Hi-
Refresh of the RDMA/core trace point patches.
I've been working on improving how RPC/RDMA handles device removal
and disconnect, so I've added some trace points in the core CMA
code to report rdma_cm_id lifetime-related events.
I've also had need to record creation and release of MRs. I had an
old patch to do that, so that is also included here. The patch
description can be improved, but it's ready for review comments, at
least.
Changes since v7:
- Capture the return value from the ULP's CM event handler
- Record the lifetime of each rdma_cm_id
- Include an example patch for capturing MR lifetime
Changes since v6:
- Move include/trace/events/rmda_cma.h to drivers/infiniband/core/cma_trace.h
- Add sample trace log output to the patch descriptions
- Back to the inlined version of ib_poll_cq()
Changes since v5:
- Add low-overhead trace points in the Connection Manager
- Address #include heartburn found by lkp
Changes since v4:
- Removed __ib_poll_cq, uninlined ib_poll_cq
Changes since v3:
- Reverted unnecessary behavior change in __ib_process_cq
- Clarified what "id" is in trace point output
- Added comment before new fields in struct ib_cq
- New trace point that fires when there is a CQ allocation failure
Changes since v2:
- Removed extraneous changes to include/trace/events/rdma.h
Changes since RFC:
- Display CQ's global resource ID instead of it's pointer address
---
Chuck Lever (3):
RDMA/cma: Add trace points in RDMA Connection Manager
RDMA/core: Trace points for diagnosing completion queue issues
RDMA/core: Add trace points to follow MR allocation
drivers/infiniband/core/Makefile | 4
drivers/infiniband/core/cma.c | 68 +++++-
drivers/infiniband/core/cma_trace.c | 16 ++
drivers/infiniband/core/cma_trace.h | 302 ++++++++++++++++++++++++++++
drivers/infiniband/core/cq.c | 27 ++-
drivers/infiniband/core/trace.c | 14 +
drivers/infiniband/core/verbs.c | 39 +++-
include/rdma/ib_verbs.h | 5
include/trace/events/rdma_core.h | 373 +++++++++++++++++++++++++++++++++++
9 files changed, 816 insertions(+), 32 deletions(-)
create mode 100644 drivers/infiniband/core/cma_trace.c
create mode 100644 drivers/infiniband/core/cma_trace.h
create mode 100644 drivers/infiniband/core/trace.c
create mode 100644 include/trace/events/rdma_core.h
--
Chuck Lever
