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 [PATCH v11 00/25] Introduce SCMI Telemetry support
  2026-09-06 10:07 · 1 reply in 7d · Cristian Marussi <cristian.marussi@arm.com>
• WARM1d [PATCH v3 0/4] dmaengine: rename dma_chan::dev to dma_chan::chan_dev for clarity
  2026-09-04 21:50 · 1 reply in 7d · <hidden>
• WARM2d [PATCH v2 0/3] dmaengine: rename dma_chan::dev to dma_chan::chan_dev for clarity
  2026-09-03 20:53 · 1 reply in 7d · <hidden>
• WARM3d [PATCH v7 00/23] KVM: s390: Introduce arm64 KVM
  2026-09-02 16:14 · 2 replies in 7d · Steffen Eiden <seiden@linux.ibm.com>
• WARM2d [PATCH v2 00/12] I2C - detailed transfer reporting in case of a fault
  2026-09-03 05:39 · 1 reply in 7d · Dmitry Guzman <hidden>

Active reviewers (last 30 days)

• Logan Gunthorpe <logang@deltatee.com>
  2 attestations (2 Reviewed-by) · last on 2026-09-04

Recent patches

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

• HOTtoday [PATCH v11 05/25] include: trace: Add Telemetry trace events
  2026-09-06 · Cristian Marussi <cristian.marussi@arm.com>
• WARM1d REVIEWED: 4 (4M) [PATCH v3 2/4] dmaengine: use dma_chan_name() helper to get per-channel device name
  2026-09-04 · <hidden>
• WARM2d REVIEWED: 4 (4M) [PATCH v2 2/3] dmaengine: use dma_chan_name() helper to get per-channel device name
  2026-09-03 · <hidden>
• WARM2d [PATCH v2 01/12] i2c: core: add I2C_XFER_V2 - support for detailed transfer reporting
  2026-09-03 · Dmitry Guzman <hidden>
• WARM3d Re: [PATCH v7 02/23] KVM: Make device name configurable
  2026-09-02 · Sean Christopherson <seanjc@google.com>
• WARM3d Re: [PATCH v7 02/23] KVM: Make device name configurable
  2026-09-02 · Steffen Eiden <seiden@linux.ibm.com>
• COOLING13d [PATCH v10 05/24] include: trace: Add Telemetry trace events
  2026-08-15 · Cristian Marussi <cristian.marussi@arm.com>
• COLD22d [PATCH v9 05/24] include: trace: Add Telemetry trace events
  2026-08-15 · Cristian Marussi <cristian.marussi@arm.com>
• COLD23d [PATCH 1/2] dmaengine: use dma_chan_name() helper to get per-channel device name
  2026-08-12 · <hidden>
• DORMANTno replies [PATCH] include: trace: Use string helpers in msg_dump trace events
  2026-08-08 · Cristian Marussi <cristian.marussi@arm.com>
• COLD29d [PATCH v8 05/23] include: trace: Add Telemetry trace events
  2026-08-08 · Cristian Marussi <cristian.marussi@arm.com>
• COLD19d [PATCH v7 05/23] include: trace: Add Telemetry trace events
  2026-08-02 · Cristian Marussi <cristian.marussi@arm.com>
• COLD32d [PATCH v6 05/22] include: trace: Add Telemetry trace events
  2026-07-24 · Cristian Marussi <cristian.marussi@arm.com>
• COLD27d IN LINUX-NEXT: 6 (6M) [PATCH v8 09/23] dma-mapping: Add internal shared allocation attribute
  2026-07-17 · "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
• COLD54d REVIEWED: 2 (0M) [PATCH v2 3/4] tracing/remotes: Add REMOTE_EVENT_CUSTOM_PRINTK() helper
  2026-07-08 · Vincent Donnefort <hidden>
• COLD52d [PATCH v5 06/23] include: trace: Add Telemetry trace events
  2026-07-03 · Cristian Marussi <cristian.marussi@arm.com>
• DORMANTno replies Re: [for-next][PATCH 04/15] tracepoint: Add lockdep rcu_is_watching() check to trace_##name##_enabled()
  2026-07-01 · Steven Rostedt <rostedt@kernel.org>
• STALE67d [PATCH v8 08/13] include: trace: Add new parameter to trace_scmi_fc_call
  2026-07-01 · Philip Radford <hidden>
• COLD52d [PATCH v7 09/22] dma-mapping: Add internal shared allocation attribute
  2026-07-01 · "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
• STALE66d REVIEWED: 9 (9M) [PATCH v4 1/2] tracing: Move non-trace_printk prototypes into trace_controls.h
  2026-06-25 · Steven Rostedt <rostedt@kernel.org>
• STALE66d REVIEWED: 9 (9M) [PATCH v4 2/2] tracing: Remove trace_printk.h from kernel.h
  2026-06-25 · Steven Rostedt <rostedt@kernel.org>
• STALE67d [PATCH 1/7] i2c: add I2C_XFER_V2 - support for detailed transfer reporting
  2026-06-23 · Dmitry Guzman <hidden>
• STALE67d [PATCH 2/2] tracing: Add CONFIG_TRACE_PRINTK_DEBUGGING to clean up kernel.h
  2026-06-21 · Steven Rostedt <rostedt@kernel.org>
• STALE81d [PATCH v7 08/13] include: trace: Add new parameter to trace_scmi_fc_call
  2026-06-17 · Philip Radford <hidden>
• STALE65d [PATCH v4 07/31] include: trace: Add Telemetry trace events
  2026-06-12 · Cristian Marussi <cristian.marussi@arm.com>
• STALE61d [PATCH v1 3/4] tracing/remotes: Add REMOTE_EVENT_CUSTOM_PRINTK() helper
  2026-06-12 · Vincent Donnefort <hidden>
• STALE88d [PATCH v2 8/9] media: Add HW run/done trace events
  2026-06-10 · Detlev Casanova <detlev.casanova@collabora.com>
• STALE88d [PATCH v2 7/9] media: Add stream on/off traces and run them in the ioctl
  2026-06-10 · Detlev Casanova <detlev.casanova@collabora.com>
• STALE88d REVIEWED: 1 (1M) [PATCH v2 4/9] media: Add tgid and fd to the v4l2-requests trace fields
  2026-06-10 · Detlev Casanova <detlev.casanova@collabora.com>
• STALE109d [PATCH v6 07/12] include: trace: Add new parameter to trace_scmi_fc_call
  2026-05-18 · Philip Radford <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) [PATCH v3] tracing: Fix nr_subbufs initialization in simple_ring_buffer_init_mm()
  2026-05-12 · David Carlier <hidden> · 1 Reviewed-by
• STALE88d REVIEWED: 1 (1M) [PATCH v2 4/9] media: Add tgid and fd to the v4l2-requests trace fields
  2026-06-10 · Detlev Casanova <detlev.casanova@collabora.com> · 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.

