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From: Qiliang Yuan <realwujing@gmail.com>
To: peterz@infradead.org
Cc: longman@redhat.com, cgroups@vger.kernel.org,
	akpm@linux-foundation.org, anna-maria@linutronix.de,
	boqun.feng@gmail.com, bsegall@google.com,
	dietmar.eggemann@arm.com, frederic@kernel.org,
	hannes@cmpxchg.org, jackmanb@google.com, jiangshanlai@gmail.com,
	joelagnelf@nvidia.com, josh@joshtriplett.org,
	juri.lelli@redhat.com, linux-kernel@vger.kernel.org,
	linux-kselftest@vger.kernel.org, linux-mm@kvack.org,
	mathieu.desnoyers@efficios.com, mgorman@suse.de, mhocko@suse.com,
	mingo@kernel.org, mingo@redhat.com, neeraj.upadhyay@kernel.org,
	paulmck@kernel.org, qiang.zhang@linux.dev, rcu@vger.kernel.org,
	realwujing@gmail.com, rostedt@goodmis.org, shuah@kernel.org,
	surenb@google.com, tglx@kernel.org, tj@kernel.org,
	urezki@gmail.com, vbabka@suse.cz, vincent.guittot@linaro.org,
	vschneid@redhat.com, ziy@nvidia.com
Subject: Re: [PATCH 03/15] sched/isolation: Separate housekeeping types in enum hk_type
Date: Mon, 30 Mar 2026 19:44:48 +0800	[thread overview]
Message-ID: <20260330114448.103086-1-realwujing@gmail.com> (raw)
In-Reply-To: <20260325135904.GB3738786@noisy.programming.kicks-ass.net>

On Wed, Mar 25, 2026 at 02:59:04PM +0100, Peter Zijlstra wrote:
> What the hell for?

Direct and to the point. The original intent was to allow for asymmetric 
isolation (e.g. offloading RCU callbacks while keeping specific timers 
local for very specialized real-time monitoring).

However, I agree that for 99% of use cases, this is unnecessary 
complexity. In V13, I will consolidate these independent enum types 
into a unified housekeeping mask to simplify the configuration and 
reduce the "insane configuration space" you mentioned earlier.


  reply	other threads:[~2026-03-30 11:45 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-25  9:09 [PATCH 00/15] Implementation of Dynamic Housekeeping & Enhanced Isolation (DHEI) Qiliang Yuan
2026-03-25  9:09 ` [PATCH 01/15] sched/isolation: Support dynamic allocation for housekeeping masks Qiliang Yuan
2026-03-25 13:57   ` Peter Zijlstra
2026-03-30 11:43     ` Qiliang Yuan
2026-03-31  9:23       ` Frederic Weisbecker
2026-03-31  9:31   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 02/15] sched/isolation: Introduce housekeeping notifier infrastructure Qiliang Yuan
2026-03-25 13:58   ` Peter Zijlstra
2026-03-30 11:44     ` Qiliang Yuan
2026-03-31  9:34   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 03/15] sched/isolation: Separate housekeeping types in enum hk_type Qiliang Yuan
2026-03-25 13:59   ` Peter Zijlstra
2026-03-30 11:44     ` Qiliang Yuan [this message]
2026-03-31  9:36   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 04/15] genirq: Support dynamic migration for managed interrupts Qiliang Yuan
2026-03-31  9:37   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 05/15] rcu: Support runtime NOCB initialization and dynamic offloading Qiliang Yuan
2026-03-25  9:09 ` [PATCH 06/15] sched/core: Dynamically update scheduler domain housekeeping mask Qiliang Yuan
2026-03-25 14:00   ` Peter Zijlstra
2026-03-30 11:45     ` Qiliang Yuan
2026-03-31  4:03       ` Waiman Long
2026-03-25  9:09 ` [PATCH 07/15] watchdog: Allow runtime toggle of lockup detector affinity Qiliang Yuan
2026-03-25 14:03   ` Peter Zijlstra
2026-03-30 11:45     ` Qiliang Yuan
2026-03-25  9:09 ` [PATCH 08/15] workqueue: Support dynamic housekeeping mask updates Qiliang Yuan
2026-03-31  9:39   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 09/15] mm/compaction: Support dynamic housekeeping mask updates for kcompactd Qiliang Yuan
2026-03-31  9:40   ` Frederic Weisbecker
2026-03-25  9:09 ` [PATCH 10/15] tick/nohz: Transition to dynamic full dynticks state management Qiliang Yuan
2026-03-25  9:09 ` [PATCH 11/15] sched/isolation: Implement SMT-aware isolation and safety guards Qiliang Yuan
2026-03-25  9:09 ` [PATCH 12/15] sched/isolation: Bridge boot-time parameters with dynamic isolation Qiliang Yuan
2026-03-25  9:09 ` [PATCH 13/15] sched/isolation: Implement sysfs interface for dynamic housekeeping Qiliang Yuan
2026-03-25 14:04   ` Peter Zijlstra
2026-03-30 11:46     ` Qiliang Yuan
2026-03-30 18:34       ` Tejun Heo
2026-03-31 14:38       ` Waiman Long
2026-03-25  9:09 ` [PATCH 14/15] Documentation: isolation: Document DHEI sysfs interfaces Qiliang Yuan
2026-03-25  9:09 ` [PATCH 15/15] selftests: dhei: Add functional tests for dynamic housekeeping Qiliang Yuan
2026-03-25 16:02 ` [PATCH 00/15] Implementation of Dynamic Housekeeping & Enhanced Isolation (DHEI) Tejun Heo
2026-03-30 11:41   ` Qiliang Yuan

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