Sorry if this is a dumb question, but I've started playing with bcc (release 0.4.0) and can trace everything (cpu, xfs, net..) so it works fine - except apparently block traffic. I've tried all the bio* tools and none of them seem to trace/collect anything, despite the fact that they contain blk-mq tracepoint references. I have set CONFIG_SCSI_MQ_DEFAULT=y and everything works fine otherwise. Is this supposed to work, broken in bcc/blk-mq/something else? Haven't tried to boot with scsi_mod.use_blk_mq=0 yet, just wanted to ping for possible confirmation. Thanks, Holger
