[v2,0/4] vfio-ccw: A couple trace changes

Message

Eric Farman Oct. 16, 2019, 1:58 a.m. UTC

Here a couple updates to the vfio-ccw traces in the kernel,
based on things I've been using locally.  Perhaps they'll
be useful for future debugging.

Steffen's comments earlier today (thank you!) were simple enough
that here's a quick turnaround on a v2:

v1/RFC -> v2:
 - Convert state/event=%x to %d
 - Use individual fields for cssid/ssid/sch_no, to enable
   filtering by device
 - Add 0x prefix to remaining %x substitution in existing trace

Eric Farman (4):
  vfio-ccw: Refactor how the traces are built
  vfio-ccw: Trace the FSM jumptable
  vfio-ccw: Add a trace for asynchronous requests
  vfio-ccw: Rework the io_fctl trace

 drivers/s390/cio/Makefile           |  4 +-
 drivers/s390/cio/vfio_ccw_cp.h      |  1 +
 drivers/s390/cio/vfio_ccw_fsm.c     | 11 +++--
 drivers/s390/cio/vfio_ccw_private.h |  1 +
 drivers/s390/cio/vfio_ccw_trace.c   | 14 ++++++
 drivers/s390/cio/vfio_ccw_trace.h   | 76 ++++++++++++++++++++++++++---
 6 files changed, 93 insertions(+), 14 deletions(-)
 create mode 100644 drivers/s390/cio/vfio_ccw_trace.c