Signed-off-by: Juan Quintela <quint...@redhat.com> --- hw/core/qdev-properties.c | 2 +- migration/migration.c | 9 ++++++++ migration/migration.h | 1 + migration/ram.c | 47 +++++++++++++++++++++++++++++++++++++++ qapi/migration.json | 2 +- tests/migration-test.c | 6 +++++ 6 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c index ebeeb5c88d..e40aa806e2 100644 --- a/hw/core/qdev-properties.c +++ b/hw/core/qdev-properties.c @@ -651,7 +651,7 @@ const PropertyInfo qdev_prop_fdc_drive_type = { const PropertyInfo qdev_prop_multifd_compress = { .name = "MultifdCompress", .description = "multifd_compress values, " - "none", + "none/zlib", .enum_table = &MultifdCompress_lookup, .get = get_enum, .set = set_enum, diff --git a/migration/migration.c b/migration/migration.c index d6f8ef342a..69d85cbe5e 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2141,6 +2141,15 @@ bool migrate_use_multifd(void) return s->enabled_capabilities[MIGRATION_CAPABILITY_MULTIFD]; } +bool migrate_use_multifd_zlib(void) +{ + MigrationState *s; + + s = migrate_get_current(); + + return s->parameters.multifd_compress == MULTIFD_COMPRESS_ZLIB; +} + bool migrate_pause_before_switchover(void) { MigrationState *s; diff --git a/migration/migration.h b/migration/migration.h index 438f17edad..fc4fb841d4 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -269,6 +269,7 @@ bool migrate_ignore_shared(void); bool migrate_auto_converge(void); bool migrate_use_multifd(void); +bool migrate_use_multifd_zlib(void); bool migrate_pause_before_switchover(void); int migrate_multifd_channels(void); diff --git a/migration/ram.c b/migration/ram.c index 6679e4f213..fdb5bf07a5 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -582,6 +582,7 @@ exit: #define MULTIFD_VERSION 1 #define MULTIFD_FLAG_SYNC (1 << 0) +#define MULTIFD_FLAG_ZLIB (1 << 1) /* This value needs to be a multiple of qemu_target_page_size() */ #define MULTIFD_PACKET_SIZE (512 * 1024) @@ -663,6 +664,12 @@ typedef struct { uint64_t num_pages; /* syncs main thread and channels */ QemuSemaphore sem_sync; + /* stream for compression */ + z_stream zs; + /* compressed buffer */ + uint8_t *zbuff; + /* size of compressed buffer */ + uint32_t zbuff_len; } MultiFDSendParams; typedef struct { @@ -698,6 +705,12 @@ typedef struct { uint64_t num_pages; /* syncs main thread and channels */ QemuSemaphore sem_sync; + /* stream for compression */ + z_stream zs; + /* compressed buffer */ + uint8_t *zbuff; + /* size of compressed buffer */ + uint32_t zbuff_len; } MultiFDRecvParams; typedef struct { @@ -1071,6 +1084,9 @@ void multifd_save_cleanup(void) p->packet_len = 0; g_free(p->packet); p->packet = NULL; + deflateEnd(&p->zs); + g_free(p->zbuff); + p->zbuff = NULL; } qemu_sem_destroy(&multifd_send_state->channels_ready); qemu_sem_destroy(&multifd_send_state->sem_sync); @@ -1240,6 +1256,7 @@ int multifd_save_setup(void) for (i = 0; i < thread_count; i++) { MultiFDSendParams *p = &multifd_send_state->params[i]; + z_stream *zs = &p->zs; qemu_mutex_init(&p->mutex); qemu_sem_init(&p->sem, 0); @@ -1253,6 +1270,17 @@ int multifd_save_setup(void) p->packet = g_malloc0(p->packet_len); p->name = g_strdup_printf("multifdsend_%d", i); socket_send_channel_create(multifd_new_send_channel_async, p); + zs->zalloc = Z_NULL; + zs->zfree = Z_NULL; + zs->opaque = Z_NULL; + if (deflateInit(zs, migrate_compress_level()) != Z_OK) { + printf("deflate init failed\n"); + return -1; + } + /* We will never have more than page_count pages */ + p->zbuff_len = page_count * qemu_target_page_size(); + p->zbuff_len *= 2; + p->zbuff = g_malloc0(p->zbuff_len); } return 0; } @@ -1322,6 +1350,9 @@ int multifd_load_cleanup(Error **errp) p->packet_len = 0; g_free(p->packet); p->packet = NULL; + inflateEnd(&p->zs); + g_free(p->zbuff); + p->zbuff = NULL; } qemu_sem_destroy(&multifd_recv_state->sem_sync); g_free(multifd_recv_state->params); @@ -1440,6 +1471,7 @@ int multifd_load_setup(void) for (i = 0; i < thread_count; i++) { MultiFDRecvParams *p = &multifd_recv_state->params[i]; + z_stream *zs = &p->zs; qemu_mutex_init(&p->mutex); qemu_sem_init(&p->sem_sync, 0); @@ -1449,6 +1481,21 @@ int multifd_load_setup(void) + sizeof(ram_addr_t) * page_count; p->packet = g_malloc0(p->packet_len); p->name = g_strdup_printf("multifdrecv_%d", i); + + zs->zalloc = Z_NULL; + zs->zfree = Z_NULL; + zs->opaque = Z_NULL; + zs->avail_in = 0; + zs->next_in = Z_NULL; + if (inflateInit(zs) != Z_OK) { + printf("inflate init failed\n"); + return -1; + } + /* We will never have more than page_count pages */ + p->zbuff_len = page_count * qemu_target_page_size(); + /* We know compression "could" use more space */ + p->zbuff_len *= 2; + p->zbuff = g_malloc0(p->zbuff_len); } return 0; } diff --git a/qapi/migration.json b/qapi/migration.json index 8ec1944b7a..e6c27fae06 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -493,7 +493,7 @@ # ## { 'enum': 'MultifdCompress', - 'data': [ 'none' ] } + 'data': [ 'none', 'zlib' ] } ## # @MigrationParameter: diff --git a/tests/migration-test.c b/tests/migration-test.c index 8a1ccc2516..2dd4d4c5b4 100644 --- a/tests/migration-test.c +++ b/tests/migration-test.c @@ -1119,6 +1119,11 @@ static void test_multifd_tcp_none(void) test_multifd_tcp("none"); } +static void test_multifd_tcp_zlib(void) +{ + test_multifd_tcp("zlib"); +} + int main(int argc, char **argv) { char template[] = "/tmp/migration-test-XXXXXX"; @@ -1174,6 +1179,7 @@ int main(int argc, char **argv) /* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */ qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix); qtest_add_func("/migration/multifd/tcp/none", test_multifd_tcp_none); + qtest_add_func("/migration/multifd/tcp/zlib", test_multifd_tcp_zlib); ret = g_test_run(); -- 2.21.0