diff options
| author | Mark Brown <broonie@kernel.org> | 2020-12-11 17:49:01 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-12-11 17:49:01 +0000 |
| commit | 3e98a021cc85e7d52acdd1eae8a988e975ec5bf9 (patch) | |
| tree | cecfac58b9550a602555a02a9d583ed0f3378b38 /tools/lib/bpf/hashmap.h | |
| parent | 58f7553fa424fd0fd74e8b796d50c66014cebebe (diff) | |
| parent | 2fee9583198eb97b5351feda7bd825e0f778385c (diff) | |
Merge remote-tracking branch 'spi/for-5.11' into spi-next
Diffstat (limited to 'tools/lib/bpf/hashmap.h')
| -rw-r--r-- | tools/lib/bpf/hashmap.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/tools/lib/bpf/hashmap.h b/tools/lib/bpf/hashmap.h index d9b385fe808c..10a4c4cd13cf 100644 --- a/tools/lib/bpf/hashmap.h +++ b/tools/lib/bpf/hashmap.h @@ -15,6 +15,9 @@ static inline size_t hash_bits(size_t h, int bits) { /* shuffle bits and return requested number of upper bits */ + if (bits == 0) + return 0; + #if (__SIZEOF_SIZE_T__ == __SIZEOF_LONG_LONG__) /* LP64 case */ return (h * 11400714819323198485llu) >> (__SIZEOF_LONG_LONG__ * 8 - bits); @@ -174,17 +177,17 @@ bool hashmap__find(const struct hashmap *map, const void *key, void **value); * @key: key to iterate entries for */ #define hashmap__for_each_key_entry(map, cur, _key) \ - for (cur = ({ size_t bkt = hash_bits(map->hash_fn((_key), map->ctx),\ - map->cap_bits); \ - map->buckets ? map->buckets[bkt] : NULL; }); \ + for (cur = map->buckets \ + ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + : NULL; \ cur; \ cur = cur->next) \ if (map->equal_fn(cur->key, (_key), map->ctx)) #define hashmap__for_each_key_entry_safe(map, cur, tmp, _key) \ - for (cur = ({ size_t bkt = hash_bits(map->hash_fn((_key), map->ctx),\ - map->cap_bits); \ - cur = map->buckets ? map->buckets[bkt] : NULL; }); \ + for (cur = map->buckets \ + ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + : NULL; \ cur && ({ tmp = cur->next; true; }); \ cur = tmp) \ if (map->equal_fn(cur->key, (_key), map->ctx)) |