tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/nmi.h>
10#include <linux/quicklist.h>
11#include <linux/cma.h>
12
13void show_mem(unsigned int filter)
14{
15 pg_data_t *pgdat;
16 unsigned long total = 0, reserved = 0, highmem = 0;
17
18 printk("Mem-Info:\n");
19 show_free_areas(filter);
20
21 for_each_online_pgdat(pgdat) {
22 unsigned long flags;
23 int zoneid;
24
25 pgdat_resize_lock(pgdat, &flags);
26 for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
27 struct zone *zone = &pgdat->node_zones[zoneid];
28 if (!populated_zone(zone))
29 continue;
30
31 total += zone->present_pages;
32 reserved += zone->present_pages - zone->managed_pages;
33
34 if (is_highmem_idx(zoneid))
35 highmem += zone->present_pages;
36 }
37 pgdat_resize_unlock(pgdat, &flags);
38 }
39
40 printk("%lu pages RAM\n", total);
41 printk("%lu pages HighMem/MovableOnly\n", highmem);
42#ifdef CONFIG_CMA
43 printk("%lu pages reserved\n", (reserved - totalcma_pages));
44 printk("%lu pages cma reserved\n", totalcma_pages);
45#else
46 printk("%lu pages reserved\n", reserved);
47#endif
48#ifdef CONFIG_QUICKLIST
49 printk("%lu pages in pagetable cache\n",
50 quicklist_total_size());
51#endif
52#ifdef CONFIG_MEMORY_FAILURE
53 printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
54#endif
55}