Line data    Source code

       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             : 
      11           0 : void __show_mem(unsigned int filter, nodemask_t *nodemask, int max_zone_idx)
      12             : {
      13             :         pg_data_t *pgdat;
      14           0 :         unsigned long total = 0, reserved = 0, highmem = 0;
      15             : 
      16           0 :         printk("Mem-Info:\n");
      17           0 :         __show_free_areas(filter, nodemask, max_zone_idx);
      18             : 
      19           0 :         for_each_online_pgdat(pgdat) {
      20             :                 int zoneid;
      21             : 
      22           0 :                 for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
      23           0 :                         struct zone *zone = &pgdat->node_zones[zoneid];
      24           0 :                         if (!populated_zone(zone))
      25           0 :                                 continue;
      26             : 
      27           0 :                         total += zone->present_pages;
      28           0 :                         reserved += zone->present_pages - zone_managed_pages(zone);
      29             : 
      30           0 :                         if (is_highmem_idx(zoneid))
      31             :                                 highmem += zone->present_pages;
      32             :                 }
      33             :         }
      34             : 
      35           0 :         printk("%lu pages RAM\n", total);
      36           0 :         printk("%lu pages HighMem/MovableOnly\n", highmem);
      37           0 :         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           0 : }