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migration: multifd_save_cleanup() can't fail, simplify

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multifd_save_cleanup() takes an Error ** argument and returns an
error code even though it can't actually fail.  Its callers
dutifully check for failure.  Remove the useless argument and return
value, and simplify the callers.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Fei Li <fli@suse.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20190113140849.38339-4-lifei1214@126.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Fei Li 2019-01-13 22:08:47 +08:00 committed by Dr. David Alan Gilbert
parent 49ed0d24a4
commit 1398b2e3fe
3 changed files with 6 additions and 12 deletions
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5
migration/migration.c
View File

@ -1386,7 +1386,6 @@ static void migrate_fd_cleanup(void *opaque)
qemu_savevm_state_cleanup();
if (s->to_dst_file) {
Error *local_err = NULL;
QEMUFile *tmp;
trace_migrate_fd_cleanup();
@ -1397,9 +1396,7 @@ static void migrate_fd_cleanup(void *opaque)
}
qemu_mutex_lock_iothread();
if (multifd_save_cleanup(&local_err) != 0) {
error_report_err(local_err);
}
multifd_save_cleanup();
qemu_mutex_lock(&s->qemu_file_lock);
tmp = s->to_dst_file;
s->to_dst_file = NULL;

9
migration/ram.c
View File

@ -917,13 +917,12 @@ static void multifd_send_terminate_threads(Error *err)
}
}
int multifd_save_cleanup(Error **errp)
void multifd_save_cleanup(void)
{
int i;
int ret = 0;
if (!migrate_use_multifd()) {
return 0;
return;
}
multifd_send_terminate_threads(NULL);
for (i = 0; i < migrate_multifd_channels(); i++) {
@ -953,7 +952,6 @@ int multifd_save_cleanup(Error **errp)
multifd_send_state->pages = NULL;
g_free(multifd_send_state);
multifd_send_state = NULL;
return ret;
}
static void multifd_send_sync_main(void)
@ -1071,9 +1069,8 @@ static void multifd_new_send_channel_async(QIOTask *task, gpointer opaque)
Error *local_err = NULL;
if (qio_task_propagate_error(task, &local_err)) {
if (multifd_save_cleanup(&local_err) != 0) {
migrate_set_error(migrate_get_current(), local_err);
}
multifd_save_cleanup();
} else {
p->c = QIO_CHANNEL(sioc);
qio_channel_set_delay(p->c, false);

2
migration/ram.h
View File

@ -43,7 +43,7 @@ uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_total(void);
int multifd_save_setup(void);
int multifd_save_cleanup(Error **errp);
void multifd_save_cleanup(void);
int multifd_load_setup(void);
int multifd_load_cleanup(Error **errp);
bool multifd_recv_all_channels_created(void);