From 4c2d0f6dca24f3396ab0718ad3f9f53cc53004df Mon Sep 17 00:00:00 2001
From: David Edmondson <david.edmondson@oracle.com>
Date: Tue, 21 Dec 2021 09:34:40 +0000
Subject: [PATCH] migration: Introduce ram_transferred_add()
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Replace direct manipulation of ram_counters.transferred with a
function.

Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/ram.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/migration/ram.c b/migration/ram.c
index 1771bbdb02..619a1d9a6b 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -387,6 +387,11 @@ uint64_t ram_bytes_remaining(void)
 
 MigrationStats ram_counters;
 
+static void ram_transferred_add(uint64_t bytes)
+{
+    ram_counters.transferred += bytes;
+}
+
 /* used by the search for pages to send */
 struct PageSearchStatus {
     /* Current block being searched */
@@ -767,7 +772,7 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
      * RAM_SAVE_FLAG_CONTINUE.
      */
     xbzrle_counters.bytes += bytes_xbzrle - 8;
-    ram_counters.transferred += bytes_xbzrle;
+    ram_transferred_add(bytes_xbzrle);
 
     return 1;
 }
@@ -1208,7 +1213,7 @@ static int save_zero_page(RAMState *rs, RAMBlock *block, ram_addr_t offset)
 
     if (len) {
         ram_counters.duplicate++;
-        ram_counters.transferred += len;
+        ram_transferred_add(len);
         return 1;
     }
     return -1;
@@ -1235,7 +1240,7 @@ static bool control_save_page(RAMState *rs, RAMBlock *block, ram_addr_t offset,
     }
 
     if (bytes_xmit) {
-        ram_counters.transferred += bytes_xmit;
+        ram_transferred_add(bytes_xmit);
         *pages = 1;
     }
 
@@ -1266,8 +1271,8 @@ static bool control_save_page(RAMState *rs, RAMBlock *block, ram_addr_t offset,
 static int save_normal_page(RAMState *rs, RAMBlock *block, ram_addr_t offset,
                             uint8_t *buf, bool async)
 {
-    ram_counters.transferred += save_page_header(rs, rs->f, block,
-                                                 offset | RAM_SAVE_FLAG_PAGE);
+    ram_transferred_add(save_page_header(rs, rs->f, block,
+                                         offset | RAM_SAVE_FLAG_PAGE));
     if (async) {
         qemu_put_buffer_async(rs->f, buf, TARGET_PAGE_SIZE,
                               migrate_release_ram() &
@@ -1275,7 +1280,7 @@ static int save_normal_page(RAMState *rs, RAMBlock *block, ram_addr_t offset,
     } else {
         qemu_put_buffer(rs->f, buf, TARGET_PAGE_SIZE);
     }
-    ram_counters.transferred += TARGET_PAGE_SIZE;
+    ram_transferred_add(TARGET_PAGE_SIZE);
     ram_counters.normal++;
     return 1;
 }
@@ -1367,7 +1372,7 @@ static bool do_compress_ram_page(QEMUFile *f, z_stream *stream, RAMBlock *block,
 static void
 update_compress_thread_counts(const CompressParam *param, int bytes_xmit)
 {
-    ram_counters.transferred += bytes_xmit;
+    ram_transferred_add(bytes_xmit);
 
     if (param->zero_page) {
         ram_counters.duplicate++;
@@ -2284,7 +2289,7 @@ void acct_update_position(QEMUFile *f, size_t size, bool zero)
         ram_counters.duplicate += pages;
     } else {
         ram_counters.normal += pages;
-        ram_counters.transferred += size;
+        ram_transferred_add(size);
         qemu_update_position(f, size);
     }
 }
@@ -3040,7 +3045,7 @@ out:
         multifd_send_sync_main(rs->f);
         qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
         qemu_fflush(f);
-        ram_counters.transferred += 8;
+        ram_transferred_add(8);
 
         ret = qemu_file_get_error(f);
     }