From 7e4d4316855f7f6556364eb16828f925b61c80d4 Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Tue, 11 Apr 2023 17:36:48 +0200
Subject: [PATCH 12/56] migration: Make precopy_bytes atomic
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RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo BrĂ¡s <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [11/50] 23bec49b4b8f4d23c2192b401416139e3ca13626 (peterx/qemu-kvm)

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
(cherry picked from commit b013b5d1f32ef88457e66c7ce576f6475238f97f)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 2 +-
 migration/ram.c       | 2 +-
 migration/ram.h       | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 645fb4b3c5..3a68d93d69 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1155,7 +1155,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
     info->ram->page_size = page_size;
     info->ram->multifd_bytes = stat64_get(&ram_counters.multifd_bytes);
     info->ram->pages_per_second = s->pages_per_second;
-    info->ram->precopy_bytes = ram_counters.precopy_bytes;
+    info->ram->precopy_bytes = stat64_get(&ram_counters.precopy_bytes);
     info->ram->downtime_bytes = ram_counters.downtime_bytes;
     info->ram->postcopy_bytes = stat64_get(&ram_counters.postcopy_bytes);
 
diff --git a/migration/ram.c b/migration/ram.c
index 93e0a48af4..0b4693215e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -463,7 +463,7 @@ RAMStats ram_counters;
 void ram_transferred_add(uint64_t bytes)
 {
     if (runstate_is_running()) {
-        ram_counters.precopy_bytes += bytes;
+        stat64_add(&ram_counters.precopy_bytes, bytes);
     } else if (migration_in_postcopy()) {
         stat64_add(&ram_counters.postcopy_bytes, bytes);
     } else {
diff --git a/migration/ram.h b/migration/ram.h
index 2170c55e67..a766b895fa 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -50,7 +50,7 @@ typedef struct {
     Stat64 normal;
     Stat64 postcopy_bytes;
     int64_t postcopy_requests;
-    uint64_t precopy_bytes;
+    Stat64 precopy_bytes;
     int64_t remaining;
     Stat64 transferred;
 } RAMStats;
-- 
2.39.1