From patchwork Wed Dec 6 22:45:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 845382 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@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; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="FLrFKOf6"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3ysYcF5K0fz9s71 for ; Thu, 7 Dec 2017 09:45:49 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753144AbdLFWpr (ORCPT ); Wed, 6 Dec 2017 17:45:47 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:47736 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752177AbdLFWp0 (ORCPT ); Wed, 6 Dec 2017 17:45:26 -0500 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vB6MjMxl004483 for ; Wed, 6 Dec 2017 14:45:25 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=rLl8zwmDSnOUKc7TEyoGFSfaXkN9ZPGfuqKqHuv0/No=; b=FLrFKOf6knhn/9AFgENRdT2qDMNSb1qp6RzcOZsC6qI3suanj3yPvkZ996FqeyfiWaRM wn7zFoVvvIg9NnbiuR9eeensyj0VBcHfIceYVHUIborC5cCa8XKIFYmtk9wKtY9MIeop TTC8xJUX0KSx1njdjHnWchw7oUekzFiYem8= Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2eppx2ggj1-8 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Wed, 06 Dec 2017 14:45:25 -0800 Received: from mx-out.facebook.com (192.168.52.123) by PRN-CHUB05.TheFacebook.com (192.168.16.15) with Microsoft SMTP Server id 14.3.361.1; Wed, 6 Dec 2017 14:45:22 -0800 Received: by devbig102.frc2.facebook.com (Postfix, from userid 4523) id 665A7428280F; Wed, 6 Dec 2017 14:45:21 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig102.frc2.facebook.com To: , , , , , , CC: , Song Liu Smtp-Origin-Cluster: frc2c02 Subject: [PATCH v5 1/6] perf: prepare perf_event.h for new types perf_kprobe and perf_uprobe Date: Wed, 6 Dec 2017 14:45:13 -0800 Message-ID: <20171206224518.3598254-4-songliubraving@fb.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20171206224518.3598254-1-songliubraving@fb.com> References: <20171206224518.3598254-1-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-06_08:, , 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 Two new perf types, perf_kprobe and perf_uprobe, will be added to allow creating [k,u]probe with perf_event_open. These [k,u]probe are associated with the file decriptor created by perf_event_open, thus are easy to clean when the file descriptor is destroyed. kprobe_func and uprobe_path are added to union config1 for pointers to function name for kprobe or binary path for uprobe. kprobe_addr and probe_offset are added to union config2 for kernel address (when kprobe_func is NULL), or [k,u]probe offset. Signed-off-by: Song Liu Reviewed-by: Yonghong Song Reviewed-by: Josef Bacik Acked-by: Alexei Starovoitov --- include/uapi/linux/perf_event.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 362493a..b2d80a7 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -380,10 +380,14 @@ struct perf_event_attr { __u32 bp_type; union { __u64 bp_addr; + __u64 kprobe_func; /* for perf_kprobe */ + __u64 uprobe_path; /* for perf_uprobe */ __u64 config1; /* extension of config */ }; union { __u64 bp_len; + __u64 kprobe_addr; /* when kprobe_func == NULL */ + __u64 probe_offset; /* for perf_[k,u]probe */ __u64 config2; /* extension of config1 */ }; __u64 branch_sample_type; /* enum perf_branch_sample_type */