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migration: Export migrate_set_state()

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Change the first parameter of migrate_set_state(), and export it.
We will use it in a later patch to update incoming state.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

dgilbert: Updated comment as per Juan's review
Message-Id: <1450266458-3178-2-git-send-email-dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
zhanghailiang 2015-12-16 11:47:33 +00:00 committed by Amit Shah
parent 649a1bbaf9
commit 48781e5bf2
2 changed files with 23 additions and 15 deletions
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2
include/migration/migration.h
View file

@ -169,6 +169,8 @@ struct MigrationState
RAMBlock *last_req_rb;
};
void migrate_set_state(int *state, int old_state, int new_state);
void process_incoming_migration(QEMUFile *f);
void qemu_start_incoming_migration(const char *uri, Error **errp);

36
migration/migration.c
View file

@ -787,9 +787,9 @@ void qmp_migrate_start_postcopy(Error **errp)
/* shared migration helpers */
static void migrate_set_state(MigrationState *s, int old_state, int new_state)
void migrate_set_state(int *state, int old_state, int new_state)
{
if (atomic_cmpxchg(&s->state, old_state, new_state) == old_state) {
if (atomic_cmpxchg(state, old_state, new_state) == old_state) {
trace_migrate_set_state(new_state);
migrate_generate_event(new_state);
}
@ -822,7 +822,7 @@ static void migrate_fd_cleanup(void *opaque)
(s->state != MIGRATION_STATUS_POSTCOPY_ACTIVE));
if (s->state == MIGRATION_STATUS_CANCELLING) {
migrate_set_state(s, MIGRATION_STATUS_CANCELLING,
migrate_set_state(&s->state, MIGRATION_STATUS_CANCELLING,
MIGRATION_STATUS_CANCELLED);
}
@ -833,7 +833,8 @@ void migrate_fd_error(MigrationState *s)
{
trace_migrate_fd_error();
assert(s->file == NULL);
migrate_set_state(s, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_FAILED);
migrate_set_state(&s->state, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_FAILED);
notifier_list_notify(&migration_state_notifiers, s);
}
@ -853,7 +854,7 @@ static void migrate_fd_cancel(MigrationState *s)
if (!migration_is_setup_or_active(old_state)) {
break;
}
migrate_set_state(s, old_state, MIGRATION_STATUS_CANCELLING);
migrate_set_state(&s->state, old_state, MIGRATION_STATUS_CANCELLING);
} while (s->state != MIGRATION_STATUS_CANCELLING);
/*
@ -927,7 +928,7 @@ MigrationState *migrate_init(const MigrationParams *params)
s->migration_thread_running = false;
s->last_req_rb = NULL;
migrate_set_state(s, MIGRATION_STATUS_NONE, MIGRATION_STATUS_SETUP);
migrate_set_state(&s->state, MIGRATION_STATUS_NONE, MIGRATION_STATUS_SETUP);
QSIMPLEQ_INIT(&s->src_page_requests);
@ -1026,7 +1027,8 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk,
} else {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "uri",
"a valid migration protocol");
migrate_set_state(s, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_FAILED);
migrate_set_state(&s->state, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_FAILED);
return;
}
@ -1405,7 +1407,7 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running)
int ret;
const QEMUSizedBuffer *qsb;
int64_t time_at_stop = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
migrate_set_state(ms, MIGRATION_STATUS_ACTIVE,
migrate_set_state(&ms->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_POSTCOPY_ACTIVE);
trace_postcopy_start();
@ -1496,7 +1498,7 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running)
ret = qemu_file_get_error(ms->file);
if (ret) {
error_report("postcopy_start: Migration stream errored");
migrate_set_state(ms, MIGRATION_STATUS_POSTCOPY_ACTIVE,
migrate_set_state(&ms->state, MIGRATION_STATUS_POSTCOPY_ACTIVE,
MIGRATION_STATUS_FAILED);
}
@ -1505,7 +1507,7 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running)
fail_closefb:
qemu_fclose(fb);
fail:
migrate_set_state(ms, MIGRATION_STATUS_POSTCOPY_ACTIVE,
migrate_set_state(&ms->state, MIGRATION_STATUS_POSTCOPY_ACTIVE,
MIGRATION_STATUS_FAILED);
qemu_mutex_unlock_iothread();
return -1;
@ -1574,11 +1576,13 @@ static void migration_completion(MigrationState *s, int current_active_state,
goto fail;
}
migrate_set_state(s, current_active_state, MIGRATION_STATUS_COMPLETED);
migrate_set_state(&s->state, current_active_state,
MIGRATION_STATUS_COMPLETED);
return;
fail:
migrate_set_state(s, current_active_state, MIGRATION_STATUS_FAILED);
migrate_set_state(&s->state, current_active_state,
MIGRATION_STATUS_FAILED);
}
/*
@ -1623,7 +1627,8 @@ static void *migration_thread(void *opaque)
s->setup_time = qemu_clock_get_ms(QEMU_CLOCK_HOST) - setup_start;
current_active_state = MIGRATION_STATUS_ACTIVE;
migrate_set_state(s, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_ACTIVE);
migrate_set_state(&s->state, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_ACTIVE);
trace_migration_thread_setup_complete();
@ -1666,7 +1671,8 @@ static void *migration_thread(void *opaque)
}
if (qemu_file_get_error(s->file)) {
migrate_set_state(s, current_active_state, MIGRATION_STATUS_FAILED);
migrate_set_state(&s->state, current_active_state,
MIGRATION_STATUS_FAILED);
trace_migration_thread_file_err();
break;
}
@ -1747,7 +1753,7 @@ void migrate_fd_connect(MigrationState *s)
if (migrate_postcopy_ram()) {
if (open_return_path_on_source(s)) {
error_report("Unable to open return-path for postcopy");
migrate_set_state(s, MIGRATION_STATUS_SETUP,
migrate_set_state(&s->state, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_FAILED);
migrate_fd_cleanup(s);
return;