- 27 Jul, 2018 35 commits
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Gao Xiang authored
Currently, this patch only simply implements LZ4 decompressor due to its development priority. In the future, erofs will support more compression algorithm and format other than LZ4, thus a generic decompressor interface will be needed. Signed-off-by:
Gao Xiang <gaoxiang25@huawei.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
We have to reduce the memory cost as much as possible, so we don't want to decompress more data beyond the output buffer size, however "LZ4_decompress_safe_partial" doesn't guarantee to stop at the arbitary end position, but stop just after its current LZ4 "sequence" is completed. Link: https://groups.google.com/forum/#!topic/lz4c/_3kkz5N6n00 Therefore, I hacked the LZ4 decompression logic by hand, probably NOT the fastest approach, and hope for better implementation. Signed-off-by:
Miao Xie <miaoxie@huawei.com> Signed-off-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
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Gao Xiang authored
The unzip subsystem also uses these functions, let's export them to internal.h. Signed-off-by:
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Gao Xiang authored
This patch introduces an temporary _on-stack_ page pool to reuse the freed page directly as much as it can for better performance and release all pages at a time, it also slightly reduces the possibility of the potential memory allocation failure. Signed-off-by:
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Gao Xiang authored
This patch introduces an iterable L2P mapping operation 'erofs_map_blocks_iter'. Compared with 'erofs_map_blocks', it avoids a number of redundant 'release and regrab' processes if they request the same meta page. Signed-off-by:
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Gao Xiang authored
For each compressed cluster, there is a straight-forward way of allocating a fixed or variable-sized (for VLE) array to record the corresponding file pages for its decompression if we decide to decompress these pages asynchronously (eg. read-ahead case), however it could take much extra on-heap memory compared with traditional uncompressed filesystems. This patch introduces a pagevec solution to reuse some allocated file page in the time-sharing approach storing parts of the array itself in order to minimize the extra memory overhead, thus only a constant and small-sized array used for booting the whole array itself up will be needed. Signed-off-by:
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Gao Xiang authored
Currently kernel has scattered tagged pointer usages hacked by hand in plain code, without a unique and portable functionset to highlight the tagged pointer itself and wrap these hacked code in order to clean up all over meaningless magic masks. Therefore, this patch introduces simple generic methods to fold tags into a pointer integer. It currently supports the last n bits of the pointer for tags, which can be selected by users. In addition, it will also be used for the upcoming EROFS filesystem, which heavily uses tagged pointer approach for high performance and reducing extra memory allocation. Link: https://en.wikipedia.org/wiki/Tagged_pointerSigned-off-by:
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Chao Yu authored
Add basic tracepoints for ->readpage{,s}, ->lookup, ->destroy_inode, fill_inode and map_blocks. Reviewed-by: -
Chao Yu authored
This patch introduces error injection infrastructure, with it, we can inject error in any kernel exported common functions which erofs used, so that it can force erofs running into error paths, it turns out that tests can cover real rare paths more easily to find bugs. Reviewed-by:
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Chao Yu authored
This patch adds to support special inode, such as block dev, char, socket, pipe inode. Reviewed-by:
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Gao Xiang authored
This implements xattr and acl functionalities. Inline and shared xattrs are introduced for flexibility. Specifically, if the same xattr occurs for many times in a large number of inodes or the value of a xattr is so large that it isn't suitable to be inlined, a shared xattr kept in the xattr meta will be used instead. Signed-off-by:
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Gao Xiang authored
This commit adds Makefile and Kconfig for erofs, and updates Makefile and Kconfig files in the fs directory. Signed-off-by:
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Gao Xiang authored
This commit adds functions that transfer names to inodes. Signed-off-by:
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Gao Xiang authored
This adds functions for directory, mainly readdir. Signed-off-by:
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Gao Xiang authored
This adds core functions to get, read an inode. Signed-off-by:
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Gao Xiang authored
This commit adds functions for meta and raw data, and also provides address_space_operations for raw data access. Signed-off-by:
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Gao Xiang authored
This commit adds erofs super block operations, including (u)mount, remount_fs, show_options, statfs, in addition to some private icache management functions. Signed-off-by:
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Gao Xiang authored
- erofs_sb_info: contains erofs-specific in-memory information. - erofs_vnode: contains vfs_inode and other fs-specific information. same as super block, the only one in-memory definition exists. - erofs_map_blocks plays a role in the file L2P mapping Signed-off-by:
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Gao Xiang authored
This commit adds the on-disk layout header file of erofs. Note that the on-disk layout is still WIP, and some fields are reserved for the future use by design. Any comments are welcome. Thanks-to: Li Guifu <liguifu2@huawei.com> Thanks-to: Sun Qiuyang <sunqiuyang@huawei.com> Signed-off-by:
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Ioana Ciornei authored
Document nested structs per kernel-doc requirements by moving all comments before the actual struct. Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Ioana Ciornei authored
Document nested structs per kernel-doc requirements by moving all comments before the actual struct. Signed-off-by:
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Ioana Radulescu authored
We never really used the driver version, so no point in keeping it around. Signed-off-by:
Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by:
