commit 72f8e58707395d24c177ffa9f88a25329638fc98
author Juan Quintela <quintela@redhat.com> Tue Apr 11 18:19:05 2023 +0200
committer Juan Quintela <quintela@redhat.com> Thu Apr 27 16:39:49 2023 +0200
tree 831490c8c51fc2039952f5ed3740addd543cbcfe
parent 7757b55eedd5d571d0b0c5f570b01dc3ca910a62

migration: Make dirty_pages_rate atomic

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>

---

Don't use __nocheck() variants
Use stat64_get()

migration/ram.c

diff --git a/migration/ram.c b/migration/ram.c
index e9dcda8..5846f6e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -1130,8 +1130,9 @@
     double compressed_size;
 
     /* calculate period counters */
-    ram_counters.dirty_pages_rate = rs->num_dirty_pages_period * 1000
-                / (end_time - rs->time_last_bitmap_sync);
+    stat64_set(&ram_counters.dirty_pages_rate,
+               rs->num_dirty_pages_period * 1000 /
+               (end_time - rs->time_last_bitmap_sync));
 
     if (!page_count) {
         return;