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Miller" , Eric Dumazet , Gabriele Monaco , Greg Kroah-Hartman , Ingo Molnar , Jakub Kicinski , Jens Axboe , Johannes Weiner , Lai Jiangshan , Marco Crivellari , Michal Hocko , Muchun Song , Paolo Abeni , Peter Zijlstra , Phil Auld , "Rafael J . Wysocki" , Roman Gushchin , Shakeel Butt , Simon Horman , Tejun Heo , Thomas Gleixner , Vlastimil Babka , Waiman Long , Will Deacon , cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 26/33] kthread: Include kthreadd to the managed affinity list Date: Thu, 1 Jan 2026 23:13:51 +0100 Message-ID: <20260101221359.22298-27-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20260101221359.22298-1-frederic@kernel.org> References: <20260101221359.22298-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: B36784000C X-Stat-Signature: j5rfwk4xyt79db4gf9anw1oogoxuodx4 X-HE-Tag: 1767305866-997108 X-HE-Meta: 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 vjvXBVhO dUZm7ckQsa3jjjyk++a/kj9AJKloutPWJzouKYC4WKFfRXQPt/iZpFSw3iUJ/zd39cMPsXAMLsjWJDf9qz0vFKMeZQUlqm2MBAWDIAgQPKgC5prI5Cbt7Gr9JuOuKJAe40+lHcvOrpKtquInGFowkxZnnNUVXkrlEdnL9v5oH4/F2FDfV0oeIwj2WNgZvvfWPlAi9T6KJaf3btZESYVF+X5DMe8EtnqzZs9+teeXP4dkVqJFw1+eCLCxT5T40cGpMamug45DgcfSlV+jvyKUpPew0jA8aG0Kh2Fz9 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The unbound kthreads affinity management performed by cpuset is going to be imported to the kthread core code for consolidation purposes. Treat kthreadd just like any other kthread. Signed-off-by: Frederic Weisbecker Reviewed-by: Waiman Long --- kernel/kthread.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/kthread.c b/kernel/kthread.c index 51c0908d3d02..85ccf5bb17c9 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -818,12 +818,13 @@ int kthreadd(void *unused) /* Setup a clean context for our children to inherit. */ set_task_comm(tsk, comm); ignore_signals(tsk); - set_cpus_allowed_ptr(tsk, housekeeping_cpumask(HK_TYPE_KTHREAD)); set_mems_allowed(node_states[N_MEMORY]); current->flags |= PF_NOFREEZE; cgroup_init_kthreadd(); + kthread_affine_node(); + for (;;) { set_current_state(TASK_INTERRUPTIBLE); if (list_empty(&kthread_create_list)) -- 2.51.1