show_mem.c
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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>
#include <linux/cma.h>
void show_mem(unsigned int filter, nodemask_t *nodemask)
{
pg_data_t *pgdat;
unsigned long total = 0, reserved = 0, highmem = 0;
printk("Mem-Info:\n");
show_free_areas(filter, nodemask);
for_each_online_pgdat(pgdat) {
unsigned long flags;
int zoneid;
pgdat_resize_lock(pgdat, &flags);
for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
struct zone *zone = &pgdat->node_zones[zoneid];
if (!populated_zone(zone))
continue;
total += zone->present_pages;
reserved += zone->present_pages - zone->managed_pages;
if (is_highmem_idx(zoneid))
highmem += zone->present_pages;
}
pgdat_resize_unlock(pgdat, &flags);
}
printk("%lu pages RAM\n", total);
printk("%lu pages HighMem/MovableOnly\n", highmem);
printk("%lu pages reserved\n", reserved);
#ifdef CONFIG_CMA
printk("%lu pages cma reserved\n", totalcma_pages);
#endif
#ifdef CONFIG_QUICKLIST
printk("%lu pages in pagetable cache\n",
quicklist_total_size());
#endif
#ifdef CONFIG_MEMORY_FAILURE
printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
#endif
}