sysemu: Move the VMChangeStateEntry typedef to qemu/typedefs.h

In my "build everything" tree, changing sysemu/sysemu.h triggers a
recompile of some 1800 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h, down from 5400 due to the
previous commit).

Several headers include sysemu/sysemu.h just to get typedef
VMChangeStateEntry.  Move it from sysemu/sysemu.h to qemu/typedefs.h.
Spell its structure tag the same while there.  Drop the now
superfluous includes of sysemu/sysemu.h from headers.

Touching sysemu/sysemu.h now recompiles some 1100 objects.
qemu/uuid.h also drops from 1800 to 1100, and
qapi/qapi-types-run-state.h from 5000 to 4400.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190812052359.30071-29-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

hw/block/vhost-user-blk.c

@@ -28,6 +28,7 @@
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-bus.h"
 #include "hw/virtio/virtio-access.h"
+#include "sysemu/sysemu.h"
 
 static const int user_feature_bits[] = {
     VIRTIO_BLK_F_SIZE_MAX,

hw/block/virtio-blk.c

@@ -20,6 +20,7 @@
 #include "hw/block/block.h"
 #include "hw/qdev-properties.h"
 #include "sysemu/blockdev.h"
+#include "sysemu/sysemu.h"
 #include "hw/virtio/virtio-blk.h"
 #include "dataplane/virtio-blk.h"
 #include "scsi/constants.h"

hw/display/virtio-gpu.c

@@ -17,6 +17,7 @@
 #include "ui/console.h"
 #include "trace.h"
 #include "sysemu/dma.h"
+#include "sysemu/sysemu.h"
 #include "hw/virtio/virtio.h"
 #include "migration/qemu-file-types.h"
 #include "hw/virtio/virtio-gpu.h"

hw/misc/macio/macio.c

@@ -35,6 +35,7 @@
 #include "hw/char/escc.h"
 #include "hw/misc/macio/macio.h"
 #include "hw/intc/heathrow_pic.h"
+#include "sysemu/sysemu.h"
 #include "trace.h"
 
 /* Note: this code is strongly inspirated from the corresponding code

hw/net/virtio-net.c

@@ -31,6 +31,7 @@
 #include "hw/virtio/virtio-access.h"
 #include "migration/misc.h"
 #include "standard-headers/linux/ethtool.h"
+#include "sysemu/sysemu.h"
 #include "trace.h"
 
 #define VIRTIO_NET_VM_VERSION    11

hw/s390x/s390-ccw.c

@@ -19,6 +19,7 @@
 #include "hw/s390x/css.h"
 #include "hw/s390x/css-bridge.h"
 #include "hw/s390x/s390-ccw.h"
+#include "sysemu/sysemu.h"
 
 IOInstEnding s390_ccw_cmd_request(SubchDev *sch)
 {

hw/s390x/s390-virtio-ccw.c

@@ -40,6 +40,7 @@
 #include "hw/nmi.h"
 #include "hw/qdev-properties.h"
 #include "hw/s390x/tod.h"
+#include "sysemu/sysemu.h"
 
 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
 {

hw/scsi/scsi-bus.c

@@ -10,6 +10,7 @@
 #include "scsi/constants.h"
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
+#include "sysemu/sysemu.h"
 #include "trace.h"
 #include "sysemu/dma.h"
 #include "qemu/cutils.h"

hw/scsi/vhost-scsi.c

@@ -30,6 +30,7 @@
 #include "hw/fw-path-provider.h"
 #include "hw/qdev-properties.h"
 #include "qemu/cutils.h"
+#include "sysemu/sysemu.h"
 
 /* Features supported by host kernel. */
 static const int kernel_feature_bits[] = {

hw/scsi/vhost-user-scsi.c

@@ -28,6 +28,7 @@
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-access.h"
 #include "chardev/char-fe.h"
+#include "sysemu/sysemu.h"
 
 /* Features supported by the host application */
 static const int user_feature_bits[] = {

hw/usb/hcd-ehci.c

@@ -35,6 +35,7 @@
 #include "trace.h"
 #include "qemu/error-report.h"
 #include "qemu/main-loop.h"
+#include "sysemu/sysemu.h"
 
