@@ -103,6 +103,7 @@ static int close_return_path_on_source(MigrationState *s);
static void migration_downtime_start(MigrationState *s)
{
+ trace_vmstate_downtime_checkpoint("src-downtime-start");
s->downtime_start = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
}
@@ -117,6 +118,8 @@ static void migration_downtime_end(MigrationState *s)
if (!s->downtime) {
s->downtime = now - s->downtime_start;
}
+
+ trace_vmstate_downtime_checkpoint("src-downtime-end");
}
static bool migration_needs_multiple_sockets(void)
@@ -151,7 +154,11 @@ static gint page_request_addr_cmp(gconstpointer ap, gconstpointer bp)
int migration_stop_vm(RunState state)
{
- return vm_stop_force_state(state);
+ int ret = vm_stop_force_state(state);
+
+ trace_vmstate_downtime_checkpoint("src-vm-stopped");
+
+ return ret;
}
void migration_object_init(void)
@@ -495,6 +502,8 @@ static void process_incoming_migration_bh(void *opaque)
Error *local_err = NULL;
MigrationIncomingState *mis = opaque;
+ trace_vmstate_downtime_checkpoint("dst-precopy-bh-enter");
+
/* If capability late_block_activate is set:
* Only fire up the block code now if we're going to restart the
* VM, else 'cont' will do it.
@@ -520,6 +529,8 @@ static void process_incoming_migration_bh(void *opaque)
*/
qemu_announce_self(&mis->announce_timer, migrate_announce_params());
+ trace_vmstate_downtime_checkpoint("dst-precopy-bh-announced");
+
multifd_load_shutdown();
dirty_bitmap_mig_before_vm_start();
@@ -537,6 +548,7 @@ static void process_incoming_migration_bh(void *opaque)
} else {
runstate_set(global_state_get_runstate());
}
+ trace_vmstate_downtime_checkpoint("dst-precopy-bh-vm-started");
/*
* This must happen after any state changes since as soon as an external
* observer sees this event they might start to prod at the VM assuming
@@ -571,6 +583,8 @@ process_incoming_migration_co(void *opaque)
ret = qemu_loadvm_state(mis->from_src_file);
mis->loadvm_co = NULL;
+ trace_vmstate_downtime_checkpoint("dst-precopy-loadvm-completed");
+
ps = postcopy_state_get();
trace_process_incoming_migration_co_end(ret, ps);
if (ps != POSTCOPY_INCOMING_NONE) {
@@ -1526,6 +1526,8 @@ int qemu_savevm_state_complete_precopy_iterable(QEMUFile *f, bool in_postcopy)
end_ts_each - start_ts_each);
}
+ trace_vmstate_downtime_checkpoint("src-iterable-saved");
+
return 0;
}
@@ -1592,6 +1594,8 @@ int qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
json_writer_free(vmdesc);
ms->vmdesc = NULL;
+ trace_vmstate_downtime_checkpoint("src-non-iterable-saved");
+
return 0;
}
@@ -2133,18 +2137,18 @@ static void loadvm_postcopy_handle_run_bh(void *opaque)
Error *local_err = NULL;
MigrationIncomingState *mis = opaque;
- trace_loadvm_postcopy_handle_run_bh("enter");
+ trace_vmstate_downtime_checkpoint("dst-postcopy-bh-enter");
/* TODO we should move all of this lot into postcopy_ram.c or a shared code
* in migration.c
*/
cpu_synchronize_all_post_init();
- trace_loadvm_postcopy_handle_run_bh("after cpu sync");
+ trace_vmstate_downtime_checkpoint("dst-postcopy-bh-cpu-synced");
qemu_announce_self(&mis->announce_timer, migrate_announce_params());
- trace_loadvm_postcopy_handle_run_bh("after announce");
+ trace_vmstate_downtime_checkpoint("dst-postcopy-bh-announced");
/* Make sure all file formats throw away their mutable metadata.
* If we get an error here, just don't restart the VM yet. */
@@ -2155,7 +2159,7 @@ static void loadvm_postcopy_handle_run_bh(void *opaque)
autostart = false;
}
- trace_loadvm_postcopy_handle_run_bh("after invalidate cache");
+ trace_vmstate_downtime_checkpoint("dst-postcopy-bh-cache-invalidated");
dirty_bitmap_mig_before_vm_start();
@@ -2169,7 +2173,7 @@ static void loadvm_postcopy_handle_run_bh(void *opaque)
qemu_bh_delete(mis->bh);
- trace_loadvm_postcopy_handle_run_bh("return");
+ trace_vmstate_downtime_checkpoint("dst-postcopy-bh-vm-started");
}
/* After all discards we can start running and asking for pages */
@@ -17,7 +17,6 @@ loadvm_handle_recv_bitmap(char *s) "%s"
loadvm_postcopy_handle_advise(void) ""
loadvm_postcopy_handle_listen(const char *str) "%s"
loadvm_postcopy_handle_run(void) ""
-loadvm_postcopy_handle_run_bh(const char *str) "%s"
loadvm_postcopy_handle_resume(void) ""
loadvm_postcopy_ram_handle_discard(void) ""
loadvm_postcopy_ram_handle_discard_end(void) ""
@@ -50,6 +49,7 @@ vmstate_save(const char *idstr, const char *vmsd_name) "%s, %s"
vmstate_load(const char *idstr, const char *vmsd_name) "%s, %s"
vmstate_downtime_save(const char *type, const char *idstr, uint32_t instance_id, int64_t downtime) "type=%s idstr=%s instance_id=%d downtime=%"PRIi64
vmstate_downtime_load(const char *type, const char *idstr, uint32_t instance_id, int64_t downtime) "type=%s idstr=%s instance_id=%d downtime=%"PRIi64
+vmstate_downtime_checkpoint(const char *checkpoint) "%s"
postcopy_pause_incoming(void) ""
postcopy_pause_incoming_continued(void) ""
postcopy_page_req_sync(void *host_addr) "sync page req %p"