[Qemu-devel] [PATCH RESEND V3 6/6] migration: trace postcopy total downtime

[Alexey Perevalov <a.perevalov@samsung.com>]

It's not possible to transmit it back to source host,
due to RP protocol is not expandable.

Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com>
---
 migration/postcopy-ram.c | 2 ++
 migration/trace-events   | 1 +
 2 files changed, 3 insertions(+)

diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index cf2b935..35e77ba 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -388,6 +388,8 @@ int postcopy_ram_incoming_cleanup(MigrationIncomingState *mis)
     }
 
     postcopy_state_set(POSTCOPY_INCOMING_END);
+    /* here should be downtime receiving back operation */
+    trace_postcopy_ram_incoming_cleanup_downtime(get_postcopy_total_downtime());
     migrate_send_rp_shut(mis, qemu_file_get_error(mis->from_src_file) != 0);
 
     if (mis->postcopy_tmp_page) {
diff --git a/migration/trace-events b/migration/trace-events
index d338810..faa1b22 100644
--- a/migration/trace-events
+++ b/migration/trace-events
@@ -194,6 +194,7 @@ postcopy_ram_incoming_cleanup_closeuf(void) ""
 postcopy_ram_incoming_cleanup_entry(void) ""
 postcopy_ram_incoming_cleanup_exit(void) ""
 postcopy_ram_incoming_cleanup_join(void) ""
+postcopy_ram_incoming_cleanup_downtime(uint64_t total) "total downtime %" PRIu64
 save_xbzrle_page_skipping(void) ""
 save_xbzrle_page_overflow(void) ""
 ram_save_iterate_big_wait(uint64_t milliconds, int iterations) "big wait: %" PRIu64 " milliseconds, %d iterations"
-- 
1.9.1