diff options
author | Sage Weil <sage@newdream.net> | 2009-11-06 16:39:26 -0800 |
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committer | Sage Weil <sage@newdream.net> | 2009-11-06 16:39:26 -0800 |
commit | c6cf726316abd613cfb7c325d950f3629f964ec6 (patch) | |
tree | 446a686988656a355ee7ff94a43912c94f36ac63 /fs/ceph/crush | |
parent | 1bdb70e59026838a79f77c440f8fe480a66e65e8 (diff) |
ceph: make CRUSH hash functions non-inline
These are way to big to be inline. I missed crush/* when doing the inline
audit for akpm's review.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/crush')
-rw-r--r-- | fs/ceph/crush/crush.c | 11 | ||||
-rw-r--r-- | fs/ceph/crush/crush.h | 11 | ||||
-rw-r--r-- | fs/ceph/crush/hash.c | 86 | ||||
-rw-r--r-- | fs/ceph/crush/hash.h | 92 |
4 files changed, 105 insertions, 95 deletions
diff --git a/fs/ceph/crush/crush.c b/fs/ceph/crush/crush.c index 13755cdc4fb3..fabd302e5779 100644 --- a/fs/ceph/crush/crush.c +++ b/fs/ceph/crush/crush.c @@ -10,6 +10,17 @@ #include "crush.h" +const char *crush_bucket_alg_name(int alg) +{ + switch (alg) { + case CRUSH_BUCKET_UNIFORM: return "uniform"; + case CRUSH_BUCKET_LIST: return "list"; + case CRUSH_BUCKET_TREE: return "tree"; + case CRUSH_BUCKET_STRAW: return "straw"; + default: return "unknown"; + } +} + /** * crush_get_bucket_item_weight - Get weight of an item in given bucket * @b: bucket pointer diff --git a/fs/ceph/crush/crush.h b/fs/ceph/crush/crush.h index 9ac7e091126f..92c6b3c3a571 100644 --- a/fs/ceph/crush/crush.h +++ b/fs/ceph/crush/crush.h @@ -97,16 +97,7 @@ enum { CRUSH_BUCKET_TREE = 3, CRUSH_BUCKET_STRAW = 4 }; -static inline const char *crush_bucket_alg_name(int alg) -{ - switch (alg) { - case CRUSH_BUCKET_UNIFORM: return "uniform"; - case CRUSH_BUCKET_LIST: return "list"; - case CRUSH_BUCKET_TREE: return "tree"; - case CRUSH_BUCKET_STRAW: return "straw"; - default: return "unknown"; - } -} +extern const char *crush_bucket_alg_name(int alg); struct crush_bucket { __s32 id; /* this'll be negative */ diff --git a/fs/ceph/crush/hash.c b/fs/ceph/crush/hash.c new file mode 100644 index 000000000000..b438c5d27816 --- /dev/null +++ b/fs/ceph/crush/hash.c @@ -0,0 +1,86 @@ + +#include <linux/types.h> + +/* + * Robert Jenkins' function for mixing 32-bit values + * http://burtleburtle.net/bob/hash/evahash.html + * a, b = random bits, c = input and output + */ +#define crush_hashmix(a, b, c) do { \ + a = a-b; a = a-c; a = a^(c>>13); \ + b = b-c; b = b-a; b = b^(a<<8); \ + c = c-a; c = c-b; c = c^(b>>13); \ + a = a-b; a = a-c; a = a^(c>>12); \ + b = b-c; b = b-a; b = b^(a<<16); \ + c = c-a; c = c-b; c = c^(b>>5); \ + a = a-b; a = a-c; a = a^(c>>3); \ + b = b-c; b = b-a; b = b^(a<<10); \ + c = c-a; c = c-b; c = c^(b>>15); \ + } while (0) + +#define crush_hash_seed 1315423911 + +__u32 crush_hash32(__u32 a) +{ + __u32 hash = crush_hash_seed ^ a; + __u32 b = a; + __u32 x = 231232; + __u32 y = 1232; + crush_hashmix(b, x, hash); + crush_hashmix(y, a, hash); + return hash; +} + +__u32 crush_hash32_2(__u32 a, __u32 b) +{ + __u32 hash = crush_hash_seed ^ a ^ b; + __u32 x = 231232; + __u32 y = 1232; + crush_hashmix(a, b, hash); + crush_hashmix(x, a, hash); + crush_hashmix(b, y, hash); + return hash; +} + +__u32 crush_hash32_3(__u32 a, __u32 b, __u32 c) +{ + __u32 hash = crush_hash_seed ^ a ^ b ^ c; + __u32 x = 231232; + __u32 y = 1232; + crush_hashmix(a, b, hash); + crush_hashmix(c, x, hash); + crush_hashmix(y, a, hash); + crush_hashmix(b, x, hash); + crush_hashmix(y, c, hash); + return