show_mem.c 1.27 KB
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/*
 * 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/quicklist.h>
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#include <linux/cma.h>
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void show_mem(unsigned int filter, nodemask_t *nodemask)
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{
	pg_data_t *pgdat;
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	unsigned long total = 0, reserved = 0, highmem = 0;
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	printk("Mem-Info:\n");
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	show_free_areas(filter, nodemask);
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	for_each_online_pgdat(pgdat) {
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		unsigned long flags;
		int zoneid;
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		pgdat_resize_lock(pgdat, &flags);
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		for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
			struct zone *zone = &pgdat->node_zones[zoneid];
			if (!populated_zone(zone))
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				continue;

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			total += zone->present_pages;
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			reserved += zone->present_pages - zone->managed_pages;
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			if (is_highmem_idx(zoneid))
				highmem += zone->present_pages;
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		}
		pgdat_resize_unlock(pgdat, &flags);
	}

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	printk("%lu pages RAM\n", total);
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	printk("%lu pages HighMem/MovableOnly\n", highmem);
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	printk("%lu pages reserved\n", reserved);
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#ifdef CONFIG_CMA
	printk("%lu pages cma reserved\n", totalcma_pages);
#endif
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#ifdef CONFIG_QUICKLIST
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	printk("%lu pages in pagetable cache\n",
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		quicklist_total_size());
#endif
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#ifdef CONFIG_MEMORY_FAILURE
	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
#endif
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}