migration/migration-stats.h

   1 /*
   2  * Migration stats
   3  *
   4  * Copyright (c) 2012-2023 Red Hat Inc
   5  *
   6  * Authors:
   7  *  Juan Quintela <quintela@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #ifndef QEMU_MIGRATION_STATS_H
  14 #define QEMU_MIGRATION_STATS_H
  15
  16 #include "qemu/stats64.h"
  17
  18 /*
  19  * These are the ram migration statistic counters.  It is loosely
  20  * based on MigrationStats.  We change to Stat64 any counter that
  21  * needs to be updated using atomic ops (can be accessed by more than
  22  * one thread).
  23  */
  24 typedef struct {
  25     Stat64 dirty_bytes_last_sync;
  26     Stat64 dirty_pages_rate;
  27     Stat64 dirty_sync_count;
  28     Stat64 dirty_sync_missed_zero_copy;
  29     Stat64 downtime_bytes;
  30     Stat64 zero_pages;
  31     Stat64 multifd_bytes;
  32     Stat64 normal_pages;
  33     Stat64 postcopy_bytes;
  34     Stat64 postcopy_requests;
  35     Stat64 precopy_bytes;
  36     Stat64 transferred;
  37 } MigrationAtomicStats;
  38
  39 extern MigrationAtomicStats mig_stats;
  40
  41 #endif