| Commit message (Collapse) | Author | Age | Files | Lines |
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Replace FUSE_MAX_PAGES_PER_REQ with the configurable parameter max_pages to
improve performance.
Old RFC with detailed description of the problem and many fixes by Mitsuo
Hayasaka (mitsuo.hayasaka.hu@hitachi.com):
- https://lkml.org/lkml/2012/7/5/136
We've encountered performance degradation and fixed it on a big and complex
virtual environment.
Environment to reproduce degradation and improvement:
1. Add lag to user mode FUSE
Add nanosleep(&(struct timespec){ 0, 1000 }, NULL); to xmp_write_buf in
passthrough_fh.c
2. patch UM fuse with configurable max_pages parameter. The patch will be
provided latter.
3. run test script and perform test on tmpfs
fuse_test()
{
cd /tmp
mkdir -p fusemnt
passthrough_fh -o max_pages=$1 /tmp/fusemnt
grep fuse /proc/self/mounts
dd conv=fdatasync oflag=dsync if=/dev/zero of=fusemnt/tmp/tmp \
count=1K bs=1M 2>&1 | grep -v records
rm fusemnt/tmp/tmp
killall passthrough_fh
}
Test results:
passthrough_fh /tmp/fusemnt fuse.passthrough_fh \
rw,nosuid,nodev,relatime,user_id=0,group_id=0 0 0
1073741824 bytes (1.1 GB) copied, 1.73867 s, 618 MB/s
passthrough_fh /tmp/fusemnt fuse.passthrough_fh \
rw,nosuid,nodev,relatime,user_id=0,group_id=0,max_pages=256 0 0
1073741824 bytes (1.1 GB) copied, 1.15643 s, 928 MB/s
Obviously with bigger lag the difference between 'before' and 'after'
will be more significant.
Mitsuo Hayasaka, in 2012 (https://lkml.org/lkml/2012/7/5/136),
observed improvement from 400-550 to 520-740.
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Add flag returned by OPENDIR request to allow kernel to cache directory
contents in page cache. The effect of FOPEN_CACHE_DIR is twofold:
a) if not already cached, it writes entries into the cache
b) if already cached, it allows reading entries from the cache
The FOPEN_KEEP_CACHE has the same effect as on regular files: unless this
flag is given the cache is cleared upon completion of open.
So FOPEN_KEEP_CACHE and FOPEN_KEEP_CACHE flags should be used together to
make use of the directory caching facility introduced in the following
patches.
The FUSE_AUTO_INVAL_DATA flag returned in INIT reply also has the same
affect on the directory cache as it has on data cache for regular files.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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There are several FUSE filesystems that can implement server-side copy
or other efficient copy/duplication/clone methods. The copy_file_range()
syscall is the standard interface that users have access to while not
depending on external libraries that bypass FUSE.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Pull VFIO updates from Alex Williamson:
- EDID interfaces for vfio devices supporting display extensions (Gerd
Hoffmann)
- Generically select Type-1 IOMMU model support on ARM/ARM64 (Geert
Uytterhoeven)
- Quirk for VFs reporting INTx pin (Alex Williamson)
- Fix error path memory leak in MSI support (Li Qiang)
* tag 'vfio-v4.20-rc1.v2' of git://github.com/awilliam/linux-vfio:
vfio: add edid support to mbochs sample driver
vfio: add edid api for display (vgpu) devices.
drivers/vfio: Allow type-1 IOMMU instantiation with all ARM/ARM64 IOMMUs
vfio/pci: Mask buggy SR-IOV VF INTx support
vfio/pci: Fix potential memory leak in vfio_msi_cap_len
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This allows to set EDID monitor information for the vgpu display, for a
more flexible display configuration, using a special vfio region. Check
the comment describing struct vfio_region_gfx_edid for more details.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull new experimental media request API from Mauro Carvalho Chehab:
"A new media request API
This API is needed to support device drivers that can dynamically
change their parameters for each new frame. The latest versions of
Google camera and codec HAL depends on such feature.
