From patchwork Sat Jan 28 00:06:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 13119541 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2E3DC38142 for ; Sat, 28 Jan 2023 00:08:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232416AbjA1AIC (ORCPT ); Fri, 27 Jan 2023 19:08:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232402AbjA1AHz (ORCPT ); Fri, 27 Jan 2023 19:07:55 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 967A8126FE for ; Fri, 27 Jan 2023 16:07:39 -0800 (PST) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30RNrZGq021400; Sat, 28 Jan 2023 00:07:27 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=yexce1rMvh4CPqKOBgLQJBDqOQEGbfG2pIcR2yFUdQU=; b=e3oXOCqbQZ0nylQxGOiQHCdJ2yamuBUAQdHRtLD6956Oao/0bsJHb7G/w9ZaZ9rObwX9 etCAUo7vLNc/ttJDrlFqBmcOWZteStbOp/LpRW/hodSAtg3N+JOXvUcaUsTASrTq9AeW rsjK/jLb0ei3Gjjf1FPd4THNLDbsZIymLdpR1u8eLIeW5AMu6kj/iLhGwvPp9dp2VRBJ aRKQGylS6zoAvcqCDS1IBk6Q6vo/ESCay8NSd+9IlzVBmENwgoc76xpShh45vXkEUw/S tTAKHiabMaj12MQs9lUbnDF+AESaZF/U5ADt1CdbNW6b4pR/UHaTEA3gnaIaPs9DoLWL 1g== Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ncrpf0a0n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 28 Jan 2023 00:07:27 +0000 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 30RGRJEk016231; Sat, 28 Jan 2023 00:07:25 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma04fra.de.ibm.com (PPS) with ESMTPS id 3n87p6dtcw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 28 Jan 2023 00:07:24 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 30S07JCI23069384 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 28 Jan 2023 00:07:19 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 32C5A2004E; Sat, 28 Jan 2023 00:07:19 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A9B7520040; Sat, 28 Jan 2023 00:07:18 +0000 (GMT) Received: from heavy.ibmuc.com (unknown [9.179.11.57]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Sat, 28 Jan 2023 00:07:18 +0000 (GMT) From: Ilya Leoshkevich To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Ilya Leoshkevich Subject: [PATCH bpf-next v2 21/31] libbpf: Simplify barrier_var() Date: Sat, 28 Jan 2023 01:06:40 +0100 Message-Id: <20230128000650.1516334-22-iii@linux.ibm.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230128000650.1516334-1-iii@linux.ibm.com> References: <20230128000650.1516334-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: vlZ7HWMelBgix1TPO9Gp7YlUkflHNYXS X-Proofpoint-GUID: vlZ7HWMelBgix1TPO9Gp7YlUkflHNYXS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-27_14,2023-01-27_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=900 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301270220 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Use a single "+r" constraint instead of the separate "=r" and "0". Signed-off-by: Ilya Leoshkevich --- tools/lib/bpf/bpf_helpers.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h index d37c4fe2849d..5ec1871acb2f 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -109,7 +109,7 @@ * This is a variable-specific variant of more global barrier(). */ #ifndef barrier_var -#define barrier_var(var) asm volatile("" : "=r"(var) : "0"(var)) +#define barrier_var(var) asm volatile("" : "+r"(var)) #endif /*