diff options
Diffstat (limited to 'migration/ram.c')
| -rw-r--r-- | migration/ram.c | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/migration/ram.c b/migration/ram.c index cd6a1213ab..9ffd0a5479 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -204,11 +204,11 @@ struct RAMState { }; typedef struct RAMState RAMState; -static RAMState ram_state; +static RAMState *ram_state; uint64_t ram_bytes_remaining(void) { - return ram_state.migration_dirty_pages * TARGET_PAGE_SIZE; + return ram_state->migration_dirty_pages * TARGET_PAGE_SIZE; } MigrationStats ram_counters; @@ -793,7 +793,7 @@ static int ram_save_page(RAMState *rs, PageSearchStatus *pss, bool last_stage) static int do_compress_ram_page(QEMUFile *f, RAMBlock *block, ram_addr_t offset) { - RAMState *rs = &ram_state; + RAMState *rs = ram_state; int bytes_sent, blen; uint8_t *p = block->host + (offset & TARGET_PAGE_MASK); @@ -1140,7 +1140,7 @@ static void migration_page_queue_free(RAMState *rs) int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len) { RAMBlock *ramblock; - RAMState *rs = &ram_state; + RAMState *rs = ram_state; ram_counters.postcopy_requests++; rcu_read_lock(); @@ -1361,7 +1361,7 @@ void free_xbzrle_decoded_buf(void) static void ram_migration_cleanup(void *opaque) { - RAMState *rs = opaque; + RAMState **rsp = opaque; RAMBlock *block; /* caller have hold iothread lock or is in a bh, so there is @@ -1388,7 +1388,9 @@ static void ram_migration_cleanup(void *opaque) XBZRLE.zero_target_page = NULL; } XBZRLE_cache_unlock(); - migration_page_queue_free(rs); + migration_page_queue_free(*rsp); + g_free(*rsp); + *rsp = NULL; } static void ram_state_reset(RAMState *rs) @@ -1559,7 +1561,7 @@ static void postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass, RAMBlock *block, PostcopyDiscardState *pds) { - RAMState *rs = &ram_state; + RAMState *rs = ram_state; unsigned long *bitmap = block->bmap; unsigned long *unsentmap = block->unsentmap; unsigned int host_ratio = block->page_size / TARGET_PAGE_SIZE; @@ -1714,7 +1716,7 @@ static int postcopy_chunk_hostpages(MigrationState *ms, RAMBlock *block) */ int ram_postcopy_send_discard_bitmap(MigrationState *ms) { - RAMState *rs = &ram_state; + RAMState *rs = ram_state; RAMBlock *block; int ret; @@ -1797,12 +1799,13 @@ err: return ret; } -static int ram_state_init(RAMState *rs) +static int ram_state_init(RAMState **rsp) { - memset(rs, 0, sizeof(*rs)); - qemu_mutex_init(&rs->bitmap_mutex); - qemu_mutex_init(&rs->src_page_req_mutex); - QSIMPLEQ_INIT(&rs->src_page_requests); + *rsp = g_new0(RAMState, 1); + + qemu_mutex_init(&(*rsp)->bitmap_mutex); + qemu_mutex_init(&(*rsp)->src_page_req_mutex); + QSIMPLEQ_INIT(&(*rsp)->src_page_requests); if (migrate_use_xbzrle()) { XBZRLE_cache_lock(); @@ -1813,6 +1816,8 @@ static int ram_state_init(RAMState *rs) if (!XBZRLE.cache) { XBZRLE_cache_unlock(); error_report("Error creating cache"); + g_free(*rsp); + *rsp = NULL; return -1; } XBZRLE_cache_unlock(); @@ -1821,6 +1826,8 @@ static int ram_state_init(RAMState *rs) XBZRLE.encoded_buf = g_try_malloc0(TARGET_PAGE_SIZE); if (!XBZRLE.encoded_buf) { error_report("Error allocating encoded_buf"); + g_free(*rsp); + *rsp = NULL; return -1; } @@ -1829,6 +1836,8 @@ static int ram_state_init(RAMState *rs) error_report("Error allocating current_buf"); g_free(XBZRLE.encoded_buf); XBZRLE.encoded_buf = NULL; + g_free(*rsp); + *rsp = NULL; return -1; } } @@ -1838,7 +1847,7 @@ static int ram_state_init(RAMState *rs) qemu_mutex_lock_ramlist(); rcu_read_lock(); - ram_state_reset(rs); + ram_state_reset(*rsp); /* Skip setting bitmap if there is no RAM */ if (ram_bytes_total()) { @@ -1860,10 +1869,10 @@ static int ram_state_init(RAMState *rs) * Count the total number of pages used by ram blocks not including any * gaps due to alignment or unplugs. */ - rs->migration_dirty_pages = ram_bytes_total() >> TARGET_PAGE_BITS; + (*rsp)->migration_dirty_pages = ram_bytes_total() >> TARGET_PAGE_BITS; memory_global_dirty_log_start(); - migration_bitmap_sync(rs); + migration_bitmap_sync(*rsp); qemu_mutex_unlock_ramlist(); qemu_mutex_unlock_iothread(); rcu_read_unlock(); @@ -1888,16 +1897,16 @@ static int ram_state_init(RAMState *rs) */ static int ram_save_setup(QEMUFile *f, void *opaque) { - RAMState *rs = opaque; + RAMState **rsp = opaque; RAMBlock *block; /* migration has already setup the bitmap, reuse it. */ if (!migration_in_colo_state()) { - if (ram_state_init(rs) < 0) { + if (ram_state_init(rsp) != 0) { return -1; - } + } } - rs->f = f; + (*rsp)->f = f; rcu_read_lock(); @@ -1932,7 +1941,8 @@ static int ram_save_setup(QEMUFile *f, void *opaque) */ static int ram_save_iterate(QEMUFile *f, void *opaque) { - RAMState *rs = opaque; + RAMState **temp = opaque; + RAMState *rs = *temp; int ret; int i; int64_t t0; @@ -2007,7 +2017,8 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) */ static int ram_save_complete(QEMUFile *f, void *opaque) { - RAMState *rs = opaque; + RAMState **temp = opaque; + RAMState *rs = *temp; rcu_read_lock(); @@ -2044,7 +2055,8 @@ static void ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size, uint64_t *non_postcopiable_pending, uint64_t *postcopiable_pending) { - RAMState *rs = opaque; + RAMState **temp = opaque; + RAMState *rs = *temp; uint64_t remaining_size; remaining_size = rs->migration_dirty_pages * TARGET_PAGE_SIZE; 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