[PATCH] drm/amd/display: Replace use of system_wq with system_percpu_wq

[Marco Crivellari <marco.crivellari@suse.com>]

This patch continues the effort to refactor workqueue APIs, which has begun
with the changes 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")

The point of the refactoring is to eventually alter the default behavior of
workqueues to become unbound by default so that their workload placement is
optimized by the scheduler.

Before that to happen, workqueue users must be converted to the better named
new workqueues with no intended behaviour changes:

   system_wq -> system_percpu_wq
   system_unbound_wq -> system_dfl_wq

This way the old obsolete workqueues (system_wq, system_unbound_wq) can be
removed in the future.

Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index b3d6f2cd8ab6..04f09eb30e41 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -568,7 +568,7 @@ static void schedule_dc_vmin_vmax(struct amdgpu_device *adev,
 	offload_work->stream = stream;
 	offload_work->adjust = adjust_copy;
 
-	queue_work(system_wq, &offload_work->work);
+	queue_work(system_percpu_wq, &offload_work->work);
 }
 
 static void dm_vupdate_high_irq(void *interrupt_params)
@@ -4117,7 +4117,7 @@ static void handle_hpd_irq_helper(struct amdgpu_dm_connector *aconnector)
 			dc_sink_retain(aconnector->hdmi_prev_sink);
 
 		/* Schedule delayed detection. */
-		if (mod_delayed_work(system_wq,
+		if (mod_delayed_work(system_percpu_wq,
 				 &aconnector->hdmi_hpd_debounce_work,
 				 msecs_to_jiffies(aconnector->hdmi_hpd_debounce_delay_ms)))
 			drm_dbg_kms(dev, "HDMI HPD: Re-scheduled debounce work\n");
-- 
2.53.0