migration/dirtyrate.h

   1 /*
   2  *  Dirtyrate common functions
   3  *
   4  *  Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD.
   5  *
   6  *  Authors:
   7  *  Chuan Zheng <zhengchuan@huawei.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_DIRTYRATE_H
  14 #define QEMU_MIGRATION_DIRTYRATE_H
  15
  16 /*
  17  * Sample 512 pages per GB as default.
  18  * TODO: Make it configurable.
  19  */
  20 #define DIRTYRATE_DEFAULT_SAMPLE_PAGES            512
  21
  22 struct DirtyRateConfig {
  23     uint64_t sample_pages_per_gigabytes; /* sample pages per GB */
  24     int64_t sample_period_seconds; /* time duration between two sampling */
  25 };
  26
  27 void *get_dirtyrate_thread(void *arg);
  28 #endif