[V6,0/6] Add MAD stack trace points

Message

Ira Weiny March 17, 2019, 7:59 p.m. UTC

From: Ira Weiny <[e-mail]>

Latest version merged comments from Steven Rostedt.

Again we are leaving the snoop interface in and there is a sample eBPF which
shows how one can further filter at the tracepoints to distill the information
being traced.

Changes for V6:
	Merge using the trace structe in create_mad_addr_info()             
		Fixed version for TRACEPOINTS off                           

Changes for V5:
        checkpatch cleanup
        Remove if statements and use calls in TP_fast_assign for
        cleaner trace code

Changes for V4:
        Change dev_name to dev_index

Changes for V3:
        Rebased on current RDMA for next
        Change license text to SPDX tag
        Change dev_name to string from array
        Reorder fields for more compact ring buffer utilization
        Use a defined roce address type for safer memcpy/memset
        Adjust BPF to new umad format

Changes for v2:
        Update MAINTAINERS as indicated from Doug
        Now CC'ing the Tracing maintainers so they are aware of the additions


Ira Weiny (6):
  IB/MAD: Add send path trace points
  IB/MAD: Add recv path trace point
  IB/MAD: Add agent trace points
  IB/UMAD: Add umad trace points
  IB/MAD: Add SMP details to MAD tracing
  BPF: Add sample code for new ib_umad tracepoint

 MAINTAINERS                        |   4 +
 drivers/infiniband/core/mad.c      |  61 ++++-
 drivers/infiniband/core/user_mad.c |   7 +
 include/trace/events/ib_mad.h      | 390 +++++++++++++++++++++++++++++
 include/trace/events/ib_umad.h     | 122 +++++++++
 samples/bpf/Makefile               |   3 +
 samples/bpf/ibumad_kern.c          | 125 +++++++++
 samples/bpf/ibumad_user.c          | 122 +++++++++
 8 files changed, 833 insertions(+), 1 deletion(-)
 create mode 100644 include/trace/events/ib_mad.h
 create mode 100644 include/trace/events/ib_umad.h
 create mode 100644 samples/bpf/ibumad_kern.c
 create mode 100644 samples/bpf/ibumad_user.c