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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,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 B03B7C4360F for ; Thu, 4 Apr 2019 09:17:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7EF1A20693 for ; Thu, 4 Apr 2019 09:17:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554369440; bh=cjtxhAYYAcIj1K6z5Piztr+1bMldhmBvEbfnugOxn9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=NKNB/UG8ZoXB4YxqvgA5LSTt04NO2b0p/34K6icwoDZrzx2zm0PSIcHmp3wIMy6/C x5PmfXVIwzVbe2B470QF4EfbkZNQJq2dRlRAEccCxU/oLMkwM5UJlT5x/U10l20e7M F88nV/JSEyU3NiAGbJmZsUb08/K1HoYu5hOEZQY0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388185AbfDDJRT (ORCPT ); Thu, 4 Apr 2019 05:17:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:58818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388168AbfDDJRO (ORCPT ); Thu, 4 Apr 2019 05:17:14 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ED4BB2054F; Thu, 4 Apr 2019 09:17:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554369433; bh=cjtxhAYYAcIj1K6z5Piztr+1bMldhmBvEbfnugOxn9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aVt1JcoGUGbx50ZHwwHWc48FgvbR+OGEpp9rxIkT4ej3NmqshBP9UGYTFxEdRLiXk t9mW4xmNEDKa6s2sYTsAGivaWdXYtt34Bj4zOIumc/g4PZXH1fl5OzKmq/Dg7xv4kg CX9djuKhtF8pIuYWaloNpimudUc4XidVnkc3IoSc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stanislav Fomichev , Song Liu , Daniel Borkmann , Sasha Levin Subject: [PATCH 5.0 206/246] selftests/bpf: suppress readelf stderr when probing for BTF support Date: Thu, 4 Apr 2019 10:48:26 +0200 Message-Id: <20190404084626.403076071@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190404084619.236418459@linuxfoundation.org> References: <20190404084619.236418459@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 5.0-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 2f0921262ba943fe9d9f59037a033927d8c4789b ] Before: $ make -s -C tools/testing/selftests/bpf readelf: Error: Missing knowledge of 32-bit reloc types used in DWARF sections of machine number 247 readelf: Warning: unable to apply unsupported reloc type 10 to section .debug_info readelf: Warning: unable to apply unsupported reloc type 1 to section .debug_info readelf: Warning: unable to apply unsupported reloc type 10 to section .debug_info After: $ make -s -C tools/testing/selftests/bpf v2: * use llvm-readelf instead of redirecting binutils' readelf stderr to /dev/null Signed-off-by: Stanislav Fomichev Acked-by: Song Liu Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin --- tools/testing/selftests/bpf/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 41ab7a3668b3..936f726f7cd9 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -96,6 +96,7 @@ $(BPFOBJ): force CLANG ?= clang LLC ?= llc LLVM_OBJCOPY ?= llvm-objcopy +LLVM_READELF ?= llvm-readelf BTF_PAHOLE ?= pahole PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) @@ -132,7 +133,7 @@ BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ - readelf -S ./llvm_btf_verify.o | grep BTF; \ + $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ /bin/rm -f ./llvm_btf_verify.o) ifneq ($(BTF_LLVM_PROBE),) -- 2.19.1