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| author | Mikulas Patocka <mpatocka@redhat.com> | 2018-07-25 15:41:55 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2018-07-25 15:41:55 +0200 |
| commit | bb24153a3f13dd0dbc1f8055ad97fe346d598f66 (patch) | |
| tree | fbb89099971839d4da3fd909d0425ca9c6141942 /include/trace | |
| parent | udlfb: make a local copy of fb_ops (diff) | |
| download | linux-bb24153a3f13dd0dbc1f8055ad97fe346d598f66.tar.xz linux-bb24153a3f13dd0dbc1f8055ad97fe346d598f66.zip | |
udlfb: set optimal write delay
The default delay 5 jiffies is too much when the kernel is compiled with
HZ=100 - it results in jumpy cursor in Xwindow.
In order to find out the optimal delay, I benchmarked the driver on
1280x720x30fps video. I found out that with HZ=1000, 10ms is acceptable,
but with HZ=250 or HZ=300, we need 4ms, so that the video is played
without any frame skips.
This patch changes the delay to this value.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'include/trace')
0 files changed, 0 insertions, 0 deletions