[Qemu-devel] [PATCH v2 27/29] Include sysemu/sysemu.h a lot less

[Markus Armbruster]

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

hw/qdev-core.h includes sysemu/sysemu.h since recent commit e965ffa70a
"qdev: add qdev_add_vm_change_state_handler()".  This is a bad idea:
hw/qdev-core.h is widely included.

Move the declaration of qdev_add_vm_change_state_handler() to
sysemu/sysemu.h, and drop the problematic include from hw/qdev-core.h.

Touching sysemu/sysemu.h now recompiles some 1800 objects.
qemu/uuid.h also drops from 5400 to 1800.  A few more headers show
smaller improvement: qemu/notify.h drops from 5600 to 5200,
qemu/timer.h from 5600 to 4500, and qapi/qapi-types-run-state.h from
5500 to 5000.

Cc: Stefan Hajnoczi <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
---
 accel/kvm/kvm-all.c               | 1 +
 backends/hostmem.c                | 1 +
 cpus.c                            | 1 +
 hw/arm/allwinner-a10.c            | 1 +
 hw/arm/aspeed_soc.c               | 1 +
 hw/arm/kzm.c                      | 1 +
 hw/arm/msf2-soc.c                 | 1 +
 hw/arm/stm32f205_soc.c            | 1 +
 hw/char/serial-isa.c              | 1 +
 hw/char/xen_console.c             | 1 +
 hw/core/numa.c                    | 1 +
 hw/core/vm-change-state-handler.c | 1 +
 hw/display/qxl-render.c           | 1 +
 hw/i386/xen/xen-hvm.c             | 1 +
 hw/i386/xen/xen-mapcache.c        | 1 +
 hw/intc/ioapic.c                  | 1 +
 hw/pci/pci.c                      | 1 +
 hw/riscv/sifive_e.c               | 1 +
 hw/riscv/sifive_u.c               | 1 +
 hw/riscv/spike.c                  | 1 +
 hw/riscv/virt.c                   | 1 +
 hw/sparc64/niagara.c              | 2 +-
 hw/usb/hcd-ehci.h                 | 1 +
 hw/xen/xen-common.c               | 1 +
 hw/xen/xen_devconfig.c            | 1 +
 hw/xenpv/xen_machine_pv.c         | 1 +
 include/hw/qdev-core.h            | 5 -----
 include/sysemu/sysemu.h           | 3 +++
 migration/global_state.c          | 1 +
 migration/migration.c             | 1 +
 migration/savevm.c                | 1 +
 31 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index e1a44eccf5..fc38d0b9e3 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -29,6 +29,7 @@
 #include "exec/gdbstub.h"
 #include "sysemu/kvm_int.h"
 #include "sysemu/cpus.h"
+#include "sysemu/sysemu.h"
 #include "qemu/bswap.h"
 #include "exec/memory.h"
 #include "exec/ram_addr.h"
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 463102aa15..6d333dc23c 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -12,6 +12,7 @@
 
 #include "qemu/osdep.h"
 #include "sysemu/hostmem.h"
+#include "sysemu/sysemu.h"
 #include "hw/boards.h"
 #include "qapi/error.h"
 #include "qapi/qapi-builtin-visit.h"
diff --git a/cpus.c b/cpus.c
index e70cc58e31..a20a9a29c1 100644
--- a/cpus.c
+++ b/cpus.c
@@ -41,6 +41,7 @@
 #include "sysemu/kvm.h"
 #include "sysemu/hax.h"
 #include "sysemu/hvf.h"
+#include "sysemu/sysemu.h"
 #include "sysemu/whpx.h"
 #include "exec/exec-all.h"
 
diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
index 3b0d3eccdd..73810a4440 100644
--- a/hw/arm/allwinner-a10.c
+++ b/hw/arm/allwinner-a10.c
@@ -23,6 +23,7 @@
 #include "hw/sysbus.h"
 #include "hw/arm/allwinner-a10.h"
 #include "hw/misc/unimp.h"
+#include "sysemu/sysemu.h"
 
 static void aw_a10_init(Object *obj)
 {
diff --git a/hw/arm/aspeed_soc.c b/hw/arm/aspeed_soc.c
index c6fb3700f2..9ee8104832 100644
--- a/hw/arm/aspeed_soc.c
+++ b/hw/arm/aspeed_soc.c
@@ -22,6 +22,7 @@
 #include "qemu/error-report.h"
 #include "hw/i2c/aspeed_i2c.h"
 #include "net/net.h"
+#include "sysemu/sysemu.h"
 
