1 /*
2 * Generic show_mem() implementation
3 *
4 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
5 * All code subject to the GPL version 2.
6 */
7
8 #include <linux/mm.h>
9 #include <linux/quicklist.h>
10 #include <linux/cma.h>
11
show_mem(unsigned int filter,nodemask_t * nodemask)12 void show_mem(unsigned int filter, nodemask_t *nodemask)
13 {
14 pg_data_t *pgdat;
15 unsigned long total = 0, reserved = 0, highmem = 0;
16
17 printk("Mem-Info:\n");
18 show_free_areas(filter, nodemask);
19
20 for_each_online_pgdat(pgdat) {
21 unsigned long flags;
22 int zoneid;
23
24 pgdat_resize_lock(pgdat, &flags);
25 for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
26 struct zone *zone = &pgdat->node_zones[zoneid];
27 if (!populated_zone(zone))
28 continue;
29
30 total += zone->present_pages;
31 reserved += zone->present_pages - zone->managed_pages;
32
33 if (is_highmem_idx(zoneid))
34 highmem += zone->present_pages;
35 }
36 pgdat_resize_unlock(pgdat, &flags);
37 }
38
39 printk("%lu pages RAM\n", total);
40 printk("%lu pages HighMem/MovableOnly\n", highmem);
41 printk("%lu pages reserved\n", reserved);
42 #ifdef CONFIG_CMA
43 printk("%lu pages cma reserved\n", totalcma_pages);
44 #endif
45 #ifdef CONFIG_QUICKLIST
46 printk("%lu pages in pagetable cache\n",
47 quicklist_total_size());
48 #endif
49 #ifdef CONFIG_MEMORY_FAILURE
50 printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
51 #endif
52 }
53