mpmc-1r2w: CPPFLAGS += -DCONFIG_MPMC_READERS=1 -DCONFIG_MPMC_WRITERS=2
mpmc-2r1w: CPPFLAGS += -DCONFIG_MPMC_READERS=2 -DCONFIG_MPMC_WRITERS=1
mpmc-1r2w: CPPFLAGS += -DCONFIG_MPMC_READERS=1 -DCONFIG_MPMC_WRITERS=2
mpmc-2r1w: CPPFLAGS += -DCONFIG_MPMC_READERS=2 -DCONFIG_MPMC_WRITERS=1