[PATCH] drm/exynos: hdmi: replace use of system_wq with system_percpu_wq

Marco Crivellari posted 1 patch 3 months ago
drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
[PATCH] drm/exynos: hdmi: replace use of system_wq with system_percpu_wq
Posted by Marco Crivellari 3 months ago
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 consistentcy cannot be addressed without refactoring the API.

This patch 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")

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/gpu/drm/exynos/exynos_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 01813e11e6c6..8e76ac8ee4e2 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1692,7 +1692,7 @@ static irqreturn_t hdmi_irq_thread(int irq, void *arg)
 {
 	struct hdmi_context *hdata = arg;
 
-	mod_delayed_work(system_wq, &hdata->hotplug_work,
+	mod_delayed_work(system_percpu_wq, &hdata->hotplug_work,
 			msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
 
 	return IRQ_HANDLED;
-- 
2.51.1
Re: [PATCH] drm/exynos: hdmi: replace use of system_wq with system_percpu_wq
Posted by Marco Crivellari 1 month, 2 weeks ago
On Tue, Nov 4, 2025 at 12:29 PM Marco Crivellari
<marco.crivellari@suse.com> wrote:
> [...]
> ---
>  drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Gentle ping.

Thanks!

-- 

Marco Crivellari

L3 Support Engineer
Re: [PATCH] drm/exynos: hdmi: replace use of system_wq with system_percpu_wq
Posted by Inki Dae 1 month, 1 week ago
Hi,

Sorry for late reply. Merged.

Thanks,
Inki Dae

2025년 12월 25일 (목) AM 12:01, Marco Crivellari <marco.crivellari@suse.com>님이 작성:
>
> On Tue, Nov 4, 2025 at 12:29 PM Marco Crivellari
> <marco.crivellari@suse.com> wrote:
> > [...]
> > ---
> >  drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Gentle ping.
>
> Thanks!
>
> --
>
> Marco Crivellari
>
> L3 Support Engineer
>
Re: [PATCH] drm/exynos: hdmi: replace use of system_wq with system_percpu_wq
Posted by Marco Crivellari 1 month, 1 week ago
On Tue, Dec 30, 2025 at 6:48 AM Inki Dae <daeinki@gmail.com> wrote:
>
> Hi,
>
> Sorry for late reply. Merged.

Hi,

No problem, thank you!

-- 

Marco Crivellari

L3 Support Engineer