From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A72D33E6DEB; Fri, 24 Apr 2026 17:27:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777051652; cv=none; b=iEAMf4iWtJVQNjSV2g8KHmQB137lMxN/L1rz8QF8zuU4hgn5kUgegbcpVxdV4xheGgExVFsXj+Cm5sDmPPfjx7geq3NTfeKc+NIZb3tWsROhBWiouDeyJIbquBpRZRP9vMhvTO2OF1MfVej2HAR+WE6FJs1jyc/FhrlgM9p9cOQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777051652; c=relaxed/simple; bh=b96ZUNjRdqyGOSPNnQOCdG8J6qxbVkao39ZJAl0rfTc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZPyEyBUjOdRoyTRcup6KVNYPyDruzvCUWw8QChYarzEfF9Vb999k0+7lgCCBs9sJ34kIbme7yqdPNB+UKOwIb3jSYF+eX4qff0EYjB1dQX7hlqn95F4Y18luu5pMvCNV1QtzdXjfDoIIajnbFTDLTHIyfezUJe+vUZ3wCPfmpw8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IoCVQ3A9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IoCVQ3A9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65AFBC19425; Fri, 24 Apr 2026 17:27:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777051652; bh=b96ZUNjRdqyGOSPNnQOCdG8J6qxbVkao39ZJAl0rfTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IoCVQ3A9qRjTk5VshvhqFhBIS9e/+/6GjdMfOPq2/t2DqMrofFwOqw57wqEiUppSM E6E71MsWnQHDuqqlBXA2ugHh1cdKJZH9jddPl6ooNwbLDviMo6ooHtbLGwLhO9HJp0 xNGjjy7dV1ZqjFWK9vTmaTGLpRn6JfSzaPmQNnNPWrA+fzx7vIap7Hvx5mVG/F7L+e cTGTyRA5Q0AXyAcjGgnbJmMW8o/QT/+2jmYaYj4bFHNmTM9hrbYtuNHWO4ygy5D1KT h5lh/nBc0yMnVKPErifO4AIWENCXOL5q3pxkGQW34rFilI2KzVJRKjZGhzrz2M7nOc tlM15lcNI8CBQ== From: Tejun Heo To: David Vernet , Andrea Righi , Changwoo Min Cc: sched-ext@lists.linux.dev, emil@etsalapatis.com, linux-kernel@vger.kernel.org, Cheng-Yang Chou , Zhao Mengmeng , Tejun Heo Subject: [PATCH 09/17] tools/sched_ext: Add struct_size() helpers to common.bpf.h Date: Fri, 24 Apr 2026 07:27:13 -1000 Message-ID: <20260424172721.3458520-10-tj@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260424172721.3458520-1-tj@kernel.org> References: <20260424172721.3458520-1-tj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add flex_array_size(), struct_size() and struct_size_t() to scx/common.bpf.h so BPF schedulers can size flex-array-containing structs the same way kernel code does. These are abbreviated forms of the macros. Signed-off-by: Tejun Heo Reviewed-by: Cheng-Yang Chou --- tools/sched_ext/include/scx/common.bpf.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/sched_ext/include/scx/common.bpf.h b/tools/sched_ext/include/scx/common.bpf.h index 18f823d424cc..4bf959a8cd08 100644 --- a/tools/sched_ext/include/scx/common.bpf.h +++ b/tools/sched_ext/include/scx/common.bpf.h @@ -1043,6 +1043,16 @@ static inline u64 scx_clock_irq(u32 cpu) return irqt ? BPF_CORE_READ(irqt, total) : 0; } +/* Abbreviated forms of 's struct_size() family. */ +#define flex_array_size(p, member, count) \ + ((count) * sizeof(*(p)->member)) + +#define struct_size(p, member, count) \ + (sizeof(*(p)) + flex_array_size(p, member, count)) + +#define struct_size_t(type, member, count) \ + struct_size((type *)NULL, member, count) + #include "compat.bpf.h" #include "enums.bpf.h" -- 2.53.0