From patchwork Sat Feb 8 15:41:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 1235294 Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48FGdB6cBZz9sRQ for ; Sun, 9 Feb 2020 02:42:22 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727350AbgBHPmV convert rfc822-to-8bit (ORCPT ); Sat, 8 Feb 2020 10:42:21 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:32490 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727303AbgBHPmV (ORCPT ); Sat, 8 Feb 2020 10:42:21 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-296-Jck_Fx8gPgiAxy-kwpy1sw-1; Sat, 08 Feb 2020 10:42:16 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4BA47800D6C; Sat, 8 Feb 2020 15:42:14 +0000 (UTC) Received: from krava.redhat.com (ovpn-204-79.brq.redhat.com [10.40.204.79]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3A0EB5C21B; Sat, 8 Feb 2020 15:42:10 +0000 (UTC) From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, Andrii Nakryiko , Yonghong Song , Song Liu , Martin KaFai Lau , Jakub Kicinski , David Miller , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , John Fastabend , Jesper Dangaard Brouer Subject: [PATCH 00/14] bpf: Add trampoline and dispatcher to /proc/kallsyms Date: Sat, 8 Feb 2020 16:41:55 +0100 Message-Id: <20200208154209.1797988-1-jolsa@kernel.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: Jck_Fx8gPgiAxy-kwpy1sw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kernel.org Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org hi, this patchset adds trampoline and dispatcher objects to be visible in /proc/kallsyms. The last patch also adds sorting for all bpf objects in /proc/kallsyms. $ sudo cat /proc/kallsyms | tail -20 ... ffffffffa050f000 t bpf_prog_5a2b06eab81b8f51 [bpf] ffffffffa0511000 t bpf_prog_6deef7357e7b4530 [bpf] ffffffffa0542000 t bpf_trampoline_13832 [bpf] ffffffffa0548000 t bpf_prog_96f1b5bf4e4cc6dc_mutex_lock [bpf] ffffffffa0572000 t bpf_prog_d1c63e29ad82c4ab_bpf_prog1 [bpf] ffffffffa0585000 t bpf_prog_e314084d332a5338__dissect [bpf] ffffffffa0587000 t bpf_prog_59785a79eac7e5d2_mutex_unlock [bpf] ffffffffa0589000 t bpf_prog_d0db6e0cac050163_mutex_lock [bpf] ffffffffa058d000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf] ffffffffa05df000 t bpf_trampoline_25637 [bpf] ffffffffa05e3000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf] ffffffffa05e5000 t bpf_prog_3b185187f1855c4c [bpf] ffffffffa05e7000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf] ffffffffa05eb000 t bpf_prog_93cebb259dd5c4b2_do_sys_open [bpf] ffffffffa0677000 t bpf_dispatcher_xdp [bpf] thanks, jirka --- Björn Töpel (1): bpf: Add bpf_trampoline_ name prefix for DECLARE_BPF_DISPATCHER Jiri Olsa (13): x86/mm: Rename is_kernel_text to __is_kernel_text bpf: Add struct bpf_ksym bpf: Add name to struct bpf_ksym bpf: Add lnode list node to struct bpf_ksym bpf: Add bpf_kallsyms_tree tree bpf: Move bpf_tree add/del from bpf_prog_ksym_node_add/del bpf: Separate kallsyms add/del functions bpf: Add bpf_ksym_add/del functions bpf: Re-initialize lnode in bpf_ksym_del bpf: Rename bpf_tree to bpf_progs_tree bpf: Add trampolines to kallsyms bpf: Add dispatchers to kallsyms bpf: Sort bpf kallsyms symbols arch/x86/mm/init_32.c | 14 ++++++---- include/linux/bpf.h | 54 ++++++++++++++++++++++++++------------ include/linux/filter.h | 13 +++------- kernel/bpf/core.c | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------------- kernel/bpf/dispatcher.c | 6 +++++ kernel/bpf/trampoline.c | 23 ++++++++++++++++ kernel/events/core.c | 4 +-- net/core/filter.c | 5 ++-- 8 files changed, 219 insertions(+), 82 deletions(-)