platform/kernel/linux-starfive.git
4 years agomedia: coda: mark last capture buffer
Philipp Zabel [Wed, 18 Mar 2020 18:35:35 +0000 (19:35 +0100)]
media: coda: mark last capture buffer

If a JPEG decoding application queues the last capture and output
buffers, issues a decoder stop command after the decoding is already
done, and then dequeues the last capture buffer, it is not marked as
last. Detect this condition in the decoder stop command and mark the
last buffer on the capture done list.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: coda: split marking last meta into helper function
Philipp Zabel [Wed, 18 Mar 2020 18:35:34 +0000 (19:35 +0100)]
media: coda: split marking last meta into helper function

Split marking the last metadata entry into a helper function to simplify
coda_decoder_cmd.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: coda: jpeg: add CODA960 JPEG decoder support
Philipp Zabel [Wed, 18 Mar 2020 18:35:33 +0000 (19:35 +0100)]
media: coda: jpeg: add CODA960 JPEG decoder support

This patch adds JPEG decoding support for CODA960, handling the JPEG
hardware directly. A separate JPEG decoder video device is created due
to the separate hardware unit and different supported pixel formats.
While the hardware can not change subsampling on the fly, it can decode
4:2:2 subsampled JPEG images into YUV422P.

[m.felsch@pengutronix.de: fix qsequence counting by explicitly
 checking for the !use_bit case]
[hverkuil-cisco@xs4all.nl: fix 'warning: missing braces around initializer']
[mchehab+huawei@kernel.org: fix 'BRACES: Unbalanced braces around else statement']

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: add v4l2 JPEG helpers
Philipp Zabel [Wed, 18 Mar 2020 18:35:32 +0000 (19:35 +0100)]
media: add v4l2 JPEG helpers

Add helpers for JPEG header parsing. They allow both scanning for marker
segment positions and later parsing the segments individually, as
required by s5p-jpeg, as well as parsing all headers in one go, as
required by coda-vpu. The frame header is always parsed, as basically
all decoders are interested in width, height, and number of components.
For convenience, the JPEG chroma subsampling factors are decoded into a
v4l2_jpeg_chroma_subsampling enum.

Only baseline and extended sequential DCT encoded JPEGs with 8-bit or
12-bit precision with up to four components are supported.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: coda: round up decoded buffer size for all codecs
Philipp Zabel [Wed, 18 Mar 2020 18:35:31 +0000 (19:35 +0100)]
media: coda: round up decoded buffer size for all codecs

The BIT decoders always write 16x16 macroblocks. Align stride and height to
avoid spilling luma data into the top of the chroma planes.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: v4l2-common: Add BGR666 to v4l2_format_info
Dafna Hirschfeld [Mon, 16 Mar 2020 07:01:23 +0000 (08:01 +0100)]
media: v4l2-common: Add BGR666 to v4l2_format_info

Add V4L2_PIX_FMT_BGR666 to the format table.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: doc-rst: in the RGB formats table add '-' in undefined bits
Dafna Hirschfeld [Mon, 16 Mar 2020 15:56:26 +0000 (16:56 +0100)]
media: doc-rst: in the RGB formats table add '-' in undefined bits

In the table of the RGB formats, add an explicit '-' signs
to cells that contain undefined bits.
This makes it more clear how many bits and bytes are used
for each format.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: imx.rst: Add example media graphs
Steve Longerbeam [Thu, 19 Mar 2020 22:59:36 +0000 (23:59 +0100)]
media: imx.rst: Add example media graphs

Add the media graph topologies for the i.MX6Q SabreSD and SabreAuto.
This makes it easier to understand the topology and follow the
entity descriptions in the following sections.

Also clarify that the SabreSD and SabreLite media pipeline config examples
are for the i.MX6Q boards.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: v4l2-common: change the pixel_enc of V4L2_PIX_FMT_GREY to YUV
Dafna Hirschfeld [Mon, 23 Mar 2020 17:36:18 +0000 (18:36 +0100)]
media: v4l2-common: change the pixel_enc of V4L2_PIX_FMT_GREY to YUV

V4L2_PIX_FMT_GREY format is Ycbcr format without
the color data, therefore its pixel_enc should
set to V4L2_PIXEL_ENC_YUV.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: usb: pvrusb2: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:46 +0000 (22:09 +0100)]
media: usb: pvrusb2: convert to use i2c_new_client_device()

Move away from the deprecated API.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Mike Isely <isely@pobox.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: usb: hdpvr: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:45 +0000 (22:09 +0100)]
media: usb: hdpvr: convert to use i2c_new_client_device()

Move away from the deprecated API and return the shiny new ERRPTR where
useful.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: usb: cx231xx: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:44 +0000 (22:09 +0100)]
media: usb: cx231xx: convert to use i2c_new_client_device()

Move away from the deprecated API and make use of the fact that
unregistering devices is NULL- and ERR_PTR-safe.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: marvell-ccic: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:43 +0000 (22:09 +0100)]
media: marvell-ccic: convert to use i2c_new_client_device()

Move away from the deprecated API and return the shiny new ERRPTR where
useful.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: pci: saa7134: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:42 +0000 (22:09 +0100)]
media: pci: saa7134: convert to use i2c_new_client_device()

Move away from the deprecated API.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: pci: cx88: convert to use i2c_new_client_device()
Wolfram Sang [Thu, 26 Mar 2020 21:09:41 +0000 (22:09 +0100)]
media: pci: cx88: convert to use i2c_new_client_device()

Move away from the deprecated API and make use of the fact that
unregistering devices is NULL- and ERR_PTR-safe.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: dt-bindings: rockchip-vpu: Convert bindings to json-schema
Ezequiel Garcia [Thu, 26 Mar 2020 19:13:43 +0000 (20:13 +0100)]
media: dt-bindings: rockchip-vpu: Convert bindings to json-schema

Convert Rockchip VPU (Hantro IP block) codec driver documentation to
json-schema.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: hantro: Refactor for V4L2 API spec compliancy
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:37 +0000 (22:34 +0100)]
media: hantro: Refactor for V4L2 API spec compliancy

Refactor how S_FMT and TRY_FMT are handled, and also make sure
internal initial format and format reset are done properly.