 #define ASPEED_SOC_IOMEM_SIZE       0x00200000
 
diff --git a/hw/arm/kzm.c b/hw/arm/kzm.c
index 59d2102dc5..2f052e1f8c 100644
--- a/hw/arm/kzm.c
+++ b/hw/arm/kzm.c
@@ -24,6 +24,7 @@
 #include "hw/net/lan9118.h"
 #include "hw/char/serial.h"
 #include "sysemu/qtest.h"
+#include "sysemu/sysemu.h"
 
 /* Memory map for Kzm Emulation Baseboard:
  * 0x00000000-0x7fffffff See i.MX31 SOC for support
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index 8ae763f99f..76cc3e09b0 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -30,6 +30,7 @@
 #include "hw/irq.h"
 #include "hw/arm/msf2-soc.h"
 #include "hw/misc/unimp.h"
+#include "sysemu/sysemu.h"
 
 #define MSF2_TIMER_BASE       0x40004000
 #define MSF2_SYSREG_BASE      0x40038000
diff --git a/hw/arm/stm32f205_soc.c b/hw/arm/stm32f205_soc.c
index be8b7df679..f5a5c2d80c 100644
--- a/hw/arm/stm32f205_soc.c
+++ b/hw/arm/stm32f205_soc.c
@@ -29,6 +29,7 @@
 #include "exec/address-spaces.h"
 #include "hw/arm/stm32f205_soc.h"
 #include "hw/qdev-properties.h"
+#include "sysemu/sysemu.h"
 
 /* At the moment only Timer 2 to 5 are modelled */
 static const uint32_t timer_addr[STM_NUM_TIMERS] = { 0x40000000, 0x40000400,
diff --git a/hw/char/serial-isa.c b/hw/char/serial-isa.c
index 5a0ae02ee7..9e31c51bb6 100644
--- a/hw/char/serial-isa.c
+++ b/hw/char/serial-isa.c
@@ -26,6 +26,7 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qemu/module.h"
+#include "sysemu/sysemu.h"
 #include "hw/char/serial.h"
 #include "hw/isa/isa.h"
 #include "hw/qdev-properties.h"
diff --git a/hw/char/xen_console.c b/hw/char/xen_console.c
index 8cc9328b3f..63153dfde4 100644
--- a/hw/char/xen_console.c
+++ b/hw/char/xen_console.c
@@ -24,6 +24,7 @@
 #include <termios.h>
 
 #include "qapi/error.h"
+#include "sysemu/sysemu.h"
 #include "chardev/char-fe.h"
 #include "hw/xen/xen-legacy-backend.h"
 
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 450c522dd8..7a63ddc4c6 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -25,6 +25,7 @@
 #include "qemu/osdep.h"
 #include "sysemu/hostmem.h"
 #include "sysemu/numa.h"
+#include "sysemu/sysemu.h"
 #include "exec/cpu-common.h"
 #include "exec/ramlist.h"
 #include "qemu/bitmap.h"
diff --git a/hw/core/vm-change-state-handler.c 
b/hw/core/vm-change-state-handler.c
index e27ea45977..9068d51c9a 100644
--- a/hw/core/vm-change-state-handler.c
+++ b/hw/core/vm-change-state-handler.c
@@ -17,6 +17,7 @@
 
