Subject: [PATCHv4 bpf-next 0/2] perf tools: Fix prologue generation

From: Jiri Olsa <[email-masked]>
Date: Fri, 3 Jun 2022 22:45:07 +0200

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

v4 changes:
  - fix typo [Andrii]

v3 changes:
  - removed R0/R1 zero init in libbpf_prog_prepare_load_fn,
    because it's not needed [Andrii]
  - rebased/post on top of bpf-next/master which now has
    all the needed perf/core changes

v2 changes:
  - use fallback section prog handler, so we don't need to
    use section prefix [Andrii]
  - realloc prog->insns array in bpf_program__set_insns [Andrii]
  - squash patch 1 from previous version with
    bpf_program__set_insns change [Daniel]
  - patch 3 already merged [Arnaldo]
  - added more comments

thanks,
jirka

[1] https://lore.kernel.org/bpf/[email-masked]/
---
Jiri Olsa (2):
      perf tools: Register fallback libbpf section handler
      perf tools: Rework prologue generation code

 tools/perf/util/bpf-loader.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 155 insertions(+), 18 deletions(-)