The latter is achieved by making sure the same hantro_{set,try}_fmt
helpers are called on all paths that set the format (which is
part of the driver state).

This commit removes the following v4l2-compliance warnings:

test VIDIOC_G_FMT: OK
fail: v4l2-test-formats.cpp(711): Video Capture Multiplanar: TRY_FMT(G_FMT) != G_FMT
test VIDIOC_TRY_FMT: FAIL
fail: v4l2-test-formats.cpp(1116): Video Capture Multiplanar: S_FMT(G_FMT) != G_FMT
test VIDIOC_S_FMT: FAIL

Reported-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: hantro: Move H264 motion vector calculation to a helper
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:36 +0000 (22:34 +0100)]
media: hantro: Move H264 motion vector calculation to a helper

Move the extra bytes calculation that are needed for H264
motion vector to a helper. This is just a cosmetic cleanup.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: hantro: Remove unneeded hantro_dec_buf_finish
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:35 +0000 (22:34 +0100)]
media: hantro: Remove unneeded hantro_dec_buf_finish

Since now .buf_prepare takes care of setting the
buffer payload size, we can get rid of this,
at least for decoders.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: hantro: Use v4l2_m2m_buf_done_and_job_finish
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:34 +0000 (22:34 +0100)]
media: hantro: Use v4l2_m2m_buf_done_and_job_finish

Let the core sort out the nuances of returning buffers
to userspace, by using the v4l2_m2m_buf_done_and_job_finish
helper.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: hantro: Set buffers' zeroth plane payload in .buf_prepare
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:33 +0000 (22:34 +0100)]
media: hantro: Set buffers' zeroth plane payload in .buf_prepare

Buffers' zeroth plane payload size is calculated at format
negotiation time, and so it can be set in .buf_prepare.

Keep in mind that, to make this change easier, hantro_buf_prepare
is refactored, using the cedrus driver as reference. This results
in cleaner code as byproduct.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: v4l2-mem2mem: return CAPTURE buffer first
Ezequiel Garcia [Wed, 25 Mar 2020 21:34:32 +0000 (22:34 +0100)]
media: v4l2-mem2mem: return CAPTURE buffer first

When the request API is used, typically an OUTPUT (src) buffer
will be part of a request. A userspace process will be typically
blocked, waiting on the request file descriptor.

Returning the OUTPUT (src) buffer will wake-up such processes,
who will immediately attempt to dequeue the CAPTURE buffer,
only to find it's still unavailable.

Therefore, change v4l2_m2m_buf_done_and_job_finish returning
the CAPTURE (dst) buffer first, to avoid signalling the request
file descriptor prematurely, i.e. before the CAPTURE buffer is done.

When the request API is not used, this change should have
no impact.

Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agoRevert "media: Kconfig: better support hybrid TV devices"
Mauro Carvalho Chehab [Tue, 14 Apr 2020 09:00:30 +0000 (11:00 +0200)]
Revert "media: Kconfig: better support hybrid TV devices"

Changing from "depends on" to "select" may cause some
side-effects. This patch is not ready to be merged yet,
as it requires some adjustments.

So, let's revert it.

This reverts commit a3b91d8bd1e034c8ed89d3f55243478af97a0a52.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: get rid of Documentation/media/
Mauro Carvalho Chehab [Tue, 10 Mar 2020 12:57:48 +0000 (13:57 +0100)]
media: docs: get rid of Documentation/media/

Now that everything got moved, we can get rid of the
old media directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: add an uAPI chapter for driver-specific stuff
Mauro Carvalho Chehab [Fri, 6 Mar 2020 07:50:46 +0000 (08:50 +0100)]
media: docs: add an uAPI chapter for driver-specific stuff

There are some uAPI stuff that are driver-specific. Add them
to the main media uAPI body.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: move driver-specific info to driver-api
Mauro Carvalho Chehab [Wed, 4 Mar 2020 14:54:10 +0000 (15:54 +0100)]
media: docs: move driver-specific info to driver-api

Those documents don't really describe the driver API.

Instead, they contain development-specific information.

Yet, as the main index file describes the content of it as:

"how specific kernel subsystems work
 from the point of view of a kernel developer"

It seems to be the better fit.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: move user-facing docs to the admin guide
Mauro Carvalho Chehab [Wed, 4 Mar 2020 12:08:03 +0000 (13:08 +0100)]
media: docs: move user-facing docs to the admin guide

Most of the driver-specific documentation is meant to help
users of the media subsystem.

Move them to the admin-guide.

It should be noticed, however, that several of those files
are outdated and will require further work in order to make
them useful again.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: move fourcc file to the uAPI document
Mauro Carvalho Chehab [Fri, 6 Mar 2020 07:34:41 +0000 (08:34 +0100)]
media: docs: move fourcc file to the uAPI document

This file gives a hint about how fourcc should be named.

It is on a very weird place, as such kind of thing belongs to the
uAPI guide.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: kAPI docs: move them to driver-api
Mauro Carvalho Chehab [Wed, 4 Mar 2020 09:50:14 +0000 (10:50 +0100)]
media: docs: kAPI docs: move them to driver-api

All those documents describe the media driver API. So, move
them to the right place within the Kernel documentation.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: move uAPI book to userspace-api/media
Mauro Carvalho Chehab [Wed, 4 Mar 2020 09:21:39 +0000 (10:21 +0100)]
media: docs: move uAPI book to userspace-api/media

Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee3862 ("docs: Create a user-space API guide").

