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 E81D1C433FE for ; Fri, 22 Apr 2022 10:00:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1445689AbiDVKDh (ORCPT ); Fri, 22 Apr 2022 06:03:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348202AbiDVKDg (ORCPT ); Fri, 22 Apr 2022 06:03:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38C5253B4E; Fri, 22 Apr 2022 03:00:44 -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 C687A61E0D; Fri, 22 Apr 2022 10:00:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D75BBC385A0; Fri, 22 Apr 2022 10:00:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650621643; bh=eUbVKBGrvVUxVF2TsSLPPb4Ds3rqV3aCUYt+UJyghLs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hxBz3l2kxMglAVT+iU0pp5Y2nD3XzeuClYC534Ajn4Tgchx/dczxyZdXHPtBUeIFM f9FYWVuoOP9k87y7qR6ijHRmisrB0ZC7UzdesQ4LNuLLmNfZezR0wze2bBtccDBVfc PoKXaONvj0OTiH2O1L4UF6tsUyvB8yxYFUP4kIjXIBz3BdcnzAhdK2FELPSbwW+QIW LPPkEZQgLGk769n2CAqWXB726G9tGpTo7g18no1zrl3EPyEGS1tZqwOPT5LEA7SXlw g+QeWU6Okq8fMz2JB72/1w6iHC4+wkcVFdKzfky2nP6KKzR63lCa0Bn22n5Rz+XRIp Soyu4RhrjtOfQ== 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: [PATCH perf/core 1/5] libbpf: Add bpf_program__set_insns function Date: Fri, 22 Apr 2022 12:00:21 +0200 Message-Id: <20220422100025.1469207-2-jolsa@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422100025.1469207-1-jolsa@kernel.org> References: <20220422100025.1469207-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Adding bpf_program__set_insns that allows to set new instructions for program. Also moving bpf_program__attach_kprobe_multi_opts on the proper name sorted place in map file. Signed-off-by: Jiri Olsa --- tools/lib/bpf/libbpf.c | 8 ++++++++ tools/lib/bpf/libbpf.h | 12 ++++++++++++ tools/lib/bpf/libbpf.map | 3 ++- 3 files changed, 22 insertions(+), 1 deletion(-) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 809fe209cdcc..284790d81c1b 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8457,6 +8457,14 @@ size_t bpf_program__insn_cnt(const struct bpf_program *prog) return prog->insns_cnt; } +void bpf_program__set_insns(struct bpf_program *prog, + struct bpf_insn *insns, size_t insns_cnt) +{ + free(prog->insns); + prog->insns = insns; + prog->insns_cnt = insns_cnt; +} + int bpf_program__set_prep(struct bpf_program *prog, int nr_instances, bpf_program_prep_t prep) { diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 05dde85e19a6..b31ad58d335f 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -323,6 +323,18 @@ struct bpf_insn; * different. */ LIBBPF_API const struct bpf_insn *bpf_program__insns(const struct bpf_program *prog); + +/** + * @brief **bpf_program__set_insns()** can set BPF program's underlying + * BPF instructions. + * @param prog BPF program for which to return instructions + * @param insn a pointer to an array of BPF instructions + * @param insns_cnt number of `struct bpf_insn`'s that form + * specified BPF program + */ +LIBBPF_API void bpf_program__set_insns(struct bpf_program *prog, + struct bpf_insn *insns, size_t insns_cnt); + /** * @brief **bpf_program__insn_cnt()** returns number of `struct bpf_insn`'s * that form specified BPF program. diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index dd35ee58bfaa..afa10d24ab41 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -444,7 +444,8 @@ LIBBPF_0.8.0 { global: bpf_object__destroy_subskeleton; bpf_object__open_subskeleton; + bpf_program__attach_kprobe_multi_opts; + bpf_program__set_insns; libbpf_register_prog_handler; libbpf_unregister_prog_handler; - bpf_program__attach_kprobe_multi_opts; } LIBBPF_0.7.0; -- 2.35.1