From: Alison Schofield <alison.schofi...@intel.com> Changes RFC->v1: - Resync with DaveJ's v5 monitor patchset. [1] (It provides the event tracing functionality used here.) - Resync with the kernel patchset adding poison list support. [2] - Add cxl-get-poison.sh unit test to cxl test suite. - JSON object naming cleanups, replace spaces with '_'. - Use common event pid field to restrict events to this cxl list instance. - Use json_object_get_int64() for addresses. - Remove empty hpa fields. Add back with dpa->hpa translation.
[1] https://lore.kernel.org/linux-cxl/166803877747.145141.11853418648969334939.st...@djiang5-desk3.ch.intel.com/ [2] https://lore.kernel.org/linux-cxl/cover.1668115235.git.alison.schofi...@intel.com/ The first patch adds a libcxl API for triggering the read of a poison list from a memory device. Users of that API will need to trace the kernel events to collect the error records. Patches 2 adds a PID filtering option to event tracing and then patches 3 & 4 add a pretty option, --media-errors to cxl list. The last patch (5) adds a unit test to the cxl test suite. Examples: cxl list -m mem2 --media-errors [ { "memdev":"mem2", "pmem_size":1073741824, "ram_size":0, "serial":2, "host":"cxl_mem.2", "media_errors":{ "nr_media_errors":2, "media_error_records":[ { "dpa":64, "length":128, "source":"Injected", "flags":"Overflow,", "overflow_time":1656711046 }, { "dpa":192, "length":192, "source":"Internal", "flags":"Overflow,", "overflow_time":1656711046 }, ] } } ] # cxl list -r region5 --media-errors [ { "region":"region5", "resource":1035623989248, "size":2147483648, "interleave_ways":2, "interleave_granularity":4096, "decode_state":"commit", "media_errors":{ "nr_media_errors":2, "media_error_records":[ { "memdev":"mem2", "dpa":0, "length":64, "source":"Internal", "flags":"", "overflow_time":0 }, { "memdev":"mem5", "dpa":0, "length":256, "source":"Injected", "flags":"", "overflow_time":0 } ] } } ] Alison Schofield (5): libcxl: add interfaces for GET_POISON_LIST mailbox commands cxl: add an optional pid check to event parsing cxl/list: collect and parse the poison list records cxl/list: add --media-errors option to cxl list test: add a cxl-get-poison test Documentation/cxl/cxl-list.txt | 64 ++++++++++++ cxl/event_trace.c | 5 + cxl/event_trace.h | 1 + cxl/filter.c | 2 + cxl/filter.h | 1 + cxl/json.c | 185 +++++++++++++++++++++++++++++++++ cxl/lib/libcxl.c | 44 ++++++++ cxl/lib/libcxl.sym | 6 ++ cxl/libcxl.h | 2 + cxl/list.c | 2 + test/cxl-get-poison.sh | 78 ++++++++++++++ test/meson.build | 2 + 12 files changed, 392 insertions(+) create mode 100644 test/cxl-get-poison.sh -- 2.37.3
