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Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Guenter Roeck , Frederic Weisbecker , "Paul E. McKenney" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Anna-Maria Behnsen , Ingo Molnar , Thomas Gleixner , Chen Ridong , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Valentin Schneider , K Prateek Nayak , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-hwmon@vger.kernel.org, rcu@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, Costa Shulyupin , Qiliang Yuan , Waiman Long Subject: [PATCH 17/23] sched/isolation: Extend housekeeping_dereference_check() to cover changes in nohz_full or manged_irqs cpumasks Date: Mon, 20 Apr 2026 23:03:45 -0400 Message-ID: <20260421030351.281436-18-longman@redhat.com> In-Reply-To: <20260421030351.281436-1-longman@redhat.com> References: <20260421030351.281436-1-longman@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 As we are going to make HK_TYPE_KERNEL_NOISE and HK_TYPE_MANAGED_IRQ housekeeping cpumasks run time changeable, extend housekeeping_dereference_check() to cover changes to those cpumasks as well. Signed-off-by: Waiman Long --- kernel/sched/isolation.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 1f3f1c83dd12..1647e7b08bac 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -38,7 +38,8 @@ EXPORT_SYMBOL_GPL(housekeeping_enabled); static bool housekeeping_dereference_check(enum hk_type type) { - if (IS_ENABLED(CONFIG_LOCKDEP) && type == HK_TYPE_DOMAIN) { + if (IS_ENABLED(CONFIG_LOCKDEP) && + (BIT(type) & (HK_FLAG_DOMAIN | HK_FLAG_KERNEL_NOISE | HK_FLAG_MANAGED_IRQ))) { /* Cpuset isn't even writable yet? */ if (system_state <= SYSTEM_SCHEDULING) return true; -- 2.53.0