kernel/linux.git/Documentation/trace, branch v6.18.21

Documentation: tracing: Add PCI tracepoint documentation

2026-02-26T22:59:16+00:00

[ Upstream commit 8236fc613d44e59f6736d6c3e9efffaf26ab7f00 ] The PCI tracing system provides tracepoints to monitor critical hardware events that can impact system performance and reliability. Add documentation about it. Signed-off-by: Shuai Xue [bhelgaas: squash fixes: https://lore.kernel.org/r/20260108013956.14351-2-bagasdotme@gmail.com https://lore.kernel.org/r/20260108013956.14351-3-bagasdotme@gmail.com] Signed-off-by: Bjorn Helgaas Reviewed-by: Ilpo Järvinen Link: https://patch.msgid.link/20251210132907.58799-4-xueshuai@linux.alibaba.com Signed-off-by: Sasha Levin

Documentation: trace: histogram: Convert ftrace docs cross-reference

2025-09-18T17:49:26+00:00

In brief "Extended error information" section, details on error condition is referred to ftrace docs, which is written in :file: directive instead of a proper cross-reference. Convert it. Reviewed-by: Tom Zanussi Signed-off-by: Bagas Sanjaya Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Message-ID: <20250916054202.582074-7-bagasdotme@gmail.com>

Documentation: trace: histogram-design: Wrap introductory note in note:: directive

2025-09-18T17:49:26+00:00

Use Sphinx note:: directive for the introductory note at the beginning of docs, instead of aligned-text paragraph that renders as definition list. Reviewed-by: Tom Zanussi Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Bagas Sanjaya Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Message-ID: <20250916054202.582074-6-bagasdotme@gmail.com>

Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram

2025-09-18T17:49:26+00:00

Section heading for sched_waking histogram is shown as normal paragraph instead due to codeblock marker for the following diagram being in the same line as the section underline. Separate them. Fixes: daceabf1b494 ("tracing/doc: Fix ascii-art in histogram-design.rst") Reviewed-by: Tom Zanussi Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Bagas Sanjaya Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Message-ID: <20250916054202.582074-5-bagasdotme@gmail.com>

Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text

2025-09-18T17:49:26+00:00

Diagram explanation text is supposed to be interleaved commentary between diagram parts that are spread out, but it outputs ugly in htmldocs due to trailing vertices as if both the explanation and the diagram are in the same literal code block. Trim trailing vertices. Reviewed-by: Tom Zanussi Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Bagas Sanjaya Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Message-ID: <20250916054202.582074-4-bagasdotme@gmail.com>

Documentation: trace: histogram: Fix histogram trigger subsection number order

2025-09-18T17:49:26+00:00

Section numbering in subsections of "Histogram Trigger Command" sections is inconsistent in order. In particular, "'hist' trigger examples" is erroneously numbered as 6.2, which is a leftover from b8df4a3634e08a ("tracing: Move hist trigger Documentation to histogram.txt"). Fix the order. Reviewed-by: Tom Zanussi Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Bagas Sanjaya Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Message-ID: <20250916054202.582074-3-bagasdotme@gmail.com>

tracing: fix grammar error in debugging.rst

2025-09-03T21:31:48+00:00

Signed-off-by: Ryan Chung Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20250831101736.11519-3-seokwoo.chung130@gmail.com

tracing: rephrase for clearer documentation

2025-09-03T21:31:30+00:00

Signed-off-by: Ryan Chung Acked-by: Steven Rostedt (Google) Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20250831101736.11519-2-seokwoo.chung130@gmail.com

docs: Corrected typo in trace/events

2025-08-21T17:59:11+00:00

-Changed 'Dyamically' to 'Dynamically' in trace/events.rst under sections 7.1 and 7.3 Signed-off-by: Mehdi Ben Hadj Khelifa Reviewed-by: Randy Dunlap Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20250819085040.974388-1-mehdi.benhadjkhelifa@gmail.com

Merge branch 'bjorn' into docs-mw

2025-08-18T16:40:16+00:00

A big set of typo fixes from Bjorn Helgaas