+ if (!performance || !percpu_ptr(performance, i)) {
+ retval = -EINVAL;
+ continue;
+ }
+
+ pr->performance = percpu_ptr(performance, i);
+ cpu_set(i, pr->performance->shared_cpu_map);
+ if (acpi_processor_get_psd(pr)) {
+ retval = -EINVAL;
+ continue;
+ }
+ }
+ if (retval)
+ goto err_ret;
+
+ /*
+ * Now that we have _PSD data from all CPUs, lets setup P-state
+ * domain info.
+ */
+ for_each_possible_cpu(i) {
+ pr = processors[i];
+ if (!pr)
+ continue;
+
+ /* Basic validity check for domain info */
+ pdomain = &(pr->performance->domain_info);
+ if ((pdomain->revision != ACPI_PSD_REV0_REVISION) ||
+ (pdomain->num_entries != ACPI_PSD_REV0_ENTRIES)) {
+ retval = -EINVAL;
+ goto err_ret;
+ }
+ if (pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ALL &&
+ pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ANY &&
+ pdomain->coord_type != DOMAIN_COORD_TYPE_HW_ALL) {
+ retval = -EINVAL;
+ goto err_ret;
+ }
+ }
+
+ cpus_clear(covered_cpus);
+ for_each_possible_cpu(i) {
+ pr = processors[i];
+ if (!pr)
+ continue;
+
+ if (cpu_isset(i, covered_cpus))
+ continue;
+
+ pdomain = &(pr->performance->domain_info);
+ cpu_set(i, pr->performance->shared_cpu_map);
+ cpu_set(i, covered_cpus);
+ if (pdomain->num_processors <= 1)
+ continue;
+
+ /* Validate the Domain info */
+ count_target = pdomain->num_processors;
+ count = 1;
+ if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL)
+ pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ALL;
+ else if (pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL)
+ pr->performance->shared_type = CPUFREQ_SHARED_TYPE_HW;
+ else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY)
+ pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ANY;
+
+ for_each_possible_cpu(j) {
+ if (i == j)
+ continue;
+
+ match_pr = processors[j];
+ if (!match_pr)
+ continue;
+
+ match_pdomain = &(match_pr->performance->domain_info);
+ if (match_pdomain->domain != pdomain->domain)
+ continue;
+
+ /* Here i and j are in the same domain */
+
+ if (match_pdomain->num_processors != count_target) {
+ retval = -EINVAL;
+ goto err_ret;
+ }
+
+ if (pdomain->coord_type != match_pdomain->coord_type) {
+ retval = -EINVAL;
+ goto err_ret;
+ }
+
+ cpu_set(j, covered_cpus);
+ cpu_set(j, pr->performance->shared_cpu_map);
+ count++;
+ }
+
+ for_each_possible_cpu(j) {
+ if (i == j)
+ continue;
+
+ match_pr = processors[j];
+ if (!match_pr)
+ continue;
+
+ match_pdomain = &(match_pr->performance->domain_info);
+ if (match_pdomain->domain != pdomain->domain)
+ continue;
+
+ match_pr->performance->shared_type =
+ pr->performance->shared_type;
+ match_pr->performance->shared_cpu_map =
+ pr->performance->shared_cpu_map;
+ }
+ }
+
+err_ret:
+ for_each_possible_cpu(i) {
+ pr = processors[i];
+ if (!pr || !pr->performance)
+ continue;
+
+ /* Assume no coordination on any error parsing domain info */
+ if (retval) {
+ cpus_clear(pr->performance->shared_cpu_map);
+ cpu_set(i, pr->performance->shared_cpu_map);
+ pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ALL;
+ }
+ pr->performance = NULL; /* Will be set for real in register */
+ }
+
+ mutex_unlock(&performance_mutex);
+ return retval;
+}
+EXPORT_SYMBOL(acpi_processor_preregister_performance);