/* * 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(unsigned int filter) { pg_data_t *pgdat; unsigned long total = 0, reserved = 0, shared = 0, nonshared = 0, highmem = 0; printk("Mem-Info:\n"); show_free_areas(filter); if (filter & SHOW_MEM_FILTER_PAGE_COUNT) return; 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("%lu pages RAM\n", total); #ifdef CONFIG_HIGHMEM printk("%lu pages HighMem\n", highmem); #endif printk("%lu pages reserved\n", reserved); printk("%lu pages shared\n", shared); printk("%lu pages non-shared\n", nonshared); #ifdef CONFIG_QUICKLIST printk("%lu pages in pagetable cache\n", quicklist_total_size()); #endif }