1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Generic show_mem() implementation
4 *
5 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
6 */
7
8 #include <linux/mm.h>
9 #include <linux/cma.h>
10
show_mem(unsigned int filter,nodemask_t * nodemask)11 void show_mem(unsigned int filter, nodemask_t *nodemask)
12 {
13 pg_data_t *pgdat;
14 unsigned long total = 0, reserved = 0, highmem = 0;
15
16 printk("Mem-Info:\n");
17 show_free_areas(filter, nodemask);
18
19 for_each_online_pgdat(pgdat) {
20 int zoneid;
21
22 for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
23 struct zone *zone = &pgdat->node_zones[zoneid];
24 if (!populated_zone(zone))
25 continue;
26
27 total += zone->present_pages;
28 reserved += zone->present_pages - zone_managed_pages(zone);
29
30 if (is_highmem_idx(zoneid))
31 highmem += zone->present_pages;
32 }
33 }
34
35 printk("%lu pages RAM\n", total);
36 printk("%lu pages HighMem/MovableOnly\n", highmem);
37 printk("%lu pages reserved\n", reserved);
38 #ifdef CONFIG_CMA
39 printk("%lu pages cma reserved\n", totalcma_pages);
40 #endif
41 #ifdef CONFIG_MEMORY_FAILURE
42 printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
43 #endif
44 }
45