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1 | /* General purpose hashing library |
2 | * |
3 | * That's a start of a kernel hashing library, which can be extended |
4 | * with further algorithms in future. arch_fast_hash{2,}() will |
5 | * eventually resolve to an architecture optimized implementation. |
6 | * |
7 | * Copyright 2013 Francesco Fusco <ffusco@redhat.com> |
8 | * Copyright 2013 Daniel Borkmann <dborkman@redhat.com> |
9 | * Copyright 2013 Thomas Graf <tgraf@redhat.com> |
10 | * Licensed under the GNU General Public License, version 2.0 (GPLv2) |
11 | */ |
12 | |
13 | #include <linux/jhash.h> |
14 | #include <linux/hash.h> |
15 | #include <linux/cache.h> |
16 | |
17 | static struct fast_hash_ops arch_hash_ops __read_mostly = { |
18 | .hash = jhash, |
19 | .hash2 = jhash2, |
20 | }; |
21 | |
22 | u32 arch_fast_hash(const void *data, u32 len, u32 seed) |
23 | { |
24 | return arch_hash_ops.hash(data, len, seed); |
25 | } |
26 | EXPORT_SYMBOL_GPL(arch_fast_hash); |
27 | |
28 | u32 arch_fast_hash2(const u32 *data, u32 len, u32 seed) |
29 | { |
30 | return arch_hash_ops.hash2(data, len, seed); |
31 | } |
32 | EXPORT_SYMBOL_GPL(arch_fast_hash2); |
33 | |
34 | static int __init hashlib_init(void) |
35 | { |
36 | setup_arch_fast_hash(&arch_hash_ops); |
37 | return 0; |
38 | } |
39 | early_initcall(hashlib_init); |
40 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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