Lucas Stach 596a5a58e8 media: vb2-dc: skip CPU sync in map/unmap dma_buf ... This is rougly equivalent to ca0e68e21a (drm/prime: skip CPU sync in map/unmap dma_buf). The contig memory allocated is already device coherent memory, so there is no point in doing a CPU sync when mapping it to another device. Also most importers currently cache the mapping so the CPU sync would only happen on the first import, so we are better off with not pretending to do a cache synchronization at all. This gets rid of a lot of CPU overhead in uses where those dma-bufs are regularily imported and detached again, like Weston is currently doing in the DRM compositor. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: fix checkpatch warnings] Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>		2019-07-23 11:46:27 -04:00
..
cec	media: cec-notifier: add new notifier functions	2019-06-27 07:19:43 -04:00
common	media: vb2-dc: skip CPU sync in map/unmap dma_buf	2019-07-23 11:46:27 -04:00
dvb-core	media: dvb_frontend: split dvb_frontend_handle_ioctl function	2019-06-27 07:24:12 -04:00
dvb-frontends	media: si2168: add support for Mygica T230C v2	2019-07-22 15:30:28 -04:00
firewire	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
i2c	media: ov7670: don't return ENOTTY if SUBDEV_API is not set	2019-07-23 08:55:36 -04:00
mc	Linux 5.2-rc4	2019-06-11 12:09:28 -04:00
mmc	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
pci	media: saa7134: remove redundant assignment to variable value	2019-07-23 11:44:56 -04:00
platform	media: ti-vpe: fix leaked of_node references	2019-07-23 11:43:38 -04:00
radio	media: radio-raremono: change devm_k*alloc to k*alloc	2019-06-27 07:35:24 -04:00
rc	media: mceusb: USB reset device following USB clear halt error	2019-07-22 15:29:53 -04:00
spi	Linux 5.2-rc4	2019-06-11 12:09:28 -04:00
tuners	media updates for v5.3-rc1	2019-07-09 09:47:22 -07:00
usb	media: go7007: Fix misuse of strscpy	2019-07-23 08:53:08 -04:00
v4l2-core	media: v4l2-mem2mem: reorder checks in v4l2_m2m_poll()	2019-07-23 08:46:12 -04:00
Kconfig	media: move drivers/media/media-* to drivers/media/mc/mc-*	2019-05-28 12:15:46 -04:00
Makefile	media: move drivers/media/media-* to drivers/media/mc/mc-*	2019-05-28 12:15:46 -04:00