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machine: replace query_hotpluggable_cpus() callback with has_hotpluggable_cpus flag

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Generic helper machine_query_hotpluggable_cpus() replaced
target specific query_hotpluggable_cpus() callbacks so
there is no need in it anymore. However inon NULL callback
value is used to detect/report hotpluggable cpus support,
therefore it can be removed completely.
Replace it with MachineClass.has_hotpluggable_cpus boolean
which is sufficient for the task.

Suggested-by: David Gibson <david@gibson.dropbear.id.au>
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 2017-02-10 11:20:57 +01:00 committed by David Gibson
parent f2d672c248
commit c5514d0e4b
5 changed files with 18 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/i386/pc.c
View File

@ -1955,7 +1955,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
}
/* if 'address' properties socket-id/core-id/thread-id are not set, set them
* so that query_hotpluggable_cpus would show correct values
* so that machine_query_hotpluggable_cpus would show correct values
*/
/* TODO: move socket_id/core_id/thread_id checks into x86_cpu_realizefn()
* once -smp refactoring is complete and there will be CPU private
@ -2326,7 +2326,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
mc->get_hotplug_handler = pc_get_hotpug_handler;
mc->cpu_index_to_socket_id = pc_cpu_index_to_socket_id;
mc->possible_cpu_arch_ids = pc_possible_cpu_arch_ids;
mc->query_hotpluggable_cpus = machine_query_hotpluggable_cpus;
mc->has_hotpluggable_cpus = true;
mc->default_boot_order = "cad";
mc->hot_add_cpu = pc_hot_add_cpu;
mc->block_default_type = IF_IDE;

20
hw/ppc/spapr.c
View File

@ -958,7 +958,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
_FDT(spapr_drc_populate_dt(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB));
}
if (mc->query_hotpluggable_cpus) {
if (mc->has_hotpluggable_cpus) {
int offset = fdt_path_offset(fdt, "/cpus");
ret = spapr_drc_populate_dt(fdt, offset, NULL,
SPAPR_DR_CONNECTOR_TYPE_CPU);
@ -1781,7 +1781,7 @@ static void spapr_init_cpus(sPAPRMachineState *spapr)
}
possible_cpus = mc->possible_cpu_arch_ids(machine);
if (mc->query_hotpluggable_cpus) {
if (mc->has_hotpluggable_cpus) {
if (smp_cpus % smp_threads) {
error_report("smp_cpus (%u) must be multiple of threads (%u)",
smp_cpus, smp_threads);
@ -1803,7 +1803,7 @@ static void spapr_init_cpus(sPAPRMachineState *spapr)
for (i = 0; i < possible_cpus->len; i++) {
int core_id = i * smp_threads;
if (mc->query_hotpluggable_cpus) {
if (mc->has_hotpluggable_cpus) {
sPAPRDRConnector *drc =
spapr_dr_connector_new(OBJECT(spapr),
SPAPR_DR_CONNECTOR_TYPE_CPU,
@ -2575,7 +2575,7 @@ static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
}
drc = spapr_dr_connector_by_id(SPAPR_DR_CONNECTOR_TYPE_CPU, index * smt);
g_assert(drc || !mc->query_hotpluggable_cpus);
g_assert(drc || !mc->has_hotpluggable_cpus);
/*
* Setup CPU DT entries only for hotplugged CPUs. For boot time or
@ -2626,7 +2626,7 @@ static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
CPUArchId *core_slot;
int index;
if (dev->hotplugged && !mc->query_hotpluggable_cpus) {
if (dev->hotplugged && !mc->has_hotpluggable_cpus) {
error_setg(&local_err, "CPU hotplug not supported for this machine");
goto out;
}
@ -2719,7 +2719,7 @@ static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev,
error_setg(errp, "Memory hot unplug not supported for this guest");
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) {
if (!mc->query_hotpluggable_cpus) {
if (!mc->has_hotpluggable_cpus) {
error_setg(errp, "CPU hot unplug not supported on this machine");
return;
}
@ -2746,7 +2746,7 @@ static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev,
error_setg(errp, "Memory hot unplug not supported for this guest");
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) {
if (!mc->query_hotpluggable_cpus) {
if (!mc->has_hotpluggable_cpus) {
error_setg(errp, "CPU hot unplug not supported on this machine");
return;
}
@ -2785,7 +2785,7 @@ static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine)
int spapr_max_cores = max_cpus / smp_threads;
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (!mc->query_hotpluggable_cpus) {
if (!mc->has_hotpluggable_cpus) {
spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads;
}
if (machine->possible_cpus) {
@ -2897,7 +2897,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
smc->dr_lmb_enabled = true;
smc->tcg_default_cpu = "POWER8";
mc->query_hotpluggable_cpus = machine_query_hotpluggable_cpus;
mc->has_hotpluggable_cpus = true;
fwc->get_dev_path = spapr_get_fw_dev_path;
nc->nmi_monitor_handler = spapr_nmi;
smc->phb_placement = spapr_phb_placement;
@ -3097,7 +3097,7 @@ static void spapr_machine_2_6_instance_options(MachineState *machine)
static void spapr_machine_2_6_class_options(MachineClass *mc)
{
spapr_machine_2_7_class_options(mc);
mc->query_hotpluggable_cpus = NULL;
mc->has_hotpluggable_cpus = false;
SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_6);
}

8
include/hw/boards.h
View File

@ -87,10 +87,8 @@ typedef struct {
* Returns an array of @CPUArchId architecture-dependent CPU IDs
* which includes CPU IDs for present and possible to hotplug CPUs.
* Caller is responsible for freeing returned list.
* @query_hotpluggable_cpus:
* Returns a @HotpluggableCPUList, which describes CPUs objects which
* could be added with -device/device_add.
* Caller is responsible for freeing returned list.
* @has_hotpluggable_cpus:
* If true, board supports CPUs creation with -device/device_add.
* @minimum_page_bits:
* If non-zero, the board promises never to create a CPU with a page size
* smaller than this, so QEMU can use a more efficient larger page
@ -136,12 +134,12 @@ struct MachineClass {
bool option_rom_has_mr;
bool rom_file_has_mr;
int minimum_page_bits;
bool has_hotpluggable_cpus;
HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
DeviceState *dev);
unsigned (*cpu_index_to_socket_id)(unsigned cpu_index);
const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
HotpluggableCPUList *(*query_hotpluggable_cpus)(MachineState *machine);
};
/**

4
monitor.c
View File

@ -4155,10 +4155,10 @@ HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
if (!mc->query_hotpluggable_cpus) {
if (!mc->has_hotpluggable_cpus) {
error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
return NULL;
}
return mc->query_hotpluggable_cpus(ms);
return machine_query_hotpluggable_cpus(ms);
}

2
vl.c
View File

@ -1492,7 +1492,7 @@ MachineInfoList *qmp_query_machines(Error **errp)
info->name = g_strdup(mc->name);
info->cpu_max = !mc->max_cpus ? 1 : mc->max_cpus;
info->hotpluggable_cpus = !!mc->query_hotpluggable_cpus;
info->hotpluggable_cpus = mc->has_hotpluggable_cpus;
entry = g_malloc0(sizeof(*entry));
entry->value = info;