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Thu, 06 Nov 2025 06:29:22 -0800 (PST) Received: from localhost.localdomain ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429eb49c394sm5613736f8f.41.2025.11.06.06.29.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Nov 2025 06:29:21 -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 , Matti Vaittinen , Liam Girdwood , Mark Brown Subject: [PATCH v2] regulator: irq_helper: replace use of system_wq with system_dfl_wq Date: Thu, 6 Nov 2025 15:29:14 +0100 Message-ID: <20251106142914.227875-1-marco.crivellari@suse.com> X-Mailer: git-send-email 2.51.1 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 enqueues 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. This continues the effort to refactor worqueue APIs, which has begun with the change introducing new workqueues and a new alloc_workqueue flag: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") This specific workload do not benefit from a per-cpu workqueue, so use the default unbound workqueue (system_dfl_wq) instead. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari --- drivers/regulator/irq_helpers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/irq_helpers.c b/drivers/regulator/irq_helper= s.c index 5742faee8071..5b3cfac28667 100644 --- a/drivers/regulator/irq_helpers.c +++ b/drivers/regulator/irq_helpers.c @@ -146,7 +146,7 @@ static void regulator_notifier_isr_work(struct work_str= uct *work) =20 reschedule: if (!d->high_prio) - mod_delayed_work(system_wq, &h->isr_work, + mod_delayed_work(system_dfl_wq, &h->isr_work, msecs_to_jiffies(tmo)); else mod_delayed_work(system_highpri_wq, &h->isr_work, --=20 2.51.1