From 2a34ee593bb08570fe29420d2309ece9f319014b Mon Sep 17 00:00:00 2001 From: Juan Quintela Date: Fri, 4 Jan 2019 19:45:39 +0100 Subject: multifd: Create new next_packet_size field We need to send this field when we add compression support. As we are still on x- stage, we can do this kind of changes. Signed-off-by: Juan Quintela --- migration/ram.c | 15 +++++++++++++-- migration/trace-events | 4 ++-- 2 files changed, 15 insertions(+), 4 deletions(-) (limited to 'migration') diff --git a/migration/ram.c b/migration/ram.c index dc73829e25..29f2823939 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -597,6 +597,8 @@ typedef struct { /* maximum number of allocated pages */ uint32_t pages_alloc; uint32_t pages_used; + /* size of the next packet that contains pages */ + uint32_t next_packet_size; uint64_t packet_num; char ramblock[256]; uint64_t offset[]; @@ -644,6 +646,8 @@ typedef struct { MultiFDPacket_t *packet; /* multifd flags for each packet */ uint32_t flags; + /* size of the next packet that contains pages */ + uint32_t next_packet_size; /* global number of generated multifd packets */ uint64_t packet_num; /* thread local variables */ @@ -680,6 +684,8 @@ typedef struct { /* global number of generated multifd packets */ uint64_t packet_num; /* thread local variables */ + /* size of the next packet that contains pages */ + uint32_t next_packet_size; /* packets sent through this channel */ uint64_t num_packets; /* pages sent through this channel */ @@ -784,6 +790,7 @@ static void multifd_send_fill_packet(MultiFDSendParams *p) packet->flags = cpu_to_be32(p->flags); packet->pages_alloc = cpu_to_be32(migrate_multifd_page_count()); packet->pages_used = cpu_to_be32(p->pages->used); + packet->next_packet_size = cpu_to_be32(p->next_packet_size); packet->packet_num = cpu_to_be64(p->packet_num); if (p->pages->block) { @@ -835,6 +842,7 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp) return -1; } + p->next_packet_size = be32_to_cpu(packet->next_packet_size); p->packet_num = be64_to_cpu(packet->packet_num); if (p->pages->used) { @@ -1074,6 +1082,7 @@ static void *multifd_send_thread(void *opaque) uint64_t packet_num = p->packet_num; uint32_t flags = p->flags; + p->next_packet_size = used * qemu_target_page_size(); multifd_send_fill_packet(p); p->flags = 0; p->num_packets++; @@ -1081,7 +1090,8 @@ static void *multifd_send_thread(void *opaque) p->pages->used = 0; qemu_mutex_unlock(&p->mutex); - trace_multifd_send(p->id, packet_num, used, flags); + trace_multifd_send(p->id, packet_num, used, flags, + p->next_packet_size); ret = qio_channel_write_all(p->c, (void *)p->packet, p->packet_len, &local_err); @@ -1316,7 +1326,8 @@ static void *multifd_recv_thread(void *opaque) used = p->pages->used; flags = p->flags; - trace_multifd_recv(p->id, p->packet_num, used, flags); + trace_multifd_recv(p->id, p->packet_num, used, flags, + p->next_packet_size); p->num_packets++; p->num_pages += used; qemu_mutex_unlock(&p->mutex); diff --git a/migration/trace-events b/migration/trace-events index 72e3fcb885..ef78dc21f8 100644 --- a/migration/trace-events +++ b/migration/trace-events @@ -76,13 +76,13 @@ get_queued_page_not_dirty(const char *block_name, uint64_t tmp_offset, unsigned migration_bitmap_sync_start(void) "" migration_bitmap_sync_end(uint64_t dirty_pages) "dirty_pages %" PRIu64 migration_throttle(void) "" -multifd_recv(uint8_t id, uint64_t packet_num, uint32_t used, uint32_t flags) "channel %d packet number %" PRIu64 " pages %d flags 0x%x" +multifd_recv(uint8_t id, uint64_t packet_num, uint32_t used, uint32_t flags, uint32_t next_packet_size) "channel %d packet number %" PRIu64 " pages %d flags 0x%x next packet size %d" multifd_recv_sync_main(long packet_num) "packet num %ld" multifd_recv_sync_main_signal(uint8_t id) "channel %d" multifd_recv_sync_main_wait(uint8_t id) "channel %d" multifd_recv_thread_end(uint8_t id, uint64_t packets, uint64_t pages) "channel %d packets %" PRIu64 " pages %" PRIu64 multifd_recv_thread_start(uint8_t id) "%d" -multifd_send(uint8_t id, uint64_t packet_num, uint32_t used, uint32_t flags) "channel %d packet_num %" PRIu64 " pages %d flags 0x%x" +multifd_send(uint8_t id, uint64_t packet_num, uint32_t used, uint32_t flags, uint32_t next_packet_size) "channel %d packet_num %" PRIu64 " pages %d flags 0x%x next packet size %d" multifd_send_sync_main(long packet_num) "packet num %ld" multifd_send_sync_main_signal(uint8_t id) "channel %d" multifd_send_sync_main_wait(uint8_t id) "channel %d" -- cgit v1.2.3