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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/xxhash.h
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@@ -34,7 +34,7 @@
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  * ("BSD").
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  *
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  * You can contact the author at:
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- * - xxHash homepage: http://cyan4973.github.io/xxHash/
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+ * - xxHash homepage: https://cyan4973.github.io/xxHash/
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  * - xxHash source repository: https://github.com/Cyan4973/xxHash
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  */
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@@ -107,6 +107,29 @@
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  */
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 uint64_t xxh64(const void *input, size_t length, uint64_t seed);
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+/**
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+ * xxhash() - calculate wordsize hash of the input with a given seed
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+ * @input:  The data to hash.
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+ * @length: The length of the data to hash.
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+ * @seed:   The seed can be used to alter the result predictably.
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+ *
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+ * If the hash does not need to be comparable between machines with
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+ * different word sizes, this function will call whichever of xxh32()
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+ * or xxh64() is faster.
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+ *
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+ * Return:  wordsize hash of the data.
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+ */
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+
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+static inline unsigned long xxhash(const void *input, size_t length,
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+				   uint64_t seed)
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+{
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+#if BITS_PER_LONG == 64
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+       return xxh64(input, length, seed);
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+#else
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+       return xxh32(input, length, seed);
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+#endif
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+}
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+
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 /*-****************************
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  * Streaming Hash Functions
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  *****************************/