-static inline int inet_ehash_locks_alloc(struct inet_hashinfo *hashinfo)
-{
- unsigned int i, size = 256;
-#if defined(CONFIG_PROVE_LOCKING)
- unsigned int nr_pcpus = 2;
-#else
- unsigned int nr_pcpus = num_possible_cpus();
-#endif
- if (nr_pcpus >= 4)
- size = 512;
- if (nr_pcpus >= 8)
- size = 1024;
- if (nr_pcpus >= 16)
- size = 2048;
- if (nr_pcpus >= 32)
- size = 4096;
- if (sizeof(spinlock_t) != 0) {
-#ifdef CONFIG_NUMA
- if (size * sizeof(spinlock_t) > PAGE_SIZE)
- hashinfo->ehash_locks = vmalloc(size * sizeof(spinlock_t));
- else
-#endif
- hashinfo->ehash_locks = kmalloc(size * sizeof(spinlock_t),
- GFP_KERNEL);
- if (!hashinfo->ehash_locks)
- return ENOMEM;
- for (i = 0; i < size; i++)
- spin_lock_init(&hashinfo->ehash_locks[i]);
- }
- hashinfo->ehash_locks_mask = size - 1;
- return 0;
-}