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lib/show_mem.c
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/* * 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; |
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printk("Mem-Info: "); |
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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); } |
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printk("%lu pages RAM ", total); |
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#ifdef CONFIG_HIGHMEM |
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printk("%lu pages HighMem ", highmem); |
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#endif |
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printk("%lu pages reserved ", reserved); printk("%lu pages shared ", shared); printk("%lu pages non-shared ", nonshared); |
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#ifdef CONFIG_QUICKLIST |
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printk("%lu pages in pagetable cache ", |
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quicklist_total_size()); #endif } |