As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.

Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split uAPI info from imx.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 07:33:37 +0000 (08:33 +0100)]
media: docs: split uAPI info from imx.rst

This file contains both driver develompent documentation and
userspace API.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split uAPI info from omap3isp.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:59:19 +0000 (07:59 +0100)]
media: docs: split uAPI info from omap3isp.rst

This file contains both driver develompent documentation and
userspace API.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split uAPI info from saa7134-devel.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:48:35 +0000 (07:48 +0100)]
media: docs: split uAPI info from saa7134-devel.rst

This file contains both driver develompent documentation and
userspace API.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split uAPI info from fimc.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:38:55 +0000 (07:38 +0100)]
media: docs: split uAPI info from fimc.rst

This file contains both driver develompent documentation and
userspace API.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split uAPI info from davinci-vpbe.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:36:13 +0000 (07:36 +0100)]
media: docs: split uAPI info from davinci-vpbe.rst

This file contains both driver develompent documentation and
userspace API.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: cx18-streams.c: fix broken references to docs
Mauro Carvalho Chehab [Fri, 6 Mar 2020 05:26:59 +0000 (06:26 +0100)]
media: docs: cx18-streams.c: fix broken references to docs

There are two places inside this file that points to the
cx2341x documentation, with was split into two. Looking
at changeset dcc0ef88209a
("V4L/DVB (10442): cx18: Fixes for enforcing when Encoder Raw VBI params can be set")
with added those comments, it was originally pointing to:

Documentation/video4linux/cx2341x/fw-encoder-api.txt

Well, the firmware details went to

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split cx2341x.rst into different audiences
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:30:50 +0000 (07:30 +0100)]
media: docs: split cx2341x.rst into different audiences

This file contains both driver develompent documentation
(basically, firmware documentation) and IVTV-specific
documentation about VBI and raw formats, focused on uAPI
development.

Split on two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split development info from cx88.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:25:55 +0000 (07:25 +0100)]
media: docs: split development info from cx88.rst

This file contains both admin and development stuff. Split on
two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split development info from bttv.rst
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:24:17 +0000 (07:24 +0100)]
media: docs: split development info from bttv.rst

This file contains both admin and development stuff. Split on
two, as they're usually read by different audiences.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split vimc.rst into devel and admin parts
Mauro Carvalho Chehab [Wed, 4 Mar 2020 16:10:12 +0000 (17:10 +0100)]
media: docs: split vimc.rst into devel and admin parts

The vimc driver has some kerneldoc markups, plus admin info.
Split it into two files.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split meye.rst into admin and uAPI docs
Mauro Carvalho Chehab [Wed, 4 Mar 2020 15:24:52 +0000 (16:24 +0100)]
media: docs: split meye.rst into admin and uAPI docs

Instead of placing both info from admin PoV and uAPI at the
same place, split into two separate documents.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split ci.rst into uAPI and user guide docs
Mauro Carvalho Chehab [Wed, 4 Mar 2020 13:31:12 +0000 (14:31 +0100)]
media: docs: split ci.rst into uAPI and user guide docs

The ci.rst file contains two parts: the first one describing
how to use the CA high level interface; the second one with
uAPI internals.

Split this on two separate files, adding the uAPI bits
to the DVB ca.rst configuration.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: split cpia2.rst on two files
Mauro Carvalho Chehab [Wed, 4 Mar 2020 15:15:25 +0000 (16:15 +0100)]
media: docs: split cpia2.rst on two files

In order to be able to better organize the subsystem, split the
cpia2 information on two files: one user-facing and another one
from Kernel development PoV.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: move soc-camera.rst to staging
Mauro Carvalho Chehab [Thu, 5 Mar 2020 06:49:04 +0000 (07:49 +0100)]
media: docs: move soc-camera.rst to staging

As the entire soc_camera driver is on staging to be removed
soon, let's place there its documentation too.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: docs: avermedia.rst: mark a table as such
Mauro Carvalho Chehab [Wed, 4 Mar 2020 11:53:28 +0000 (12:53 +0100)]
media: docs: avermedia.rst: mark a table as such

There's a table on this file, with aren't using the ReST
markups. Fix that.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: don't use visible for device type select
Mauro Carvalho Chehab [Wed, 25 Mar 2020 15:33:35 +0000 (16:33 +0100)]
media: Kconfig: don't use visible for device type select

While making the menu invisible seemed a good idea, there's
a drawback: when the menu is not visible, it is not parsing
the "default" dependency.

So, instead, let's just avoid the items at the menu to be
prompted, by using the "prompt ... if" construction.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: i2c/Kconfig: reorganize items there
Mauro Carvalho Chehab [Wed, 25 Mar 2020 14:56:15 +0000 (15:56 +0100)]
media: i2c/Kconfig: reorganize items there

Right now, there are I2C drivers that don't depend on
camera support before and after those.

Move the camera support drivers to the end, and add
a notice at the "endif", in order to make easier to
maintain and to avoid adding extra dependencies at
the other i2c/*/Kconfig files.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: Better organize the per-API options
Mauro Carvalho Chehab [Wed, 25 Mar 2020 10:15:15 +0000 (11:15 +0100)]
media: Kconfig: Better organize the per-API options

After this change, the menu is displayed like above.