 #define FRAME_TIMER_FREQ 1000
 #define FRAME_TIMER_NS   (NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ)

hw/usb/hcd-ehci.h

@@ -21,7 +21,6 @@
 #include "qemu/timer.h"
 #include "hw/usb.h"
 #include "sysemu/dma.h"
-#include "sysemu/sysemu.h"
 #include "hw/pci/pci.h"
 #include "hw/sysbus.h"
 

hw/virtio/virtio-rng.c

@@ -17,6 +17,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/virtio/virtio-rng.h"
 #include "sysemu/rng.h"
+#include "sysemu/sysemu.h"
 #include "qom/object_interfaces.h"
 #include "trace.h"
 

hw/virtio/virtio.c

@@ -26,6 +26,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/virtio/virtio-access.h"
 #include "sysemu/dma.h"
+#include "sysemu/sysemu.h"
 
 /*
  * The alignment to use between consumer and producer parts of vring.

include/hw/ide/internal.h

@@ -6,11 +6,12 @@
  * only files in hw/ide/ are supposed to include this file.
  * non-internal declarations are in hw/ide.h
  */
+
+#include "qapi/qapi-types-run-state.h"
 #include "hw/ide.h"
 #include "hw/irq.h"
 #include "hw/isa/isa.h"
 #include "sysemu/dma.h"
-#include "sysemu/sysemu.h"
 #include "hw/block/block.h"
 #include "scsi/constants.h"
 

include/hw/ppc/spapr_xive.h

@@ -12,7 +12,6 @@
 
 #include "hw/ppc/spapr_irq.h"
 #include "hw/ppc/xive.h"
-#include "sysemu/sysemu.h"
 
 #define TYPE_SPAPR_XIVE "spapr-xive"
 #define SPAPR_XIVE(obj) OBJECT_CHECK(SpaprXive, (obj), TYPE_SPAPR_XIVE)

include/hw/scsi/scsi.h

@@ -4,7 +4,6 @@
 #include "block/aio.h"
 #include "hw/block/block.h"
 #include "hw/qdev-core.h"
-#include "sysemu/sysemu.h"
 #include "scsi/utils.h"
 #include "qemu/notify.h"
 

include/hw/virtio/virtio.h

@@ -17,7 +17,6 @@
 #include "exec/memory.h"
 #include "hw/qdev-core.h"
 #include "net/net.h"
-#include "sysemu/sysemu.h"
 #include "migration/vmstate.h"
 #include "qemu/event_notifier.h"
 #include "standard-headers/linux/virtio_config.h"

include/qemu/typedefs.h

@@ -118,6 +118,7 @@ typedef struct SHPCDevice SHPCDevice;
 typedef struct SSIBus SSIBus;
 typedef struct VirtIODevice VirtIODevice;
 typedef struct Visitor Visitor;
+typedef struct VMChangeStateEntry VMChangeStateEntry;
 typedef struct VMStateDescription VMStateDescription;
 
 /*

include/sysemu/sysemu.h

@@ -22,7 +22,6 @@ void runstate_set(RunState new_state);
 int runstate_is_running(void);
 bool runstate_needs_reset(void);
 bool runstate_store(char *str, size_t size);
-typedef struct vm_change_state_entry VMChangeStateEntry;
 typedef void VMChangeStateHandler(void *opaque, int running, RunState state);
 
 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,

vl.c

@@ -1362,14 +1362,14 @@ static int machine_help_func(QemuOpts *opts, MachineState *machine)
     return 1;
 }
 
-struct vm_change_state_entry {
+struct VMChangeStateEntry {
     VMChangeStateHandler *cb;
     void *opaque;
-    QTAILQ_ENTRY(vm_change_state_entry) entries;
+    QTAILQ_ENTRY(VMChangeStateEntry) entries;
     int priority;
 };
 
-static QTAILQ_HEAD(, vm_change_state_entry) vm_change_state_head;
+static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
 
 /**
  * qemu_add_vm_change_state_handler_prio: