[ndctl PATCH v6 0/7] Support poison list retrieval

[alison.schofield@intel.com]

From: Alison Schofield <alison.schofield@intel.com>

Changes since v5:
- Use a private parser for cxl_poison events. (Dan)
  Previously used the default parser and re-parsed per the cxl-list
  needs. Replace that with a private parsing method for cxl_poison.
- Add a private context to support private parsers. 
- Add helpers to use with the cxl_poison parser.
- cxl list json: drop nr_records field (Dan)
- cxl list option: replace "poison" w "media-errors" (Dan)
- cxl list json: replace "poison" w "media_errors" (Dan)
- Link to v5: https://lore.kernel.org/linux-cxl/cover.1700615159.git.alison.schofield@intel.com/


Begin cover letter:

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,
        "dpa_length":64,
        "source":"Injected"
      },
      {
        "region":"region5",
        "dpa":1073741824,
        "dpa_length":64,
        "hpa":1035355557888,
        "source":"Injected"
      },
      {
        "region":"region5",
        "dpa":1073745920,
        "dpa_length":64,
        "hpa":1035355566080,
        "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":[
      {
        "memdev":"mem1",
        "dpa":1073741824,
        "dpa_length":64,
        "hpa":1035355557888,
        "source":"Injected"
      },
      {
        "memdev":"mem1",
        "dpa":1073745920,
        "dpa_length":64,
        "hpa":1035355566080,
        "source":"Injected"
      }
    ]
  }
]

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 |  71 +++++++++++
 cxl/event_trace.c              |  53 +++++++-
 cxl/event_trace.h              |   9 +-
 cxl/filter.h                   |   3 +
 cxl/json.c                     | 218 +++++++++++++++++++++++++++++++++
 cxl/lib/libcxl.c               |  47 +++++++
 cxl/lib/libcxl.sym             |   6 +
 cxl/libcxl.h                   |   2 +
 cxl/list.c                     |   2 +
 test/cxl-poison.sh             | 133 ++++++++++++++++++++
 test/meson.build               |   2 +
 11 files changed, 543 insertions(+), 3 deletions(-)
 create mode 100644 test/cxl-poison.sh


base-commit: a871e6153b11fe63780b37cdcb1eb347b296095c
-- 
2.37.3