1) When filtering is not active:

    --- Multimedia support
        [ ]   Filter devices by their types
        [*]   Autoselect ancillary drivers (tuners, sensors, i2c, spi, frontends)
              Media core support  --->
              Video4Linux options  --->
              Media controller options  --->
              Digital TV options  --->
              HDMI CEC options  --->
              Media drivers  --->

2) When filtering is active:

    --- Multimedia support
        [*]   Filter devices by their types
        [*]   Autoselect ancillary drivers (tuners, sensors, i2c, spi, frontends)
              Media device types  --->
              Video4Linux options  --->
              Media controller options  --->
              Digital TV options  --->
              HDMI CEC options  --->
              Media drivers  --->

The per-API menu will only be displayed if the corresponding
core support is enabled.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: on !EMBEDDED && !EXPERT, enable driver filtering
Mauro Carvalho Chehab [Tue, 24 Mar 2020 13:29:57 +0000 (14:29 +0100)]
media: Kconfig: on !EMBEDDED && !EXPERT, enable driver filtering

Advanced and embedded users know what to do, so, by default,
they will likely want to be able to open the entire set of
Kconfig media options.

Normal "poor" users usually needs more help when setting
stuff, so let's open an more simplified version to them by
default.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move the position of sub-driver autoselection
Mauro Carvalho Chehab [Tue, 24 Mar 2020 13:24:41 +0000 (14:24 +0100)]
media: Kconfig: move the position of sub-driver autoselection

Let's place the sub-driver-autoselection option just below
the device filtering one, as it also controls a filter menu,
with is not even visible if !EXPERT && !EMBEDDED.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: place all options under a sub-menu
Mauro Carvalho Chehab [Tue, 24 Mar 2020 13:09:23 +0000 (14:09 +0100)]
media: Kconfig: place all options under a sub-menu

That should make easier for people setting the media
subsystem config options, as they'll be split by the
type of functionality that will be enabled.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move media controller core select to main Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:59:23 +0000 (13:59 +0100)]
media: Kconfig: move media controller core select to main Kconfig

Let's place the main API selections at the media/Kconfig file,
as this way we can better organize things.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move V4L2 subdev API to v4l2-core/Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:50:33 +0000 (13:50 +0100)]
media: Kconfig: move V4L2 subdev API to v4l2-core/Kconfig

This option is part of V4L2 API extra functionality set.
Move it to be at the v4l2-core/Kconfig, where it belongs,
cleaning the main Kconfig file.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move DVB-specific options to dvb-core/Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:47:11 +0000 (13:47 +0100)]
media: Kconfig: move DVB-specific options to dvb-core/Kconfig

In order to cleanup the main media Kconfig, move the DVB-core
specific options to dvb-core/Kconfig.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move CEC-specific options to cec/Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:41:57 +0000 (13:41 +0100)]
media: Kconfig: move CEC-specific options to cec/Kconfig

There's no need to have the CEC definitions inside the
media Kconfig, as the Kconfig parser doesn't require
symbols to be declared before their usages.

With that, the main Kconfig menu becomes cleaner.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: warn if drivers are filtered
Mauro Carvalho Chehab [Thu, 26 Mar 2020 08:44:13 +0000 (09:44 +0100)]
media: Kconfig: warn if drivers are filtered

As per a tester feedback, add an option to report when
the drivers are filtered at the Kconfig menu.

Cc: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: make filtering devices optional
Mauro Carvalho Chehab [Tue, 24 Mar 2020 10:36:10 +0000 (11:36 +0100)]
media: Kconfig: make filtering devices optional

The per-device option selection is a feature that some
developers love, while others hate...

So, let's make both happy by making it optional.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: use a sub-menu to select supported devices
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:25:09 +0000 (10:25 +0100)]
media: Kconfig: use a sub-menu to select supported devices

The media subsystem has hundreds of driver-specific options.
The *_SUPPORT config options work as a sort of filter,
allowing to reduce its complexity for users that won't
want to dig into thousands of options they don't need.

Yet, it the filtering options are becoming large. So, let's
place it on a sub-menu.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: reorganize the drivers menu options
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:14:15 +0000 (10:14 +0100)]
media: Kconfig: reorganize the drivers menu options

The comments before some of the drivers support look
weird, because their Kconfig have their own "comment"
directive inside it. So, rearrange them to make it
look a little nicer for the ones with are not too
familiar with the media system.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig files: use select for V4L2 subdevs and MC
Mauro Carvalho Chehab [Wed, 25 Mar 2020 14:36:56 +0000 (15:36 +0100)]
media: Kconfig files: use select for V4L2 subdevs and MC

There are lots of drivers that only work when the media controller
and/or the V4L2 subdev APIs are present.

Right now, someone need to first enable those APIs before
using those drivers.

Well, ideally, drivers, should, instead *optionally*
depend on it, in order for PC camera drivers to be able to use
them, but nowadays most drivers are UVC cameras, with don't
require a sensor driver.

So, be it.

Let's instead make them select the MEDIA_CONTROLLER and the
SUBDEV API, in order to make easier for people to be able
of enabling them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: dvb-core: Kconfig: default to use dynamic minors
Mauro Carvalho Chehab [Wed, 25 Mar 2020 14:01:25 +0000 (15:01 +0100)]
media: dvb-core: Kconfig: default to use dynamic minors

All modern Linux distributions nowadays use udev or some
alternative (like systemd). So, it makes sense to change
the default to use dynamic minors.

Please notice that this default doesn't enable any code.
It just changes the dvb-core behavior.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: add SPDX headers on Kconfig and Makefile files
Mauro Carvalho Chehab [Thu, 26 Mar 2020 15:13:16 +0000 (16:13 +0100)]
media: add SPDX headers on Kconfig and Makefile files

Most of media Kconfig/Makefile files already has SPDX,
but there are a few ones still missing. Add it to them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: fix selection for test drivers
Mauro Carvalho Chehab [Thu, 26 Mar 2020 14:47:25 +0000 (15:47 +0100)]
media: Kconfig: fix selection for test drivers

There are some long-time mistakes related to build test
drivers, with regards to depends on/select. Also, as we
now want to build any test driver without needing to
enable anything else, change the logic in order to properly
filter them.

