aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fs/ceph/Makefile2
-rw-r--r--fs/ceph/README1
-rw-r--r--fs/ceph/crush/crush.c11
-rw-r--r--fs/ceph/crush/crush.h11
-rw-r--r--fs/ceph/crush/hash.c86
-rw-r--r--fs/ceph/crush/hash.h92
6 files changed, 107 insertions, 96 deletions
diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile
index 7da6d69dba2..8bad70aac36 100644
--- a/fs/ceph/Makefile
+++ b/fs/ceph/Makefile
@@ -11,7 +11,7 @@ ceph-objs := super.o inode.o dir.o file.o addr.o ioctl.o \
messenger.o msgpool.o buffer.o \
mds_client.o mdsmap.o \
mon_client.o \
- osd_client.o osdmap.o crush/crush.o crush/mapper.o \
+ osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \
debugfs.o \
ceph_fs.o ceph_strings.o ceph_frag.o
diff --git a/fs/ceph/README b/fs/ceph/README
index 231a1df5eaf..660e00074d5 100644
--- a/fs/ceph/README
+++ b/fs/ceph/README
@@ -15,3 +15,4 @@ src/crush/crush.h fs/ceph/crush/crush.h
src/crush/mapper.c fs/ceph/crush/mapper.c
src/crush/mapper.h fs/ceph/crush/mapper.h
src/crush/hash.h fs/ceph/crush/hash.h
+src/crush/hash.c fs/ceph/crush/hash.c
diff --git a/fs/ceph/crush/crush.c b/fs/ceph/crush/crush.c
index 13755cdc4fb..fabd302e577 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 9ac7e091126..92c6b3c3a57 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 00000000000..b438c5d2781
--- /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 42f3312783a..9ce89f85dc7 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 20:59:16 +0000