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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: Sun, 25 Jan 2026 23:45:33 +0100 Message-ID: <20260125224541.50226-27-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20260125224541.50226-1-frederic@kernel.org> References: <20260125224541.50226-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam11 X-Stat-Signature: s3h6pe6coib4w5kr3msfgkh73tx4gd4z X-Rspam-User: X-Rspamd-Queue-Id: B09E6180007 X-HE-Tag: 1769381364-592459 X-HE-Meta: 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 XcS2XZQ6 5m0rDFoO1JxdfGgoyZmfLzPmgaXd/zkFLZjjZUkBJXHqrE+OOyZSiAZHyt3KTTDrAjzt1/gS9la34SpcKs44+OoLikjxMDQgSYnT7RvtUw9Z1jak2o27zvIDbXygP++0OB0vEtXz02vu5oAr+vKepxtH9kAoRfBgIbhzPxBVMeoTbUtMYg9R3vLM+fUe/VnG1ESJIarUEss1JwzMHlPKhAR3cf9pw+dBgVvC/HB7QR9E6ifYFt1CcD+sIbMAbeWIZ4A3HXY/GRmyDjyZLWUNFaklgjHrHToX8lLGrrEUfVPvNSME= 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