drm/bridge: replace use of system_wq with system_percpu_wq

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>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20251104111339.128685-1-marco.crivellari@suse.com

diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index a094803ba7aa4e12165fcde432d4e6417fbf3676..37bb8123cf9bf9113014c3b58710a6a8ccb07e99 100644 (file)
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2048,7 +2048,7 @@ static void it6505_start_hdcp(struct it6505 *it6505)
 
        DRM_DEV_DEBUG_DRIVER(dev, "start");
        it6505_reset_hdcp(it6505);
-       queue_delayed_work(system_wq, &it6505->hdcp_work,
+       queue_delayed_work(system_percpu_wq, &it6505->hdcp_work,
                           msecs_to_jiffies(2400));
 }
 

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index 3b6b0e92cf89f2d8b773d9661b5834e8a687e650..bf4ab4eaf2697710b98f8e9d86ce2150f7291b07 100644 (file)
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -114,7 +114,7 @@ static void tfp410_hpd_callback(void *arg, enum drm_connector_status status)
 {
        struct tfp410 *dvi = arg;
 
-       mod_delayed_work(system_wq, &dvi->hpd_work,
+       mod_delayed_work(system_percpu_wq, &dvi->hpd_work,
                         msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
 }