Re: Summary of perf-tools-next changes and patches sent to linux-perf-users

[Arnaldo Carvalho de Melo <acme@kernel.org>]

On Mon, May 25, 2026 at 09:15:35PM -0300, Arnaldo Carvalho de Melo wrote:
> On Mon, May 25, 2026 at 04:35:51PM -0700, Ian Rogers wrote:
> > I've been working on a script [1] to summarize what's been sent to the
> > linux-perf-users mailing list (using nntp) and compare it to what's
> > merged into the perf-tools-next branch (using git). The idea is to
> > make it slightly easier to track down patches that might have been
> > missed. The script shows what has been merged and what's pending, what
> > Sashiko thinks, and whose turn it is to work on the patch (author,
> > reviewer or maintainer) using some naive tag analysis. The output is
> > quite large, so rather than adding it below, I will send the last 4
> > weeks in separate e-mail replies to this message.
> 
> I'm doing this locally as well, helps.

For instance, from earlier today: 

$ cat /tmp/outstanding.txt

Outstanding patches for perf-tools-next — 2026-05-25
(checked against next2/perf-tools-next)
=====================================================

Tier 2 — Likely ready, needs closer look
-----------------------------------------

1. perf stat: Fix uncore metric scaling across aggregation modes
   Author: Chun-Tse Shao <ctshao@google.com>
   Version: v3, 2 patches
   Reviews: Namhyung reviewed v1; no reviews on v3 yet
   Message-ID: <20260521201505.124690-1-ctshao@google.com>

2. perf python: Improvements and callchain support
   Author: Ian Rogers <irogers@google.com>
   Version: v9, 23 patches
   Message-ID: <20260522220435.2378363-1-irogers@google.com>

3. perf data ctf: Replace libbabeltrace with babeltrace2-ctf-writer
   Author: Michael Jeanson <mjeanson@efficios.com>
   Version: v1, 1 patch + Ian's 2-patch feature test
   Message-ID: <20260512194710.162215-1-mjeanson@efficios.com>
   Ian's follow-up: <20260512215621.468685-1-irogers@google.com>

4. perf test: Harness improvements
   Author: Ian Rogers <irogers@google.com>
   Version: v1, 14 patches
   Message-ID: <20260513230450.529380-1-irogers@google.com>

Tier 3 — Single patches, needs review
--------------------------------------

5. perf bench: Add --write-size option to sched pipe
   Author: Breno Leitao <leitao@debian.org>
   Version: v1, 1 patch
   Message-ID: <20260515-perf_bench_pipe-v1-1-3c5b805ba178@debian.org>

6. perf evsel: Fix error handling in tp_format lookup
   Author: Hongling Zeng <zenghongling@kylinos.cn>
   Version: v1, 1 patch
   Message-ID: <20260521025738.17867-1-zenghongling@kylinos.cn>

7. perf kvm stat: Update the exit reason mappings
   Author: Gautam Menghani <gautam@linux.ibm.com>
   Version: v1, 1 patch
   Reviews: Ian reviewed (needs v2 per feedback)
   Message-ID: <20260512120408.59332-1-gautam@linux.ibm.com>

8. perf build: Fix Python extension build with GCC 16 hardening
   Author: Jan Polensky <japo@linux.ibm.com>
   Version: v1, 1 patch
   Reviews: Thomas Richter Reviewed-by
   Message-ID: <20260520125637.105681-1-japo@linux.ibm.com>

Already merged in next2/perf-tools-next
-----------------------------------------

- perf tests: uncore/topdown event sorting (Ian, v8) — 9f116f4b811b
- perf build: parallel build cleanup (Ian, v7) — 85cc481af5ff + 5 more
- perf build: Update kernel headers (Namhyung, v3) — aa13e4b120f9..5a433107fab6
- Fix SIGCHLD vs pause() race (Swapnil, v4) — 35c9fb22000f
- Fix kwork ASAN + libunwind test (Ian, v1) — e898c505b0ee, fdec0a81cad5
- Fix cgroup metric with BPF counters (Ian, v4) — 65bd18199ad5, bd2a5be1fe73
- tool_pmu enable/disable (Ian, v2) — 0b18bced5444
- libunwind multiple remote (Ian, v5) — fdec0a81cad5
- tools/build: LLVM versioning (James, v2) — 98e68cb77823
- perf inject intel-PT LBR/brstack (Ian, v3) — daac18e7c42c
- perf trace --show-cpu (Aaron, v4) — e445b78ffb8d
- stat delay duration_time test (Ian) — f83deb058025