cms-sw/cmssw — pull request #3941 by Dr15Jones (2014-05-20 13:56:35+00:00)
Title: Make DQMRootOutputModule a one module

Since ROOT output is thread-safe when a TFile is only being used
on one thread, we can make the DQMRootOutputModule a one module
so it does not stall any legacy modules. The PoolOutputModule is
already a one module.

This is needed to avoid thread stalls in RECO jobs.