tracing · Maintained

Maintainers

• M Steven Rostedt <rostedt@goodmis.org>
• M Masami Hiramatsu <mhiramat@kernel.org>
• R Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Paths

• F Documentation/core-api/tracepoint.rst
• F Documentation/trace/*
• F fs/tracefs/
• F include/linux/trace*.h
• F include/trace/
• F kernel/trace/
• F kernel/tracepoint.c
• F scripts/tracing/
• F scripts/tracepoint-update.c
• F tools/testing/selftests/ftrace/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [RFC PATCH v8 0/4] blk-iocost: add BPF struct_ops cost model support
  2026-09-30 07:52 · 1 reply in 7d · Tao Cui <hidden>
• WARM2d [PATCH v9 0/3] memcg,writeback: flush foreign bdev mappings separately
  2026-09-25 06:45 · 1 reply in 7d · Julian Sun <hidden>
• HOTtoday [RFC PATCH v7 0/4] blk-iocost: BPF struct_ops cost model
  2026-09-24 05:46 · 1 reply in 7d · Tao Cui <hidden>

Active reviewers (last 30 days)

• <hidden>
  2 attestations (1 Reported-by, 1 Tested-by) · last on 2026-09-03
• <hidden>
  1 attestation (1 Reported-by) · last on 2026-09-13

Recent patches

Most-recent 30 patches in this subsystem on linux-block (capped at 30), ordered by date desc.

• HOTtoday [RFC PATCH v8 3/4] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-30 · Tao Cui <hidden>
• WARM2d [PATCH v9 3/3] writeback: add tracepoints for foreign bdev writeback
  2026-09-25 · Julian Sun <hidden>
• HOTtoday [RFC PATCH v7 3/4] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-24 · Tao Cui <hidden>
• WARM2d [PATCH v8 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-22 · Julian Sun <hidden>
• COOLING8d [PATCH v7 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-21 · Julian Sun <hidden>
• COOLING8d [RFC PATCH v6 3/5] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-18 · Tao Cui <hidden>
• COOLING11d [RFC PATCH v5 3/5] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-18 · Tao Cui <hidden>
• COOLING9d [PATCH v6 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-17 · Julian Sun <hidden>
• COOLING14d [RFC PATCH v4 3/5] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-16 · Tao Cui <hidden>
• DORMANTno replies [PATCH v5 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-15 · Julian Sun <hidden>
• COLD15d [PATCH v4 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-14 · Julian Sun <hidden>
• COLD15d [RFC PATCH v3 3/5] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-14 · Tao Cui <hidden>
• COLD17d [PATCH v3] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 · Donggeun Yoo <hidden>
• COLD17d [PATCH v2] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 · Donggeun Yoo <hidden>
• COLD17d [PATCH] blktrace: build the synthesized v1 record from the entry's own layout
  2026-09-13 · Donggeun Yoo <hidden>
• COLD19d [RFC PATCH v2 3/5] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-10 · Tao Cui <hidden>
• COLD21d [RFC PATCH 1/8] blk-iocost: add iocost_ioc_tick tracepoint for per-period device summary
  2026-09-08 · Tao Cui <hidden>
• DORMANTno replies REVIEWED: 1 (0M) [PATCH] blktrace: always record ftrace events as blk_io_trace2
  2026-09-03 · Adriano Cordova <hidden>
• STALE126d [PATCH v9] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-25 · Aaron Tomlin <atomlin@atomlin.com>
• STALE128d REVIEWED: 11 (8M) [PATCH v8] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-24 · Aaron Tomlin <atomlin@atomlin.com>
• STALE129d REVIEWED: 11 (8M) [PATCH v7] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-23 · Aaron Tomlin <atomlin@atomlin.com>
• DORMANTno replies [PATCH] tracing/blktrace: Use sysfs_emit() for sysfs show callbacks
  2026-05-19 · Yu Peng <hidden>
• STALE132d REVIEWED: 11 (8M) [PATCH v6 1/2] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-17 · Aaron Tomlin <atomlin@atomlin.com>
• STALE150d [PATCH v2] blktrace: reject buf_size smaller than blk_io_trace2
  2026-05-03 · Deepanshu Kartikey <hidden>
• STALE135d REVIEWED: 11 (8M) [PATCH v5 1/2] blk-mq: add tracepoint block_rq_tag_wait
  2026-04-27 · Aaron Tomlin <atomlin@atomlin.com>
• STALE164d REVIEWED: 11 (8M) [PATCH v4 1/2] blk-mq: add tracepoint block_rq_tag_wait
  2026-04-19 · Aaron Tomlin <atomlin@atomlin.com>
• STALE150d [PATCH] blktrace: reject buf_size smaller than blk_io_trace
  2026-03-22 · Deepanshu Kartikey <hidden>
• STALE165d REVIEWED: 11 (8M) [PATCH v3 1/2] blk-mq: add tracepoint block_rq_tag_wait
  2026-03-19 · Aaron Tomlin <atomlin@atomlin.com>
• STALE194d [PATCH v2] blk-mq: add tracepoint block_rq_tag_wait
  2026-03-19 · Aaron Tomlin <atomlin@atomlin.com>
• STALE195d [PATCH] blk-mq: add tracepoint block_rq_tag_wait
  2026-03-17 · Aaron Tomlin <atomlin@atomlin.com>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE129d REVIEWED: 11 (8M) [PATCH v7] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-23 · Aaron Tomlin <atomlin@atomlin.com> · 4 Reviewed-by, 1 Tested-by
• STALE128d REVIEWED: 11 (8M) [PATCH v8] blk-mq: add tracepoint block_rq_tag_wait
  2026-05-24 · Aaron Tomlin <atomlin@atomlin.com> · 4 Reviewed-by, 1 Tested-by
• DORMANTno replies REVIEWED: 1 (0M) [PATCH] blktrace: always record ftrace events as blk_io_trace2
  2026-09-03 · Adriano Cordova <hidden> · 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• DORMANTno replies [PATCH] tracing/blktrace: Use sysfs_emit() for sysfs show callbacks
  2026-05-19 · Yu Peng <hidden>