LXR linux/arch/x86/mm/highmem

   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
   7void __init set_highmem_pages_init(void)
   8{
   9        struct zone *zone;
  10        int nid;
  11
  12        /*
  13         * Explicitly reset zone->managed_pages because set_highmem_pages_init()
  14         * is invoked before memblock_free_all()
  15         */
  16        reset_all_zones_managed_pages();
  17        for_each_zone(zone) {
  18                unsigned long zone_start_pfn, zone_end_pfn;
  19
  20                if (!is_highmem(zone))
  21                        continue;
  22
  23                zone_start_pfn = zone->zone_start_pfn;
  24                zone_end_pfn = zone_start_pfn + zone->spanned_pages;
  25
  26                nid = zone_to_nid(zone);
  27                printk(KERN_INFO "Initializing %s for node %d (%08lx:%08lx)\n",
  28                                zone->name, nid, zone_start_pfn, zone_end_pfn);
  29
  30                add_highpages_with_active_regions(nid, zone_start_pfn,
  31                                 zone_end_pfn);
  32        }
  33}
  34