Please notice that the PCI skeleton is somewhat an
exception, as it requires to select *both* SAMPLES and
MEDIA_TEST_SUPPORT. I almost changed it to be either one,
but decided to keep it as-is, as this is something that
we don't really need to be included on any distribution.

The only reason for someone to build it is for COMPILE_TEST
purposes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: better support hybrid TV devices
Mauro Carvalho Chehab [Wed, 25 Mar 2020 07:36:36 +0000 (08:36 +0100)]
media: Kconfig: better support hybrid TV devices

Right now, if one has an hybrid TV card, it has to select
both analog and digital TV support, as otherwise the needed
core support won't be selected.

Change the logic to auto-select the core support for those
drivers, as this is a way more intuitive.

It should be noticed that, as now both DVB_CORE and VIDEO_DEV
defaults depends on selecting a hybrid cards, we had to remove
the explicit dependencies there, in order to avoid circular
dependencies.

That requires some tricks:

1) the prompt should not be not visible when an hybrid card
   is selected, as the user shold not change it.

2) When a media hybrid device is selected, the modular
   option for DVB_CORE and VIDEO_DEV will follow the
   MEDIA_SUPPORT dependency, as we can't have a core
   built with "y" with a driver built as module.

Note: while here, moved two pure V4L2 PCI drivers out of the
"hybrid" part of config and consider pvrusb2 as an hybrid
device.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: simplify some dependencies
Mauro Carvalho Chehab [Wed, 25 Mar 2020 08:59:18 +0000 (09:59 +0100)]
media: Kconfig: simplify some dependencies

both DVB_CORE and VIDEO_DEV already depends on MEDIA_SUPPORT,
as they're below an if block.

So, remove this double dependency.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: mark other drivers as test drivers
Mauro Carvalho Chehab [Thu, 26 Mar 2020 08:45:31 +0000 (09:45 +0100)]
media: Kconfig: mark other drivers as test drivers

Neither the PCI skeleton nor the DVB dummy driver are real
drivers. They're there just as an example for a driver
writter.

Distros should not enable those drivers. So, hide them if
MEDIA_TEST_SUPPORT is not selected.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: ddbridge: use the ddbridge's own dummy fe driver
Mauro Carvalho Chehab [Thu, 26 Mar 2020 14:23:34 +0000 (15:23 +0100)]
media: ddbridge: use the ddbridge's own dummy fe driver

Cleanup the ddbridge's dummy driver by removing the parts
that aren't needed by ddbridge, adding it to the building
system and changing the binding at the driver to use the
newer function name.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: ddbridge-dummy_fe: do some vars and function renames
Mauro Carvalho Chehab [Thu, 26 Mar 2020 14:08:59 +0000 (15:08 +0100)]
media: ddbridge-dummy_fe: do some vars and function renames

As the name of this driver is now ddbridge-dummy, do some
renames internally.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: ddbridge: copy the dvb_dummy_fe driver to ddbridge
Mauro Carvalho Chehab [Thu, 26 Mar 2020 14:06:02 +0000 (15:06 +0100)]
media: ddbridge: copy the dvb_dummy_fe driver to ddbridge

As we'll be transforming the dvb-dummy-fe driver soon into a
virtual driver, let's first copy the existing one to ddbridge
as-is, as it is needed there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: mode firewire comment to firewire/Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 13:06:08 +0000 (14:06 +0100)]
media: Kconfig: mode firewire comment to firewire/Kconfig

This comment should only be visible if the DVB_FIREDTV
config will show.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move drivers-specific TTPCI_EEPROM Kconfig var
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:53:23 +0000 (13:53 +0100)]
media: Kconfig: move drivers-specific TTPCI_EEPROM Kconfig var

This option is used only by av7110 and by an USB driver. As
the av7110 is the first DVB hardware, hardly found those
days, let's opt to place it at usb/Kconfig, as the driver
with needs it might have a longer lifetime.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: move comment to siano include
Mauro Carvalho Chehab [Tue, 24 Mar 2020 12:43:23 +0000 (13:43 +0100)]
media: Kconfig: move comment to siano include

Showing this comment without showing the Siano mmc option
is very weird! Place the option together, and make it
visible only when showing Siano configuration.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: split test drivers from platform directory
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:39:43 +0000 (10:39 +0100)]
media: split test drivers from platform directory

When the first test device was added (vivi.c), there were just
one file. I was too lazy on that time to create a separate
directory just for it, so I kept it together with platform.

Now, we have vivid, vicodec, vim2m and vimc. Also, a new
virtual driver has been prepared to support DVB API.

So, it is time to solve this mess, by placing test stuff
on a separate directory.

It should be noticed that we also have some skeleton drivers
(for V4L and for DVB). For now, we'll keep them separate,
as they're not really test drivers, but instead, just
examples. The DVB frontend ones will likely be part of a new DVB
test driver. By that time, it should make sense to move them
here as well.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: update the MEDIA_SUPPORT help message
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:15:43 +0000 (10:15 +0100)]
media: Kconfig: update the MEDIA_SUPPORT help message

There are more things than just cameras and TV devices on
media. Update the help message accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: pci: move VIDEO_PCI_SKELETON to a different Kconfig
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:05:18 +0000 (10:05 +0100)]
media: pci: move VIDEO_PCI_SKELETON to a different Kconfig

The V4L2 PCI skeleton is not part of the V4L2 core. Move it
to appear together with the other PCI drivers, at the end,
as this is something that normal users don't even need to
bother.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: not all V4L2 platform drivers are for camera
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:03:16 +0000 (10:03 +0100)]
media: Kconfig: not all V4L2 platform drivers are for camera

When the platform drivers got added, they were all part of
complex camera support. This is not the case anymore, as we
now have codecs and other stuff there too.

So, fix the dependencies, in order to not require users to
manually select something that it doesn't make sense.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: Kconfig: add an option to filter in/out platform drivers
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:27:15 +0000 (10:27 +0100)]
media: Kconfig: add an option to filter in/out platform drivers

Most systems don't need support for those, while others only
need those, instead of the others.

