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)

• WARM1d [RFC PATCH v7 00/10] trace: stack trace deduplication for ftrace ring buffer
  2026-09-12 08:40 · 8 replies in 7d · Li Pengfei <hidden>
• HOTtoday [PATCH] tracing: Take trace_types_lock when dropping the buffer_meta reference
  2026-09-13 13:38 · 0 replies in 7d · David Carlier <hidden>
• WARM2d [PATCH v2 0/3] ring-buffer: Fix and unify size and page calculations
  2026-09-11 19:39 · 3 replies in 7d · Vincent Donnefort <hidden>
• HOTtoday [PATCH v3] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 09:02 · 0 replies in 7d · Donggeun Yoo <hidden>
• HOTtoday [PATCH v2] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 06:32 · 0 replies in 7d · Donggeun Yoo <hidden>
• HOTtoday [PATCH] blktrace: build the synthesized v1 record from the entry's own layout
  2026-09-13 02:58 · 0 replies in 7d · Donggeun Yoo <hidden>
• WARM1d [PATCH v7 0/6] sched: Add support for long task name
  2026-09-12 01:24 · 2 replies in 7d · André Almeida <andrealmeid@igalia.com>
• HOTtoday [PATCH 0/2] tracing: add ring-buffer memory usage statistics
  2026-09-11 15:50 · 2 replies in 7d · Xiang Gao <hidden>
• WARM1d [PATCH] ring-buffer: Check resize_disabled before publishing the new subbuf order
  2026-09-12 10:39 · 0 replies in 7d · David Carlier <hidden>
• WARM2d [PATCH v2 0/3] mm/mglru: add tracepoints for scan and aging paths
  2026-09-11 10:30 · 2 replies in 7d · Ridong Chen <ridong.chen@linux.dev>

Active reviewers (last 30 days)

• <sashiko-bot@kernel.org>
  15 attestations (15 Reported-by) · last on 2026-09-11
• Gabriele Monaco <gmonaco@redhat.com>
  14 attestations (1 Co-developed-by, 9 Reviewed-by, 4 Suggested-by) · last on 2026-09-06
• Shivank Garg <hidden>
  6 attestations (6 Tested-by) · last on 2026-09-10
• Fuad Tabba <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Xiaoyao Li <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Binbin Wu <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Johan Hovold <johan@kernel.org>
  4 attestations (2 Reviewed-by, 2 Tested-by) · last on 2026-09-04
• kernel test robot <hidden>
  3 attestations (3 Reported-by) · last on 2026-09-11
• Logan Gunthorpe <logang@deltatee.com>
  3 attestations (3 Reviewed-by) · last on 2026-09-09
• Jinchao Wang <hidden>
  3 attestations (3 Reviewed-by) · last on 2026-09-07

Recent patches

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

• HOTtoday [PATCH] tracing: Take trace_types_lock when dropping the buffer_meta reference
  2026-09-13 · David Carlier <hidden>
• HOTtoday [PATCH v3] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 · Donggeun Yoo <hidden>
• HOTtoday [PATCH v2] blktrace: fix the field offsets of the synthesized v1 record
  2026-09-13 · Donggeun Yoo <hidden>
• HOTtoday [PATCH] blktrace: build the synthesized v1 record from the entry's own layout
  2026-09-13 · Donggeun Yoo <hidden>
• WARM1d [PATCH] ring-buffer: Check resize_disabled before publishing the new subbuf order
  2026-09-12 · David Carlier <hidden>
• HOTtoday [PATCH] tracing: Fix NULL dereference when copying keys for a field variable
  2026-09-12 · Donggeun Yoo <hidden>
• WARM1d [RFC PATCH v7 10/10] selftests/ftrace: add a stackmap instance gating test
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 09/10] selftests/ftrace: add a stackmap reset and binary ABI test
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 08/10] selftests/ftrace: add a stackmap basic functionality test
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 05/10] trace: make the stackmap capacity settable on the kernel command line
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 04/10] trace: add stackmap binary export
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 03/10] trace: add stackmap statistics interface
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 02/10] trace: use the stackmap from the ftrace stack recording path
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [RFC PATCH v7 01/10] trace: add lock-free stackmap for stack trace deduplication
  2026-09-12 · Li Pengfei <hidden>
• WARM1d [PATCH v7 4/6] sched: Extend task command name with TASK_COMM_EXT_LEN
  2026-09-12 · André Almeida <andrealmeid@igalia.com>
• WARM1d [PATCH v7 2/6] treewide: Replace memcpy(..., current->comm) with copy_task_comm()
  2026-09-12 · André Almeida <andrealmeid@igalia.com>
• DORMANTno replies [PATCH] fprobe: Clear the unused part of the fgraph_data reservation
  2026-09-11 · David Carlier <hidden>
• DORMANTno replies [PATCH v2 3/3] ring-buffer: Unify ring buffer minimum page calculations
  2026-09-11 · Vincent Donnefort <hidden>
• DORMANTno replies [PATCH v2 2/3] tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  2026-09-11 · Vincent Donnefort <hidden>
• WARM2d [PATCH v2 1/3] tracing/remotes: Account for ring buffer page header in size calculation
  2026-09-11 · Vincent Donnefort <hidden>
• WARM2d [PATCH] tracing: Don't dereference trace_event_file in deferred trigger free
  2026-09-11 · Ali Ahmet Memiş <hidden>
• HOTtoday [PATCH v2 2/2] tracing: add per-CPU memory usage statistics in tracefs
  2026-09-11 · Xiang Gao <hidden>
• HOTtoday [PATCH v2 1/2] tracing: add ring-buffer memory usage statistics in tracefs
  2026-09-11 · Xiang Gao <hidden>
• DORMANTno replies [PATCH] ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  2026-09-11 · Leon Hwang <hidden>
• HOTtoday [PATCH RFC v2 05/15] ftrace: Mark modules hosting direct-call trampolines for Tasks RCU
  2026-09-11 · Josef Bacik <josef@toxicpanda.com>
• WARM2d [PATCH v2 2/3] rv: add per-monitor edge-stat facility and stats file
  2026-09-11 · Tobias Schaffner <tobias.schaffner@siemens.com>
• DORMANTno replies [PATCH v2 3/3] mm/mglru: add tracepoint for inc_max_seq()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• WARM2d [PATCH v2 2/3] mm/mglru: add tracepoint for scan_folios()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• WARM2d [PATCH] ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  2026-09-11 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• WARM2d REVIEWED: 16 (16M) [PATCH v3 11/15] tracing/fgraph: convert process/thread iterator to for_each_process_thread_rculock
  2026-09-11 · Ye Liu <hidden>

