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Tue, 13 Jan 2026 05:44:16 -0800 (PST) Received: from localhost.localdomain ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-432bd0dade5sm44627237f8f.9.2026.01.13.05.44.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jan 2026 05:44:15 -0800 (PST) From: Marco Crivellari To: linux-kernel@vger.kernel.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Fei Li Subject: [PATCH] virt: acrn: Add WQ_PERCPU to alloc_workqueue users Date: Tue, 13 Jan 2026 14:44:06 +0100 Message-ID: <20260113134406.178587-1-marco.crivellari@suse.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable This continues the effort to refactor workqueue APIs, which began with the introduction of new workqueues and a new alloc_workqueue flag in: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") The refactoring is going to alter the default behavior of alloc_workqueue() to be unbound by default. With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND), any alloc_workqueue() caller that doesn=E2=80=99t explicitly specify WQ_UNB= OUND must now use WQ_PERCPU. For more details see the Link tag below. In order to keep alloc_workqueue() behavior identical, explicitly request WQ_PERCPU. Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/ Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari --- drivers/virt/acrn/irqfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virt/acrn/irqfd.c b/drivers/virt/acrn/irqfd.c index 64d32c8fbf79..e3c3d078b868 100644 --- a/drivers/virt/acrn/irqfd.c +++ b/drivers/virt/acrn/irqfd.c @@ -206,7 +206,7 @@ int acrn_irqfd_init(struct acrn_vm *vm) { INIT_LIST_HEAD(&vm->irqfds); mutex_init(&vm->irqfds_lock); - vm->irqfd_wq =3D alloc_workqueue("acrn_irqfd-%u", 0, 0, vm->vmid); + vm->irqfd_wq =3D alloc_workqueue("acrn_irqfd-%u", WQ_PERCPU, 0, vm->vmid); if (!vm->irqfd_wq) return -ENOMEM; =20 --=20 2.52.0