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pc: calculate topology only once when possible_cpus is initialised

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Fill in CpuInstanceProperties once at board init time and
just copy them whenever query_hotpluggable_cpus() is called.
It will keep topology info always available without need
to recalculate it every time it's needed.
Considering it has NUMA node id, it will be used to keep
NUMA node to cpu mapping instead of numa_info[i].node_cpu
bitmasks.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Igor Mammedov 2017-02-09 12:08:34 +01:00 • committed by David Gibson
parent c96a1c0ba6
commit c67ae9333c
2 changed files with 14 additions and 12 deletions
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24
hw/i386/pc.c
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@ -2268,7 +2268,17 @@ static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
sizeof(CPUArchId) * max_cpus);
ms->possible_cpus->len = max_cpus;
for (i = 0; i < ms->possible_cpus->len; i++) {
X86CPUTopoInfo topo;
ms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i);
x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
smp_cores, smp_threads, &topo);
ms->possible_cpus->cpus[i].props.has_socket_id = true;
ms->possible_cpus->cpus[i].props.socket_id = topo.pkg_id;
ms->possible_cpus->cpus[i].props.has_core_id = true;
ms->possible_cpus->cpus[i].props.core_id = topo.core_id;
ms->possible_cpus->cpus[i].props.has_thread_id = true;
ms->possible_cpus->cpus[i].props.thread_id = topo.smt_id;
}
return ms->possible_cpus;
}
@ -2285,23 +2295,13 @@ static HotpluggableCPUList *pc_query_hotpluggable_cpus(MachineState *machine)
cpu_type = object_class_get_name(OBJECT_CLASS(CPU_GET_CLASS(cpu)));
for (i = 0; i < machine->possible_cpus->len; i++) {
X86CPUTopoInfo topo;
HotpluggableCPUList *list_item = g_new0(typeof(*list_item), 1);
HotpluggableCPU *cpu_item = g_new0(typeof(*cpu_item), 1);
CpuInstanceProperties *cpu_props = g_new0(typeof(*cpu_props), 1);
const uint32_t apic_id = machine->possible_cpus->cpus[i].arch_id;
x86_topo_ids_from_apicid(apic_id, smp_cores, smp_threads, &topo);
cpu_item->type = g_strdup(cpu_type);
cpu_item->vcpus_count = 1;
cpu_props->has_socket_id = true;
cpu_props->socket_id = topo.pkg_id;
cpu_props->has_core_id = true;
cpu_props->core_id = topo.core_id;
cpu_props->has_thread_id = true;
cpu_props->thread_id = topo.smt_id;
cpu_item->props = cpu_props;
cpu_item->props = g_memdup(&machine->possible_cpus->cpus[i].props,
sizeof(*cpu_item->props));
cpu = machine->possible_cpus->cpus[i].cpu;
if (cpu) {