message: Add tgid comm str to i915 graph tooltip
diff: @@ -3302,12 +3302,20 @@ void TraceWin::graph_mouse_tooltip_hovered_items( std::string &ttip, graph_info_
  ttip += "\n";
  // Show tooltip with the closest events we could drum up
  - for ( graph_info_t::hovered_t &hov : gi.hovered_items )
  + for ( size_t i = 0; i < gi.hovered_items.size(); i++ )
  {
  + graph_info_t::hovered_t &hov = gi.hovered_items[ i ];
  trace_event_t &event = get_event( hov.eventid );
  + i915_type_t i915_type = get_i915_reqtype( event );
  m_eventlist.highlight_ids.push_back( event.id );
  + if ( !i && ( i915_type < i915_req_Max ) )
  + {
  + ttip += "\n";
  + ttip += m_trace_events.tgidcomm_from_commstr( event.comm );
  + }
  +
  // Add event id and distance from cursor to this event
  ttip += string_format( "\n%s%u%s %c%s",
  gi.clr_bright, hov.eventid, gi.clr_def,
  @@ -3322,7 +3330,6 @@ void TraceWin::graph_mouse_tooltip_hovered_items( std::string &ttip, graph_info_
  if ( event.crtc >= 0 )
  ttip += std::to_string( event.crtc );
  - i915_type_t i915_type = get_i915_reqtype( event );
  if ( i915_type < i915_req_Max )
  {
  const char *ctxstr = get_event_field_val( event, "ctx", NULL );
  