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pgtable.c

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/swap.h>

void show_mem(void)
{
#ifndef CONFIG_NEED_MULTIPLE_NODES  /* XXX(hch): later.. */
      int pfn, total = 0, reserved = 0;
      int shared = 0, cached = 0;
      int highmem = 0;
      struct page *page;

      printk("Mem-info:\n");
      show_free_areas();
      printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
      pfn = max_mapnr;
      while (pfn-- > 0) {
            if (!pfn_valid(pfn))
                  continue;
            page = pfn_to_page(pfn);
            total++;
            if (PageHighMem(page))
                  highmem++;
            if (PageReserved(page))
                  reserved++;
            else if (PageSwapCache(page))
                  cached++;
            else if (page_count(page))
                  shared += page_count(page) - 1;
      }
      printk("%d pages of RAM\n", total);
      printk("%d pages of HIGHMEM\n", highmem);
      printk("%d reserved pages\n", reserved);
      printk("%d pages shared\n", shared);
      printk("%d pages swap cached\n", cached);
#endif
}

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