Re: [Qemu-devel] [PATCH 5/6] migration: add some multifd traces

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 8/19/19 1:10 PM, Philippe Mathieu-Daudé wrote:
> On 8/14/19 4:02 AM, Juan Quintela wrote:
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> ---
>>  migration/ram.c        | 3 +++
>>  migration/trace-events | 4 ++++
>>  2 files changed, 7 insertions(+)
>>
>> diff --git a/migration/ram.c b/migration/ram.c
>> index f1aec95f83..25a211c3fb 100644
>> --- a/migration/ram.c
>> +++ b/migration/ram.c
>> @@ -1173,6 +1173,7 @@ static void *multifd_send_thread(void *opaque)
>>  
>>  out:
>>      if (local_err) {
>> +        trace_multifd_send_error(p->id);
>>          multifd_send_terminate_threads(local_err);
>>      }
>>  
>> @@ -1203,6 +1204,7 @@ static void multifd_new_send_channel_async(QIOTask *task, gpointer opaque)
>>      QIOChannel *sioc = QIO_CHANNEL(qio_task_get_source(task));
>>      Error *local_err = NULL;
>>  
>> +    trace_multifd_new_send_channel_async(p->id);
>>      if (qio_task_propagate_error(task, &local_err)) {
>>          migrate_set_error(migrate_get_current(), local_err);
>>          multifd_save_cleanup();
>> @@ -1496,6 +1498,7 @@ bool multifd_recv_new_channel(QIOChannel *ioc, Error **errp)
>>                                  atomic_read(&multifd_recv_state->count));
>>          return false;
>>      }
>> +    trace_multifd_recv_new_channel(id);
>>  
>>      p = &multifd_recv_state->params[id];
>>      if (p->c != NULL) {
>> diff --git a/migration/trace-events b/migration/trace-events
>> index 9fbef614ab..5d85f8bf83 100644
>> --- a/migration/trace-events
>> +++ b/migration/trace-events
>> @@ -81,7 +81,9 @@ migration_bitmap_sync_start(void) ""
>>  migration_bitmap_sync_end(uint64_t dirty_pages) "dirty_pages %" PRIu64
>>  migration_bitmap_clear_dirty(char *str, uint64_t start, uint64_t size, unsigned long page) "rb %s start 0x%"PRIx64" size 0x%"PRIx64" page 0x%lx"
>>  migration_throttle(void) ""
>> +multifd_new_send_channel_async(uint8_t id) "channel %d"
>>  multifd_recv(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_recv_new_channel(uint8_t id) "channel %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"
>> @@ -89,7 +91,9 @@ multifd_recv_terminate_threads(bool error) "error %d"
>>  multifd_recv_thread_can_start(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_save_setup_wait(uint8_t id) "%d"
> 
> This one is not used.
> 
> For the rest:
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Oh I forgot, uint8_t format is "%u", we don't care so far but it could
be useful to enable the -Wformat-signedness cflag one day.

>>  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_error(uint8_t id) "channel %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"
>>