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92cd14408b
linux/drivers/staging
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Dmitry Osipenko 92cd14408b media: staging: media: tegra-vde: Defer dmabuf's unmapping 
Frequent IOMMU remappings take about 50% of CPU usage because there is
quite a lot to remap. Defer dmabuf's unmapping by 5 seconds in order to
mitigate the mapping overhead which goes away completely and driver works
as fast as in a case of a disabled IOMMU. The case of a disabled IOMMU
should also benefit a tad from the caching since CPU cache maintenance
that happens on dmabuf's attaching takes some resources.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-24 15:06:17 -04:00
..
android staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
axis-fifo staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
board staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
clocking-wizard staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
comedi Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
emxx_udc staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
erofs staging: erofs: set sb->s_root to NULL when failing from __getname() 2019-05-20 09:18:18 +02:00
fbtft staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
fieldbus treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
fsl-dpaa2 staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
fwserial staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
gasket mm/gup: change GUP fast to use flags rather than a write 'bool' 2019-05-14 09:47:46 -07:00
gdm724x staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
goldfish staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
greybus staging: greybus: power_supply: use struct_size() helper 2019-04-19 15:03:07 +02:00
gs_fpgaboot staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
iio Second set of IIO new device support, features and cleanup for the 5.2 cycle. 2019-04-25 10:50:51 +02:00
kpc2000 staging: kpc2000: Add dependency on MFD_CORE to kconfig symbol 'KPC2000' 2019-05-24 09:41:09 +02:00
ks7010 Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
media media: staging: media: tegra-vde: Defer dmabuf's unmapping 2019-06-24 15:06:17 -04:00
most staging: most: cdev: fix chrdev_region leak in mod_exit 2019-05-02 19:43:17 +02:00
mt7621-dma staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-dts staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-pci staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-pci-phy staging: mt7621-pci-phy: convert driver to use kernel regmap API's 2019-04-19 15:01:34 +02:00
mt7621-pinctrl staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
netlogic staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
nvec staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
octeon Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
octeon-usb staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
olpc_dcon - Fix-ups 2019-05-14 10:45:03 -07:00
pi433 Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
ralink-gdma staging: ralink-gdma: Use struct_size() in kzalloc() 2019-04-16 13:44:30 +02:00
rtl8188eu Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
rtl8192e Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
rtl8192u Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
rtl8712 staging: rtl8712: remove unnecessary NULL check 2019-04-16 13:31:58 +02:00
rtl8723bs Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
rts5208 staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
sm750fb Staging: sm750fb: Change *array into *const array 2019-04-30 15:03:42 +02:00
speakup staging: speakup: refactor to use existing code in vt 2019-04-19 15:09:10 +02:00
unisys staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
vc04_services Linux 5.2-rc4 2019-06-11 12:09:28 -04:00
vme staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
vt6655 staging: vt6655: upc: remove double blank lines 2019-04-16 13:44:30 +02:00
vt6656 staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
wilc1000 staging: wilc1000: Fix some double unlock bugs in wilc_wlan_cleanup() 2019-05-20 09:26:04 +02:00
wlan-ng staging: wlan-ng: fix adapter initialization failure 2019-05-20 09:26:04 +02:00
Kconfig drm pull request for 5.2 2019-05-08 21:35:19 -07:00
Makefile drm pull request for 5.2 2019-05-08 21:35:19 -07:00