From patchwork Fri Jan 5 02:45:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Xu X-Patchwork-Id: 13511673 Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com [64.147.123.25]) (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 3AB5D5243; Fri, 5 Jan 2024 02:46:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=dxuuu.xyz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=dxuuu.xyz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=dxuuu.xyz header.i=@dxuuu.xyz header.b="OcasozcO"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="SwtNdc1w" Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.west.internal (Postfix) with ESMTP id 141D23200AA6; Thu, 4 Jan 2024 21:45:59 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Thu, 04 Jan 2024 21:46:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dxuuu.xyz; h=cc :content-transfer-encoding:content-type:date:date:from:from :in-reply-to:message-id:mime-version:reply-to:subject:subject:to :to; s=fm1; t=1704422759; x=1704509159; bh=shDcnJN57Ps6qaIAEkU8F J/na3mfjDv3/Jaj5tSn7IU=; b=OcasozcOKOlLR63MynS4l0InDlMwrPX2ZWPYJ sL9DX86SvCu8ClrOS4Ku1E/E8EBuEQzobGdM6lFoJ19nUzSTxgCKGITiBc0S39hY Pcx8qrwaDAdbdjb3cAHv+N28eqVEvlxez12Q/kXRn7DB5NKNh84BW7htzFfSHUzP t7C2OBWu+Z/fYToQmQ2HHxDFUG8sVPELu+y7Jy6YUqM9Rv3m1aZvoJ8b/eQ5Drd+ 6nh0dDlRQo78k717S8gTcLU5Pf5PoTfbmjVex4vtJCyQgJBOdz2/w8L/k+1/2sNd BqGTyLDGXN6qyiqRdThOXvXF8qsX5Gh5rCsPHobIjIAo0UgyQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:date:feedback-id:feedback-id:from:from:in-reply-to :message-id:mime-version:reply-to:subject:subject:to:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; t=1704422759; x=1704509159; bh=shDcnJN57Ps6qaIAEkU8FJ/na3mf jDv3/Jaj5tSn7IU=; b=SwtNdc1wjrGjwlkXJqmjjSKnRxeS8MdkZ363QWm36EgS mddXCYLacsTRIpi8y8SxIS8ae0Ml5kEBEC9RtfifypPk8QrFoKAPVc/f2lKvwzxR CHvnrpCZZmpkTsRWd75mn9PNlIAYzHMlITEX5pPs6j7V6ItrsrCJVjvsiRlugRKh M6sgk1g2xnckIxYNsFXOGm/0tahh05CI1YQNnusQhdwraz/k9WzJbgFlwrdMhDCV 8R7vPIXZrlNYLrikmQG7eWU/6R6izLHa4rHmhyUB2v3ZJcbkDtfzXdPcQuL8hsIz GDxEtPW9f0fy/KfK0Wgne8WAkp7BxV5N0jt4XhgV7Q== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrvdegkedgheduucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucgfrhhlucfvnfffucdlfeehmdenucfjughrpefhvf fufffkofgggfestdekredtredttdenucfhrhhomhepffgrnhhivghlucgiuhcuoegugihu segugihuuhhurdighiiiqeenucggtffrrghtthgvrhhnpeffffegjeduheelgfdtudekie ejgfegheehjefgieejveevteeiveeukefgheekjeenucffohhmrghinhepghhithhhuhgs rdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh epugiguhesugiguhhuuhdrgiihii X-ME-Proxy: Feedback-ID: i6a694271:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 4 Jan 2024 21:45:58 -0500 (EST) From: Daniel Xu To: bpf@vger.kernel.org, fsverity@lists.linux.dev, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, cgroups@vger.kernel.org, netdev@vger.kernel.org, alexei.starovoitov@gmail.com, olsajiri@gmail.com, quentin@isovalent.com, alan.maguire@oracle.com, memxor@gmail.com Subject: [PATCH bpf-next v2 0/3] Annotate kfuncs in .BTF_ids section Date: Thu, 4 Jan 2024 19:45:46 -0700 Message-ID: X-Mailer: git-send-email 2.42.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net === Description === This is a bpf-treewide change that annotates all kfuncs as such inside .BTF_ids. This annotation eventually allows us to automatically generate kfunc prototypes from bpftool. We store this metadata inside a yet-unused flags field inside struct btf_id_set8 (thanks Kumar!). pahole will be taught where to look. More details about the full chain of events are available in commit 3's description. The accompanying pahole changes (still needs some cleanup) can be viewed here on this "frozen" branch [0]. [0]: https://github.com/danobi/pahole/tree/kfunc_btf-mailed === Changelog === Changes from v1: * Move WARN_ON() up a call level * Also return error when kfunc set is not properly tagged * Use BTF_KFUNCS_START/END instead of flags * Rename BTF_SET8_KFUNC to BTF_SET8_KFUNCS Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF drivers/hid/bpf/hid_bpf_dispatch.c | 8 +++---- fs/verity/measure.c | 4 ++-- include/linux/btf_ids.h | 21 +++++++++++++++---- kernel/bpf/btf.c | 4 ++++ kernel/bpf/cpumask.c | 4 ++-- kernel/bpf/helpers.c | 8 +++---- kernel/bpf/map_iter.c | 4 ++-- kernel/cgroup/rstat.c | 4 ++-- kernel/trace/bpf_trace.c | 8 +++---- net/bpf/test_run.c | 8 +++---- net/core/filter.c | 16 +++++++------- net/core/xdp.c | 4 ++-- net/ipv4/bpf_tcp_ca.c | 4 ++-- net/ipv4/fou_bpf.c | 4 ++-- net/ipv4/tcp_bbr.c | 4 ++-- net/ipv4/tcp_cubic.c | 4 ++-- net/ipv4/tcp_dctcp.c | 4 ++-- net/netfilter/nf_conntrack_bpf.c | 4 ++-- net/netfilter/nf_nat_bpf.c | 4 ++-- net/xfrm/xfrm_interface_bpf.c | 4 ++-- net/xfrm/xfrm_state_bpf.c | 4 ++-- .../selftests/bpf/bpf_testmod/bpf_testmod.c | 8 +++---- 22 files changed, 77 insertions(+), 60 deletions(-)