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.

• STALE180d REVIEWED: 9 (9M) [PATCH v3 09/12] ext4: widen trace event i_ino fields to u64
  2026-03-04 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• STALE180d REVIEWED: 5 (5M) [PATCH v3 11/12] nilfs2: widen trace event i_ino fields to u64
  2026-03-04 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• STALE181d REVIEWED: 10 (10M) Re: [PATCH v2] tracing: Generate undef symbols allowlist for simple_ring_buffer
  2026-03-13 · Nathan Chancellor <nathan@kernel.org> · 1 Reviewed-by, 1 Tested-by
• STALE180d REVIEWED: 10 (10M) [PATCH v3] tracing: Generate undef symbols allowlist for simple_ring_buffer
  2026-03-16 · Vincent Donnefort <hidden> · 1 Reviewed-by, 1 Tested-by
• STALE167d REVIEWED: 1 (0M) [PATCH AUTOSEL 6.19-5.10] btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
  2026-03-30 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• STALE164d REVIEWED: 9 (9M) [PATCH v3 2/3] tracing: Update futex syscall trace event to show more commands
  2026-03-31 · Steven Rostedt <rostedt@kernel.org> · 1 Reviewed-by
• STALE157d REVIEWED: 1 (1M) [PATCH net-next v2 1/2] mptcp: better mptcp-level RTT estimator
  2026-04-07 · "Matthieu Baerts (NGI0)" <matttbe@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 2 (0M) [PATCH v3] tracing/osnoise: Add option to align tlat threads
  2026-04-16 · Tomas Glozar <tglozar@redhat.com> · 2 Reviewed-by
• STALE149d REVIEWED: 9 (9M) [PATCH v2 03/28] filelock: add a tracepoint to start of break_lease()
  2026-04-16 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• STALE145d REVIEWED: 17 (17M) [PATCH AUTOSEL 6.18] tracing/probe: reject non-closed empty immediate strings
  2026-04-20 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-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.

• STALE206d [PATCH v2 2/4] tracing: Remove unnecessary check for EVENT_FILE_FL_FREED
  2026-02-16 · Petr Pavlu <petr.pavlu@suse.com>
• STALE206d [PATCH v2 3/4] tracing: Clean up access to trace_event_file from a file pointer
  2026-02-16 · Petr Pavlu <petr.pavlu@suse.com>
• STALE206d [PATCH v2 4/4] tracing: Free up file->private_data for use by individual events
  2026-02-16 · Petr Pavlu <petr.pavlu@suse.com>
• STALE198d [PATCH v17 3/3] mm: Improve RSS counter approximation accuracy for proc interfaces
  2026-02-17 · Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
• STALE202d [PATCH v2 1/4] ring-buffer: Fix to check event length before using
  2026-02-18 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• DORMANTno replies [PATCH] fgraph: Do not call handlers direct when not using ftrace_ops
  2026-02-18 · Steven Rostedt <rostedt@goodmis.org>
• STALE192d [PATCH v12 30/30] tracing: selftests: Add hypervisor trace remote tests
  2026-02-19 · Vincent Donnefort <hidden>
• STALE206d [PATCH v3 3/5] tracing: Remove unnecessary check for EVENT_FILE_FL_FREED
  2026-02-19 · Petr Pavlu <petr.pavlu@suse.com>
• STALE206d [PATCH v3 4/5] tracing: Clean up access to trace_event_file from a file pointer
  2026-02-19 · Petr Pavlu <petr.pavlu@suse.com>
• DORMANTno replies [PATCH v3 5/5] tracing: Free up file->private_data for use by individual events
  2026-02-19 · Petr Pavlu <petr.pavlu@suse.com>