From patchwork Fri Feb 28 23:40:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 1246916 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@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=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.a=rsa-sha256 header.s=facebook header.b=Al7MtMtk; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48TmJQ1vhjz9sPk for ; Sat, 29 Feb 2020 10:41:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726740AbgB1XlI (ORCPT ); Fri, 28 Feb 2020 18:41:08 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:58358 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726277AbgB1XlI (ORCPT ); Fri, 28 Feb 2020 18:41:08 -0500 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01SNehbH004304 for ; Fri, 28 Feb 2020 15:41:06 -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=j/6SXOvCctfR5eluAvXtIqLImVqnk3gXRJKCdN6HMh8=; b=Al7MtMtk4rc4VIIw2XYLxA/qaCPLo+IfepRZ7ep/lP9JzHkcPoaj8SSdzfivuz4lFDbR hXOzcY7TwKnWajq61qKnaYPQWwaBW+kLCEHVJ21GfE7gnAAqvBDYPQmXzBI/fPz6+i/q OyTymlf/qlIRAVEXhyCmW4azK4PJFlz7BUo= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2yepvgx4xt-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 28 Feb 2020 15:41:06 -0800 Received: from intmgw001.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Fri, 28 Feb 2020 15:41:05 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 3600B62E0BA7; Fri, 28 Feb 2020 15:41:05 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: , CC: , , , , , Song Liu Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v2 bpf-next 2/2] bpftool: Documentation for bpftool prog profile Date: Fri, 28 Feb 2020 15:40:58 -0800 Message-ID: <20200228234058.634044-3-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200228234058.634044-1-songliubraving@fb.com> References: <20200228234058.634044-1-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-28_09:2020-02-28,2020-02-28 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 impostorscore=0 spamscore=0 bulkscore=0 phishscore=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002280172 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add documentation for the new bpftool prog profile command. Signed-off-by: Song Liu --- .../bpf/bpftool/Documentation/bpftool-prog.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst index 46862e85fed2..1e2549dcd926 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst @@ -30,6 +30,7 @@ PROG COMMANDS | **bpftool** **prog detach** *PROG* *ATTACH_TYPE* [*MAP*] | **bpftool** **prog tracelog** | **bpftool** **prog run** *PROG* **data_in** *FILE* [**data_out** *FILE* [**data_size_out** *L*]] [**ctx_in** *FILE* [**ctx_out** *FILE* [**ctx_size_out** *M*]]] [**repeat** *N*] +| **bpftool** **prog profile** [*DURATION*] *PROG* *METRICs* | **bpftool** **prog help** | | *MAP* := { **id** *MAP_ID* | **pinned** *FILE* } @@ -48,6 +49,9 @@ PROG COMMANDS | *ATTACH_TYPE* := { | **msg_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector** | } +| *METRIC* := { +| **cycles** | **instructions** | **l1d_loads** | **llc_misses** +| } DESCRIPTION @@ -189,6 +193,10 @@ DESCRIPTION not all of them can take the **ctx_in**/**ctx_out** arguments. bpftool does not perform checks on program types. + **bpftool prog profile** *DURATION* *PROG* *METRICs* + Profile *METRICs* for bpf program *PROG* for *DURATION* + seconds. + **bpftool prog help** Print short help message. @@ -311,6 +319,15 @@ EXAMPLES **# rm /sys/fs/bpf/xdp1** +| +| **# bpftool prog profile 10 id 337 cycles instructions llc_misses** + +:: + 51397 run_cnt + 40176203 cycles (83.05%) + 42518139 instructions # 1.06 insn per cycle (83.39%) + 123 llc_misses # 2.89 LLC misses per million isns (83.15%) + SEE ALSO ======== **bpf**\ (2),