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 [PATCH v1 0/9] landlock: Fix tracepoint policy context
  2026-09-18 18:51 · 7 replies in 7d · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH 0/2] tracing: Override trace_instance parameter
  2026-09-19 14:38 · 2 replies in 7d · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• HOTtoday [PATCH bpf-next 1/2] bpf: Reject bpf_skb_output() from return-side tracing
  2026-09-20 06:35 · 0 replies in 7d · Feng Yang <hidden>
• DORMANTno replies [PATCH] tracing: Fix crash in print_graph_function_event()
  2026-09-20 04:20 · 0 replies in 7d · Hao Ge <hao.ge@linux.dev>
• HOTtoday [PATCH] tracing: use assign_bit() where applicable
  2026-09-20 02:31 · 0 replies in 7d · Peng Fan (OSS) <hidden>
• WARM2d ptwrite uprobes v2
  2026-09-17 23:09 · 3 replies in 7d · Andi Kleen <ak@kernel.org>
• WARM1d [PATCH 0/2] riscv: ftrace: use frame CFA as the function graph retp identity
  2026-09-19 03:38 · 1 reply in 7d · Rui Qi <hidden>
• WARM1d [PATCH RFC v4 00/13] rcu-tasks: build Tasks RCU on Tasks Trace readers in trampolines
  2026-09-18 14:49 · 1 reply in 7d · Josef Bacik <josef@toxicpanda.com>
• WARM2d [PATCH] ring-buffer: Fix false warning in ring_buffer_map_get_reader()
  2026-09-18 14:34 · 0 replies in 7d · "syzbot" <syzbot@kernel.org>
• DORMANTno replies [PATCH v1] ring-buffer: Fix the sub-buffer array base in rb_meta_subbuf_idx()
  2026-09-18 07:15 · 0 replies in 7d · Donggeun Yoo <hidden>

Active reviewers (last 30 days)

• <sashiko-bot@kernel.org>
  19 attestations (19 Reported-by) · last on 2026-09-17
• Gabriele Monaco <gmonaco@redhat.com>
  13 attestations (1 Co-developed-by, 12 Reviewed-by) · last on 2026-09-14
• Johan Hovold <johan@kernel.org>
  6 attestations (3 Reviewed-by, 3 Tested-by) · last on 2026-09-14
• 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
• Masami Hiramatsu (Google) <mhiramat@kernel.org>
  4 attestations (1 Acked-by, 2 Reviewed-by, 1 Suggested-by) · last on 2026-09-17
• Jinchao Wang <hidden>
  4 attestations (4 Reviewed-by) · last on 2026-09-14
• Nam Cao <hidden>
  3 attestations (3 Reviewed-by) · last on 2026-09-14

