From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3A68C433F5 for ; Tue, 10 May 2022 07:47:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233161AbiEJHvE (ORCPT ); Tue, 10 May 2022 03:51:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229513AbiEJHvE (ORCPT ); Tue, 10 May 2022 03:51:04 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B200189E6C; Tue, 10 May 2022 00:47:07 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 22D5960C11; Tue, 10 May 2022 07:47:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B127DC385C8; Tue, 10 May 2022 07:47:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652168826; bh=k1qHqMw8XlQub7Epu9Rj6/6HIjdS2deXd99AuNOhZWk=; h=From:To:Cc:Subject:Date:From; b=XSNGQz8vUy49BegzIrwUEtrjqi/8AWrG2IhO6CZGpu5Q74BpsRqoOZ1dutd9QQReJ NRJXMAlqe7jjf1vYZemzVtZUTbHsIvX/5CIlBL/jv32AatzR+qQzqc916q4bF5OYXw vDlQPN3YzW42LapeOLSzF8pjgmrRiPY9cOxcMIRykk3PwLHCmIDCxiWVFFWQRZtV2m lwoL4uUPvSYXwh+31dqulIpIoOIF7qUuedS6jiAvFmNd0Ad0fWiIxQXHL5wV4fPjem TDACK+8WulJg0SALGSUnwoJY6WQ+Mt0fCaTSg1nzReugs/FCdEVbJat0wGcKn4jMDs y4jE3d18xEUgg== From: Jiri Olsa To: Arnaldo Carvalho de Melo , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: linux-perf-users@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, Ingo Molnar , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , Ian Rogers Subject: [PATCHv2 0/3] perf tools: Fix prologue generation Date: Tue, 10 May 2022 09:46:56 +0200 Message-Id: <20220510074659.2557731-1-jolsa@kernel.org> X-Mailer: git-send-email 2.35.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org 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(-)