From: Marco Crivellari <marco.crivellari@suse.com>
To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Cc: Tejun Heo <tj@kernel.org>, Lai Jiangshan <jiangshanlai@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Marco Crivellari <marco.crivellari@suse.com>,
Michal Hocko <mhocko@suse.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>
Subject: [PATCH 2/5] ACPI: OSL: replace use of system_wq with system_percpu_wq
Date: Thu, 30 Oct 2025 16:47:36 +0100 [thread overview]
Message-ID: <20251030154739.262582-3-marco.crivellari@suse.com> (raw)
In-Reply-To: <20251030154739.262582-1-marco.crivellari@suse.com>
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_wq should be the per-cpu workqueue, yet in this name nothing makes
that clear, so replace system_wq with system_percpu_wq.
The old wq (system_wq) will be kept for a few release cycles.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
---
drivers/acpi/osl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 5ff343096ece..a79a5d47bdb8 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -398,7 +398,7 @@ static void acpi_os_drop_map_ref(struct acpi_ioremap *map)
list_del_rcu(&map->list);
INIT_RCU_WORK(&map->track.rwork, acpi_os_map_remove);
- queue_rcu_work(system_wq, &map->track.rwork);
+ queue_rcu_work(system_percpu_wq, &map->track.rwork);
}
/**
--
2.51.0
next prev parent reply other threads:[~2025-10-30 15:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-30 15:47 [PATCH 0/5] replace old wq(s), added WQ_PERCPU to alloc_workqueue Marco Crivellari
2025-10-30 15:47 ` [PATCH 1/5] ACPI: scan: replace use of system_unbound_wq with system_dfl_wq Marco Crivellari
2025-10-30 15:47 ` Marco Crivellari [this message]
2025-10-30 15:47 ` [PATCH 3/5] ACPI: EC: WQ_PERCPU added to alloc_workqueue users Marco Crivellari
2025-10-30 15:47 ` [PATCH 4/5] ACPI: OSL: " Marco Crivellari
2025-10-30 15:47 ` [PATCH 5/5] ACPI: thermal: " Marco Crivellari
2025-11-03 17:47 ` [PATCH 0/5] replace old wq(s), added WQ_PERCPU to alloc_workqueue Rafael J. Wysocki
2025-11-04 8:58 ` Marco Crivellari
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