At this stage, it supports only stateless codecs.
It has been discussed for a long time (at least over the last 3-4
years), and we finally reached to something that seem to work.
This series contain both the API and core changes required to support
it and a new m2m decoder driver (cedrus).
As the current API is still experimental, the only real driver using
it (cedrus) was added at staging[1]. We intend to keep it there for a
while, in order to test the API. Only when we're sure that this API
works for other cases (like encoders), we'll move this driver out of
staging and set the API into a stone.
[1] We added support for the vivid virtual driver (used only for
testing) to it too, as it makes easier to test the API for the ones
that don't have the cedrus hardware"
* tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (53 commits)
media: dt-bindings: Document the Rockchip VPU bindings
media: platform: Add Cedrus VPU decoder driver
media: dt-bindings: media: Document bindings for the Cedrus VPU driver
media: v4l: Add definition for the Sunxi tiled NV12 format
media: v4l: Add definitions for MPEG-2 slice format and metadata
media: videobuf2-core: Rework and rename helper for request buffer count
media: v4l2-ctrls.c: initialize an error return code with zero
media: v4l2-compat-ioctl32.c: add missing documentation for a field
media: media-request: update documentation
media: media-request: EPERM -> EACCES/EBUSY
media: v4l2-ctrls: improve media_request_(un)lock_for_update
media: v4l2-ctrls: use media_request_(un)lock_for_access
media: media-request: add media_request_(un)lock_for_access
media: vb2: set reqbufs/create_bufs capabilities
media: videodev2.h: add new capabilities for buffer types
media: buffer.rst: only set V4L2_BUF_FLAG_REQUEST_FD for QBUF
media: v4l2-ctrls: return -EACCES if request wasn't completed
media: media-request: return -EINVAL for invalid request_fds
media: vivid: add request support
media: vivid: add mc
...
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This introduces support for the Sunxi tiled NV12 format, where each
component of the YUV frame is divided into macroblocks. Hence, the size
of each plane requires specific alignment. The pixels inside each
macroblock are coded in linear order (line after line from top to
bottom).
This tiled NV12 format is used by the video engine on Allwinner
platforms: it is the default format for decoded frames (and the only
one available in the oldest supported platforms).
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Stateless video decoding engines require both the MPEG-2 slices and
associated metadata from the video stream in order to decode frames.
This introduces definitions for a new pixel format, describing buffers
with MPEG-2 slice data, as well as control structure sfor passing the
frame metadata to drivers.
This is based on work from both Florent Revest and Hugues Fruchet.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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VIDIOC_REQBUFS and VIDIOC_CREATE_BUFFERS will return capabilities
telling userspace what the given buffer type is capable of.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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When queuing buffers allow for passing the request that should
be associated with this buffer.
If V4L2_BUF_FLAG_REQUEST_FD is set, then request_fd is used as
the file descriptor.
If a buffer is stored in a request, but not yet queued to the
driver, then V4L2_BUF_FLAG_IN_REQUEST is set.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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If 'which' is V4L2_CTRL_WHICH_REQUEST_VAL, then the 'request_fd' field
can be used to specify a request for the G/S/TRY_EXT_CTRLS ioctls.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Define the public request API.
