From patchwork Thu Mar 14 18:27:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 1056649 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 (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="gH6DO0BM"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44KxyX5Fg9z9s9N for ; Fri, 15 Mar 2019 05:27:32 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727815AbfCNS1a (ORCPT ); Thu, 14 Mar 2019 14:27:30 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:52566 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727279AbfCNS13 (ORCPT ); Thu, 14 Mar 2019 14:27:29 -0400 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2EIHT5D014266 for ; Thu, 14 Mar 2019 11:27:27 -0700 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=kNu5FEdUEzdGD3HodR7rQk2Fg8EqpwAkLj0KJpr+oqg=; b=gH6DO0BMeyRtYbjl3G1SyKBGSJ1KxKT02Mi5nf09oEtkGaI3OMj4tYwX/fcDe47RVmeN /PKyvG9qN3GwAM/cQdvhbc6AK1HDgc5owhgohnDAe6EFAjd4+R87YVWZYwkiezztVTAM XSECl3kt97QSTneii/Fb9gGInWisXtzrF2E= Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2r7uq784md-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 14 Mar 2019 11:27:27 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::125) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Thu, 14 Mar 2019 11:27:24 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 8067F62E1C58; Thu, 14 Mar 2019 11:27:23 -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 perf, bpf 2/2] perf, bpf: show more BPF program info in print_bpf_prog_info() Date: Thu, 14 Mar 2019 11:27:21 -0700 Message-ID: <20190314182721.1298444-1-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190314182538.1294526-4-songliubraving@fb.com> References: <20190314182538.1294526-4-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-14_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 This patch enables showing bpf program name, address, and size in the header. Before the patch: perf report --header-only ... # bpf_prog_info of id 9 # bpf_prog_info of id 10 # bpf_prog_info of id 13 After the patch: # bpf_prog_info 9: bpf_prog_7be49e3934a125ba addr 0xffffffffa0024947 size 229 # bpf_prog_info 10: bpf_prog_2a142ef67aaad174 addr 0xffffffffa007c94d size 229 # bpf_prog_info 13: bpf_prog_47368425825d7384_task__task_newt addr 0xffffffffa0251137 size 369 Signed-off-by: Song Liu --- tools/perf/util/bpf-event.c | 40 +++++++++++++++++++++++++++++++++++++ tools/perf/util/bpf-event.h | 10 +++++++++- tools/perf/util/header.c | 5 +++-- 3 files changed, 52 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c index 6e035e08aa2d..06670cfc2f4a 100644 --- a/tools/perf/util/bpf-event.c +++ b/tools/perf/util/bpf-event.c @@ -433,3 +433,43 @@ int bpf_event__add_sb_event(struct perf_evlist **evlist, return perf_evlist__add_sb_event(evlist, &attr, bpf_event__sb_cb, env); } + +void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info, + struct perf_env *env, + FILE *fp) +{ + __u32 *prog_lens = (__u32 *)(uintptr_t)(info->jited_func_lens); + __u64 *prog_addrs = (__u64 *)(uintptr_t)(info->jited_ksyms); + char name[KSYM_NAME_LEN]; + struct btf *btf = NULL; + u32 sub_prog_cnt, i; + + sub_prog_cnt = info->nr_jited_ksyms; + if (sub_prog_cnt != info->nr_prog_tags || + sub_prog_cnt != info->nr_jited_func_lens) + return; + + if (info->btf_id) { + struct btf_node *node; + + node = perf_env__find_btf(env, info->btf_id); + if (node) + btf = btf__new((__u8 *)(node->data), + node->data_size); + } + + if (sub_prog_cnt == 1) { + synthesize_bpf_prog_name(name, KSYM_NAME_LEN, info, btf, 0); + fprintf(fp, "# bpf_prog_info %u: %s addr 0x%llx size %u\n", + info->id, name, prog_addrs[0], prog_lens[0]); + return; + } + + fprintf(fp, "# bpf_prog_info %u:\n", info->id); + for (i = 0; i < sub_prog_cnt; i++) { + synthesize_bpf_prog_name(name, KSYM_NAME_LEN, info, btf, i); + + fprintf(fp, "# \tsub_prog %u: %s addr 0x%llx size %u\n", + i, name, prog_addrs[i], prog_lens[i]); + } +} diff --git a/tools/perf/util/bpf-event.h b/tools/perf/util/bpf-event.h index 249909c826e7..4270dfd9cde9 100644 --- a/tools/perf/util/bpf-event.h +++ b/tools/perf/util/bpf-event.h @@ -38,7 +38,9 @@ int perf_event__synthesize_bpf_events(struct perf_session *session, struct record_opts *opts); int bpf_event__add_sb_event(struct perf_evlist **evlist, struct perf_env *env); - +void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info, + struct perf_env *env, + FILE *fp); #else static inline int machine__process_bpf_event(struct machine *machine __maybe_unused, union perf_event *event __maybe_unused, @@ -61,5 +63,11 @@ static int bpf_event__add_sb_event(struct perf_evlist **evlist __maybe_unused, return 0; } +void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info, + struct perf_env *env, + FILE *fp) +{ + +} #endif // HAVE_LIBBPF_SUPPORT #endif diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 7decd2d1dbda..588a80bdd500 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1434,8 +1434,9 @@ static void print_bpf_prog_info(struct feat_fd *ff, FILE *fp) node = rb_entry(next, struct bpf_prog_info_node, rb_node); next = rb_next(&node->rb_node); - fprintf(fp, "# bpf_prog_info of id %u\n", - node->info_linear->info.id); + + bpf_event__print_bpf_prog_info(&node->info_linear->info, + env, fp); } up_read(&env->bpf_progs.lock);