 #include "qemu/osdep.h"
 #include "hw/qdev-core.h"
+#include "sysemu/sysemu.h"
 
 static int qdev_get_dev_tree_depth(DeviceState *dev)
 {
diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c
index 14ad2b352d..473e333475 100644
--- a/hw/display/qxl-render.c
+++ b/hw/display/qxl-render.c
@@ -21,6 +21,7 @@
 
 #include "qemu/osdep.h"
 #include "qxl.h"
+#include "sysemu/sysemu.h"
 #include "trace.h"
 
 static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index 3e15ffc828..ca4659b20f 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -25,6 +25,7 @@
 #include "qemu/error-report.h"
 #include "qemu/main-loop.h"
 #include "qemu/range.h"
+#include "sysemu/sysemu.h"
 #include "sysemu/xen-mapcache.h"
 #include "trace.h"
 #include "exec/address-spaces.h"
diff --git a/hw/i386/xen/xen-mapcache.c b/hw/i386/xen/xen-mapcache.c
index dc73c86c61..09656f9f11 100644
--- a/hw/i386/xen/xen-mapcache.c
+++ b/hw/i386/xen/xen-mapcache.c
@@ -17,6 +17,7 @@
 #include "hw/xen/xen-legacy-backend.h"
 #include "qemu/bitmap.h"
 
+#include "sysemu/sysemu.h"
 #include "sysemu/xen-mapcache.h"
 #include "trace.h"
 
diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index dddd231337..1ede055387 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -30,6 +30,7 @@
 #include "hw/pci/msi.h"
 #include "hw/qdev-properties.h"
 #include "sysemu/kvm.h"
+#include "sysemu/sysemu.h"
 #include "hw/i386/apic-msidef.h"
 #include "hw/i386/x86-iommu.h"
 #include "trace.h"
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 4b6ffab13d..aa05c2b9b2 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -35,6 +35,7 @@
 #include "monitor/monitor.h"
 #include "net/net.h"
 #include "sysemu/numa.h"
+#include "sysemu/sysemu.h"
 #include "hw/loader.h"
 #include "qemu/error-report.h"
 #include "qemu/range.h"
diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index 862903d6b5..792d75a1a3 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -46,6 +46,7 @@
 #include "hw/riscv/boot.h"
 #include "chardev/char.h"
 #include "sysemu/arch_init.h"
+#include "sysemu/sysemu.h"
 #include "exec/address-spaces.h"
 
 static const struct MemmapEntry {
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 0b3c5dff97..9910fa6708 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -44,6 +44,7 @@
 #include "chardev/char.h"
 #include "sysemu/arch_init.h"
 #include "sysemu/device_tree.h"
+#include "sysemu/sysemu.h"
 #include "exec/address-spaces.h"
 
 #include <libfdt.h>
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index 9cc786b6b6..7c04bd554f 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -40,6 +40,7 @@
 #include "sysemu/arch_init.h"
 #include "sysemu/device_tree.h"
 #include "sysemu/qtest.h"
+#include "sysemu/sysemu.h"
 #include "exec/address-spaces.h"
 
 #include <libfdt.h>
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index c72198b720..9bced28486 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -37,6 +37,7 @@
 #include "chardev/char.h"
 #include "sysemu/arch_init.h"
 #include "sysemu/device_tree.h"
+#include "sysemu/sysemu.h"
 #include "exec/address-spaces.h"
 #include "hw/pci/pci.h"
 #include "hw/pci-host/gpex.h"
diff --git a/hw/sparc64/niagara.c b/hw/sparc64/niagara.c
index 1efcff628a..167143bffe 100644
--- a/hw/sparc64/niagara.c
+++ b/hw/sparc64/niagara.c
@@ -35,7 +35,7 @@
 #include "sysemu/block-backend.h"
 #include "qemu/error-report.h"
 #include "sysemu/qtest.h"
-
+#include "sysemu/sysemu.h"
 
 typedef struct NiagaraBoardState {
     MemoryRegion hv_ram;
diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h
index 0298238f0b..fdbcfdcbeb 100644
--- a/hw/usb/hcd-ehci.h
+++ b/hw/usb/hcd-ehci.h
@@ -21,6 +21,7 @@
 #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"
 