This adds the new MEDIA_IOC_REQUEST_ALLOC ioctl to allocate a request
and two ioctls that operate on a request in order to queue the
contents of the request to the driver and to re-initialize the
request.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new dvb frontend driver: lnbh29
- new sensor drivers: imx319 and imx 355
- some old soc_camera driver renames to avoid conflict with new
drivers
- new i.MX Pixel Pipeline (PXP) mem-to-mem platform driver
- a new V4L2 frontend for the FWHT codec
- several other improvements, bug fixes, code cleanups, etc
* tag 'media/v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (289 commits)
media: rename soc_camera I2C drivers
media: cec: forgot to cancel delayed work
media: vivid: Support 480p for webcam capture
media: v4l2-tpg: fix kernel oops when enabling HFLIP and OSD
media: vivid: Add 16-bit bayer to format list
media: v4l2-tpg-core: Add 16-bit bayer
media: pvrusb2: replace `printk` with `pr_*`
media: venus: vdec: fix decoded data size
media: cx231xx: fix potential sign-extension overflow on large shift
media: dt-bindings: media: rcar_vin: add device tree support for r8a7744
media: isif: fix a NULL pointer dereference bug
media: exynos4-is: make const array config_ids static
media: cx23885: make const array addr_list static
media: ivtv: make const array addr_list static
media: bttv-input: make const array addr_list static
media: cx18: Don't check for address of video_dev
media: dw9807-vcm: Fix probe error handling
media: dw9714: Remove useless error message
media: dw9714: Fix error handling in probe function
media: cec: name for RC passthrough device does not need 'RC for'
...
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If the HDMI cable is disconnected or the CEC adapter is manually
unconfigured, then all pending transmits and wait-for-replies are
aborted. Signal this with new status bits (CEC_RX/TX_STATUS_ABORTED).
If due to (usually) a driver bug a transmit never ends (i.e. the
transmit_done was never called by the driver), then when this times
out the message is marked with CEC_TX_STATUS_TIMEOUT.
This should not happen and is an indication of a driver bug.
Without a separate status bit for this it was impossible to detect
this from userspace.
The 'transmit timed out' kernel message is now a warning, so this
should be more prominent in the kernel log as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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The CTA-861 standards have been updated to refer to opRGB instead
of AdobeRGB. The official standard is in fact named opRGB, so
switch to that.
The two old defines referring to ADOBERGB in the public API are
put under #ifndef __KERNEL__ and a comment mentions that they are
deprecated.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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D4M is a mobile model from the D4XX family of Intel RealSense cameras.
This patch adds a descriptor for it, which enables reading per-frame
metadata from it.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
[laurent.pinchart@ideasonboard.com Small clarifications to the documentation]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Add a new flag to UAPI for DV timings which, whenever set,
indicates that hardware can detect the difference between
regular FPS and 1000/1001 FPS.
This is specific to HDMI receivers. Also, it is only valid
when V4L2_DV_FL_CAN_REDUCE_FPS is set.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big tty and serial pull request for 4.20-rc1
Lots of little things here, including a merge from the SPI tree in
order to keep things simpler for everyone to sync around for one
platform.
Major stuff is:
- tty buffer clearing after use
- atmel_serial fixes and additions
- xilinx uart driver updates
and of course, lots of tiny fixes and additions to individual serial
drivers.
All of these have been in linux-next with no reported issues for a
while"
* tag 'tty-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (66 commits)
of: base: Change logic in of_alias_get_alias_list()
of: base: Fix english spelling in of_alias_get_alias_list()
serial: sh-sci: do not warn if DMA transfers are not supported
serial: uartps: Do not allow use aliases >= MAX_UART_INSTANCES
tty: check name length in tty_find_polling_driver()
serial: sh-sci: Add r8a77990 support
tty: wipe buffer if not echoing data
tty: wipe buffer.
serial: fsl_lpuart: Remove the alias node dependence
TTY: sn_console: Replace spin_is_locked() with spin_trylock()
Revert "serial:serial_core: Allow use of CTS for PPS line discipline"
serial: 8250_uniphier: add auto-flow-control support
serial: 8250_uniphier: flatten probe function
serial: 8250_uniphier: remove unused "fifo-size" property
dt-bindings: serial: sh-sci: Document r8a7744 bindings
serial: uartps: Fix missing unlock on error in cdns_get_id()
tty/serial: atmel: add ISO7816 support
tty/serial_core: add ISO7816 infrastructure
serial:serial_core: Allow use of CTS for PPS line discipline
serial: docs: Fix filename for serial reference implementation
...
