LXR qemu/migration/ram.h

   1/*
   2 * QEMU System Emulator
   3 *
   4 * Copyright (c) 2003-2008 Fabrice Bellard
   5 * Copyright (c) 2011-2015 Red Hat Inc
   6 *
   7 * Authors:
   8 *  Juan Quintela <quintela@redhat.com>
   9 *
  10 * Permission is hereby granted, free of charge, to any person obtaining a copy
  11 * of this software and associated documentation files (the "Software"), to deal
  12 * in the Software without restriction, including without limitation the rights
  13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 * copies of the Software, and to permit persons to whom the Software is
  15 * furnished to do so, subject to the following conditions:
  16 *
  17 * The above copyright notice and this permission notice shall be included in
  18 * all copies or substantial portions of the Software.
  19 *
  20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 * THE SOFTWARE.
  27 */
  28
  29#ifndef QEMU_MIGRATION_RAM_H
  30#define QEMU_MIGRATION_RAM_H
  31
  32#include "qemu-common.h"
  33#include "exec/cpu-common.h"
  34
  35extern MigrationStats ram_counters;
  36extern XBZRLECacheStats xbzrle_counters;
  37
  38int xbzrle_cache_resize(int64_t new_size, Error **errp);
  39uint64_t ram_bytes_remaining(void);
  40uint64_t ram_bytes_total(void);
  41
  42int multifd_save_setup(void);
  43int multifd_save_cleanup(Error **errp);
  44int multifd_load_setup(void);
  45int multifd_load_cleanup(Error **errp);
  46
  47uint64_t ram_pagesize_summary(void);
  48int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len);
  49void acct_update_position(QEMUFile *f, size_t size, bool zero);
  50void ram_debug_dump_bitmap(unsigned long *todump, bool expected,
  51                           unsigned long pages);
  52void ram_postcopy_migrated_memory_release(MigrationState *ms);
  53/* For outgoing discard bitmap */
  54int ram_postcopy_send_discard_bitmap(MigrationState *ms);
  55/* For incoming postcopy discard */
  56int ram_discard_range(const char *block_name, uint64_t start, size_t length);
  57int ram_postcopy_incoming_init(MigrationIncomingState *mis);
  58
  59void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
  60
  61int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr);
  62void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr);
  63void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr);
  64
  65#endif
  66