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drm/msm/dpu: use msm wq for vblank events

소스 검색 
DPU was using one thread per display to dispatch async commits and
vblank requests. Since clean up already happened in msm to use the
common thread for all the display commits, display threads are only
used to cater vblank requests. Since a single thread is sufficient
to do the job without any performance hits, use msm workqueue
to queue requests. A separate patch is submitted later in this
series to remove the display threads altogether.

changes in v2:
	- switch to system wq before removing disp threads (Sean Paul)
changes in v3:
	- none
changes in v4:
	- use msm wq for vblank events
changes in v5:
	- none

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
This commit is contained in:
Jeykumar Sankaran
2018-12-14 15:57:52 -08:00
committed by Sean Paul
부모 3c12568271
커밋 5aeb66563f
2개의 변경된 파일과 5개의 추가작업 그리고 6개의 파일을 삭제
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9
drivers/gpu/drm/msm/msm_drv.c
파일 보기

@@ -213,7 +213,7 @@ struct vblank_event {
bool enable;
};
static void vblank_ctrl_worker(struct kthread_work *work)
static void vblank_ctrl_worker(struct work_struct *work)
{
struct msm_vblank_ctrl *vbl_ctrl = container_of(work,
struct msm_vblank_ctrl, work);
@@ -261,8 +261,7 @@ static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list);
spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
kthread_queue_work(&priv->disp_thread[crtc_id].worker,
&vbl_ctrl->work);
queue_work(priv->wq, &vbl_ctrl->work);
return 0;
}
@@ -282,7 +281,7 @@ static int msm_drm_uninit(struct device *dev)
* work before drm_irq_uninstall() to avoid work re-enabling an
* irq after uninstall has disabled it.
*/
kthread_flush_work(&vbl_ctrl->work);
flush_work(&vbl_ctrl->work);
list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
list_del(&vbl_ev->node);
kfree(vbl_ev);
@@ -489,7 +488,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
INIT_LIST_HEAD(&priv->inactive_list);
INIT_LIST_HEAD(&priv->vblank_ctrl.event_list);
kthread_init_work(&priv->vblank_ctrl.work, vblank_ctrl_worker);
INIT_WORK(&priv->vblank_ctrl.work, vblank_ctrl_worker);
spin_lock_init(&priv->vblank_ctrl.lock);
drm_mode_config_init(ddev);