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14 | 14 | #define NODE_DATA(nid) (node_data[nid]) |
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15 | 15 | #endif /* CONFIG_NUMA */ |
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16 | 16 | |
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17 | | -#ifdef CONFIG_DISCONTIGMEM |
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18 | | - |
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19 | | -/* |
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20 | | - * generic node memory support, the following assumptions apply: |
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21 | | - * |
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22 | | - * 1) memory comes in 64Mb contiguous chunks which are either present or not |
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23 | | - * 2) we will not have more than 64Gb in total |
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24 | | - * |
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25 | | - * for now assume that 64Gb is max amount of RAM for whole system |
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26 | | - * 64Gb / 4096bytes/page = 16777216 pages |
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27 | | - */ |
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28 | | -#define MAX_NR_PAGES 16777216 |
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29 | | -#define MAX_SECTIONS 1024 |
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30 | | -#define PAGES_PER_SECTION (MAX_NR_PAGES/MAX_SECTIONS) |
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31 | | - |
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32 | | -extern s8 physnode_map[]; |
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33 | | - |
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34 | | -static inline int pfn_to_nid(unsigned long pfn) |
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35 | | -{ |
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36 | | -#ifdef CONFIG_NUMA |
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37 | | - return((int) physnode_map[(pfn) / PAGES_PER_SECTION]); |
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38 | | -#else |
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39 | | - return 0; |
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40 | | -#endif |
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41 | | -} |
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42 | | - |
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43 | | -static inline int pfn_valid(int pfn) |
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44 | | -{ |
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45 | | - int nid = pfn_to_nid(pfn); |
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46 | | - |
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47 | | - if (nid >= 0) |
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48 | | - return (pfn < node_end_pfn(nid)); |
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49 | | - return 0; |
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50 | | -} |
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51 | | - |
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52 | | -#define early_pfn_valid(pfn) pfn_valid((pfn)) |
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53 | | - |
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54 | | -#endif /* CONFIG_DISCONTIGMEM */ |
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55 | | - |
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56 | 17 | #endif /* _ASM_X86_MMZONE_32_H */ |
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