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We want the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the ISO7816 ioctl and associated accessors and data structure.
Drivers can then use this common implementation to handle ISO7816
(smart cards).
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
[ludovic.desroches@microchip.com: squash and rebase, removal of gpios, checkpatch fixes]
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"Amir's patches to implement superblock fanotify watches, Xiaoming's
patch to enable reporting of thread IDs in fanotify events instead of
TGIDs (sadly the patch got mis-attributed to Amir and I've noticed
only now), and a fix of possible oops on umount caused by fsnotify
infrastructure"
* tag 'for_v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Fix busy inodes during unmount
fs: group frequently accessed fields of struct super_block together
fanotify: support reporting thread id instead of process id
fanotify: add BUILD_BUG_ON() to count the bits of fanotify constants
fsnotify: convert runtime BUG_ON() to BUILD_BUG_ON()
fanotify: deprecate uapi FAN_ALL_* constants
fanotify: simplify handling of FAN_ONDIR
fsnotify: generalize handling of extra event flags
fanotify: fix collision of internal and uapi mark flags
fanotify: store fanotify_init() flags in group's fanotify_data
fanotify: add API to attach/detach super block mark
fsnotify: send path type events to group with super block marks
fsnotify: add super block object type
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In order to identify which thread triggered the event in a
multi-threaded program, add the FAN_REPORT_TID flag in fanotify_init to
opt-in for reporting the event creator's thread id information.
Signed-off-by: nixiaoming <nixiaoming@huawei.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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We do not want to add new bits to the FAN_ALL_* uapi constants
because they have been exposed to userspace. If there are programs
out there using these constants, those programs could break if
re-compiled with modified FAN_ALL_* constants and run on an old kernel.
We deprecate the uapi constants FAN_ALL_* and define new FANOTIFY_*
constants for internal use to replace them. New feature bits will be
added only to the new constants.
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Add another mark type flag FAN_MARK_FILESYSTEM for add/remove/flush
of super block mark type.
A super block watch gets all events on the filesystem, regardless of
the mount from which the mark was added, unless an ignore mask exists
on either the inode or the mount where the event was generated.
Only one of FAN_MARK_MOUNT and FAN_MARK_FILESYSTEM mark type flags
may be provided to fanotify_mark() or no mark type flag for inode mark.
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Pull drm updates from Dave Airlie:
"This is going to rebuild more than drm as it adds a new helper to
list.h for doing bulk updates. Seemed like a reasonable addition to
me.
Otherwise the usual merge window stuff lots of i915 and amdgpu, not so
much nouveau, and piles of everything else.
Core:
- Adds a new list.h helper for doing bulk list updates for TTM.
- Don't leak fb address in smem_start to userspace (comes with EXPORT
workaround for people using mali out of tree hacks)
- udmabuf device to turn memfd regions into dma-buf
- Per-plane blend mode property
- ref/unref replacements with get/put
- fbdev conflicting framebuffers code cleaned up
- host-endian format variants
- panel orientation quirk for Acer One 10
bridge:
- TI SN65DSI86 chip support
vkms:
- GEM support.
