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 3EEB24C33CA; Mon, 12 Oct 2026 17:51:53 +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=1791827515; cv=none; b=uM/IW4Vsk6RmJLf4q2v/V/HP8HXt8rCKGazowKK3E7a+g4ExF4vSkRCMVYmFkhTXuObzuU3wmQlPoPrOUwrBIGic1JyevnCh56YICzyl4AaQdtFUtTAgacqQiZeP7gxCQqVsaJL6F79+9yT88b1L0hyrhNY9ZjwTucVUe6JF6+k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791827515; c=relaxed/simple; bh=qDINUBxZZPw1zhFnyXj5oTfCOVb0IJMJx4thMwKV8YA=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References; b=WLdltILvYXvRbZ+MQf1HwlDwlMAty59p9b6LgoB8/T7KoZlg2yPlUzrjr71Kv+ybSb23i1k2wIKaBCgRVAv7IXY6GzDRv9jIizuRalVWjrgGv057bbR9fb1W6dmV292w/Dc3FsUljWoHLSfpA8Iw79NNIAkjaoQd5JqVam2W2R4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oYo3Ib9T; 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="oYo3Ib9T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67F5D1F0089B; Mon, 12 Oct 2026 17:51:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791827513; bh=kNahywYLBv8aIcm/NKKEaAKhrF/aTvhTm1jlesIR1Tw=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=oYo3Ib9T2TZSshkFrVUqEOLiXFfRi1YL/5Ep6sBc6dUG5N/yAlaONNYFmgvEBgrHc b9gj1QMF/XT2BhOc8rgrHhkT2xYAb2qbmTW1urn3miOGHSekiPjh4ErT4cMJ0M/21i 9a/MJ3coYndW9WG5251ppIixuze1q+EOYOT5rSnr4G9VGICdyxxTbg+z3lo8BYW+Vs EEGdBOaSVLLMudVkvldsDK3nm3hwVFj7QKz5ZiXF152X1DHBP1sEOZXa2Gl9mEU8N2 i6fzl2GUCx66cs+DXUYZo9F4c9PdUJTvzejtHoBFarjZMvq7xew3/QlWrXnYjxjlVX Thln3g3+yC+Xg== Date: Mon, 12 Oct 2026 07:51:52 -1000 Message-ID: From: Tejun Heo To: Yafang Shao Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, akpm@linux-foundation.org, david@kernel.org, gourry@gourry.net, hannes@cmpxchg.org, mkoutny@suse.com, shakeel.butt@linux.dev, roman.gushchin@linux.dev, yu.c.chen@intel.com, zhao1.liu@intel.com, bpf@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2 0/3] BPF-based per-cgroup NUMA balancing mode selection In-Reply-To: <20261012120438.52849-1-laoar.shao@gmail.com> References: <20261012120438.52849-1-laoar.shao@gmail.com> Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hello, On Mon, Oct 12, 2026 at 08:04:35PM +0800, Yafang Shao wrote: > This series adds a bpf_numab_ops struct_ops which attaches to a > cgroup. The kernel consults the policies of the matching cgroup and of > every ancestor and combines what they return. The op doesn't compute anything. It returns a fixed mode per cgroup and that's all the series uses it for. BPF is unnecessary here. This is a prctl() feature, not a struct_ops one. Thanks. -- tejun