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McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Tejun Heo , Andrew Morton , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Anna-Maria Behnsen , Ingo Molnar , Shuah Khan , linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH 03/15] sched/isolation: Separate housekeeping types in enum hk_type Message-ID: <20260325135904.GB3738786@noisy.programming.kicks-ass.net> References: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> <20260325-dhei-v12-final-v1-3-919cca23cadf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260325-dhei-v12-final-v1-3-919cca23cadf@gmail.com> X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 16B688000E X-Stat-Signature: mbtkq7kraac816865fysitf9irpn7sca X-Rspam-User: X-HE-Tag: 1774447149-680216 X-HE-Meta: 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 GN33py+T WyLAaB67kUfnmmQtKvh4COl5kULh6Nt6r4jnDLNjMh829L4wMges3V83emHMpnRCv6ogDlu9oQ6yPDVj2satEYZCcfk5L9oH/RcWc5Usv5lzVQ1MQ9S4nYfwHXy4XfZe5XdAbrbnLVn+exKgltRX6s3rBgqGkZkWh17Wi1rHu9h4iuwLxcYiM+xgKXEQcjethXZpVnlVBLzmtMwolc13+FDP3GGj5up2E+hjU4u6qr0Wul8F3Lyr6sZIEvcmdxTBhLX87Opzc/dRuyVzcJHjYkLKdqeV065lfguzTwC5mA2REwPhQSyiIDyKb8cYup0nsqUM6IUEa+muGm0bWFf9ITxZWw4RYwC8wGolNlIrU7905TKQ= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Mar 25, 2026 at 05:09:34PM +0800, Qiliang Yuan wrote: > Most kernel noise types (TICK, TIMER, RCU, etc.) are currently > aliased to a single HK_TYPE_KERNEL_NOISE enum value. This prevents > fine-grained runtime isolation control as all masks are forced to be > identical. > > Un-alias service-specific housekeeping types in enum hk_type. > > This separation provides the necessary granularity for DHEI subsystems > to subscribe to and maintain independent affinity masks. What the hell for?