On Mon, 20 Nov 2017 18:19:37 +0000, Holger Hoffstätte wrote: > 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. Disabling blk-mq didn't help at all either, and since the bcc-provided docker image doesn't work either I guess it's just broken. -h
