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([74.48.213.230]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2c159e25dc7sm2786389eec.27.2026.03.25.02.09.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 02:10:04 -0700 (PDT) From: Qiliang Yuan Date: Wed, 25 Mar 2026 17:09:34 +0800 Subject: [PATCH 03/15] sched/isolation: Separate housekeeping types in enum hk_type MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260325-dhei-v12-final-v1-3-919cca23cadf@gmail.com> References: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> In-Reply-To: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Thomas Gleixner , "Paul E. 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 Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Qiliang Yuan X-Mailer: b4 0.13.0 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 638DA180003 X-Stat-Signature: 9o7ozsmuem3qmncg8sogawwg5enqnhp7 X-HE-Tag: 1774429806-904628 X-HE-Meta: U2FsdGVkX1/B0UFg+gIwP8ZeymsyG8Re9IN1Evpx5H/kBHlbow649gpT/WP3KtnDrFYlTdjs0BReqjr53c/WYhw4AHIEjBZ9qZcLpxOwiJeZgdrcQIKj1VRKJ5kD+of7Nh8257haar4mF6jkzoEgGqwpBCEGZG07Exf+5GfavkKiL5dvumwLMjlP87Zm4MdnPwhN7aiTgxcv/uK4/GG6xWUexVQUGwkirrC6+CwTvgtmrrR0Jeo6QKKRzMOUEkefig7c/J1AwsrP8FHCYEFVnVjJPyn7h/Wytrj5e6b2lT7uIdp7FlRF4xdg6hiLP321yg3qvDzafC3S0UNjlzsDTx7/2lF4/zd0gKcU4lrP4jZxSD97AhWhBJvG8WE9AanS1BFthdvD5QnrRt+fwf/3/m2MrmJ3gW/xlyWZ8sQGKRGTRYkIr1MQmOh3zPCWLRv9WgHKGzcU8AJMmGWR27oGATAmj/rSDgYx6C1iLgwze3OEXFfV4D8CS0P8m7w9QgpBCboHN7Y8t1EKK7p/SaYPoBTgEFkrmbBxu0UvFLUOVSgP/2OkReWjl6m/EEHFpKjP+kTVw4DuaMtka3+NH7mxwsBcTRm4Yt6AyQMzlMjkQo4P5ocEs/+oh7o2Etdsvr35M3jZDLTFmV1efAHP/ITBX0XOtfCZq2qsLMx/t9tyZ91UFOEzcy7hKoPJgaiCLdBCNPsX0LEjK+Rtf2rydNyi01dZIx/Ri3iWVZJBogzNYPBGq426Aq47iqgCzQhZA84S7/NlPh+z/ZLZAfJUm3nMG/iqYtXn6P6XL5saJIud0I12WqiT9A09936kg9NXqx6+lMgznNOCwam6KheBv+orPDjIpufNxGkKUV1u/dUz+URyO5gwe5LRU9qht4c4CFPl5BIYUOTiEd2k+olg6pK4qWsGh5KxMDcop+3lUaOmVueYPYimo1cHpB2TM66kUWPHpXTg+n/QERc34Eq8aQk 8GKf/7SS 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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. Signed-off-by: Qiliang Yuan --- include/linux/sched/isolation.h | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index 9df55237d3901..6ec64eb3f8bcb 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -10,21 +10,18 @@ enum hk_type { HK_TYPE_DOMAIN, HK_TYPE_MANAGED_IRQ, - HK_TYPE_KERNEL_NOISE, + HK_TYPE_TICK, + HK_TYPE_TIMER, + HK_TYPE_RCU, + HK_TYPE_MISC, + HK_TYPE_WQ, + HK_TYPE_KTHREAD, HK_TYPE_MAX, - /* - * The following housekeeping types are only set by the nohz_full - * boot commandline option. So they can share the same value. - */ - HK_TYPE_TICK = HK_TYPE_KERNEL_NOISE, - HK_TYPE_TIMER = HK_TYPE_KERNEL_NOISE, - HK_TYPE_RCU = HK_TYPE_KERNEL_NOISE, - HK_TYPE_MISC = HK_TYPE_KERNEL_NOISE, - HK_TYPE_WQ = HK_TYPE_KERNEL_NOISE, - HK_TYPE_KTHREAD = HK_TYPE_KERNEL_NOISE }; +#define HK_TYPE_KERNEL_NOISE HK_TYPE_TICK + struct housekeeping_update { enum hk_type type; const struct cpumask *new_mask; -- 2.43.0