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79 lines
2.2 KiB
Diff
79 lines
2.2 KiB
Diff
From d665f01d3a849baee1b4bb8089f6b77dac77cc9d Mon Sep 17 00:00:00 2001
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From: Yann Dirson <ydirson@o-computers.com>
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Date: Thu, 14 Jan 2016 02:02:25 +0100
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Subject: [PATCH 23/27] WIP remove vsync_task from sunxi fb driver.
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Gets rid of those uninterruptible "vsync proc" kernel threads, but is
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surely only a workaround to hide the real problem.
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This does not get the system load down to zero, as an
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"usb-hardware-scan" kernel thread is still uninterruptible as well.
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This is based on loboris' patch but tries to do it more cleanly.
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---
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drivers/video/sunxi/disp2/disp/dev_fb.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/drivers/video/sunxi/disp2/disp/dev_fb.c b/drivers/video/sunxi/disp2/disp/dev_fb.c
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index 3c83abe..aded08f 100755
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--- a/drivers/video/sunxi/disp2/disp/dev_fb.c
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+++ b/drivers/video/sunxi/disp2/disp/dev_fb.c
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@@ -29,8 +29,10 @@ typedef struct
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u32 pseudo_palette [FB_MAX][16];
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wait_queue_head_t wait[3];
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unsigned long wait_count[3];
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+#if 0
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struct task_struct *vsync_task[3];
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ktime_t vsync_timestamp[3];
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+#endif
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int blank[3];
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}fb_info_t;
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@@ -692,10 +694,12 @@ static int sunxi_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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s32 drv_disp_vsync_event(u32 sel)
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{
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+#if 0
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g_fbi.vsync_timestamp[sel] = ktime_get();
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if(g_fbi.vsync_task[sel])
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wake_up_process(g_fbi.vsync_task[sel]);
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+#endif
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return 0;
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}
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@@ -735,6 +739,7 @@ static void send_vsync_work_2(struct work_struct *work)
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}
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#endif
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+#if 0
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static int vsync_proc(u32 disp)
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{
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char buf[64];
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@@ -763,6 +768,7 @@ static int vsync_thread(void *parg)
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return 0;
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}
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+#endif
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void DRV_disp_int_process(u32 sel)
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{
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@@ -1297,6 +1303,7 @@ s32 fb_init(struct platform_device *pdev)
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for(i=0; i<num_screens; i++) {
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char task_name[25];
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+#if 0
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sprintf(task_name, "vsync proc %d", i);
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g_fbi.vsync_task[i] = kthread_create(vsync_thread, (void*)i, task_name);
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if(IS_ERR(g_fbi.vsync_task[i])) {
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@@ -1307,6 +1314,7 @@ s32 fb_init(struct platform_device *pdev)
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} else {
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sched_setscheduler_nocheck(g_fbi.vsync_task[i], SCHED_FIFO, ¶m);
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}
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+#endif
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}
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init_waitqueue_head(&g_fbi.wait[0]);
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init_waitqueue_head(&g_fbi.wait[1]);
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--
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1.9.1
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