highmem_32.c 839 B

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. #include <linux/highmem.h>
  3. #include <linux/export.h>
  4. #include <linux/swap.h> /* for totalram_pages */
  5. #include <linux/memblock.h>
  6. void __init set_highmem_pages_init(void)
  7. {
  8. struct zone *zone;
  9. int nid;
  10. /*
  11. * Explicitly reset zone->managed_pages because set_highmem_pages_init()
  12. * is invoked before memblock_free_all()
  13. */
  14. reset_all_zones_managed_pages();
  15. for_each_zone(zone) {
  16. unsigned long zone_start_pfn, zone_end_pfn;
  17. if (!is_highmem(zone))
  18. continue;
  19. zone_start_pfn = zone->zone_start_pfn;
  20. zone_end_pfn = zone_start_pfn + zone->spanned_pages;
  21. nid = zone_to_nid(zone);
  22. printk(KERN_INFO "Initializing %s for node %d (%08lx:%08lx)\n",
  23. zone->name, nid, zone_start_pfn, zone_end_pfn);
  24. add_highpages_with_active_regions(nid, zone_start_pfn,
  25. zone_end_pfn);
  26. }
  27. }