From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-173.mta0.migadu.com (out-173.mta0.migadu.com [91.218.175.173]) (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 60ECB25B1CE; Wed, 24 Sep 2025 21:16:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758748564; cv=none; b=aSy2OsJrk7TjNQeuScdW96c+6Z4zTMKB7d3pBcyr4g98fgOQ6V9Ev4tWncU+wC0FZwQmB2jxSj+l9FtqBTCXPN5/7y59zAvIxyPtJpZbH6aC2fWU1i9DYiBK+rp9TuXCFTi+eDoqkVfIwkZ0eA/oLRENjmQ41mLVeyXWvmzmsSE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758748564; c=relaxed/simple; bh=4+tjgcv1kcysAsBQl25lYPrEQGhq9dj0OORP1sz8UBg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Cu5klOHVvCZYJocpfmVYf4U3aThJHLtARtSct+f2Lfb/IbetShENGYsufE9fw0Fa+NTR4WSIfRFOlSp00kJalOVLMbjxqCTozF5nWtTVUaQDME0UJzQB/6ZGLA/wkKEyjRrzpsXhvgm2r78C41pYuyLKjSJdjbzQIAnWFW87DJk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=HatGGRro; arc=none smtp.client-ip=91.218.175.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="HatGGRro" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1758748559; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=9PGwQHPnVpeQv56lh681eq2C/g3Am9ZKx7kA4WrGWTQ=; b=HatGGRroypv/k/ZBYvQ71/gLNpd2rGPmjlG6rEieX+rFD0CjG++jgGN/LnENxBIZ+b/lD1 9R1/cSDxVDFZPBHjevX7F3oNaMIbw7sY7qVO4GFat9cYc3PjF3ScUhouDA+ZAVWSzk4rom fM68gsnjDrAeTIFaijwxZBUAhXBAC6M= From: Ihor Solodrai To: dwarves@vger.kernel.org, alan.maguire@oracle.com, acme@kernel.org Cc: bpf@vger.kernel.org, andrii@kernel.org, ast@kernel.org, eddyz87@gmail.com, tj@kernel.org, kernel-team@meta.com Subject: [PATCH dwarves v1 0/2] btf_encoder: KF_IMPLICIT_PROG_AUX_ARG support Date: Wed, 24 Sep 2025 14:15:10 -0700 Message-ID: <20250924211512.1287298-1-ihor.solodrai@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT This series implements KF_IMPLICIT_PROG_AUX_ARG kfunc flag in pahole's BTF encoding. The kfunc flag indicates that the last argument of a BPF kfunc is a pointer to struct bpf_prog_aux implicitly set by the verifier. BTF function prototype of such a function must omit its last parameter (expected to be of `struct bpf_prog_aux *` type), despite it being present in the kernel declaration of the kfunc. See also a the patch series for BPF: "bpf: implicit bpf_prog_aux argument for kfuncs" Ihor Solodrai (2): btf_encoder: refactor btf_encoder__add_func_proto btf_encoder: implement KF_IMPLICIT_PROG_AUX_ARG kfunc flag handling btf_encoder.c | 172 ++++++++++++++++++++++++++++++++++---------------- 1 file changed, 116 insertions(+), 56 deletions(-) -- 2.51.0