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] ring-buffer: serialize read-page order with subbuffer resize
  2026-06-30 14:14 · 1 reply in 7d · Yousef Alhouseen <hidden>
• WARM1d REVIEWED: 17 (17M) [PATCH 5.10.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-30 06:07 · 1 reply in 7d · Bjoern Doebel <hidden>
• WARM1d REVIEWED: 17 (17M) [PATCH 5.15.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-30 06:03 · 1 reply in 7d · Bjoern Doebel <hidden>
• COOLING5d Linux 6.18.37
  2026-06-27 10:21 · 1 reply in 7d · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING6d [PATCH] tracing/user_events: Use kfree_rcu for enabler cleanup
  2026-06-25 18:02 · 0 replies in 7d · Tristan Madani <hidden>

Active reviewers (last 30 days)

• David Howells <dhowells@redhat.com>
  12 attestations (6 Reported-by, 6 Tested-by) · last on 2026-06-30
• Nathan Chancellor <nathan@kernel.org>
  8 attestations (4 Reported-by, 4 Tested-by) · last on 2026-06-18
• Masami Hiramatsu (Google) <mhiramat@kernel.org>
  6 attestations (6 Reviewed-by) · last on 2026-06-30
• Kumar Kartikeya Dwivedi <memxor@gmail.com>
  2 attestations (2 Acked-by) · last on 2026-06-24
• Leon Hwang <hidden>
  2 attestations (2 Acked-by) · last on 2026-06-24
• Jiri Olsa <jolsa@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-06-24
• Arnd Bergmann <arnd@arndb.de>
  2 attestations (2 Reported-by) · last on 2026-06-18
• Mark Brown <broonie@kernel.org>
  2 attestations (2 Reported-by) · last on 2026-06-18
• <hidden>
  1 attestation (1 Reported-by) · last on 2026-06-28
• Sashiko <sashiko-bot@kernel.org>
  1 attestation (1 Reported-by) · last on 2026-06-16

Recent patches

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

• WARM1d Re: [PATCH] ring-buffer: serialize read-page order with subbuffer resize
  2026-06-30 · Steven Rostedt <rostedt@goodmis.org>
• WARM1d REVIEWED: 17 (17M) [PATCH v2 5.10.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-30 · Bjoern Doebel <hidden>
• WARM1d REVIEWED: 17 (17M) [PATCH v2 5.15.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-30 · Bjoern Doebel <hidden>
• WARM1d [PATCH] ring-buffer: serialize read-page order with subbuffer resize
  2026-06-28 · Yousef Alhouseen <hidden>
• DORMANTno replies Re: Linux 6.18.37
  2026-06-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING6d [PATCH] tracing/user_events: Use kfree_rcu for enabler cleanup
  2026-06-25 · Tristan Madani <hidden>
• DORMANTno replies Re: [PATCH] tracing/user_events: fix use-after-free of enabler in user_event_mm_dup()
  2026-06-24 · Beau Belgrave <hidden>
• WARM1d REVIEWED: 17 (17M) [PATCH 5.10.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-24 · Bjoern Doebel <hidden>
• WARM1d REVIEWED: 17 (17M) [PATCH 5.15.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-24 · Bjoern Doebel <hidden>
• COOLING7d REVIEWED: 17 (17M) [PATCH 6.1.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-24 · Bjoern Doebel <hidden>
• COOLING7d REVIEWED: 17 (17M) [PATCH 6.6.y] ring-buffer: Remove ring_buffer_read_prepare_sync()
  2026-06-24 · Bjoern Doebel <hidden>
• COOLING7d REVIEWED: 5 (4M) [PATCH stable 6.6 1/2] bpf: Reject sleepable kprobe_multi programs at attach time
  2026-06-24 · Shung-Hsi Yu <hidden>
• COOLING7d REVIEWED: 5 (4M) [PATCH stable 6.12 1/2] bpf: Reject sleepable kprobe_multi programs at attach time
  2026-06-24 · Shung-Hsi Yu <hidden>
• DORMANTno replies [PATCH] tracing: Fix NULL pointer dereference in func_set_flag()
  2026-06-24 · Yuanhe Shu <hidden>
• COOLING9d [PATCH v2] f2fs: don't drop the top folio order in the f2fs_iostat tracepoint
  2026-06-23 · Zhan Xusheng <hidden>
• COOLING13d Re: Linux 7.0.13
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.6.143
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.36
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.94
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING13d Re: Linux 6.1.176
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.210
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.10.259
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING7d [PATCH] tracing/user_events: fix use-after-free of enabler in user_event_mm_dup()
  2026-06-18 · Michael Bommarito <hidden>
• COOLING13d REVIEWED: 5 (5M) [PATCH 6.6.y 23/27] ftrace: Test mcount_loc addr before calling ftrace_call_addr()
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d REVIEWED: 5 (5M) [PATCH 6.6.y 24/27] ftrace: Check against is_kernel_text() instead of kaslr_offset()
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d [PATCH 6.6.y 22/27] ftrace: Do not over-allocate ftrace memory
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d [PATCH 6.6.y 21/27] ftrace: Have ftrace pages output reflect freed pages
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d [PATCH 6.6.y 20/27] ftrace: Update the mcount_loc check of skipped entries
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d [PATCH 6.6.y 19/27] scripts/sorttable: Zero out weak functions in mcount_loc table
  2026-06-18 · Andrey Grodzovsky <hidden>
• COOLING13d REVIEWED: 5 (5M) [PATCH 6.12.y 24/27] ftrace: Check against is_kernel_text() instead of kaslr_offset()
  2026-06-18 · Andrey Grodzovsky <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.

