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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 23/33] kthread: Include kthreadd to the managed affinity list Date: Mon, 13 Oct 2025 22:31:36 +0200 Message-ID: <20251013203146.10162-24-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013203146.10162-1-frederic@kernel.org> References: <20251013203146.10162-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Stat-Signature: o4uje49ygojdzoawaxuodr8mbdtmjgju X-Rspam-User: X-Rspamd-Queue-Id: 23D861C000C X-HE-Tag: 1760387697-449718 X-HE-Meta: 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 oNMYNle+ GVHah2KznQCZbrZaDQBRUQm7s1tV66QyATsPsJhU76eaPRgdMlmkBqJjlkN28sjX6BhKX1pXn/UWRSx+3G78RCvrJUUICPwJGIuolhiq0OYcfLCilVv+2UDvU1OlI55icuUS7Hvq3+jgkXGn1L2/ErmMsLEyxlX0Sw2u+EAa0kNEXIwG3PXZ4ap0Wfzll2n5033t24/O5dOJ6dqRNsVQoRssPWAZjjTjTSova3JJrBwEcVW3Y1+6pSo6R3ME0gs8seYSmB9juzcVP+g8= 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 --- kernel/kthread.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/kthread.c b/kernel/kthread.c index cba3d297f267..cb0be05d6091 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -820,12 +820,13 @@ 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)) -- 2.51.0