mirror of
https://github.com/torvalds/linux.git
synced 2024-11-06 12:11:59 +00:00
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
|
/*
|
||
|
|
* 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/nmi.h>
|
||
|
|
#include <linux/quicklist.h>
|
||
|
|
|
||
|
|
void show_mem(void)
|
||
|
|
{
|
||
|
|
pg_data_t *pgdat;
|
||
|
|
unsigned long total = 0, reserved = 0, shared = 0,
|
||
|
|
nonshared = 0, highmem = 0;
|
||
|
|
|
||
|
|
printk(KERN_INFO "Mem-Info:\n");
|
||
|
|
show_free_areas();
|
||
|
|
|
||
|
|
for_each_online_pgdat(pgdat) {
|
||
|
|
unsigned long i, flags;
|
||
|
|
|
||
|
|
pgdat_resize_lock(pgdat, &flags);
|
||
|
|
for (i = 0; i < pgdat->node_spanned_pages; i++) {
|
||
|
|
struct page *page;
|
||
|
|
unsigned long pfn = pgdat->node_start_pfn + i;
|
||
|
|
|
||
|
|
if (unlikely(!(i % MAX_ORDER_NR_PAGES)))
|
||
|
|
touch_nmi_watchdog();
|
||
|
|
|
||
|
|
if (!pfn_valid(pfn))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
page = pfn_to_page(pfn);
|
||
|
|
|
||
|
|
if (PageHighMem(page))
|
||
|
|
highmem++;
|
||
|
|
|
||
|
|
if (PageReserved(page))
|
||
|
|
reserved++;
|
||
|
|
else if (page_count(page) == 1)
|
||
|
|
nonshared++;
|
||
|
|
else if (page_count(page) > 1)
|
||
|
|
shared += page_count(page) - 1;
|
||
|
|
|
||
|
|
total++;
|
||
|
|
}
|
||
|
|
pgdat_resize_unlock(pgdat, &flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
printk(KERN_INFO "%lu pages RAM\n", total);
|
||
|
|
#ifdef CONFIG_HIGHMEM
|
||
|
|
printk(KERN_INFO "%lu pages HighMem\n", highmem);
|
||
|
|
#endif
|
||
|
|
printk(KERN_INFO "%lu pages reserved\n", reserved);
|
||
|
|
printk(KERN_INFO "%lu pages shared\n", shared);
|
||
|
|
printk(KERN_INFO "%lu pages non-shared\n", nonshared);
|
||
|
|
#ifdef CONFIG_QUICKLIST
|
||
|
|
printk(KERN_INFO "%lu pages in pagetable cache\n",
|
||
|
|
quicklist_total_size());
|
||
|
|
#endif
|
||
|
|
}
|