diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-08-11 12:57:01 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-08-11 12:57:01 +0200 |
commit | 6de9c70882ecdee63a652d493bf2353963bd4c22 (patch) | |
tree | 9d219e705492331c97f5f7dccce3b0b1a29251bf /lib/show_mem.c | |
parent | d406d21d90dce2e66c7eb4a44605aac947fe55fb (diff) | |
parent | 796aadeb1b2db9b5d463946766c5bbfd7717158c (diff) |
Merge branch 'linus' into x86/cleanups
Diffstat (limited to 'lib/show_mem.c')
-rw-r--r-- | lib/show_mem.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/show_mem.c b/lib/show_mem.c new file mode 100644 index 00000000000..238e72a18ce --- /dev/null +++ b/lib/show_mem.c @@ -0,0 +1,63 @@ +/* + * 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 +} |