Exemple #1
0
/*******************************************************************************
 * This function is passed a cpu_index and the highest level in the topology
 * tree that the operation should be applied to. It picks up locks in order of
 * increasing power domain level in the range specified.
 ******************************************************************************/
void psci_acquire_pwr_domain_locks(unsigned int end_pwrlvl,
				   unsigned int cpu_idx)
{
	unsigned int parent_idx = psci_cpu_pd_nodes[cpu_idx].parent_node;
	unsigned int level;

	/* No locking required for level 0. Hence start locking from level 1 */
	for (level = PSCI_CPU_PWR_LVL + 1; level <= end_pwrlvl; level++) {
		psci_lock_get(&psci_non_cpu_pd_nodes[parent_idx]);
		parent_idx = psci_non_cpu_pd_nodes[parent_idx].parent_node;
	}
}
Exemple #2
0
/*******************************************************************************
 * This function is passed an array of pointers to affinity level nodes in the
 * topology tree for an mpidr. It picks up locks for each affinity level bottom
 * up in the range specified.
 ******************************************************************************/
void psci_acquire_afflvl_locks(int start_afflvl,
			       int end_afflvl,
			       aff_map_node_t *mpidr_nodes[])
{
	int level;

	for (level = start_afflvl; level <= end_afflvl; level++) {
		if (mpidr_nodes[level] == NULL)
			continue;

		psci_lock_get(mpidr_nodes[level]);
	}
}