG_CMA
  39        printk("%lu pages cma reserved\n", totalcma_pages);
  40#endif
  41#ifdef CONFIG_MEMORY_FAILURE
  42        printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
  43#endif
  44}
  45