[Crash-utility] [PATCH 0/2] Get diskio statistics from the hw queues in blk-mq

Currently, crash doesn't support to display disk I/O statistics for blk-mq devices. The patchset will implement it by parsing the bitmap, it includes two patches: [1] [PATCH 1/2] Support for "dev -d|-D" options by parsing bitmap in blk-mq layer [2] [PATCH 2/2] Fix for "dev -d|-D" options to correctly display disk I/O statistics Related kernel commits: [1] commit <9a14d6ce4135> ("block: remove debugfs blk_mq_ctx dispatched/merged/completed attributes") [2] commit <4e5cc99e1e48> ("blk-mq: manage hctx map via xarray") [3] commit <3301bc53358a> ("lib/sbitmap: kill 'depth' from sbitmap_word") The patchset is tested on v5.17.0-rc8 and the latest kernel 5.18.0-rc4. Lianbo Jiang (2): Support for "dev -d|-D" options by parsing bitmap in blk-mq layer Fix for "dev -d|-D" options to correctly display disk I/O statistics defs.h | 14 ++ dev.c | 373 ++++++++++++++++++++++++++++++++++++++++++++++++------ symbols.c | 28 ++++ 3 files changed, 376 insertions(+), 39 deletions(-) -- 2.20.1