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Re: [PATCH 4/4] trace2: emit cmd_ancestry data for Windows

From
KHKristoffer Haugsbakk <kristofferhaugsbakk@fastmail.com>
Date
Feb 5, 2026, 16:19 UTC
Message-ID
<8775e4d7-4793-413d-a0ff-c1d325ed04e5@app.fastmail.com>
In-Reply-To
<a06344dc753698ece37f8d066b0a51931b7fa16f.1770307510.git.gitgitgadget@gmail.com>
On Thu, Feb 5, 2026, at 17:05, Matthew John Cheetham via GitGitGadget wrote:
> From: Matthew John Cheetham <mjcheetham@outlook.com>
>
> Since 2f732bf1 (tr2: log parent process name) it is now possible to emit

The usual way to refer to commits is to use `git show -s --pretty=reference`. (Or maybe with `--abbrev=8` as well which seems to be the case here.) That also adds the date. See `SubmittingPatches`.

Show 9 quoted lines
> a specific process ancestry event in TRACE2. We should emit the Windows
> process ancestry data with the correct event type.
>
> To not break existing consumers of the data_json "windows/ancestry"
> event, we continue to emit the ancestry data as a JSON event.
>
> Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>
> ---
>[snip]
Previous: Matthew John Cheetham via GitGitGadgetNext: Derrick Stolee
Message 11 of 25 in “trace2: add macOS and Windows process ancestry tracing”
  1. 0/4 trace2: add macOS and Windows process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  2. 2/4 build: include procinfo.c impl for macOSMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  3. Derrick StoleeFeb 9, 2026
  4. 1/4 trace2: add macOS process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  5. Derrick StoleeFeb 9, 2026
  6. Matthew John CheethamFeb 9, 2026
  7. Derrick StoleeFeb 10, 2026
  8. 3/4 trace2: refactor Windows process ancestry trace2 eventMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  9. Derrick StoleeFeb 9, 2026
  10. 4/4 trace2: emit cmd_ancestry data for WindowsMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  11. Kristoffer HaugsbakkFeb 5, 2026
  12. Derrick StoleeFeb 9, 2026
  13. Derrick StoleeFeb 9, 2026
  14. Junio C HamanoFeb 9, 2026
  15. 0/6 trace2: add macOS and Windows process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  16. 1/6 trace2: add macOS process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  17. 2/6 build: include procinfo.c impl for macOSMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  18. Junio C HamanoFeb 13, 2026
  19. 3/6 trace2: refactor Windows process ancestry trace2 eventMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  20. Junio C HamanoFeb 13, 2026
  21. 4/6 trace2: emit cmd_ancestry data for WindowsMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  22. Junio C HamanoFeb 13, 2026
  23. 5/6 test-tool: extend trace2 helper with 400ancestryMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  24. 6/6 t0213: add trace2 cmd_ancestry testsMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  25. Derrick StoleeFeb 14, 2026

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