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
11void 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}