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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: Wed, 24 Dec 2025 14:45:13 +0100 Message-ID: <20251224134520.33231-27-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251224134520.33231-1-frederic@kernel.org> References: <20251224134520.33231-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: A19EA120015 X-Rspamd-Server: rspam03 X-Stat-Signature: rpqxmc3sxn84h81jd44n6oj9eib9bjcd X-Rspam-User: X-HE-Tag: 1766584155-354106 X-HE-Meta: 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 e3wZztkI sYADq2+djc8g7kKk7JDl3quQF4ng5CFsHfvRX34kI2hyxND3ZfImU2SdyKMlfOwPPDURXPWrqSBi1aX/sOVKxEW+hw/HNeGBeOn8LZUftt70vPF1Cko3EW2TMH0DYr+LP2oWzgkDrvbmLwEsOMq/JPfdUpv9dS+8tx3SWMbXaxd8z6nKU0RAk/zGtMxmL/BZLwQgPjh9S5d+Bh0xglg/L7gWLCfud0/etnmQlaROHKwq9ytFHaxgC5dF0pamqr9SVhonB7mZi7wEpMc4= 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 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