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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> X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 9F900C0002 X-Rspam-User: X-Stat-Signature: u4trkponyub89ce3793ta5tzz43gd9h3 X-HE-Tag: 1791827514-593477 X-HE-Meta: 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 J6vXOtlf 4Zv3qybll4YM46laxivAx5Q4WOtl30eQdXCWo4WhzRQPp8r3fLfyi9dxfw/VwwqOeN+ZHYqjQiIO69zZ6kMGWuJ/eJ83ai0GwIH6kUwTnn1hFtAhiqw2dyWpGDp0JRNmd86SSaijueM/WP8HCmeq3qbccnyfxsiXD6jjCauGihHBUbLqn6bhzeEYMQnchhsh/EiFoKTF5Jpn69s3epn/pB9VU/mo8BfPGQ31uLrnrJ7Ya1WbiOmw8BHjdH3TTlOd02qL+PV3JxzOEQH+JDR8sf6qQoFdeEq8RHPTDivhxcCrvT8lZZgUpPTe6JJTUpYGYsNHr Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.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