[ndctl,v7,0/7] Support poison list retrieval

Message

Alison Schofield Feb. 8, 2024, 1:01 a.m. UTC

From: Alison Schofield <[e-mail]>

Changes since v6:
- Remove region and memdev names from json media-error record (Dan)
- Rename dpa_length to length in json media-error record (Dan)
- Add the endpoint decoder name to json media-error record (Dan)
- Document the 'Source' field in the cxl-list man page (Dan)
- Add media-errors to -vvv option
- cxl/test: Set nr_found to 0 directly, when poison list is empty
- cxl/test: Remove leftover -r in cxl list command
- Picked up a few Reviewed-by tags (DaveJ)
Link to v6: https://lore.kernel.org/linux-cxl/[e-mail]/


Add the option to add a memory devices poison list to the cxl-list
json output. Offer the option by memdev and by region. Sample usage:

# cxl list -m mem1 --media-errors
[
  {
    "memdev":"mem1",
    "pmem_size":1073741824,
    "ram_size":1073741824,
    "serial":1,
    "numa_node":1,
    "host":"cxl_mem.1",
    "media_errors":[
      {
        "dpa":0,
        "length":64,
        "source":"Internal"
      },
      {
        "decoder":"decoder10.0",
        "hpa":1035355557888,
        "dpa":1073741824,
        "length":64,
        "source":"External"
      },
      {
        "decoder":"decoder10.0",
        "hpa":1035355566080,
        "dpa":1073745920,
        "length":64,
        "source":"Injected"
      }
    ]
  }
]

# cxl list -r region5 --media-errors
[
  {
    "region":"region5",
    "resource":1035355553792,
    "size":2147483648,
    "type":"pmem",
    "interleave_ways":2,
    "interleave_granularity":4096,
    "decode_state":"commit",
    "media_errors":[
      {
        "decoder":"decoder10.0",
        "hpa":1035355557888,
        "dpa":1073741824,
        "length":64,
        "source":"External"
      },
      {
        "decoder":"decoder8.1",
        "hpa":1035355566080,
        "dpa":1073745920,
        "length":64,
        "source":"Internal"
      }
    ]
  }
]

Alison Schofield (7):
  libcxl: add interfaces for GET_POISON_LIST mailbox commands
  cxl: add an optional pid check to event parsing
  cxl/event_trace: add a private context for private parsers
  cxl/event_trace: add helpers get_field_[string|data]()
  cxl/list: collect and parse media_error records
  cxl/list: add --media-errors option to cxl list
  cxl/test: add cxl-poison.sh unit test

 Documentation/cxl/cxl-list.txt |  79 +++++++++-
 cxl/event_trace.c              |  53 ++++++-
 cxl/event_trace.h              |   9 +-
 cxl/filter.h                   |   3 +
 cxl/json.c                     | 261 +++++++++++++++++++++++++++++++++
 cxl/lib/libcxl.c               |  47 ++++++
 cxl/lib/libcxl.sym             |   6 +
 cxl/libcxl.h                   |   2 +
 cxl/list.c                     |   3 +
 test/cxl-poison.sh             | 137 +++++++++++++++++
 test/meson.build               |   2 +
 11 files changed, 598 insertions(+), 4 deletions(-)
 create mode 100644 test/cxl-poison.sh


base-commit: a871e6153b11fe63780b37cdcb1eb347b296095c