So, add an option to filter in/out platform drivers.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agomedia: dvb-usb: auto-select CYPRESS_FIRMWARE
Mauro Carvalho Chehab [Tue, 24 Mar 2020 09:00:38 +0000 (10:00 +0100)]
media: dvb-usb: auto-select CYPRESS_FIRMWARE

At least some of the supported boards by dvb-usb
driver need to load the cypress firmware, so select
it, as otherwise missing dependencies may popup.

Also, as the cypress firmware load routines are needed
only by the dvb-usb, dvb-usb-v2 and go7007 drivers, and
those all (now) select it, there's no need to ask the
user for manually select it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4 years agoLinux 5.7-rc1
Linus Torvalds [Sun, 12 Apr 2020 19:35:55 +0000 (12:35 -0700)]
Linux 5.7-rc1

4 years agoMAINTAINERS: sort field names for all entries
Linus Torvalds [Sun, 12 Apr 2020 18:04:58 +0000 (11:04 -0700)]
MAINTAINERS: sort field names for all entries

This sorts the actual field names too, potentially causing even more
chaos and confusion at merge time if you have edited the MAINTAINERS
file.  But the end result is a more consistent layout, and hopefully
it's a one-time pain minimized by doing this just before the -rc1
release.

This was entirely scripted:

  ./scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS --order

Requested-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMAINTAINERS: sort entries by entry name
Linus Torvalds [Sun, 12 Apr 2020 18:03:52 +0000 (11:03 -0700)]
MAINTAINERS: sort entries by entry name

They are all supposed to be sorted, but people who add new entries don't
always know the alphabet.  Plus sometimes the entry names get edited,
and people don't then re-order the entry.

Let's see how painful this will be for merging purposes (the MAINTAINERS
file is often edited in various different trees), but Joe claims there's
relatively few patches in -next that touch this, and doing it just
before -rc1 is likely the best time.  Fingers crossed.

This was scripted with

  /scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS

but then I also ended up manually upper-casing a few entry names that
stood out when looking at the end result.

Requested-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMerge tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 12 Apr 2020 17:17:16 +0000 (10:17 -0700)]
Merge tag 'x86-urgent-2020-04-12' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A set of three patches to fix the fallout of the newly added split
  lock detection feature.

  It addressed the case where a KVM guest triggers a split lock #AC and
  KVM reinjects it into the guest which is not prepared to handle it.

  Add proper sanity checks which prevent the unconditional injection
  into the guest and handles the #AC on the host side in the same way as
  user space detections are handled. Depending on the detection mode it
  either warns and disables detection for the task or kills the task if
  the mode is set to fatal"

* tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
  KVM: x86: Emulate split-lock access as a write in emulator
  x86/split_lock: Provide handle_guest_split_lock()

4 years agoMerge tag 'timers-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 12 Apr 2020 17:13:14 +0000 (10:13 -0700)]
Merge tag 'timers-urgent-2020-04-12' of git://git./linux/kernel/git/tip/tip

Pull time(keeping) updates from Thomas Gleixner:

 - Fix the time_for_children symlink in /proc/$PID/ so it properly
   reflects that it part of the 'time' namespace

 - Add the missing userns limit for the allowed number of time
   namespaces, which was half defined but the actual array member was
   not added. This went unnoticed as the array has an exessive empty
   member at the end but introduced a user visible regression as the
   output was corrupted.

 - Prevent further silent ucount corruption by adding a BUILD_BUG_ON()
   to catch half updated data.

* tag 'timers-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ucount: Make sure ucounts in /proc/sys/user don't regress again
  time/namespace: Add max_time_namespaces ucount
  time/namespace: Fix time_for_children symlink

4 years agoMerge tag 'sched-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 12 Apr 2020 17:09:19 +0000 (10:09 -0700)]
Merge tag 'sched-urgent-2020-04-12' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes/updates from Thomas Gleixner:

 - Deduplicate the average computations in the scheduler core and the
   fair class code.

 - Fix a raise between runtime distribution and assignement which can
   cause exceeding the quota by up to 70%.

 - Prevent negative results in the imbalanace calculation

 - Remove a stale warning in the workqueue code which can be triggered
   since the call site was moved out of preempt disabled code. It's a
   false positive.

 - Deduplicate the print macros for procfs

 - Add the ucmap values to the SCHED_DEBUG procfs output for completness

* tag 'sched-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/debug: Add task uclamp values to SCHED_DEBUG procfs
  sched/debug: Factor out printing formats into common macros
  sched/debug: Remove redundant macro define
  sched/core: Remove unused rq::last_load_update_tick
  workqueue: Remove the warning in wq_worker_sleeping()
  sched/fair: Fix negative imbalance in imbalance calculation
  sched/fair: Fix race between runtime distribution and assignment
  sched/fair: Align rq->avg_idle and rq->avg_scan_cost

4 years agoMerge tag 'perf-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 12 Apr 2020 17:05:24 +0000 (10:05 -0700)]
Merge tag 'perf-urgent-2020-04-12' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "Three fixes/updates for perf:

   - Fix the perf event cgroup tracking which tries to track the cgroup
     even for disabled events.

   - Add Ice Lake server support for uncore events

   - Disable pagefaults when retrieving the physical address in the
     sampling code"

* tag 'perf-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Disable page faults when getting phys address
  perf/x86/intel/uncore: Add Ice Lake server uncore support
  perf/cgroup: Correct indirection in perf_less_group_idx()
  perf/core: Fix event cgroup tracking

4 years agoMerge tag 'locking-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 12 Apr 2020 16:47:10 +0000 (09:47 -0700)]
Merge tag 'locking-urgent-2020-04-12' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "Three small fixes/updates for the locking core code:

   - Plug a task struct reference leak in the percpu rswem
     implementation.

