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drm/vc4: hdmi: replace use of system_wq with system_percpu_wq

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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 patch continues the effort to refactor worqueue APIs, which has begun
with the change introducing new workqueues and a new alloc_workqueue flag:

commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("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>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Link: https://patch.msgid.link/20251105101134.82064-1-marco.crivellari@suse.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
This commit is contained in:
Marco Crivellari
2025-11-05 11:11:34 +01:00
committed by Maíra Canal
parent 20e0c19780
commit 0ef1dcf4c1
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -823,7 +823,7 @@ static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
vc4_hdmi->scdc_enabled = true;
queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work,
queue_delayed_work(system_percpu_wq, &vc4_hdmi->scrambling_work,
msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS));
}
@@ -872,7 +872,7 @@ static void vc4_hdmi_scrambling_wq(struct work_struct *work)
drm_scdc_set_high_tmds_clock_ratio(connector, true);
drm_scdc_set_scrambling(connector, true);
queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work,
queue_delayed_work(system_percpu_wq, &vc4_hdmi->scrambling_work,
msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS));
}