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rhashtable: Remove obj_raw_hashfn

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Now that the only caller of obj_raw_hashfn is head_hashfn, we can
simply kill it and fold it into the latter.

This patch also moves the common shift from head_hashfn/key_hashfn
into rht_bucket_index.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2015-03-12 14:49:41 +11:00 committed by David S. Miller
parent cffaa9cb92
commit ec9f71c59e
1 changed files with 7 additions and 18 deletions
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25
lib/rhashtable.c
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@ -63,36 +63,25 @@ static void *rht_obj(const struct rhashtable *ht, const struct rhash_head *he)
static u32 rht_bucket_index(const struct bucket_table *tbl, u32 hash)
{
return hash & (tbl->size - 1);
}
static u32 obj_raw_hashfn(struct rhashtable *ht,
const struct bucket_table *tbl, const void *ptr)
{
u32 hash;
if (unlikely(!ht->p.key_len))
hash = ht->p.obj_hashfn(ptr, tbl->hash_rnd);
else
hash = ht->p.hashfn(ptr + ht->p.key_offset, ht->p.key_len,
tbl->hash_rnd);
return hash >> HASH_RESERVED_SPACE;
return (hash >> HASH_RESERVED_SPACE) & (tbl->size - 1);
}
static u32 key_hashfn(struct rhashtable *ht, const struct bucket_table *tbl,
const void *key)
{
return rht_bucket_index(tbl, ht->p.hashfn(key, ht->p.key_len,
tbl->hash_rnd) >>
HASH_RESERVED_SPACE);
tbl->hash_rnd));
}
static u32 head_hashfn(struct rhashtable *ht,
const struct bucket_table *tbl,
const struct rhash_head *he)
{
return rht_bucket_index(tbl, obj_raw_hashfn(ht, tbl, rht_obj(ht, he)));
const char *ptr = rht_obj(ht, he);
return likely(ht->p.key_len) ?
key_hashfn(ht, tbl, ptr + ht->p.key_offset) :
rht_bucket_index(tbl, ht->p.obj_hashfn(ptr, tbl->hash_rnd));
}
#ifdef CONFIG_PROVE_LOCKING