| 1 | #ifndef _LINUX_AVERAGE_H
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| 2 | #define _LINUX_AVERAGE_H
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| 3 |
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| 4 |
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| 5 |
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| 6 |
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| 7 |
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| 8 | struct ewma {
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| 9 | unsigned long internal;
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| 10 | unsigned long factor;
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| 11 | unsigned long weight;
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| 12 | };
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| 13 |
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| 14 | extern void ewma_init(struct ewma *avg, unsigned long factor,
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| 15 | unsigned long weight);
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| 16 |
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| 17 | extern struct ewma *ewma_add(struct ewma *avg, unsigned long val);
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| 18 |
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| 19 | |
| 20 | * ewma_read() - Get average value
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| 21 | * @avg: Average structure
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| 22 | *
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| 23 | * Returns the average value held in @avg.
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| 24 |
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| 25 | static inline unsigned long ewma_read(const struct ewma *avg)
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| 26 | {
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| 27 | return avg->internal >> avg->factor;
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| 28 | }
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| 29 |
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| 30 | #endif
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