From patchwork Thu Jan 4 01:38:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrii Nakryiko X-Patchwork-Id: 13510719 X-Patchwork-Delegate: bpf@iogearbox.net Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 508F61859 for ; Thu, 4 Jan 2024 01:39:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 403GiIbf027350 for ; Wed, 3 Jan 2024 17:39:05 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3vcxn2qk5p-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 03 Jan 2024 17:39:05 -0800 Received: from twshared15991.38.frc1.facebook.com (2620:10d:c0a8:1b::2d) by mail.thefacebook.com (2620:10d:c0a8:82::b) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Wed, 3 Jan 2024 17:39:02 -0800 Received: by devbig019.vll3.facebook.com (Postfix, from userid 137359) id 60BDB3DFAFE4D; Wed, 3 Jan 2024 17:38:55 -0800 (PST) From: Andrii Nakryiko To: , , , CC: , , Jiri Olsa Subject: [PATCH v3 bpf-next 2/9] libbpf: use explicit map reuse flag to skip map creation steps Date: Wed, 3 Jan 2024 17:38:40 -0800 Message-ID: <20240104013847.3875810-3-andrii@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240104013847.3875810-1-andrii@kernel.org> References: <20240104013847.3875810-1-andrii@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-ORIG-GUID: dsDbokb7C2StpTLOjsQCjD50QwpyVoio X-Proofpoint-GUID: dsDbokb7C2StpTLOjsQCjD50QwpyVoio X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-03_10,2024-01-03_01,2023-05-22_02 X-Patchwork-Delegate: bpf@iogearbox.net Instead of inferring whether map already point to previously created/pinned BPF map (which user can specify with bpf_map__reuse_fd()) API), use explicit map->reused flag that is set in such case. Acked-by: Jiri Olsa Signed-off-by: Andrii Nakryiko --- tools/lib/bpf/libbpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index f1521a400f02..3b678b617213 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -5465,7 +5465,7 @@ bpf_object__create_maps(struct bpf_object *obj) } } - if (map->fd >= 0) { + if (map->reused) { pr_debug("map '%s': skipping creation (preset fd=%d)\n", map->name, map->fd); } else {