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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef __LINUX_CPUMASK_H |
| 2 | #define __LINUX_CPUMASK_H |
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| 3 | |||
| 4 | #include <linux/config.h> |
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| 5 | #include <linux/kernel.h> |
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| 6 | #include <linux/threads.h> |
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| 7 | #include <linux/types.h> |
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| 8 | #include <linux/bitmap.h> |
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| 9 | |||
| 10 | #if NR_CPUS > BITS_PER_LONG && NR_CPUS != 1 |
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| 11 | #define CPU_ARRAY_SIZE BITS_TO_LONGS(NR_CPUS) |
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| 12 | |||
| 13 | struct cpumask |
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| 14 | { |
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| 15 | unsigned long mask[CPU_ARRAY_SIZE]; |
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| 16 | }; |
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| 17 | |||
| 18 | typedef struct cpumask cpumask_t; |
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| 19 | |||
| 20 | #else |
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| 21 | typedef unsigned long cpumask_t; |
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| 22 | #endif |
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| 23 | |||
| 24 | #ifdef CONFIG_SMP |
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| 25 | #if NR_CPUS > BITS_PER_LONG |
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| 26 | #include <asm-generic/cpumask_array.h> |
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| 27 | #else |
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| 28 | #include <asm-generic/cpumask_arith.h> |
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| 29 | #endif |
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| 30 | #else |
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| 31 | #include <asm-generic/cpumask_up.h> |
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| 32 | #endif |
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| 33 | |||
| 34 | #if NR_CPUS <= 4*BITS_PER_LONG |
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| 35 | #include <asm-generic/cpumask_const_value.h> |
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| 36 | #else |
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| 37 | #include <asm-generic/cpumask_const_reference.h> |
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| 38 | #endif |
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| 39 | |||
| 40 | |||
| 41 | #ifdef CONFIG_SMP |
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| 42 | |||
| 43 | extern cpumask_t cpu_online_map; |
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| 44 | |||
| 45 | #define num_online_cpus() cpus_weight(cpu_online_map) |
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| 46 | #define cpu_online(cpu) cpu_isset(cpu, cpu_online_map) |
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| 47 | #else |
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| 48 | #define cpu_online_map cpumask_of_cpu(0) |
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| 49 | #define num_online_cpus() 1 |
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| 50 | #define cpu_online(cpu) ({ BUG_ON((cpu) != 0); 1; }) |
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| 51 | #endif |
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| 52 | |||
| 53 | static inline int next_online_cpu(int cpu, cpumask_t map) |
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| 54 | { |
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| 55 | do |
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| 56 | cpu = next_cpu_const(cpu, map); |
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| 57 | while (cpu < NR_CPUS && !cpu_online(cpu)); |
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| 58 | return cpu; |
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| 59 | } |
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| 60 | |||
| 61 | #define for_each_cpu(cpu, map) \ |
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| 62 | for (cpu = first_cpu_const(map); \ |
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| 63 | cpu < NR_CPUS; \ |
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| 64 | cpu = next_cpu_const(cpu,map)) |
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| 65 | |||
| 66 | #define for_each_online_cpu(cpu, map) \ |
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| 67 | for (cpu = first_cpu_const(map); \ |
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| 68 | cpu < NR_CPUS; \ |
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| 69 | cpu = next_online_cpu(cpu,map)) |
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| 70 | |||
| 71 | #endif /* __LINUX_CPUMASK_H */ |