migration: Create migration/blocker.h

This allows us to remove lots of includes of migration/migration.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

block/qcow.c

@@ -32,7 +32,7 @@
 #include <zlib.h>
 #include "qapi/qmp/qerror.h"
 #include "crypto/cipher.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 
 /**************************************************************/
 /* QEMU COW block driver with compression and encryption support */

block/vdi.c

@@ -55,7 +55,7 @@
 #include "sysemu/block-backend.h"
 #include "qemu/module.h"
 #include "qemu/bswap.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/coroutine.h"
 #include "qemu/cutils.h"
 #include "qemu/uuid.h"

block/vhdx.c

@@ -24,7 +24,7 @@
 #include "qemu/crc32c.h"
 #include "qemu/bswap.h"
 #include "block/vhdx.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/uuid.h"
 
 /* Options for VHDX creation */

block/vmdk.c

@@ -31,7 +31,7 @@
 #include "qemu/error-report.h"
 #include "qemu/module.h"
 #include "qemu/bswap.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/cutils.h"
 #include <zlib.h>
 

block/vpc.c

@@ -28,7 +28,7 @@
 #include "block/block_int.h"
 #include "sysemu/block-backend.h"
 #include "qemu/module.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/bswap.h"
 #include "qemu/uuid.h"
 

block/vvfat.c

@@ -28,7 +28,7 @@
 #include "block/block_int.h"
 #include "qemu/module.h"
 #include "qemu/bswap.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qapi/qmp/qint.h"
 #include "qapi/qmp/qbool.h"
 #include "qapi/qmp/qstring.h"

hw/9pfs/9p.c

@@ -23,7 +23,7 @@
 #include "9p-xattr.h"
 #include "coth.h"
 #include "trace.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 
 int open_fd_hw;
 int total_open_fd;

hw/display/qxl.c

@@ -26,7 +26,7 @@
 #include "qemu/queue.h"
 #include "qemu/atomic.h"
 #include "sysemu/sysemu.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "trace.h"
 
 #include "qxl.h"

hw/display/virtio-gpu.c

@@ -19,7 +19,7 @@
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-gpu.h"
 #include "hw/virtio/virtio-bus.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/log.h"
 #include "qapi/error.h"
 

hw/intc/arm_gic_kvm.c

@@ -24,7 +24,7 @@
 #include "qemu-common.h"
 #include "cpu.h"
 #include "hw/sysbus.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "sysemu/kvm.h"
 #include "kvm_arm.h"
 #include "gic_internal.h"

hw/intc/arm_gicv3_its_kvm.c

@@ -24,7 +24,7 @@
 #include "sysemu/sysemu.h"
 #include "sysemu/kvm.h"
 #include "kvm_arm.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 
 #define TYPE_KVM_ARM_ITS "arm-its-kvm"
 #define KVM_ARM_ITS(obj) OBJECT_CHECK(GICv3ITSState, (obj), TYPE_KVM_ARM_ITS)

hw/intc/arm_gicv3_kvm.c

@@ -28,7 +28,7 @@
 #include "kvm_arm.h"
 #include "gicv3_internal.h"
 #include "vgic_common.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 
 #ifdef DEBUG_GICV3_KVM
 #define DPRINTF(fmt, ...) \

hw/misc/ivshmem.c

@@ -25,7 +25,7 @@
 #include "hw/pci/msi.h"
 #include "hw/pci/msix.h"
 #include "sysemu/kvm.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "qemu/error-report.h"
 #include "qemu/event_notifier.h"
 #include "qom/object_interfaces.h"

hw/scsi/vhost-scsi.c

@@ -21,7 +21,7 @@
 #include "qemu/error-report.h"
 #include "qemu/queue.h"
 #include "monitor/monitor.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "hw/virtio/vhost-scsi.h"
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/virtio-scsi.h"

hw/virtio/vhost.c

@@ -25,7 +25,7 @@
 #include "exec/address-spaces.h"
 #include "hw/virtio/virtio-bus.h"
 #include "hw/virtio/virtio-access.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "sysemu/dma.h"
 
 /* enabled until disconnected backend stabilizes */

include/migration/blocker.h

@@ -0,0 +1,35 @@
+/*
+ * QEMU migration blockers
+ *
+ * Copyright IBM, Corp. 2008
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef MIGRATION_BLOCKER_H
+#define MIGRATION_BLOCKER_H
+
+/**
+ * @migrate_add_blocker - prevent migration from proceeding
+ *
+ * @reason - an error to be returned whenever migration is attempted
+ *
+ * @errp - [out] The reason (if any) we cannot block migration right now.
+ *
+ * @returns - 0 on success, -EBUSY/-EACCES on failure, with errp set.
+ */
+int migrate_add_blocker(Error *reason, Error **errp);
+
+/**
+ * @migrate_del_blocker - remove a blocking error from migration
+ *
+ * @reason - the error blocking migration
+ */
+void migrate_del_blocker(Error *reason);
+
+#endif

include/migration/migration.h

@@ -275,24 +275,6 @@ int ram_discard_range(const char *block_name, uint64_t start, size_t length);
 int ram_postcopy_incoming_init(MigrationIncomingState *mis);
 void ram_postcopy_migrated_memory_release(MigrationState *ms);
 
-/**
- * @migrate_add_blocker - prevent migration from proceeding
- *
- * @reason - an error to be returned whenever migration is attempted
- *
- * @errp - [out] The reason (if any) we cannot block migration right now.
- *
- * @returns - 0 on success, -EBUSY/-EACCES on failure, with errp set.
- */
-int migrate_add_blocker(Error *reason, Error **errp);
-
-/**
- * @migrate_del_blocker - remove a blocking error from migration
- *
- * @reason - the error blocking migration
- */
-void migrate_del_blocker(Error *reason);
-
 int check_migratable(Object *obj, Error **err);
 
 bool migrate_release_ram(void);

migration/migration.c

@@ -17,6 +17,7 @@
 #include "qemu/cutils.h"
 #include "qemu/error-report.h"
 #include "qemu/main-loop.h"
+#include "migration/blocker.h"
 #include "migration/migration.h"
 #include "migration/qemu-file.h"
 #include "sysemu/sysemu.h"

stubs/migr-blocker.c

@@ -1,6 +1,6 @@
 #include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 
 int migrate_add_blocker(Error *reason, Error **errp)
 {

target/i386/kvm.c

@@ -43,7 +43,7 @@
 #include "standard-headers/asm-x86/hyperv.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/msi.h"
-#include "migration/migration.h"
+#include "migration/blocker.h"
 #include "exec/memattrs.h"
 #include "trace.h"