Your landing performance maybe extremely limited especially if ou flaps are jammed at conf 1. We use DODAR. Beyond that consider a WOLF check for landing:
Yes of course, i had in mind the issue the problem of the flaps being able to be extended again not locked for good following a partial loss of hydraulics.On boeing 737 a flaps 15 would be made,for wich the landing distance increase is minimal.
However if they are locked for good,ie assymetryyes,after ecam you must consider your take off field weather,iperformance for the landing distance,auto brake setting versus runway lengh for brake cooling,is an alternate airport available,fuel/distance....
However if a decision to divert to another airport for a longer runway i would assume should be taken with a pinch of salt as there is no info available of your fuel burn with flaps extended.
A flaps up landing on my aircraft can be achieved with max braking in about 1500 meters,so with auto brake 3 around 3000 meters.