From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51615C18E5A for ; Tue, 10 Mar 2020 18:36:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24B1421D56 for ; Tue, 10 Mar 2020 18:36:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="p4jdVv2b" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727225AbgCJSgf (ORCPT ); Tue, 10 Mar 2020 14:36:35 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:51476 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727020AbgCJSge (ORCPT ); Tue, 10 Mar 2020 14:36:34 -0400 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 02AIWrET024706 for ; Tue, 10 Mar 2020 11:36:33 -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=dvvzqHIo0UsE30wHzutqkvcRqJq4ctQTBNl3MHmLbPo=; b=p4jdVv2bpP/nY7bd0vO2PoZffahMo2ENnSALEIDwpIS+A/Bw+zeGhZV4Lb+xgrUAZOEN MKY6lQO3Exei//nvu/8ah3Sgg1ZD+r0NOrxgFLD75/UQsKT8U47JnKWUMCfjsyOClOWr w/aNAMcXwJP/2uZ00R2mkew0iKeiZ7eIMoM= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2yp25fm4n0-7 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 10 Mar 2020 11:36:33 -0700 Received: from intmgw003.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1847.3; Tue, 10 Mar 2020 11:36:31 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id A7B6E62E28D2; Tue, 10 Mar 2020 11:36:27 -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-next 1/2] bpftool: only build bpftool-prog-profile with clang >= v11 Date: Tue, 10 Mar 2020 11:36:22 -0700 Message-ID: <20200310183624.441788-2-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200310183624.441788-1-songliubraving@fb.com> References: <20200310183624.441788-1-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-03-10_12:2020-03-10,2020-03-10 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 clxscore=1015 spamscore=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003100110 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org bpftool-prog-profile requires clang of version 11.0.0 or newer. If bpftool is built with older clang, show a hint of to the user. Signed-off-by: Song Liu --- tools/bpf/bpftool/Makefile | 13 +++++++++++-- tools/bpf/bpftool/prog.c | 2 ++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile index 20a90d8450f8..05a37f0f76a9 100644 --- a/tools/bpf/bpftool/Makefile +++ b/tools/bpf/bpftool/Makefile @@ -60,6 +60,15 @@ LIBS = $(LIBBPF) -lelf -lz INSTALL ?= install RM ?= rm -f CLANG ?= clang +CLANG_VERS = $(shell $(CLANG) --version | head -n 1 | awk '{print $$3}') +CLANG_MAJ = $(shell echo $(CLANG_VERS) | cut -d '.' -f 1) +WITHOUT_SKELETONS = -DBPFTOOL_WITHOUT_SKELETONS + +ifeq ($(shell test $(CLANG_MAJ) -ge 11; echo $$?),0) + PROG_FLAGS = +else + PROG_FLAGS = $(WITHOUT_SKELETONS) +endif FEATURE_USER = .bpftool FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib @@ -114,7 +123,7 @@ OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o _OBJS = $(filter-out $(OUTPUT)prog.o,$(OBJS)) $(OUTPUT)_prog.o $(OUTPUT)_prog.o: prog.c - $(QUIET_CC)$(COMPILE.c) -MMD -DBPFTOOL_WITHOUT_SKELETONS -o $@ $< + $(QUIET_CC)$(COMPILE.c) -MMD $(WITHOUT_SKELETONS) -o $@ $< $(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF) $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(_OBJS) $(LIBS) @@ -126,7 +135,7 @@ profiler.skel.h: $(OUTPUT)_bpftool skeleton/profiler.bpf.o $(QUIET_GEN)$(OUTPUT)./_bpftool gen skeleton skeleton/profiler.bpf.o > $@ $(OUTPUT)prog.o: prog.c profiler.skel.h - $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< + $(QUIET_CC)$(COMPILE.c) -MMD $(PROG_FLAGS) -o $@ $< $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index 576ddd82bc96..5db378d5d970 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -1545,6 +1545,8 @@ static int do_loadall(int argc, char **argv) static int do_profile(int argc, char **argv) { + fprintf(stdout, "bpftool prog profile command is not supported.\n" + "Please recompile bpftool with clang >= 11.0.0\n"); return 0; } -- 2.17.1