netdev - [PATCH perf/core 0/5] perf tools: Fix prologue generation

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Date:   Fri, 22 Apr 2022 12:00:20 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     linux-perf-users@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH perf/core 0/5] perf tools: Fix prologue generation

hi,
sending change we discussed some time ago [1] to get rid of
some deprecated functions we use in perf prologue code.

Despite the gloomy discussion I think the final code does
not look that bad ;-)

This patchset removes following libbpf functions from perf:
  bpf_program__set_prep
  bpf_program__nth_fd
  struct bpf_prog_prep_result

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/depre

thanks,
jirka


[1] https://lore.kernel.org/bpf/CAEf4BzaiBO3_617kkXZdYJ8hS8YF--ZLgapNbgeeEJ-pY0H88g@mail.gmail.com/
---
Jiri Olsa (5):
      libbpf: Add bpf_program__set_insns function
      libbpf: Load prog's instructions after prog_prepare_load_fn callback
      perf tools: Move libbpf init in libbpf_init function
      perf tools: Register perfkprobe libbpf section handler
      perf tools: Rework prologue generation code

 tools/lib/bpf/libbpf.c                      |  10 +++++
 tools/lib/bpf/libbpf.h                      |  12 ++++++
 tools/lib/bpf/libbpf.map                    |   3 +-
 tools/perf/include/bpf/bpf.h                |   2 +-
 tools/perf/tests/bpf-script-example.c       |   2 +-
 tools/perf/tests/bpf-script-test-prologue.c |   2 +-
 tools/perf/util/bpf-loader.c                | 213 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------
 7 files changed, 212 insertions(+), 32 deletions(-)