[PATCH v2 1/7] machine: machine_find_class() function

[Eduardo Habkost]

Move find_machine() from vl.c to core/machine.c and rename it to
machine_find_class(), so it can be reused by other code.

The function won't reuse the results of the previous
object_class_get_list() call like it did in vl.c, but this
shouldn't be a problem because the function is expected to be
called only once during regular QEMU usage.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 include/hw/boards.h |  2 ++
 hw/core/machine.c   | 16 ++++++++++++++++
 softmmu/vl.c        | 17 +----------------
 3 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index bf53e8a16e..922b710be3 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -43,6 +43,8 @@ void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, 
const char *type);
 MemoryRegion *machine_consume_memdev(MachineState *machine,
                                      HostMemoryBackend *backend);
 
+MachineClass *machine_find_class(const char *name);
+
 /**
  * CPUArchId:
  * @arch_id - architecture-dependent CPU ID of present or possible CPU
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 7e2f4ec08e..879a596643 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -1136,6 +1136,22 @@ void machine_run_board_init(MachineState *machine)
     machine_class->init(machine);
 }
 
+MachineClass *machine_find_class(const char *name)
+{
+    g_autoptr(GSList) machines = object_class_get_list(TYPE_MACHINE, false);
+    GSList *el;
+
+    for (el = machines; el; el = el->next) {
+        MachineClass *mc = el->data;
+
+        if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
+            return mc;
+        }
+    }
+
+    return NULL;
+}
+
 static const TypeInfo machine_info = {
     .name = TYPE_MACHINE,
     .parent = TYPE_OBJECT,
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 254ee5e525..b74f377a1c 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -1159,21 +1159,6 @@ static int usb_parse(const char *cmdline)
 
 MachineState *current_machine;
 
-static MachineClass *find_machine(const char *name, GSList *machines)
-{
-    GSList *el;
-
-    for (el = machines; el; el = el->next) {
-        MachineClass *mc = el->data;
-
-        if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
-            return mc;
-        }
-    }
-
-    return NULL;
-}
-
 static MachineClass *find_default_machine(GSList *machines)
 {
     GSList *el;
@@ -2341,7 +2326,7 @@ static MachineClass *machine_parse(const char *name, 
GSList *machines)
         exit(0);
     }
 
-    mc = find_machine(name, machines);
+    mc = machine_find_class(name);
     if (!mc) {
         error_report("unsupported machine type");
         error_printf("Use -machine help to list supported machines\n");
-- 
2.28.0