linux/include
Mikulas Patocka 3130702ac3 udlfb: set optimal write delay
commit bb24153a3f upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-09 20:04:36 +02:00
..
acpi
asm-generic ioremap: Update pgtable free interfaces with addr 2018-08-17 20:56:45 +02:00
clocksource
crypto crypto: vmac - separate tfm and request context 2018-08-17 20:56:45 +02:00
drm drm: Add DP PSR2 sink enable bit 2018-08-06 16:24:39 +02:00
dt-bindings ARM: dts: Fix omap3 off mode pull defines 2017-11-21 09:21:19 +01:00
keys
kvm KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active 2015-11-24 18:07:40 +01:00
linux iommu/vt-d: Fix dev iotlb pfsid use 2018-09-09 20:04:35 +02:00
math-emu
media videobuf2-core: Check user space planes array in dqbuf 2016-05-04 14:48:50 -07:00
memory
misc
net tcp: remove DELAYED ACK events in DCTCP 2018-08-24 13:26:59 +02:00
pcmcia
ras
rdma IB/core: Make testing MR flags for writability a static inline function 2018-08-15 17:42:06 +02:00
rxrpc
scsi scsi: sg: disable SET_FORCE_LOW_DMA 2018-01-23 19:50:14 +01:00
soc memory: tegra: Apply interrupts mask per SoC 2018-08-06 16:24:38 +02:00
sound ALSA: control: Hardening for potential Spectre v1 2018-05-02 07:53:41 -07:00
target target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK 2018-01-17 09:35:31 +01:00
trace tracing/hrtimer: Fix tracing bugs by taking all clock bases and modes into account 2018-05-30 07:48:52 +02:00
uapi seccomp: Add filter flag to opt-out of SSB mitigation 2018-07-25 10:18:27 +02:00
video udlfb: set optimal write delay 2018-09-09 20:04:36 +02:00
xen fix xen_swiotlb_dma_mmap prototype 2017-10-05 09:41:48 +02:00
Kbuild