• DORMANTno replies REVIEWED: 1 (0M) [for-linus][PATCH 4/5] tracing: Add recursion protection in kernel stack trace recording
  2026-01-08 · Steven Rostedt <rostedt@kernel.org> · 1 Tested-by
• STALE171d REVIEWED: 5 (5M) FAILED: patch "[PATCH] NFSD: Remove NFSERR_EAGAIN" failed to apply to 6.6-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 2 Reviewed-by
• STALE171d REVIEWED: 5 (5M) FAILED: patch "[PATCH] NFSD: Remove NFSERR_EAGAIN" failed to apply to 5.15-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 2 Reviewed-by
• STALE171d REVIEWED: 5 (5M) FAILED: patch "[PATCH] NFSD: Remove NFSERR_EAGAIN" failed to apply to 6.1-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 2 Reviewed-by
• DORMANTno replies REVIEWED: 5 (5M) FAILED: patch "[PATCH] NFSD: Remove NFSERR_EAGAIN" failed to apply to 5.10-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 2 Reviewed-by
• DORMANTno replies REVIEWED: 1 (0M) FAILED: patch "[PATCH] tracing: Add recursion protection in kernel stack trace" failed to apply to 6.12-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 1 Tested-by
• DORMANTno replies REVIEWED: 1 (0M) FAILED: patch "[PATCH] tracing: Add recursion protection in kernel stack trace" failed to apply to 6.6-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 1 Tested-by
• DORMANTno replies REVIEWED: 1 (0M) FAILED: patch "[PATCH] tracing: Add recursion protection in kernel stack trace" failed to apply to 5.15-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 1 Tested-by
• DORMANTno replies REVIEWED: 1 (0M) FAILED: patch "[PATCH] tracing: Add recursion protection in kernel stack trace" failed to apply to 6.1-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 1 Tested-by
• DORMANTno replies REVIEWED: 1 (0M) FAILED: patch "[PATCH] tracing: Add recursion protection in kernel stack trace" failed to apply to 5.10-stable tree
  2026-01-12 · <gregkh@linuxfoundation.org> · 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.

• STALE208d [for-linus][PATCH 02/15] tracing: Fix fixed array of synthetic event
  2025-12-06 · Steven Rostedt <rostedt@kernel.org>
• DORMANTno replies Re: Linux 5.10.247
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.197
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE207d Re: Linux 6.1.159
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.61
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE207d Re: Linux 6.17.11
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.62
  2025-12-12 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.17.12
  2025-12-12 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.63
  2025-12-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE196d Re: Linux 6.18.2
  2025-12-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>