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Date: Tue, 10 May 2022 09:46:56 +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: [PATCHv2 0/3] 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 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 meanwhile.. perf/core and bpf-next diverged, so: - libbpf bpf_program__set_insns change is based on bpf-next/master - perf changes do not apply on bpf-next/master so they are based on perf/core ... however they can be merged only after we release libbpf 0.8.0 with bpf_program__set_insns change, so we don't break the dynamic linking I'm sending perf changes now just for review, I'll resend them once libbpf 0.8.0 is released thanks, jirka [1] https://lore.kernel.org/bpf/CAEf4BzaiBO3_617kkXZdYJ8hS8YF--ZLgapNbgeeEJ-pY0H88g@mail.gmail.com/ --- Jiri Olsa (1): libbpf: Add bpf_program__set_insns function tools/lib/bpf/libbpf.c | 22 ++++++++++++++++++++++ tools/lib/bpf/libbpf.h | 18 ++++++++++++++++++ tools/lib/bpf/libbpf.map | 1 + 3 files changed, 41 insertions(+) Jiri Olsa (2): perf tools: Register fallback libbpf section handler perf tools: Rework prologue generation code tools/perf/util/bpf-loader.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 157 insertions(+), 18 deletions(-)
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