- Cursor support
amdgpu:
- Merge amdkfd and amdgpu into one module
- CEC over DP AUX support
- Picasso APU support + VCN dynamic powergating
- Raven2 APU support
- Vega20 enablement + kfd support
- ACP powergating improvements
- ABGR/XBGR display support
- VCN jpeg support
- xGMI support
- DC i2c/aux cleanup
- Ycbcr 4:2:0 support
- GPUVM improvements
- Powerplay and powerplay endian fixes
- Display underflow fixes
vmwgfx:
- Move vmwgfx specific TTM code to vmwgfx
- Split out vmwgfx buffer/resource validation code
- Atomic operation rework
bochs:
- use more helpers
- format/byteorder improvements
qxl:
- use more helpers
i915:
- GGTT coherency getparam
- Turn off resource streamer API
- More Icelake enablement + DMC firmware
- Full PPGTT for Ivybridge, Haswell and Valleyview
- DDB distribution based on resolution
- Limited range DP display support
nouveau:
- CEC over DP AUX support
- Initial HDMI 2.0 support
virtio-gpu:
- vmap support for PRIME objects
tegra:
- Initial Tegra194 support
- DMA/IOMMU integration fixes
msm:
- a6xx perf improvements + clock prefix
- GPU preemption optimisations
- a6xx devfreq support
- cursor support
rockchip:
- PX30 support
- rgb output interface support
mediatek:
- HDMI output support on mt2701 and mt7623
rcar-du:
- Interlaced modes on Gen3
- LVDS on R8A77980
- D3 and E3 SoC support
hisilicon:
- misc fixes
mxsfb:
- runtime pm support
sun4i:
- R40 TCON support
- Allwinner A64 support
- R40 HDMI support
omapdrm:
- Driver rework changing display pipeline ordering to use common code
- DMM memory barrier and irq fixes
- Errata workarounds
exynos:
- out-bridge support for LVDS bridge driver
- Samsung 16x16 tiled format support
- Plane alpha and pixel blend mode support
tilcdc:
- suspend/resume update
mali-dp:
- misc updates"
* tag 'drm-next-2018-10-24' of git://anongit.freedesktop.org/drm/drm: (1382 commits)
firmware/dmc/icl: Add missing MODULE_FIRMWARE() for Icelake.
drm/i915/icl: Fix signal_levels
drm/i915/icl: Fix DDI/TC port clk_off bits
drm/i915/icl: create function to identify combophy port
drm/i915/gen9+: Fix initial readout for Y tiled framebuffers
drm/i915: Large page offsets for pread/pwrite
drm/i915/selftests: Disable shrinker across mmap-exhaustion
drm/i915/dp: Link train Fallback on eDP only if fallback link BW can fit panel's native mode
drm/i915: Fix intel_dp_mst_best_encoder()
drm/i915: Skip vcpi allocation for MSTB ports that are gone
drm/i915: Don't unset intel_connector->mst_port
drm/i915: Only reset seqno if actually idle
drm/i915: Use the correct crtc when sanitizing plane mapping
drm/i915: Restore vblank interrupts earlier
drm/i915: Check fb stride against plane max stride
drm/amdgpu/vcn:Fix uninitialized symbol error
drm: panel-orientation-quirks: Add quirk for Acer One 10 (S1003)
drm/amd/amdgpu: Fix debugfs error handling
drm/amdgpu: Update gc_9_0 golden settings.
drm/amd/powerplay: update PPtable with DC BTC and Tvr SocLimit fields
...
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I have some pulls based on rc6, and I prefer to have an explicit backmerge.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Wavefront context save data is of interest to userspace clients for
debugging static wavefront state. The MQD contains two parameters
required to parse the control stack and the control stack itself
is kept in the MQD from gfx9 onwards.
Add an ioctl to fetch the context save area and control stack offsets
and to copy the control stack to a userspace address if it is kept in
the MQD.
Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Sean Paul requested an -rc5 backmerge from some sun4i fixes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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A driver to let userspace turn memfd regions into dma-bufs.
