LXR linux/lib/show

   1/*
   2 * Generic show_mem() implementation
   3 *
   4 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
   5 * All code subject to the GPL version 2.
   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                unsigned long flags;
  22                int zoneid;
  23
  24                pgdat_resize_lock(pgdat, &flags);
  25                for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
  26                        struct zone *zone = &pgdat->node_zones[zoneid];
  27                        if (!populated_zone(zone))
  28                                continue;
  29
  30                        total += zone->present_pages;
  31                        reserved += zone->present_pages - zone->managed_pages;
  32
  33                        if (is_highmem_idx(zoneid))
  34                                highmem += zone->present_pages;
  35                }
  36                pgdat_resize_unlock(pgdat, &flags);
  37        }
  38
  39        printk("%lu pages RAM\n", total);
  40        printk("%lu pages HighMem/MovableOnly\n", highmem);
  41        printk("%lu pages reserved\n", reserved);
  42#ifdef CONFIG_CMA
  43        printk("%lu pages cma reserved\n", totalcma_pages);
  44#endif
  45#ifdef CONFIG_QUICKLIST
  46        printk("%lu pages in pagetable cache\n",
  47                quicklist_total_size());
  48#endif
  49#ifdef CONFIG_MEMORY_FAILURE
  50        printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
  51#endif
  52}
  53