diff --git a/hw/xen/xen-common.c b/hw/xen/xen-common.c
index 32503cfc1c..76621da2f5 100644
--- a/hw/xen/xen-common.c
+++ b/hw/xen/xen-common.c
@@ -14,6 +14,7 @@
 #include "hw/xen/xen-legacy-backend.h"
 #include "chardev/char.h"
 #include "sysemu/accel.h"
+#include "sysemu/sysemu.h"
 #include "migration/misc.h"
 #include "migration/global_state.h"
 
diff --git a/hw/xen/xen_devconfig.c b/hw/xen/xen_devconfig.c
index 315dbc9c51..46ee4a7f02 100644
--- a/hw/xen/xen_devconfig.c
+++ b/hw/xen/xen_devconfig.c
@@ -2,6 +2,7 @@
 #include "hw/xen/xen-legacy-backend.h"
 #include "qemu/option.h"
 #include "sysemu/blockdev.h"
+#include "sysemu/sysemu.h"
 
 /* ------------------------------------------------------------- */
 
diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c
index 524d608eab..3a8af1a1e0 100644
--- a/hw/xenpv/xen_machine_pv.c
+++ b/hw/xenpv/xen_machine_pv.c
@@ -28,6 +28,7 @@
 #include "hw/xen/xen-legacy-backend.h"
 #include "hw/xen/xen-bus.h"
 #include "sysemu/block-backend.h"
+#include "sysemu/sysemu.h"
 
 static void xen_init_pv(MachineState *machine)
 {
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index e5b62dd2fc..de70b7a19a 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -5,7 +5,6 @@
 #include "qemu/bitmap.h"
 #include "qom/object.h"
 #include "hw/hotplug.h"
-#include "sysemu/sysemu.h"
 
 enum {
     DEV_NVECTORS_UNSPECIFIED = -1,
@@ -451,8 +450,4 @@ static inline bool qbus_is_hotpluggable(BusState *bus)
 void device_listener_register(DeviceListener *listener);
 void device_listener_unregister(DeviceListener *listener);
 
-VMChangeStateEntry *qdev_add_vm_change_state_handler(DeviceState *dev,
-                                                     VMChangeStateHandler *cb,
-                                                     void *opaque);
-
 #endif
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 227202999d..908f158677 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -29,6 +29,9 @@ VMChangeStateEntry 
*qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
                                                      void *opaque);
 VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
         VMChangeStateHandler *cb, void *opaque, int priority);
+VMChangeStateEntry *qdev_add_vm_change_state_handler(DeviceState *dev,
+                                                     VMChangeStateHandler *cb,
+                                                     void *opaque);
 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
 void vm_state_notify(int running, RunState state);
 
diff --git a/migration/global_state.c b/migration/global_state.c
index 2c8c447239..7cba868979 100644
--- a/migration/global_state.c
+++ b/migration/global_state.c
@@ -13,6 +13,7 @@
 #include "qemu/osdep.h"
 #include "qemu/cutils.h"
 #include "qemu/error-report.h"
+#include "sysemu/sysemu.h"
 #include "qapi/error.h"
 #include "migration.h"
 #include "migration/global_state.h"
diff --git a/migration/migration.c b/migration/migration.c
index 3a6340f602..2986b8b164 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -21,6 +21,7 @@
 #include "exec.h"
 #include "fd.h"
 #include "socket.h"
+#include "sysemu/sysemu.h"
 #include "rdma.h"
 #include "ram.h"
 #include "migration/global_state.h"
diff --git a/migration/savevm.c b/migration/savevm.c
index b8f734537a..33da39f0ea 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -57,6 +57,7 @@
 #include "io/channel-buffer.h"
 #include "io/channel-file.h"
 #include "sysemu/replay.h"
+#include "sysemu/sysemu.h"
 #include "qjson.h"
 #include "migration/colo.h"
 #include "qemu/bitmap.h"
-- 
2.21.0