From patchwork Thu Mar 14 18:25:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 1056648 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="LpPV/Z5e"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44Kxww5dQ3z9s3q for ; Fri, 15 Mar 2019 05:26:08 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727845AbfCNS0H (ORCPT ); Thu, 14 Mar 2019 14:26:07 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:40300 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727820AbfCNS0H (ORCPT ); Thu, 14 Mar 2019 14:26:07 -0400 Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.16.0.27/8.16.0.27) with SMTP id x2EIP0qh010005 for ; Thu, 14 Mar 2019 11:26:06 -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=830Mg/wijT0PLFqrHCfyVEw3VcP7HavW/LmK5w0hH70=; b=LpPV/Z5emzQzzg8qEWP0lsQV8vc0K4/cqk8OfmjVDG6++A+2YLfVYzVrDvU5H3qiJm/L 8KH2a8E75u8mSTjgtf/PVCKnyrlySexS/EHoovOkz3dvhyovGF6/XAs0MhGgYgDjPKmM mR6ovUXz7GTjtfW0EVIpztqxW4hk2/G7kro= Received: from maileast.thefacebook.com ([199.201.65.23]) by m0089730.ppops.net with ESMTP id 2r7v75r037-12 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 14 Mar 2019 11:26:06 -0700 Received: from mx-out.facebook.com (2620:10d:c0a1:3::13) by mail.thefacebook.com (2620:10d:c021:18::174) 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 11:25:48 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id CBCE362E1D1C; Thu, 14 Mar 2019 11:25:46 -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 BPF program name in print_bpf_prog_info() Date: Thu, 14 Mar 2019 11:25:37 -0700 Message-ID: <20190314182538.1294526-3-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190314182538.1294526-1-songliubraving@fb.com> References: <20190314182538.1294526-1-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 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 # bpf_prog_info 10: bpf_prog_2a142ef67aaad174 # bpf_prog_info 13: bpf_prog_47368425825d7384_task__task_newt Signed-off-by: Song Liu --- tools/perf/util/bpf-event.c | 36 ++++++++++++++++++++++++++++++++++++ tools/perf/util/bpf-event.h | 10 +++++++++- tools/perf/util/header.c | 5 +++-- 3 files changed, 48 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c index 6e035e08aa2d..dde35a36e2de 100644 --- a/tools/perf/util/bpf-event.c +++ b/tools/perf/util/bpf-event.c @@ -433,3 +433,39 @@ 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) +{ + 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\n", info->id, name); + 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\n", i, name); + } +} 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);