From patchwork Thu Nov 1 07:00:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 991842 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="NijqKoll"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 42lx214y1Jz9sVq for ; Thu, 1 Nov 2018 18:01:13 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728098AbeKAQCy (ORCPT ); Thu, 1 Nov 2018 12:02:54 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:59022 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727814AbeKAQCv (ORCPT ); Thu, 1 Nov 2018 12:02:51 -0400 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wA16sV8W003296 for ; Thu, 1 Nov 2018 00:01:09 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=G4bsQVRzxEiua+HDX9YNqMmFmDCssT217R8LnZ9n5mU=; b=NijqKoll19z/IZiO4ENhQ3z3hwZ8CqgpGY7pwlE5YhROA0nyN7e/IyAfjQdhF6muLiks 3s0iDys73oi0/yQvzUuOS9BaXj60gV/HihG+VF3WHxqPtRogufQOIJClguxE+9bGW+dJ T206EP8S9HJid72nOmYzjL66phcxomMTzxg= Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2nfvkd80hn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 01 Nov 2018 00:01:09 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::126) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1531.3; Thu, 1 Nov 2018 00:01:08 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 73A4D62E1E64; Thu, 1 Nov 2018 00:01:06 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: CC: , Song Liu , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf 0/3] show more accurrate bpf program address Date: Thu, 1 Nov 2018 00:00:55 -0700 Message-ID: <20181101070058.2760251-1-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-11-01_04:, , signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This set improves bpf program address showed in /proc/kallsyms and in bpf_prog_info. First, real program address is showed instead of page address. Second, when there is no subprogram, bpf_prog_info->jited_ksyms returns the main prog address. Song Liu (3): bpf: show real jited prog address in /proc/kallsyms bpf: show real jited address in bpf_prog_info->jited_ksyms bpf: show main program address in bpf_prog_info->jited_ksyms kernel/bpf/core.c | 4 +--- kernel/bpf/syscall.c | 17 ++++++++++++----- 2 files changed, 13 insertions(+), 8 deletions(-) Acked-by: Alexei Starovoitov --- 2.17.1