Use case: Allows qemu create dmabufs for the vga framebuffer or
virtio-gpu ressources. Then they can be passed around to display
those guest things on the host. To spice client for classic full
framebuffer display, and hopefully some day to wayland server for
seamless guest window display.
qemu test branch:
https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf
Cc: David Airlie <airlied@linux.ie>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
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Merge updates from Andrew Morton:
- a few misc things
- ocfs2 updates
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (132 commits)
hugetlbfs: dirty pages as they are added to pagecache
mm: export add_swap_extent()
mm: split SWP_FILE into SWP_ACTIVATED and SWP_FS
tools/testing/selftests/vm/map_fixed_noreplace.c: add test for MAP_FIXED_NOREPLACE
mm: thp: relocate flush_cache_range() in migrate_misplaced_transhuge_page()
mm: thp: fix mmu_notifier in migrate_misplaced_transhuge_page()
mm: thp: fix MADV_DONTNEED vs migrate_misplaced_transhuge_page race condition
mm/kasan/quarantine.c: make quarantine_lock a raw_spinlock_t
mm/gup: cache dev_pagemap while pinning pages
Revert "x86/e820: put !E820_TYPE_RAM regions into memblock.reserved"
mm: return zero_resv_unavail optimization
mm: zero remaining unavailable struct pages
tools/testing/selftests/vm/gup_benchmark.c: add MAP_HUGETLB option
tools/testing/selftests/vm/gup_benchmark.c: add MAP_SHARED option
tools/testing/selftests/vm/gup_benchmark.c: allow user specified file
tools/testing/selftests/vm/gup_benchmark.c: fix 'write' flag usage
mm/gup_benchmark.c: add additional pinning methods
mm/gup_benchmark.c: time put_page()
mm: don't raise MEMCG_OOM event due to failed high-order allocation
mm/page-writeback.c: fix range_cyclic writeback vs writepages deadlock
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Delay accounting already measures the time a task spends in direct reclaim
and waiting for swapin, but in low memory situations tasks spend can spend
a significant amount of their time waiting on thrashing page cache. This
isn't tracked right now.
To know the full impact of memory contention on an individual task,
measure the delay when waiting for a recently evicted active cache page to
read back into memory.
Also update tools/accounting/getdelays.c:
[hannes@computer accounting]$ sudo ./getdelays -d -p 1
print delayacct stats ON
PID 1
CPU count real total virtual total delay total delay average
50318 745000000 847346785 400533713 0.008ms
IO count delay total delay average
435 122601218 0ms
SWAP count delay total delay average
0 0 0ms
RECLAIM count delay total delay average
0 0 0ms
THRASHING count delay total delay average
19 12621439 0ms
Link: http://lkml.kernel.org/r/20180828172258.3185-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Daniel Drake <drake@endlessm.com>
Tested-by: Suren Baghdasaryan <surenb@google.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Weiner <jweiner@fb.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Enderborg <peter.enderborg@sony.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull more block layer updates from Jens Axboe:
- Set of patches improving support for zoned devices. This was ready
before the merge window, but I was late in picking it up and hence it
missed the original pull request (Damien, Christoph)
- libata no link power management quirk addition for a Samsung drive
(Diego Viola)
- Fix for a performance regression in BFQ that went into this merge
window (Federico Motta)
- Fix for a missing dma mask setting return value check (Gustavo)
- Typo in the gdrom queue failure case (me)
- NULL pointer deref fix for xen-blkfront (Vasilis Liaskovitis)
- Fixing the get_rq trace point placement in blk-mq (Xiaoguang Wang)
- Removal of a set-but-not-read variable in cdrom (zhong jiang)
* tag 'for-linus-20181026' of git://git.kernel.dk/linux-block:
libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9
block, bfq: fix asymmetric scenarios detection
gdrom: fix mistake in assignment of error
blk-mq: place trace_block_getrq() in correct place
block: Introduce blk_revalidate_disk_zones()
block: add a report_zones method
block: Expose queue nr_zones in sysfs
block: Improve zone reset execution
block: Introduce BLKGETNRZONES ioctl
block: Introduce BLKGETZONESZ ioctl
block: Limit allocation of zone descriptors for report zones
block: Introduce blkdev_nr_zones() helper
scsi: sd_zbc: Fix sd_zbc_check_zones() error checks
scsi: sd_zbc: Reduce boot device scan and revalidate time
scsi: sd_zbc: Rearrange code
cdrom: remove set but not used variable 'tocuse'
skd: fix unchecked return values
xen/blkfront: avoid NULL blkfront_info dereference on device removal
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Get a zoned block device total number of zones. The device can be a
partition of the whole device. The number of zones is always 0 for
regular block devices.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Get a zoned block device zone size in number of 512 B sectors.
