linux-kernel - [PATCH RFC 0/2] Prep perf trace for a generic BPF+BTF pretty printer

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Message-ID: <20240906195020.481841-1-acme@kernel.org>
Date: Fri,  6 Sep 2024 16:50:18 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Clark Williams <williams@...hat.com>,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Howard Chu <howardchu95@...il.com>,
	Andrii Nakryiko <andrii@...nel.org>,
	Alan Maguire <alan.maguire@...cle.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH RFC 0/2] Prep perf trace for a generic BPF+BTF pretty printer

From: Arnaldo Carvalho de Melo <acme@...hat.com>

Hi,

	This is an attempt at paving the way for the remaining parts of
Howard's work on this years GSoC to be merged, as we want to keep the
existing pretty printers for the few structs we have, that have special
characteristics (see the commit logs) while having the generic BPF + BTF
collector/pretty printer, using the libbpf BPF dumper (see more ideas on
the commit log on how to improve it, maybe even getting
tools/perf/trace/beauty/ into tools/lib/beauty/ to get reused by
libbpf).

	I plan to work on the weekend to plugging his latest series on
top of these patches so that we can get it merged in the next merge
window.

	Any comment/test is more than welcome,

- Arnaldo

Arnaldo Carvalho de Melo (2):
  perf trace augmented_syscalls.bpf: Move the renameat augmenter to
    renameat2, temporarily
  perf trace: Use a common encoding for augmented arguments, with size +
    error + payload

 tools/perf/trace/beauty/perf_event_open.c     |   2 +-
 tools/perf/trace/beauty/sockaddr.c            |   2 +-
 tools/perf/trace/beauty/timespec.c            |   2 +-
 .../bpf_skel/augmented_raw_syscalls.bpf.c     | 108 +++++++++++-------
 4 files changed, 68 insertions(+), 46 deletions(-)

-- 
2.46.0