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 "qapi/qapi-types-migration.h"
  33#include "exec/cpu-common.h"
  34#include "io/channel.h"
  35
  36extern MigrationStats ram_counters;
  37extern XBZRLECacheStats xbzrle_counters;
  38extern CompressionStats compression_counters;
  39
  40int xbzrle_cache_resize(int64_t new_size, Error **errp);
  41uint64_t ram_bytes_remaining(void);
  42uint64_t ram_bytes_total(void);
  43
  44int multifd_save_setup(void);
  45void multifd_save_cleanup(void);
  46int multifd_load_setup(void);
  47int multifd_load_cleanup(Error **errp);
  48bool multifd_recv_all_channels_created(void);
  49bool multifd_recv_new_channel(QIOChannel *ioc, Error **errp);
  50
  51uint64_t ram_pagesize_summary(void);
  52int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len);
  53void acct_update_position(QEMUFile *f, size_t size, bool zero);
  54void ram_debug_dump_bitmap(unsigned long *todump, bool expected,
  55                           unsigned long pages);
  56void ram_postcopy_migrated_memory_release(MigrationState *ms);
  57/* For outgoing discard bitmap */
  58int ram_postcopy_send_discard_bitmap(MigrationState *ms);
  59/* For incoming postcopy discard */
  60int ram_discard_range(const char *block_name, uint64_t start, size_t length);
  61int ram_postcopy_incoming_init(MigrationIncomingState *mis);
  62
  63void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
  64
  65int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr);
  66bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset);
  67void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr);
  68void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr);
  69int64_t ramblock_recv_bitmap_send(QEMUFile *file,
  70                                  const char *block_name);
  71int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *rb);
  72
  73/* ram cache */
  74int colo_init_ram_cache(void);
  75void colo_release_ram_cache(void);
  76
  77#endif
  78