The zone size is always 0 for regular block devices.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char/misc patches for 4.20-rc1.
Loads of things here, we have new code in all of these driver
subsystems:
- fpga
- stm
- extcon
- nvmem
- eeprom
- hyper-v
- gsmi
- coresight
- thunderbolt
- vmw_balloon
- goldfish
- soundwire
along with lots of fixes and minor changes to other small drivers.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (245 commits)
Documentation/security-bugs: Clarify treatment of embargoed information
lib: Fix ia64 bootloader linkage
MAINTAINERS: Clarify UIO vs UIOVEC maintainer
docs/uio: fix a grammar nitpick
docs: fpga: document programming fpgas using regions
fpga: add devm_fpga_region_create
fpga: bridge: add devm_fpga_bridge_create
fpga: mgr: add devm_fpga_mgr_create
hv_balloon: Replace spin_is_locked() with lockdep
sgi-xp: Replace spin_is_locked() with lockdep
eeprom: New ee1004 driver for DDR4 memory
eeprom: at25: remove unneeded 'at25_remove'
w1: IAD Register is yet readable trough iad sys file. Fix snprintf (%u for unsigned, count for max size).
misc: mic: scif: remove set but not used variables 'src_dma_addr, dst_dma_addr'
misc: mic: fix a DMA pool free failure
platform: goldfish: pipe: Add a blank line to separate varibles and code
platform: goldfish: pipe: Remove redundant casting
platform: goldfish: pipe: Call misc_deregister if init fails
platform: goldfish: pipe: Move the file-scope goldfish_pipe_dev variable into the driver state
platform: goldfish: pipe: Move the file-scope goldfish_pipe_miscdev variable into the driver state
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We want the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want those fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want the bugfixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This allows the context manager to retrieve information about nodes
that it holds a reference to, such as the current number of
references to those nodes.
Such information can for example be used to determine whether the
servicemanager is the only process holding a reference to a node.
This information can then be passed on to the process holding the
node, which can in turn decide whether it wants to shut down to
reduce resource usage.
Signed-off-by: Martijn Coenen <maco@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB/PHY driver patches for 4.20-rc1
Lots of USB changes in here, primarily in these areas:
- typec updates and new drivers
- new PHY drivers
- dwc2 driver updates and additions (this old core keeps getting
added to new devices.)
- usbtmc major update based on the industry group coming together and
working to add new features and performance to the driver.
- USB gadget additions for new features
- USB gadget configfs updates
- chipidea driver updates
- other USB gadget updates
- USB serial driver updates
- renesas driver updates
- xhci driver updates
- other tiny USB driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (229 commits)
usb: phy: ab8500: silence some uninitialized variable warnings
usb: xhci: tegra: Add genpd support
usb: xhci: tegra: Power-off power-domains on removal
usbip:vudc: BUG kmalloc-2048 (Not tainted): Poison overwritten
usbip: tools: fix atoi() on non-null terminated string
USB: misc: appledisplay: fix backlight update_status return code
phy: phy-pxa-usb: add a new driver
usb: host: add DT bindings for faraday fotg2
usb: host: ohci-at91: fix request of irq for optional gpio
usb/early: remove set but not used variable 'remain_length'
usb: typec: Fix copy/paste on typec_set_vconn_role() kerneldoc
usb: typec: tcpm: Report back negotiated PPS voltage and current
USB: core: remove set but not used variable 'udev'
usb: core: fix memory leak on port_dev_path allocation
USB: net2280: Remove ->disconnect() callback from net2280_pullup()
usb: dwc2: disable power_down on rockchip devices
usb: gadget: udc: renesas_usb3: add support for r8a77990
dt-bindings: usb: renesas_usb3: add bindings for r8a77990
usb: gadget: udc: renesas_usb3: Add r8a774a1 support
USB: serial: cypress_m8: remove set but not used variable 'iflag'
...