   - Document the refcount interaction with PID_MAX_LIMIT

   - Improve the 'invalid wait context' data dump in lockdep so it
     contains all information which is required to decode the problem"

* tag 'locking-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Improve 'invalid wait context' splat
  locking/refcount: Document interaction with PID_MAX_LIMIT
  locking/percpu-rwsem: Fix a task_struct refcount

4 years agoMerge tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 12 Apr 2020 16:41:01 +0000 (09:41 -0700)]
Merge tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Ten cifs/smb fixes:

   - five RDMA (smbdirect) related fixes

   - add experimental support for swap over SMB3 mounts

   - also a fix which improves performance of signed connections"

* tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: enable swap on SMB3 mounts
  smb3: change noisy error message to FYI
  smb3: smbdirect support can be configured by default
  cifs: smbd: Do not schedule work to send immediate packet on every receive
  cifs: smbd: Properly process errors on ib_post_send
  cifs: Allocate crypto structures on the fly for calculating signatures of incoming packets
  cifs: smbd: Update receive credits before sending and deal with credits roll back on failure before sending
  cifs: smbd: Check send queue size before posting a send
  cifs: smbd: Merge code to track pending packets
  cifs: ignore cached share root handle closing errors

4 years agoMerge tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sun, 12 Apr 2020 16:39:47 +0000 (09:39 -0700)]
Merge tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfix from Trond Myklebust:
 "Fix an RCU read lock leakage in pnfs_alloc_ds_commits_list()"

* tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  pNFS: Fix RCU lock leakage

4 years agoMerge tag 'nios2-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan...
Linus Torvalds [Sat, 11 Apr 2020 18:38:44 +0000 (11:38 -0700)]
Merge tag 'nios2-v5.7-rc1' of git://git./linux/kernel/git/lftan/nios2

Pull nios2 updates from Ley Foon Tan:

 - Remove nios2-dev@lists.rocketboards.org from MAINTAINERS

 - remove 'resetvalue' property

 - rename 'altr,gpio-bank-width' -> 'altr,ngpio'

 - enable the common clk subsystem on Nios2

* tag 'nios2-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  MAINTAINERS: Remove nios2-dev@lists.rocketboards.org
  arch: nios2: remove 'resetvalue' property
  arch: nios2: rename 'altr,gpio-bank-width' -> 'altr,ngpio'
  arch: nios2: Enable the common clk subsystem on Nios2

4 years agoMerge tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Sat, 11 Apr 2020 18:34:36 +0000 (11:34 -0700)]
Merge tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - fix an integer truncation in dma_direct_get_required_mask
   (Kishon Vijay Abraham)

 - fix the display of dma mapping types (Grygorii Strashko)

* tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-debug: fix displaying of dma allocation type
  dma-direct: fix data truncation in dma_direct_get_required_mask()

4 years agoMerge tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 11 Apr 2020 16:46:12 +0000 (09:46 -0700)]
Merge tag 'kbuild-v5.7-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - raise minimum supported binutils version to 2.23

 - remove old CONFIG_AS_* macros that we know binutils >= 2.23 supports

 - move remaining CONFIG_AS_* tests to Kconfig from Makefile

 - enable -Wtautological-compare warnings to catch more issues

 - do not support GCC plugins for GCC <= 4.7

 - fix various breakages of 'make xconfig'

 - include the linker version used for linking the kernel into
   LINUX_COMPILER, which is used for the banner, and also exposed to
   /proc/version

 - link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y, which
   allows us to remove the lib-ksyms.o workaround, and to solve the last
   known issue of the LLVM linker

 - add dummy tools in scripts/dummy-tools/ to enable all compiler tests
   in Kconfig, which will be useful for distro maintainers

 - support the single switch, LLVM=1 to use Clang and all LLVM utilities
   instead of GCC and Binutils.

 - support LLVM_IAS=1 to enable the integrated assembler, which is still
   experimental

* tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (36 commits)
  kbuild: fix comment about missing include guard detection
  kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
  kbuild: replace AS=clang with LLVM_IAS=1
  kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig
  kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y
  MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory
  kbuild: remove -I$(srctree)/tools/include from scripts/Makefile
  kbuild: do not pass $(KBUILD_CFLAGS) to scripts/mkcompile_h
  Documentation/llvm: fix the name of llvm-size
  kbuild: mkcompile_h: Include $LD version in /proc/version
  kconfig: qconf: Fix a few alignment issues
  kconfig: qconf: remove some old bogus TODOs
  kconfig: qconf: fix support for the split view mode
  kconfig: qconf: fix the content of the main widget
  kconfig: qconf: Change title for the item window
  kconfig: qconf: clean deprecated warnings
  gcc-plugins: drop support for GCC <= 4.7
  kbuild: Enable -Wtautological-compare
  x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2
  crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean'
  ...

4 years agomailmap: Add Sedat Dilek (replacement for expired email address)
Sedat Dilek [Sat, 11 Apr 2020 13:29:43 +0000 (15:29 +0200)]
mailmap: Add Sedat Dilek (replacement for expired email address)

I do not longer work for credativ Germany.

Please, use my private email address instead.

This is for the case when people want to CC me on
patches sent from my old business email address.

Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agopNFS: Fix RCU lock leakage
Trond Myklebust [Sat, 11 Apr 2020 15:37:18 +0000 (11:37 -0400)]
pNFS: Fix RCU lock leakage

Another brown paper bag moment. pnfs_alloc_ds_commits_list() is leaking
the RCU lock.

