On 01/04/2022 16:01, Sean Morrissey wrote:
Telemetry commands are now registered through the dmadev library
for the gathering of DSA stats. The corresponding callback
functions for listing dmadevs and providing info and stats for a
specific dmadev are implemented in the dmadev library.

An example usage can be seen below:

Connecting to /var/run/dpdk/rte/dpdk_telemetry.v2
{"version": "DPDK 22.03.0-rc2", "pid": 2956551, "max_output_len": 16384}
Connected to application: "dpdk-dma"
--> /
{"/": ["/", "/dmadev/info", "/dmadev/list", "/dmadev/stats", ...]}
--> /dmadev/list
{"/dmadev/list": [0, 1]}
--> /dmadev/info,0
{"/dmadev/info": {"name": "0000:00:01.0", "nb_vchans": 1, "numa_node": 0,
"max_vchans": 1, "max_desc": 4096, "min_desc": 32, "max_sges": 0,
"capabilities": {"mem2mem": 1, "mem2dev": 0, "dev2mem": 0, ...}}}
--> /dmadev/stats,0,0
{"/dmadev/stats": {"submitted": 0, "completed": 0, "errors": 0}}

Signed-off-by: Sean Morrissey <sean.morris...@intel.com>
Tested-by: Sunil Pai G <sunil.pa...@intel.com>
Reviewed-by: Bruce Richardson <bruce.richard...@intel.com>
Reviewed-by: Conor Walsh <conor.wa...@intel.com>
---
V5:
* move capa_names struct back to function
V4:
* get capability name from function
   instead of hardcoded
* fix checkpatch warnings
V3:
* update docs with correct examples
* code cleanup and added comments
V2:
* add device capabilities to info command
* no requirement to pass vchan id
   if the device only has one vchan
* minor code cleanup
---
  doc/guides/prog_guide/dmadev.rst       |  24 +++++
  doc/guides/rel_notes/release_22_07.rst |   5 +
  lib/dmadev/meson.build                 |   2 +
  lib/dmadev/rte_dmadev.c                | 130 +++++++++++++++++++++++++
  4 files changed, 161 insertions(+)

Thanks for adding this, Sean.

Tested-by: Kevin Laatz <kevin.la...@intel.com>

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