hash; +} + +__u32 crush_hash32_4(__u32 a, __u32 b, __u32 c, __u32 d) +{ + __u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d; + __u32 x = 231232; + __u32 y = 1232; + crush_hashmix(a, b, hash); + crush_hashmix(c, d, hash); + crush_hashmix(a, x, hash); + crush_hashmix(y, b, hash); + crush_hashmix(c, x, hash); + crush_hashmix(y, d, hash); + return hash; +} + +__u32 crush_hash32_5(__u32 a, __u32 b, __u32 c, __u32 d, __u32 e) +{ + __u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d ^ e; + __u32 x = 231232; + __u32 y = 1232; + crush_hashmix(a, b, hash); + crush_hashmix(c, d, hash); + crush_hashmix(e, x, hash); + crush_hashmix(y, a, hash); + crush_hashmix(b, x, hash); + crush_hashmix(y, c, hash); + crush_hashmix(d, x, hash); + crush_hashmix(y, e, hash); + return hash; +} diff --git a/fs/ceph/crush/hash.h b/fs/ceph/crush/hash.h index 42f3312783a1..9ce89f85dc7d 100644 --- a/fs/ceph/crush/hash.h +++ b/fs/ceph/crush/hash.h @@ -1,90 +1,12 @@ #ifndef _CRUSH_HASH_H #define _CRUSH_HASH_H -/* - * Robert Jenkins' function for mixing 32-bit values - * http://burtleburtle.net/bob/hash/evahash.html - * a, b = random bits, c = input and output - */ -#define crush_hashmix(a, b, c) do { \ - a = a-b; a = a-c; a = a^(c>>13); \ - b = b-c; b = b-a; b = b^(a<<8); \ - c = c-a; c = c-b; c = c^(b>>13); \ - a = a-b; a = a-c; a = a^(c>>12); \ - b = b-c; b = b-a; b = b^(a<<16); \ - c = c-a; c = c-b; c = c^(b>>5); \ - a = a-b; a = a-c; a = a^(c>>3); \ - b = b-c; b = b-a; b = b^(a<<10); \ - c = c-a; c = c-b; c = c^(b>>15); \ - } while (0) - -#define crush_hash_seed 1315423911 - -static inline __u32 crush_hash32(__u32 a) -{ - __u32 hash = crush_hash_seed ^ a; - __u32 b = a; - __u32 x = 231232; - __u32 y = 1232; - crush_hashmix(b, x, hash); - crush_hashmix(y, a, hash); - return hash; -} - -static inline __u32 crush_hash32_2(__u32 a, __u32 b) -{ - __u32 hash = crush_hash_seed ^ a ^ b; - __u32 x = 231232; - __u32 y = 1232; - crush_hashmix(a, b, hash); - crush_hashmix(x, a, hash); - crush_hashmix(b, y, hash); - return hash; -} - -static inline __u32 crush_hash32_3(__u32 a, __u32 b, __u32 c) -{ - __u32 hash = crush_hash_seed ^ a ^ b ^ c; - __u32 x = 231232; - __u32 y = 1232; - crush_hashmix(a, b, hash); - crush_hashmix(c, x, hash); - crush_hashmix(y, a, hash); - crush_hashmix(b, x, hash); - crush_hashmix(y, c, hash); - return hash; -} - -static inline __u32 crush_hash32_4(__u32 a, __u32 b, __u32 c, - __u32 d) -{ - __u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d; - __u32 x = 231232; - __u32 y = 1232; - crush_hashmix(a, b, hash); - crush_hashmix(c, d, hash); - crush_hashmix(a, x, hash); - crush_hashmix(y, b, hash); - crush_hashmix(c, x, hash); - crush_hashmix(y, d, hash); - return hash; -} - -static inline __u32 crush_hash32_5(__u32 a, __u32 b, __u32 c, - __u32 d, __u32 e) -{ - __u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d ^ e; - __u32 x = 231232; - __u32 y = 1232; - crush_hashmix(a, b, hash); - crush_hashmix(c, d, hash); - crush_hashmix(e, x, hash); - crush_hashmix(y, a, hash); - crush_hashmix(b, x, hash); - crush_hashmix(y, c, hash); - crush_hashmix(d, x, hash); - crush_hashmix(y, e, hash); - return hash; -} +extern __u32 crush_hash32(__u32 a); +extern __u32 crush_hash32_2(__u32 a, __u32 b); +extern __u32 crush_hash32_3(__u32 a, __u32 b, __u32 c); +extern __u32 crush_hash32_4(__u32 a, __u32 b, __u32 c, + __u32 d); +extern __u32 crush_hash32_5(__u32 a, __u32 b, __u32 c, + __u32 d, __u32 e); #endif |