ram: Move migration_dirty_pages to RAMState
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com>
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@ -183,6 +183,8 @@ struct RAMState {
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double xbzrle_cache_miss_rate;
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/* xbzrle number of overflows */
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uint64_t xbzrle_overflows;
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/* number of dirty bits in the bitmap */
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uint64_t migration_dirty_pages;
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};
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typedef struct RAMState RAMState;
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@ -223,8 +225,12 @@ uint64_t xbzrle_mig_pages_overflow(void)
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return ram_state.xbzrle_overflows;
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}
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static ram_addr_t ram_save_remaining(void)
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{
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return ram_state.migration_dirty_pages;
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}
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static QemuMutex migration_bitmap_mutex;
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static uint64_t migration_dirty_pages;
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/* used by the search for pages to send */
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struct PageSearchStatus {
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@ -582,7 +588,7 @@ ram_addr_t migration_bitmap_find_dirty(RAMState *rs, RAMBlock *rb,
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return (next - base) << TARGET_PAGE_BITS;
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}
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static inline bool migration_bitmap_clear_dirty(ram_addr_t addr)
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static inline bool migration_bitmap_clear_dirty(RAMState *rs, ram_addr_t addr)
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{
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bool ret;
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int nr = addr >> TARGET_PAGE_BITS;
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@ -591,7 +597,7 @@ static inline bool migration_bitmap_clear_dirty(ram_addr_t addr)
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ret = test_and_clear_bit(nr, bitmap);
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if (ret) {
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migration_dirty_pages--;
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rs->migration_dirty_pages--;
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}
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return ret;
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}
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@ -601,8 +607,9 @@ static void migration_bitmap_sync_range(RAMState *rs, ram_addr_t start,
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{
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unsigned long *bitmap;
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bitmap = atomic_rcu_read(&migration_bitmap_rcu)->bmap;
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migration_dirty_pages += cpu_physical_memory_sync_dirty_bitmap(bitmap,
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start, length, &rs->num_dirty_pages_period);
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rs->migration_dirty_pages +=
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cpu_physical_memory_sync_dirty_bitmap(bitmap, start, length,
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&rs->num_dirty_pages_period);
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}
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static void migration_bitmap_sync_init(RAMState *rs)
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@ -1304,7 +1311,7 @@ static int ram_save_target_page(RAMState *rs, MigrationState *ms, QEMUFile *f,
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int res = 0;
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/* Check the pages is dirty and if it is send it */
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if (migration_bitmap_clear_dirty(dirty_ram_abs)) {
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if (migration_bitmap_clear_dirty(rs, dirty_ram_abs)) {
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unsigned long *unsentmap;
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if (compression_switch && migrate_use_compression()) {
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res = ram_save_compressed_page(rs, ms, f, pss,
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@ -1454,11 +1461,6 @@ void acct_update_position(QEMUFile *f, size_t size, bool zero)
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}
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}
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static ram_addr_t ram_save_remaining(void)
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{
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return migration_dirty_pages;
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}
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uint64_t ram_bytes_remaining(void)
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{
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return ram_save_remaining() * TARGET_PAGE_SIZE;
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@ -1532,6 +1534,7 @@ static void ram_state_reset(RAMState *rs)
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void migration_bitmap_extend(ram_addr_t old, ram_addr_t new)
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{
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RAMState *rs = &ram_state;
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/* called in qemu main thread, so there is
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* no writing race against this migration_bitmap
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*/
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@ -1557,7 +1560,7 @@ void migration_bitmap_extend(ram_addr_t old, ram_addr_t new)
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atomic_rcu_set(&migration_bitmap_rcu, bitmap);
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qemu_mutex_unlock(&migration_bitmap_mutex);
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migration_dirty_pages += new - old;
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rs->migration_dirty_pages += new - old;
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call_rcu(old_bitmap, migration_bitmap_free, rcu);
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}
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}
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@ -1730,6 +1733,7 @@ static void postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass,
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RAMBlock *block,
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PostcopyDiscardState *pds)
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{
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RAMState *rs = &ram_state;
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unsigned long *bitmap;
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unsigned long *unsentmap;
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unsigned int host_ratio = block->page_size / TARGET_PAGE_SIZE;
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@ -1827,7 +1831,7 @@ static void postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass,
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* Remark them as dirty, updating the count for any pages
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* that weren't previously dirty.
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*/
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migration_dirty_pages += !test_and_set_bit(page, bitmap);
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rs->migration_dirty_pages += !test_and_set_bit(page, bitmap);
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}
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}
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@ -2053,7 +2057,7 @@ static int ram_save_init_globals(RAMState *rs)
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* Count the total number of pages used by ram blocks not including any
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* gaps due to alignment or unplugs.
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*/
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migration_dirty_pages = ram_bytes_total() >> TARGET_PAGE_BITS;
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rs->migration_dirty_pages = ram_bytes_total() >> TARGET_PAGE_BITS;
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memory_global_dirty_log_start();
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migration_bitmap_sync(rs);
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