Recent patches

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

• HOTtoday [PATCH bpf-next 1/2] bpf: Reject bpf_skb_output() from return-side tracing
  2026-09-20 · Feng Yang <hidden>
• DORMANTno replies [PATCH] tracing: Fix crash in print_graph_function_event()
  2026-09-20 · Hao Ge <hao.ge@linux.dev>
• HOTtoday [PATCH] tracing: use assign_bit() where applicable
  2026-09-20 · Peng Fan (OSS) <hidden>
• DORMANTno replies [PATCH 2/2] selftests/ftrace: Add test case for overriding trace_instance parameter
  2026-09-19 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM1d [PATCH 1/2] tracing: Override the same name trace_instance= by latter one
  2026-09-19 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM1d [PATCH 1/2] ftrace: Clarify function graph retp identity
  2026-09-19 · Rui Qi <hidden>
• WARM1d [PATCH v1 9/9] landlock: Fix tracepoint contract documentation
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 6/9] landlock: Report the effective signal number
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 2/9] landlock: Fix filesystem denial blocker reporting
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 3/9] landlock: Fix rule tracepoint context
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 4/9] landlock: Fix network denial trace context
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 1/9] landlock: Fix tracepoint fixed-width type names
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH v1 5/9] landlock: Report the actual ptrace tracer
  2026-09-18 · Mickaël Salaün <mic@digikod.net>
• WARM1d [PATCH RFC v4 04/13] ftrace: Mark modules hosting direct-call trampolines for Tasks RCU
  2026-09-18 · Josef Bacik <josef@toxicpanda.com>
• WARM2d [PATCH] ring-buffer: Fix false warning in ring_buffer_map_get_reader()
  2026-09-18 · "syzbot" <syzbot@kernel.org>
• DORMANTno replies [PATCH v1] ring-buffer: Fix the sub-buffer array base in rb_meta_subbuf_idx()
  2026-09-18 · Donggeun Yoo <hidden>
• DORMANTno replies [PATCH] tracing/selftests: Fix incorrect invocation of exit_fail
  2026-09-18 · Woradorn Laodhanadhaworn <hidden>
• WARM2d [RFC PATCH v2 04/11] ptwrite uprobes: Add support to tracing infrastructure
  2026-09-17 · Andi Kleen <ak@kernel.org>
• WARM2d [RFC PATCH v2 11/11] ptwrite uprobes: Add kernel self tests
  2026-09-17 · Andi Kleen <ak@kernel.org>
• WARM2d [RFC PATCH v2 07/11] ptwrite uprobes: Add multinop support
  2026-09-17 · Andi Kleen <ak@kernel.org>
• WARM2d [PATCH v2] fprobe: Terminate the fgraph_data list when the reservation is not filled
  2026-09-17 · David Carlier <hidden>
• WARM2d [PATCH] tracing/probes: Add const to new_argv allocation type
  2026-09-17 · Kees Cook <kees@kernel.org>
• DORMANTno replies [RFC PATCH] ftrace: Fix lost recursion records in ftrace_record_recursion()
  2026-09-17 · Andrea Parri <parri.andrea@gmail.com>
• DORMANTno replies [PATCH] tracing: Print a signed histogram key as signed
  2026-09-17 · Donggeun Yoo <hidden>
• DORMANTno replies [PATCH v2] tracing: Compute the log2 histogram bucket in 64 bits
  2026-09-17 · Donggeun Yoo <hidden>
• DORMANTno replies [PATCH] tracing: Fix 64-bit and signed histogram fields on 32-bit kernels
  2026-09-17 · Donggeun Yoo <hidden>
• WARM3d [PATCH v2] ring-buffer: Take cpus_read_lock() when changing the subbuf order
  2026-09-16 · David Carlier <hidden>
• DORMANTno replies [PATCH v2 2/2] ring-buffer: Remove unnecessary cpumask_test_cpu
  2026-09-16 · Vincent Donnefort <hidden>
• COOLING4d [PATCH v2 1/2] ring-buffer: Clean up resize_disabled checks
  2026-09-16 · Vincent Donnefort <hidden>
• COOLING4d [PATCH v6 3/4] fgraph: Enhance funcgraph-retval with BTF-based type-aware output
  2026-09-16 · Donglin Peng <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.

• STALE188d 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
• STALE187d 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
• STALE174d 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
• STALE171d 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
• STALE164d 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
• STALE156d 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
• STALE152d 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
• STALE152d REVIEWED: 1 (0M) [PATCH AUTOSEL 6.18] btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
  2026-04-20 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• STALE125d REVIEWED: 9 (9M) [PATCH v3 02/28] filelock: add support for ignoring deleg breaks for dir change events
  2026-04-28 · Jeff Layton <jlayton@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.

• STALE208d [PATCH v3 1/3] ring-buffer: Flush and stop persistent ring buffer on panic
  2026-02-23 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE208d [PATCH v3 3/3] ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer
  2026-02-23 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• DORMANTno replies [PATCH] tracing: Fix syscall events activation by ensuring refcount hits zero
  2026-02-24 · Huiwen He <hidden>
• STALE205d [PATCH v4 2/3] ring-buffer: Handle RB_MISSED_* flags on commit field correctly
  2026-02-24 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE198d [PATCH v6 09/16] rv: Add enqueue/dequeue to snroc monitor
  2026-02-25 · Gabriele Monaco <gmonaco@redhat.com>
• STALE202d [PATCH net-next v2 02/10] devlink: store bus_name and dev_name pointers in struct devlink
  2026-02-25 · Jiri Pirko <jiri@resnulli.us>
• STALE206d [PATCH v2 4/4] mm: add tracepoints for zone lock
  2026-02-25 · Dmitry Ilvokhin <hidden>
• STALE194d [PATCH v5 3/3] ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer
  2026-02-26 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE204d [PATCH 04/61] ext4: update for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>
• STALE204d [PATCH 06/61] f2fs: update for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>