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422 | giacomo | 1 | #ifndef __ASM_GENERIC_CPUMASK_ARITH_H |
2 | #define __ASM_GENERIC_CPUMASK_ARITH_H |
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3 | |||
4 | /* |
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5 | * Arithmetic type -based cpu bitmaps. A single unsigned long is used |
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6 | * to contain the whole cpu bitmap. |
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7 | */ |
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8 | |||
9 | #define cpu_set(cpu, map) set_bit(cpu, &(map)) |
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10 | #define cpu_clear(cpu, map) clear_bit(cpu, &(map)) |
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11 | #define cpu_isset(cpu, map) test_bit(cpu, &(map)) |
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12 | #define cpu_test_and_set(cpu, map) test_and_set_bit(cpu, &(map)) |
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13 | |||
14 | #define cpus_and(dst,src1,src2) do { dst = (src1) & (src2); } while (0) |
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15 | #define cpus_or(dst,src1,src2) do { dst = (src1) | (src2); } while (0) |
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16 | #define cpus_clear(map) do { map = 0; } while (0) |
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17 | #define cpus_complement(map) do { map = ~(map); } while (0) |
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18 | #define cpus_equal(map1, map2) ((map1) == (map2)) |
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19 | #define cpus_empty(map) ((map) == 0) |
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20 | |||
21 | #if BITS_PER_LONG == 32 |
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22 | #define cpus_weight(map) hweight32(map) |
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23 | #elif BITS_PER_LONG == 64 |
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24 | #define cpus_weight(map) hweight64(map) |
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25 | #endif |
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26 | |||
27 | #define cpus_shift_right(dst, src, n) do { dst = (src) >> (n); } while (0) |
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28 | #define cpus_shift_left(dst, src, n) do { dst = (src) << (n); } while (0) |
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29 | |||
30 | #define any_online_cpu(map) \ |
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31 | ({ \ |
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32 | cpumask_t __tmp__; \ |
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33 | cpus_and(__tmp__, map, cpu_online_map); \ |
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34 | __tmp__ ? first_cpu(__tmp__) : NR_CPUS; \ |
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35 | }) |
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36 | |||
37 | #define CPU_MASK_ALL (~((cpumask_t)0) >> (8*sizeof(cpumask_t) - NR_CPUS)) |
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38 | #define CPU_MASK_NONE ((cpumask_t)0) |
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39 | |||
40 | /* only ever use this for things that are _never_ used on large boxen */ |
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41 | #define cpus_coerce(map) ((unsigned long)(map)) |
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42 | #define cpus_promote(map) ({ map; }) |
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43 | #define cpumask_of_cpu(cpu) ({ ((cpumask_t)1) << (cpu); }) |
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44 | |||
45 | #define first_cpu(map) __ffs(map) |
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46 | #define next_cpu(cpu, map) find_next_bit(&(map), NR_CPUS, cpu + 1) |
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47 | |||
48 | #endif /* __ASM_GENERIC_CPUMASK_ARITH_H */ |