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Thu, 27 Nov 2025 06:41:41 -0800 (PST) Received: from localhost.localdomain ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-479110b6da9sm37351465e9.0.2025.11.27.06.41.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Nov 2025 06:41:41 -0800 (PST) From: Marco Crivellari To: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Maximilian Luz , Hans de Goede , Ilpo Jarvinen Subject: [PATCH v2 1/3] platform/surface: acpi-notify: add WQ_PERCPU to alloc_workqueue users Date: Thu, 27 Nov 2025 15:41:23 +0100 Message-ID: <20251127144125.233728-2-marco.crivellari@suse.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251127144125.233728-1-marco.crivellari@suse.com> References: <20251127144125.233728-1-marco.crivellari@suse.com> 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. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/ --- drivers/platform/surface/surface_acpi_notify.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/surface/surface_acpi_notify.c b/drivers/platf= orm/surface/surface_acpi_notify.c index 3b30cfe3466b..a9dcb0bbe90e 100644 --- a/drivers/platform/surface/surface_acpi_notify.c +++ b/drivers/platform/surface/surface_acpi_notify.c @@ -862,7 +862,7 @@ static int __init san_init(void) { int ret; =20 - san_wq =3D alloc_workqueue("san_wq", 0, 0); + san_wq =3D alloc_workqueue("san_wq", WQ_PERCPU, 0); if (!san_wq) return -ENOMEM; ret =3D platform_driver_register(&surface_acpi_notify); --=20 2.51.1