MPIR_Ext_cs_yield 1338 ompi/mca/io/romio321/romio/adio/common/ad_iread_coll.c             MPIR_Ext_cs_yield();
MPIR_Ext_cs_yield 1563 ompi/mca/io/romio321/romio/adio/common/ad_iwrite_coll.c             MPIR_Ext_cs_yield();
MPIR_Ext_cs_yield   25 ompi/mca/io/romio321/romio/mpi-io/mpioimpl.h #define ROMIO_THREAD_CS_YIELD() MPIR_Ext_cs_yield()