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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f4dee85e2c
With sparsemem, pfn should be checked by pfn_valid() before pfn_to_page(). Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
38 lines
885 B
C
38 lines
885 B
C
#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/swap.h>
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void show_mem(void)
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{
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#ifndef CONFIG_NEED_MULTIPLE_NODES /* XXX(hch): later.. */
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int pfn, total = 0, reserved = 0;
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int shared = 0, cached = 0;
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int highmem = 0;
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struct page *page;
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printk("Mem-info:\n");
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show_free_areas();
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printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
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pfn = max_mapnr;
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while (pfn-- > 0) {
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if (!pfn_valid(pfn))
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continue;
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page = pfn_to_page(pfn);
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total++;
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if (PageHighMem(page))
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highmem++;
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if (PageReserved(page))
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reserved++;
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else if (PageSwapCache(page))
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cached++;
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else if (page_count(page))
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shared += page_count(page) - 1;
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}
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printk("%d pages of RAM\n", total);
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printk("%d pages of HIGHMEM\n",highmem);
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printk("%d reserved pages\n",reserved);
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printk("%d pages shared\n",shared);
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printk("%d pages swap cached\n",cached);
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#endif
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}
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