• STALE128d [PATCH 07/11] media: Add stream on/off traces and run them in the ioctl
  2026-02-12 · Detlev Casanova <detlev.casanova@collabora.com>
• STALE128d [PATCH 08/11] media: Add HW run/done trace events
  2026-02-12 · Detlev Casanova <detlev.casanova@collabora.com>
• STALE185d [PATCH v12 30/30] tracing: selftests: Add hypervisor trace remote tests
  2026-02-19 · Vincent Donnefort <hidden>
• STALE192d [PATCH v3 7/9] include: trace: Add new parameter to trace_scmi_fc_call
  2026-02-26 · Philip Radford <hidden>
• STALE179d [PATCH v13 30/32] tracing: selftests: Add hypervisor trace remote tests
  2026-03-06 · Vincent Donnefort <hidden>
• STALE179d [PATCH v13 31/32] fixup! tracing: Add a trace remote module for testing
  2026-03-06 · Vincent Donnefort <hidden>
• STALE179d [PATCH v13 32/32] fixup! tracing: Add a trace remote module for testing
  2026-03-06 · Vincent Donnefort <hidden>
• STALE178d [PATCH v14 30/30] tracing: selftests: Add hypervisor trace remote tests
  2026-03-09 · Vincent Donnefort <hidden>
• STALE83d [PATCH v3 07/24] include: trace: Add Telemetry trace events
  2026-03-29 · Cristian Marussi <cristian.marussi@arm.com>
• STALE156d [PATCH v15 2/5] ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer
  2026-03-31 · "Masami Hiramatsu (Google)" <mhiramat@kernel.org>