From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A3E6347DF85; Tue, 8 Sep 2026 21:03:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788901416; cv=none; b=D/rrNNoAYJD2HVwpF5PO11zZ18y25ws+GPqLqjQ2mYm7Z/DXaYlnnzVPFMN0WWwledeyd06yfIFGB6sIMDKkzjU1rf22sKg9Dj1SFZQavCdF2ApWJhWrIdadQwV8HuJUJ0D/J3kn17LoFs1OHXbechmyvu+iU9ROf38LZ9c6ZWo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788901416; c=relaxed/simple; bh=rl/WelV0cCYJl1RLGKd2Pb4UEI2Tvq5bfyfRacbPMbE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=rpbpBwIbAtTMgEyhqtfiBj8aLyN9w/vEI/cad+Yf1KYMjqqmmu83rLeHrDgAoQGnahFzFEKkWIG0A6qQv/Fn2vdcsmlqkzQBSDGwmddEuw1B3AxaOjHiLE9sss7r7M16mCuXkQGg3dbN+rLC8QYvrv8Lsu9fumHqsgu+0ePIil0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=P65WIT3R; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="P65WIT3R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 283F21F00A3D; Tue, 8 Sep 2026 21:03:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788901415; bh=JZJjBYS6s6gnlUuYFtaOmSi33aTkdr2WdvogNR0qcbU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=P65WIT3RqLmbT5EvXl4LZ5I1h81g3JIlJvHsFZy0ejcFweqPoQPzbMiyDjjXuTbTd 8d4SNO2zkkyM/5XVqoRJND5jGkAburJ7Y063HyDY4kD1/VjcqDUByIrje7ZV0QROVe S8lvnkxXdd6g5OjiS6YoPRJBZ0dxl6p58R80evplS3wE5zAGLfQhB3P7XlEotQMoLE joqREhwbAB19xNVnIS5UiWDYGC3Yi3vbrMr9Df09KYLt2pZ/sAq4xpe/IytatiF5q0 oK9RStbTo/WESevMfwP2cT3wC/mQPESqF5fdRMpuVPFLWDWbGfSG/R3fnzJnxN8UJZ bY2h/P+Vmldcw== From: Tejun Heo To: Tao Cui Cc: tj@kernel.org, josef@toxicopanda.com, axboe@kernel.dk, cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, andrii@kernel.org, ast@kernel.org, daniel@iogearbox.net, linux-kselftest@vger.kernel.org, Tao Cui Subject: Re: [RFC PATCH 2/8] blk-iocost: define iocost_model_ops cost model interface Date: Tue, 08 Sep 2026 10:31:11 -1000 Message-ID: <178889947167.2.7544023096586414638@kernel.org> In-Reply-To: <20260908100143.47598-3-cui.tao@linux.dev> References: <20260908100143.47598-1-cui.tao@linux.dev> <20260908100143.47598-3-cui.tao@linux.dev> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hello, Tao. On Tue, 08 Sep 2026 18:01:37 +0800, Tao Cui wrote: > +config BLK_CGROUP_IOCOST_BPF > + bool "Enable BPF pluggable cost model support for the cost IO controller" > + depends on BLK_CGROUP_IOCOST && BPF_SYSCALL && BPF_JIT This also needs a dependency on DEBUG_INFO_BTF. Otherwise the option can be enabled without the BTF required to register iocost_model_ops. Thanks. -- tejun