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-rw-r--r--arch/arm64/kernel/smp.c44
1 files changed, 33 insertions, 11 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 2faa9863d2e5..25fcd22a4bb2 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -225,6 +225,7 @@ asmlinkage notrace void secondary_start_kernel(void)
notify_cpu_starting(cpu);
store_cpu_topology(cpu);
+ numa_add_cpu(cpu);
/*
* OK, now it's safe to let the boot CPU continue. Wait for
@@ -278,6 +279,9 @@ int __cpu_disable(void)
if (ret)
return ret;
+ remove_cpu_topology(cpu);
+ numa_remove_cpu(cpu);
+
/*
* Take this CPU offline. Once we clear this, we can't return,
* and we must not schedule until we're ready to give up the cpu.
@@ -518,7 +522,6 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
}
bootcpu_valid = true;
cpu_madt_gicc[0] = *processor;
- early_map_cpu_to_node(0, acpi_numa_get_nid(0, hwid));
return;
}
@@ -541,8 +544,6 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
*/
acpi_set_mailbox_entry(cpu_count, processor);
- early_map_cpu_to_node(cpu_count, acpi_numa_get_nid(cpu_count, hwid));
-
cpu_count++;
}
@@ -562,8 +563,34 @@ acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
return 0;
}
+
+static void __init acpi_parse_and_init_cpus(void)
+{
+ int i;
+
+ /*
+ * do a walk of MADT to determine how many CPUs
+ * we have including disabled CPUs, and get information
+ * we need for SMP init.
+ */
+ acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ acpi_parse_gic_cpu_interface, 0);
+
+ /*
+ * In ACPI, SMP and CPU NUMA information is provided in separate
+ * static tables, namely the MADT and the SRAT.
+ *
+ * Thus, it is simpler to first create the cpu logical map through
+ * an MADT walk and then map the logical cpus to their node ids
+ * as separate steps.
+ */
+ acpi_map_cpus_to_nodes();
+
+ for (i = 0; i < nr_cpu_ids; i++)
+ early_map_cpu_to_node(i, acpi_numa_get_nid(i));
+}
#else
-#define acpi_table_parse_madt(...) do { } while (0)
+#define acpi_parse_and_init_cpus(...) do { } while (0)
#endif
/*
@@ -636,13 +663,7 @@ void __init smp_init_cpus(void)
if (acpi_disabled)
of_parse_and_init_cpus();
else
- /*
- * do a walk of MADT to determine how many CPUs
- * we have including disabled CPUs, and get information
- * we need for SMP init
- */
- acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
- acpi_parse_gic_cpu_interface, 0);
+ acpi_parse_and_init_cpus();
if (cpu_count > nr_cpu_ids)
pr_warn("Number of cores (%d) exceeds configured maximum of %u - clipping\n",
@@ -679,6 +700,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
this_cpu = smp_processor_id();
store_cpu_topology(this_cpu);
numa_store_cpu_info(this_cpu);
+ numa_add_cpu(this_cpu);
/*
* If UP is mandated by "nosmp" (which implies "maxcpus=0"), don't set