show_mem.c 1.2 KB

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