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Fri, 22 Mar 2024 10:25:38 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 42M9GraF014999; Fri, 22 Mar 2024 10:25:37 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3x0wvk2hst-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 22 Mar 2024 10:25:37 +0000 Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 42MAK0kb030399; Fri, 22 Mar 2024 10:25:36 GMT Received: from bpf.uk.oracle.com (dhcp-10-175-192-105.vpn.oracle.com [10.175.192.105]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3x0wvk2h75-8; Fri, 22 Mar 2024 10:25:36 +0000 From: Alan Maguire To: andrii@kernel.org, jolsa@kernel.org, acme@redhat.com, quentin@isovalent.com Cc: eddyz87@gmail.com, mykolal@fb.com, ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, houtao1@huawei.com, bpf@vger.kernel.org, masahiroy@kernel.org, mcgrof@kernel.org, nathan@kernel.org, Alan Maguire Subject: [RFC bpf-next 06/13] kbuild,bpf: switch to using --btf_features for pahole v1.26 and later Date: Fri, 22 Mar 2024 10:24:48 +0000 Message-Id: <20240322102455.98558-8-alan.maguire@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240322102455.98558-1-alan.maguire@oracle.com> References: <20240322102455.98558-1-alan.maguire@oracle.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-22_06,2024-03-21_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 spamscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2403210000 definitions=main-2403220074 X-Proofpoint-GUID: 4ntLRm3uTJCfLY_ARYXtiq_IndzgfjTm X-Proofpoint-ORIG-GUID: 4ntLRm3uTJCfLY_ARYXtiq_IndzgfjTm The btf_features list can be used for pahole v1.26 and later - it is useful because if a feature is not yet implemented it will not exit with a failure message. This will allow us to add feature requests to the pahole options without having to check pahole versions in future; if the version of pahole supports the feature it will be added. Signed-off-by: Alan Maguire --- scripts/Makefile.btf | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf index 82377e470aed..9694ca3c5252 100644 --- a/scripts/Makefile.btf +++ b/scripts/Makefile.btf @@ -12,8 +12,11 @@ pahole-flags-$(call test-ge, $(pahole-ver), 121) += --btf_gen_floats pahole-flags-$(call test-ge, $(pahole-ver), 122) += -j -pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE) += --lang_exclude=rust - pahole-flags-$(call test-ge, $(pahole-ver), 125) += --skip_encoding_btf_inconsistent_proto --btf_gen_optimized +# Switch to using --btf_features for v1.26 and later. +pahole-flags-$(call test-ge, $(pahole-ver), 126) = -j --btf_features=encode_force,var,float,emum64,decl_tag,type_tag,optimized_func,consistent_func + +pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE) += --lang_exclude=rust + export PAHOLE_FLAGS := $(pahole-flags-y) -- 2.39.3