Fixes: a9901899b649 ("pNFS: Add infrastructure for cleaning up per-layout commit structures")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
4 years agoKVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
Xiaoyao Li [Fri, 10 Apr 2020 11:54:02 +0000 (13:54 +0200)]
KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest

Two types of #AC can be generated in Intel CPUs:
 1. legacy alignment check #AC
 2. split lock #AC

Reflect #AC back into the guest if the guest has legacy alignment checks
enabled or if split lock detection is disabled.

If the #AC is not a legacy one and split lock detection is enabled, then
invoke handle_guest_split_lock() which will either warn and disable split
lock detection for this task or force SIGBUS on it.

[ tglx: Switch it to handle_guest_split_lock() and rename the misnamed
  helper function. ]

Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/r/20200410115517.176308876@linutronix.de
4 years agoKVM: x86: Emulate split-lock access as a write in emulator
Xiaoyao Li [Fri, 10 Apr 2020 11:54:01 +0000 (13:54 +0200)]
KVM: x86: Emulate split-lock access as a write in emulator

Emulate split-lock accesses as writes if split lock detection is on
to avoid #AC during emulation, which will result in a panic(). This
should never occur for a well-behaved guest, but a malicious guest can
manipulate the TLB to trigger emulation of a locked instruction[1].

More discussion can be found at [2][3].

[1] https://lkml.kernel.org/r/8c5b11c9-58df-38e7-a514-dc12d687b198@redhat.com
[2] https://lkml.kernel.org/r/20200131200134.GD18946@linux.intel.com
[3] https://lkml.kernel.org/r/20200227001117.GX9940@linux.intel.com

Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/r/20200410115517.084300242@linutronix.de
4 years agox86/split_lock: Provide handle_guest_split_lock()
Thomas Gleixner [Fri, 10 Apr 2020 11:54:00 +0000 (13:54 +0200)]
x86/split_lock: Provide handle_guest_split_lock()

Without at least minimal handling for split lock detection induced #AC,
VMX will just run into the same problem as the VMWare hypervisor, which
was reported by Kenneth.

It will inject the #AC blindly into the guest whether the guest is
prepared or not.

Provide a function for guest mode which acts depending on the host
SLD mode. If mode == sld_warn, treat it like user space, i.e. emit a
warning, disable SLD and mark the task accordingly. Otherwise force
SIGBUS.

 [ bp: Add a !CPU_SUP_INTEL stub for handle_guest_split_lock(). ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/r/20200410115516.978037132@linutronix.de
Link: https://lkml.kernel.org/r/20200402123258.895628824@linutronix.de
4 years agokbuild: fix comment about missing include guard detection
Masahiro Yamada [Wed, 8 Apr 2020 18:29:19 +0000 (03:29 +0900)]
kbuild: fix comment about missing include guard detection

The keyword here is 'twice' to explain the trick.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 11 Apr 2020 00:57:48 +0000 (17:57 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:

 - Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc,
   gup, hugetlb, pagemap, memremap)

 - Various other things (hfs, ocfs2, kmod, misc, seqfile)

* akpm: (34 commits)
  ipc/util.c: sysvipc_find_ipc() should increase position index
  kernel/gcov/fs.c: gcov_seq_next() should increase position index
  fs/seq_file.c: seq_read(): add info message about buggy .next functions
  drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings
  change email address for Pali Rohár
  selftests: kmod: test disabling module autoloading
  selftests: kmod: fix handling test numbers above 9
  docs: admin-guide: document the kernel.modprobe sysctl
  fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
  kmod: make request_module() return an error when autoloading is disabled
  mm/memremap: set caching mode for PCI P2PDMA memory to WC
  mm/memory_hotplug: add pgprot_t to mhp_params
  powerpc/mm: thread pgprot_t through create_section_mapping()
  x86/mm: introduce __set_memory_prot()
  x86/mm: thread pgprot_t through init_memory_mapping()
  mm/memory_hotplug: rename mhp_restrictions to mhp_params
  mm/memory_hotplug: drop the flags field from struct mhp_restrictions
  mm/special: create generic fallbacks for pte_special() and pte_mkspecial()
  mm/vma: introduce VM_ACCESS_FLAGS
  mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS
  ...

4 years agoMerge tag 'docs-5.7-2' of git://git.lwn.net/linux
Linus Torvalds [Sat, 11 Apr 2020 00:53:43 +0000 (17:53 -0700)]
Merge tag 'docs-5.7-2' of git://git.lwn.net/linux

Pull Documentation fixes from Jonathan Corbet:
 "A handful of late-arriving fixes for the documentation tree"

* tag 'docs-5.7-2' of git://git.lwn.net/linux:
  Documentation: android: binderfs: add 'stats' mount option
  Documentation: driver-api/usb/writing_usb_driver.rst Updates documentation links
  docs: driver-api: address duplicate label warning
  Documentation: sysrq: fix RST formatting
  docs: kernel-parameters.txt: Fix broken references
  docs: kernel-parameters.txt: Remove nompx
  docs: filesystems: fix typo in qnx6.rst

4 years agoMerge tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubca...
Linus Torvalds [Sat, 11 Apr 2020 00:50:01 +0000 (17:50 -0700)]
Merge tag 'for-linus-5.7-ofs1' of git://git./linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "A fix and two cleanups.

  Fix:

   - Christoph Hellwig noticed that some logic I added to
     orangefs_file_read_iter introduced a race condition, so he sent a
     reversion patch. I had to modify his patch since reverting at this
     point broke Orangefs.

  Cleanups:

   - Christoph Hellwig noticed that we were doing some unnecessary work
     in orangefs_flush, so he sent in a patch that removed the un-needed
     code.

   - Al Viro told me he had trouble building Orangefs. Orangefs should
     be easy to build, even for Al :-).

     I looked back at the test server build notes in orangefs.txt, just
     in case that's where the trouble really is, and found a couple of
     typos and made a couple of clarifications"

* tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: clarify build steps for test server in orangefs.txt
  orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush
  orangefs: get rid of knob code...