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Wed, 29 Oct 2025 09:56:55 -0700 (PDT) Received: from linux.fritz.box ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47718fc0335sm48393845e9.2.2025.10.29.09.56.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Oct 2025 09:56:55 -0700 (PDT) From: Marco Crivellari To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Maciej Falkowski , Karol Wachowski , Oded Gabbay Subject: [PATCH v2 1/2] accel/ivpu: replace use of system_unbound_wq with system_dfl_wq Date: Wed, 29 Oct 2025 17:56:41 +0100 Message-ID: <20251029165642.364488-2-marco.crivellari@suse.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251029165642.364488-1-marco.crivellari@suse.com> References: <20251029165642.364488-1-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-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Currently if a user enqueue a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. system_unbound_wq should be the default workqueue so as not to enforce locality constraints for random work whenever it's not required. Adding system_dfl_wq to encourage its use when unbound work should be used. The old system_unbound_wq will be kept for a few release cycles. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Reviewed-by: Karol Wachowski --- drivers/accel/ivpu/ivpu_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c index 475ddc94f1cf..ffa2ba7cafe2 100644 --- a/drivers/accel/ivpu/ivpu_pm.c +++ b/drivers/accel/ivpu/ivpu_pm.c @@ -186,7 +186,7 @@ void ivpu_pm_trigger_recovery(struct ivpu_device *vdev,= const char *reason) if (atomic_cmpxchg(&vdev->pm->reset_pending, 0, 1) =3D=3D 0) { ivpu_hw_diagnose_failure(vdev); ivpu_hw_irq_disable(vdev); /* Disable IRQ early to protect from IRQ stor= m */ - queue_work(system_unbound_wq, &vdev->pm->recovery_work); + queue_work(system_dfl_wq, &vdev->pm->recovery_work); } } =20 --=20 2.51.0