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We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB for v4.20
With 63 non-merge commits, this is not a large merge window for USB
peripheral. The largest changes go to the UVC gadget driver which a
few folks have been improving.
Apart from UVC changes, we have a few more devices being added to
Renesas USB3 and DWC3 controller drivers and a couple minor bug fixes
on other drivers.
* tag 'usb-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (63 commits)
USB: net2280: Remove ->disconnect() callback from net2280_pullup()
usb: dwc2: disable power_down on rockchip devices
usb: gadget: udc: renesas_usb3: add support for r8a77990
dt-bindings: usb: renesas_usb3: add bindings for r8a77990
usb: gadget: udc: renesas_usb3: Add r8a774a1 support
usb: gadget: udc: renesas_usb3: Fix b-device mode for "workaround"
usb: dwc2: gadget: Add handler for WkupAlert interrupt
usb: dwc2: gadget: enable WKUP_ALERT interrupt
usb: dwc2: gadget: Program GREFCLK register
usb: dwc2: gadget: Add parameters for GREFCLK register
usb: dwc2: Add definitions for new registers
usb: dwc2: Update target (u)frame calculation
usb: dwc2: Add dwc2_gadget_dec_frame_num_by_one() function
usb: dwc2: Add core parameter for service interval support
usb: dwc2: Update registers definitions to support service interval
usb: renesas_usbhs: add support for R-Car E3
dt-bindings: usb: renesas_usbhs: add bindings for r8a77990
usb: renesas_usbhs: rcar3: Use OTG mode for R-Car D3
Revert "usb: renesas_usbhs: set the mode by using extcon state for non-otg channel"
usb: gadget: f_uac2: disable IN/OUT ep if unused
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UVC gadget updates for v4.20
- configfs cleanups, fixes and extensions
- Endianness fixes
- Miscellaneous cleanups
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All UVC descriptors use little-endian format, update the data structures
accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Tested-by: Paul Elder <paul.elder@ideasonboard.com>
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We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add ioctl USBTMC_IOCTL_API_VERSION to get current API version
of usbtmc driver.
This is to allow an instrument library to determine whether
the driver API is compatible with the implementation.
The API may change in future versions. Therefore the macro
USBTMC_API_VERSION should be incremented when changing tmc.h
with new flags, ioctls or when changing a significant behavior
of the driver.
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add ioctl USBTMC_IOCTL_AUTO_ABORT to configure auto_abort for
each specific file handle.
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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add ioctl USBTMC_IOCTL_MSG_IN_ATTR that returns the specific
bmTransferAttributes field of the last DEV_DEP_MSG_IN Bulk-IN
header. This header is received by the read() function. The
meaning of the (u8) bitmap bmTransferAttributes is:
Bit 0 = EOM flag is set when the last transfer of a USBTMC
message is received.
Bit 1 = is set when the last byte is a termchar (e.g. '\n').
Note that this bit is always zero when the device does not support
the termchar feature or when termchar detection is not enabled
(see ioctl USBTMC_IOCTL_CONFIG_TERMCHAR).
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Wait until an SRQ (service request) is received on the interrupt pipe
or until the given period of time is expired. In contrast to the
poll() function this ioctl does not return when other (a)synchronous
I/O operations fail with EPOLLERR.
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The ioctl USBTMC_IOCTL_CLEANUP_IO kills all submitted urbs to OUT
and IN bulk, and clears all received data from IN bulk. Internal
transfer counters and error states are reset.
An application should use this ioctl after an asnychronous transfer
was canceled and/or error handling has finished.
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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