static int padata_cpu_hash(struct parallel_data *pd)
{
+ unsigned int seq_nr;
int cpu_index;
/*
* seq_nr mod. number of cpus in use.
*/
- spin_lock(&pd->seq_lock);
- cpu_index = pd->seq_nr % cpumask_weight(pd->cpumask.pcpu);
- pd->seq_nr++;
- spin_unlock(&pd->seq_lock);
+ seq_nr = atomic_inc_return(&pd->seq_nr);
+ cpu_index = seq_nr % cpumask_weight(pd->cpumask.pcpu);
return padata_index_to_cpu(pd, cpu_index);
}
padata_init_pqueues(pd);
padata_init_squeues(pd);
setup_timer(&pd->timer, padata_reorder_timer, (unsigned long)pd);
- pd->seq_nr = 0;
+ atomic_set(&pd->seq_nr, -1);
atomic_set(&pd->reorder_objects, 0);
atomic_set(&pd->refcnt, 0);
pd->pinst = pinst;