/*
   * Generic show_mem() implementation
   *
   * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
   * All code subject to the GPL version 2.
   */
  
  #include <linux/mm.h>
  #include <linux/nmi.h>
  #include <linux/quicklist.h>

  void show_mem(unsigned int filter)

  {
  	pg_data_t *pgdat;
  	unsigned long total = 0, reserved = 0, shared = 0,
  		nonshared = 0, highmem = 0;

  	printk("Mem-Info:
  ");

  	show_free_areas(filter);

  
  	for_each_online_pgdat(pgdat) {
  		unsigned long i, flags;
  
  		pgdat_resize_lock(pgdat, &flags);
  		for (i = 0; i < pgdat->node_spanned_pages; i++) {
  			struct page *page;
  			unsigned long pfn = pgdat->node_start_pfn + i;
  
  			if (unlikely(!(i % MAX_ORDER_NR_PAGES)))
  				touch_nmi_watchdog();
  
  			if (!pfn_valid(pfn))
  				continue;
  
  			page = pfn_to_page(pfn);
  
  			if (PageHighMem(page))
  				highmem++;
  
  			if (PageReserved(page))
  				reserved++;
  			else if (page_count(page) == 1)
  				nonshared++;
  			else if (page_count(page) > 1)
  				shared += page_count(page) - 1;
  
  			total++;
  		}
  		pgdat_resize_unlock(pgdat, &flags);
  	}

  	printk("%lu pages RAM
  ", total);

  #ifdef CONFIG_HIGHMEM

  	printk("%lu pages HighMem
  ", highmem);

  #endif

  	printk("%lu pages reserved
  ", reserved);
  	printk("%lu pages shared
  ", shared);
  	printk("%lu pages non-shared
  ", nonshared);

  #ifdef CONFIG_QUICKLIST

  	printk("%lu pages in pagetable cache
  ",

  		quicklist_total_size());
  #endif
  }