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Commit 1dd48e48 authored by Laurent Pinchart's avatar Laurent Pinchart
Browse files

v4l: vsp1: Fill display list headers without holding dlm spinlock 



The display list headers are filled using information from the display
list only. Lower the display list manager spinlock contention by filling
the headers without holding the lock.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: default avatarKieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent e6742e10

drivers/media/platform/vsp1/vsp1_dl.c

+4 −2
Original line number Diff line number Diff line
@@ -483,8 +483,6 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl) 
	unsigned long flags;

	bool update;



	spin_lock_irqsave(&dlm->lock, flags);



	if (dl->dlm->mode == VSP1_DL_MODE_HEADER) {

		struct vsp1_dl_list *dl_child;
@@ -501,7 +499,11 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl) 


			vsp1_dl_list_fill_header(dl_child, last);

		}

	}



	spin_lock_irqsave(&dlm->lock, flags);



	if (dl->dlm->mode == VSP1_DL_MODE_HEADER) {

		/*

		 * Commit the head display list to hardware. Chained headers

		 * will auto-start.