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david@kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, dave@stgolabs.net, jonathan.cameron@huawei.com, dave.jiang@intel.com, alison.schofield@intel.com, vishal.l.verma@intel.com, ira.weiny@intel.com, dan.j.williams@intel.com, harry.yoo@oracle.com, lsf-pc@lists.linux-foundation.org, kernel_team@skhynix.com, honggyu.kim@sk.com, yunjeong.mun@sk.com, Rakie Kim Subject: Re: [LSF/MM/BPF TOPIC] [RFC PATCH 0/4] mm/mempolicy: introduce socket-aware weighted interleave Date: Tue, 17 Mar 2026 18:50:03 +0900 Message-ID: <20260317095226.269-1-rakie.kim@sk.com> X-Mailer: git-send-email 2.52.0.windows.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsXC9ZZnkW62ys5Mgz1PuCzmrF/DZnH38QU2 i103QiymT73AaHHiZiObxeqbaxgtnm/9xWjx8+5xdov7y56xWOx/+pzFYtXCa2wWx7fOY7fY 3vCA3eL8rFMsFpd3zWGzuLfmP6vFyVkrWSz2vd7LbPGtT9rifp+DxZH125ksJl9awGYxu7GP 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 5Sotmkgv tNw0uVcEro2hnJGyUCLS4WeMnrAqCFwv+Wkd2lKw4wk0gmmIfpcrLu2puA7uEMZbKrvo1fSmadebhOfTWBZwXDZPsJ3TcYZGwO6Y5NlcSDLVUAoG9wvuIjoQwbBNnCzCg0yeS Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 16 Mar 2026 10:01:48 -0400 Gregory Price wrote: > On Mon, Mar 16, 2026 at 02:12:48PM +0900, Rakie Kim wrote: > > This patch series is an RFC to propose and discuss the overall design > > and concept of a socket-aware weighted interleave mechanism. As there > > are areas requiring further refinement, the primary goal at this stage > > is to gather feedback on the architectural approach rather than focusing > > on fine-grained implementation details. > > > > I gave this a brief browse this morning, and I rather like this > approach, more-so than the original proposals for socket-awareness > that encoded the weights in a 2-dimensional array. Hello Gregory, Thanks for your review and feedback. I also think this approach is much better than the previous 2-dimensional array idea. Since this is still an early draft, I hope this code will be developed into a better design through community discussions. > > I think this would be a great discussion at LSF, and I wonder if > something like memory-package could be used for more purposes than just > weighted interleave. > > ~Gregory I and Honggyu Kim are actually preparing to propose this exact topic for the upcoming LSF/MM/BPF summit. However, I accidentally missed adding lsf-pc@lists.linux-foundation.org to the CC list. I will re-post or forward this to the LSF PC list soon. You are exactly right about the memory-package. When I first designed it, I wanted to use it for memory tiering and other areas, not just for weighted interleave. For now, weighted interleave is the only implemented use case, but I hope to keep improving it so it can be used in other subsystems as well. Thanks again for your time and review. Rakie Kim