From: Ira Weiny <ira.weiny@xxxxxxxxx>
A while ago I wrote these patches for MAD stack tracing. At the time I was
proposing to remove the snoop interface.[1]
For this submission I'd like to propose adding the tracing and leave the snoop
interface in. While I still don't see a need for the snoop interface, I'm no
longer advocating getting rid of it as the functionality of these patches is
different.
In addition I wrote a sample eBPF which shows how one can further filter at the
tracepoints to distill the information being traced.
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
[1] https://www.spinics.net/lists/linux-rdma/msg29109.html
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 | 95 +++++++++-
drivers/infiniband/core/user_mad.c | 7 +
include/trace/events/ib_mad.h | 362 +++++++++++++++++++++++++++++++++++++
include/trace/events/ib_umad.h | 112 ++++++++++++
samples/bpf/Makefile | 3 +
samples/bpf/ibumad_kern.c | 123 +++++++++++++
samples/bpf/ibumad_user.c | 120 ++++++++++++
8 files changed, 825 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
--
1.8.3.1
