[PULL 2/8] migration: Move ram_stats to its own file migration-stats.[ch]

[Juan Quintela <quintela@redhat.com>]

There is already include/qemu/stats.h, so stats.h was a bad idea.
We want this file to not depend on anything else, we will move all the
migration counters/stats to this struct.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
---
 migration/meson.build       |  1 +
 migration/migration-stats.c | 17 +++++++++++++++
 migration/migration-stats.h | 41 +++++++++++++++++++++++++++++++++++++
 migration/migration.c       |  1 +
 migration/multifd.c         |  1 +
 migration/ram.c             |  3 +--
 migration/ram.h             | 23 ---------------------
 migration/savevm.c          |  1 +
 8 files changed, 63 insertions(+), 25 deletions(-)
 create mode 100644 migration/migration-stats.c
 create mode 100644 migration/migration-stats.h

diff --git a/migration/meson.build b/migration/meson.build
index 480ff6854a..da1897fadf 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -19,6 +19,7 @@ softmmu_ss.add(files(
   'fd.c',
   'global_state.c',
   'migration-hmp-cmds.c',
+  'migration-stats.c',
   'migration.c',
   'multifd.c',
   'multifd-zlib.c',
diff --git a/migration/migration-stats.c b/migration/migration-stats.c
new file mode 100644
index 0000000000..b0eb5ae73c
--- /dev/null
+++ b/migration/migration-stats.c
@@ -0,0 +1,17 @@
+/*
+ * Migration stats
+ *
+ * Copyright (c) 2012-2023 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/stats64.h"
+#include "migration-stats.h"
+
+RAMStats ram_counters;
diff --git a/migration/migration-stats.h b/migration/migration-stats.h
new file mode 100644
index 0000000000..2edea0c779
--- /dev/null
+++ b/migration/migration-stats.h
@@ -0,0 +1,41 @@
+/*
+ * Migration stats
+ *
+ * Copyright (c) 2012-2023 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef QEMU_MIGRATION_STATS_H
+#define QEMU_MIGRATION_STATS_H
+
+#include "qemu/stats64.h"
+
+/*
+ * These are the ram migration statistic counters.  It is loosely
+ * based on MigrationStats.  We change to Stat64 any counter that
+ * needs to be updated using atomic ops (can be accessed by more than
+ * one thread).
+ */
+typedef struct {
+    Stat64 dirty_bytes_last_sync;
+    Stat64 dirty_pages_rate;
+    Stat64 dirty_sync_count;
+    Stat64 dirty_sync_missed_zero_copy;
+    Stat64 downtime_bytes;
+    Stat64 zero_pages;
+    Stat64 multifd_bytes;
+    Stat64 normal_pages;
+    Stat64 postcopy_bytes;
+    Stat64 postcopy_requests;
+    Stat64 precopy_bytes;
+    Stat64 transferred;
+} RAMStats;
+
+extern RAMStats ram_counters;
+
+#endif
diff --git a/migration/migration.c b/migration/migration.c
index abcadbb619..5ecf3dc381 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -29,6 +29,7 @@
 #include "migration/global_state.h"
 #include "migration/misc.h"
 #include "migration.h"
+#include "migration-stats.h"
 #include "savevm.h"
 #include "qemu-file.h"
 #include "channel.h"
diff --git a/migration/multifd.c b/migration/multifd.c
index 6053012ad9..347999f84a 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -19,6 +19,7 @@
 #include "qapi/error.h"
 #include "ram.h"
 #include "migration.h"
+#include "migration-stats.h"
 #include "socket.h"
 #include "tls.h"
 #include "qemu-file.h"
diff --git a/migration/ram.c b/migration/ram.c
index 89be3e3320..a6d5478ef8 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -36,6 +36,7 @@
 #include "xbzrle.h"
 #include "ram.h"
 #include "migration.h"
+#include "migration-stats.h"
 #include "migration/register.h"
 #include "migration/misc.h"
 #include "qemu-file.h"
@@ -460,8 +461,6 @@ uint64_t ram_bytes_remaining(void)
                        0;
 }
 
-RAMStats ram_counters;
-
 void ram_transferred_add(uint64_t bytes)
 {
     if (runstate_is_running()) {
diff --git a/migration/ram.h b/migration/ram.h
index 04b05e1b2c..8692de6ba0 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -32,30 +32,7 @@
 #include "qapi/qapi-types-migration.h"
 #include "exec/cpu-common.h"
 #include "io/channel.h"
-#include "qemu/stats64.h"
 
-/*
- * These are the ram migration statistic counters.  It is loosely
- * based on MigrationStats.  We change to Stat64 any counter that
- * needs to be updated using atomic ops (can be accessed by more than
- * one thread).
- */
-typedef struct {
-    Stat64 dirty_bytes_last_sync;
-    Stat64 dirty_pages_rate;
-    Stat64 dirty_sync_count;
-    Stat64 dirty_sync_missed_zero_copy;
-    Stat64 downtime_bytes;
-    Stat64 zero_pages;
-    Stat64 multifd_bytes;
-    Stat64 normal_pages;
-    Stat64 postcopy_bytes;
-    Stat64 postcopy_requests;
-    Stat64 precopy_bytes;
-    Stat64 transferred;
-} RAMStats;
-
-extern RAMStats ram_counters;
 extern XBZRLECacheStats xbzrle_counters;
 extern CompressionStats compression_counters;
 
diff --git a/migration/savevm.c b/migration/savevm.c
index a9181b444b..8e2efb1a19 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -31,6 +31,7 @@
 #include "net/net.h"
 #include "migration.h"
 #include "migration/snapshot.h"
+#include "migration-stats.h"
 #include "migration/vmstate.h"
 #include "migration/misc.h"
 #include "migration/register.h"
-- 
2.40.0