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 bpf-next 0/2] ftrace: deprecate the ftrace_enabled disable switch
  2026-07-30 16:36 · 1 reply in 7d · Andrey Grodzovsky <hidden>
• HOTtoday [PATCH v9 00/41] guest_memfd: In-place conversion support
  2026-07-29 00:35 · 2 replies in 7d · Ackerley Tng <hidden>
• COOLING6d [RFC PATCH] Documentation/rv: Explain epoll and aborted sleeps
  2026-07-24 16:00 · 1 reply in 7d · Chao Liu <hidden>
• WARM1d [PATCH v6 00/22] Introduce SCMI Telemetry support
  2026-07-24 14:45 · 1 reply in 7d · Cristian Marussi <cristian.marussi@arm.com>

Active reviewers (last 30 days)

• Mike Rapoport (Microsoft) <rppt@kernel.org>
  6 attestations (6 Reviewed-by) · last on 2026-07-08
• SeongJae Park <sj@kernel.org>
  6 attestations (6 Reviewed-by) · last on 2026-07-08
• Lorenzo Stoakes <ljs@kernel.org>
  3 attestations (3 Reviewed-by) · last on 2026-07-08
• Fuad Tabba <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-07-29
• Shivank Garg <hidden>
  2 attestations (2 Tested-by) · last on 2026-07-29
• Steven Rostedt <rostedt@goodmis.org>
  1 attestation (1 Suggested-by) · last on 2026-07-30
• Xiaoyao Li <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-29
• Binbin Wu <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-29

Recent patches

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

• HOTtoday [RFC PATCH bpf-next 1/2] ftrace: deprecate disabling via ftrace_enabled sysctl
  2026-07-30 · Andrey Grodzovsky <hidden>
• HOTtoday REVIEWED: 4 (0M) [PATCH v9 02/41] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-07-29 · Ackerley Tng <hidden>
• HOTtoday REVIEWED: 2 (0M) [PATCH v9 04/41] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
  2026-07-29 · Ackerley Tng <hidden>
• COOLING6d Re: [RFC PATCH] Documentation/rv: Explain epoll and aborted sleeps
  2026-07-24 · Chao Liu <hidden>
• WARM1d [PATCH v6 05/22] include: trace: Add Telemetry trace events
  2026-07-24 · Cristian Marussi <cristian.marussi@arm.com>
• WARM3d [PATCH v10 11/11] tracing/wprobe: Support BTF typecast in wprobe trigger command
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 10/11] tracing/wprobe: Support BTF typecast in fetchargs
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 09/11] selftests: ftrace: Add wprobe trigger testcase
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 08/11] tracing: wprobe: Add wprobe event trigger
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 04/11] selftests: tracing: Add syntax testcase for wprobe
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 03/11] selftests: tracing: Add a basic testcase for wprobe
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 02/11] x86: hw_breakpoint: Add a kconfig to clarify when a breakpoint fires
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• WARM3d [PATCH v10 01/11] tracing: wprobe: Add watchpoint probe event based on hardware breakpoint
  2026-07-22 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING7d [RFC PATCH 6/7] mm: add tracepoints and vmstat counters for async teardown
  2026-07-19 · Aditya Sharma <hidden>
• COOLING13d [PATCH v9 10/10] tracing/wprobe: Support BTF typecast in fetchargs
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 09/10] selftests: ftrace: Add wprobe trigger testcase
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 08/10] tracing: wprobe: Add wprobe event trigger
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 04/10] selftests: tracing: Add syntax testcase for wprobe
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 03/10] selftests: tracing: Add a basic testcase for wprobe
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 02/10] x86: hw_breakpoint: Add a kconfig to clarify when a breakpoint fires
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING13d [PATCH v9 01/10] tracing: wprobe: Add watchpoint probe event based on hardware breakpoint
  2026-07-17 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COOLING8d [RFC PATCH v2 08/13] mm/kwatch: add hardware breakpoint backend
  2026-07-17 · Jinchao Wang <hidden>
• COLD15d [PATCH v8 9/9] selftests: ftrace: Add wprobe trigger testcase
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v8 8/9] tracing: wprobe: Add wprobe event trigger
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v8 4/9] selftests: tracing: Add syntax testcase for wprobe
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v8 3/9] selftests: tracing: Add a basic testcase for wprobe
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v8 2/9] x86: hw_breakpoint: Add a kconfig to clarify when a breakpoint fires
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v8 1/9] tracing: wprobe: Add watchpoint probe event based on hardware breakpoint
  2026-07-16 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v7 10/10] selftests: ftrace: Add wprobe trigger testcase
  2026-07-15 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• COLD15d [PATCH v7 09/10] tracing: wprobe: Add wprobe event trigger
  2026-07-15 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>

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.

• STALE104d 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
• STALE73d 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
• STALE73d REVIEWED: 9 (9M) [PATCH v3 03/28] filelock: add a tracepoint to start of break_lease()
  2026-04-28 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• STALE73d REVIEWED: 9 (9M) [PATCH v3 05/28] fsnotify: new tracepoint in fsnotify()
  2026-04-28 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• COLD35d REVIEWED: 1 (0M) [PATCH v7 02/42] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-05-23 · Ackerley Tng <hidden> · 1 Reviewed-by
• COOLING4d REVIEWED: 1 (0M) [PATCH v8 02/46] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@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.

• STALE205d [v2 PATCH 1/2] tracing: Add show_event_filters to expose active event filters
  2026-01-05 · Aaron Tomlin <atomlin@atomlin.com>
• STALE198d [PATCH v3 1/3] PCI: trace: Add PCI controller LTSSM transition tracepoint
  2026-01-12 · Shawn Lin <shawn.lin@rock-chips.com>
• STALE180d [PATCH v5 v5 3/3] selftests/ftrace: Add accept cases for fprobe list syntax
  2026-01-18 · Seokwoo Chung (Ryan) <hidden>
• STALE177d [PATCH v5 10/15] rv: Add enqueue/dequeue to snroc monitor
  2026-01-22 · Gabriele Monaco <gmonaco@redhat.com>
• STALE179d [PATCH v4 3/5] tracing/kprobes: Skip setup_boot_kprobe_events() when no cmdline event
  2026-01-28 · Yaxiong Tian <hidden>
• STALE179d [PATCH v4 4/5] tracing/kprobes: Make setup_boot_kprobe_events() asynchronous when trace_async_init set
  2026-01-28 · Yaxiong Tian <hidden>
• STALE183d [PATCH v6 01/11] tracing: wprobe: Add watchpoint probe event based on hardware breakpoint
  2026-01-28 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE183d [PATCH v6 02/11] x86: hw_breakpoint: Add a kconfig to clarify when a breakpoint fires
  2026-01-28 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE183d [PATCH v6 03/11] selftests: tracing: Add a basic testcase for wprobe
  2026-01-28 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
• STALE183d [PATCH v6 04/11] selftests: tracing: Add syntax testcase for wprobe
  2026-01-28 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>