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Ioana Radulescu authored
In our documentation, we claim to use a 5-tuple key for Rx hash distribution of flows. The code however configures a key composed of all supported header fields. Update the Rx hash key to contain only the documented fields: {IP src, IP dst, IP nextproto, L4 src, L4 dst}, which was the original intention and makes most sense as a default. Signed-off-by: -
Ioana Radulescu authored
Error message was referencing wrong function, fix it. Signed-off-by:
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Georgios Tsotsos authored
Adding appropriate SPDX-License-Identifier (GPL-2) that were missing from code, header and make files. Signed-off-by:
Georgios Tsotsos <tsotsos@gmail.com> Signed-off-by:
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Todd Poynor authored
Print device addresses as unsigned long, not as kernel pointers. Signed-off-by:
Todd Poynor <toddpoynor@google.com> Signed-off-by:
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Todd Poynor authored
Gasket/apex drivers now use standard logging, remove TODO entry for this. Signed-off-by:
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Todd Poynor authored
Gasket logging functions no longer used. Signed-off-by:
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Todd Poynor authored
Drop gasket logging calls in favor of standard logging. Signed-off-by:
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Todd Poynor authored
Drop gasket logging calls in favor of standard logging. Signed-off-by:
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Todd Poynor authored
Replace gasket logging calls with standard logging calls. Signed-off-by:
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Todd Poynor authored
Replace gasket logging calls with standard logging calls. Signed-off-by:
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Todd Poynor authored
Convert gasket logging calls to standard functions. Signed-off-by:
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Todd Poynor authored
Use standard logging functions, drop use of gasket log functions. Signed-off-by:
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Todd Poynor authored
Save the struct device pointer to a gasket device in gasket's metadata, to facilitate use of standard logging calls and in anticipation of non-PCI gasket devices in the future. Signed-off-by:
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- 25 Jul, 2018 1 commit
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Greg Kroah-Hartman authored
Merge tag 'iio-for-4.19b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of IIO new device support, features and cleanups. There are also a couple of fixes that can wait for the coming merge window. Core new features * Support for phase channels (used in time of flight sensors amongst other things) * Support for deep UV light channel modifier. New Device Support * AD4758 DAC - New driver and dt bindings. * adxl345 - Support the adxl375 +-200g part which is register compatible. * isl29501 Time of flight sensor. - New driver * meson-saradc - Support the Meson8m2 Socs - right now this is just an ID, but there will be additional difference in future. * mpu6050 - New ID for 6515 variant. * si1133 UV sensor. - New driver * Spreadtrum SC27xx PMIC ADC - New driver and dt bindings. Features * adxl345 - Add calibration offset readback and writing. - Add sampling frequency control. Fixes and Cleanups * ad5933 - Use a macro for the channel definition to reduce duplication. * ad9523 - Replace use of core mlock with a local lock. Part of ongoing efforts to avoid confusing the purpose of mlock which is only about iio core state changes. - Fix displayed phase which was out by a factor of 10. * adxl345 - Add a link to the datasheet. - Rework the use of the address field in the chan_spec structures to allow addition of more per channel information. * adis imu - Mark switch fall throughs. * at91-sama5d2 - Fix some casting on big endian systems. * bmp280 - Drop some DT elements that aren't used and should mostly be done from userspace rather than in DT. * hx711 - add clock-frequency dt binding and resulting delay to deal with capacitance issue on some boards. - fix a spurious unit-address in the example. * ina2xx - Avoid a possible kthread_stop with a stale task_struct. * ltc2632 - Remove some unused local variables (assigned but value never used). * max1363 - Use device_get_match_data to remove some boilerplate. * mma8452 - Mark switch fall throughs. * sca3000 - Fix a missing return in a switch statement (a bad fallthrough previously!) * sigma-delta-modulator - Drop incorrect unit address from the DT example. * st_accel - Use device_get_match_data to drop some boiler plate. - Move to probe_new for i2c driver as second parameter not used. * st_sensors library - Use a strlcpy (safe in this case). * st_lsm6dsx - Add some error logging. * ti-ads7950 - SPDX - Allow simultaneous buffered and polled reads. Needed on a Lego Mindstorms EV3 where some channels are used for power supply monitoring at a very low rate. * ti-dac5571 - Remove an unused variable. * xadc - Drop some dead code.
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- 24 Jul, 2018 4 commits
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Gustavo A. R. Silva authored
The IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY case is missing a return and will fall through to the default case and errorenously return -EINVAL. Fix this by adding in missing *return ret*. Fixes: 626f971b ("staging:iio:accel:sca3000 Add write support to the low pass filter control") Reported-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Cc: <Stable@vger.kernel.org> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Lars-Peter Clausen authored
Fix the displayed phase for the ad9523 driver. Currently the most significant decimal place is dropped and all other digits are shifted one to the left. This is due to a multiplication by 10, which is not necessary, so remove it. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Fixes: cd1678f9 ("iio: frequency: New driver for AD9523 SPI Low Jitter Clock Generator") Cc: <Stable@vger.kernel.org> Signed-off-by:
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Jacob Feder authored
This IP core has read and write AXI-Stream FIFOs, the contents of which can be accessed from the AXI4 memory-mapped interface. This is useful for transferring data from a processor into the FPGA fabric. The driver creates a character device that can be read/written to with standard open/read/write/close. See Xilinx PG080 document for IP details. https://www.xilinx.com/support/documentation/ip_documentation/axi_fifo_mm_s/v4_1/pg080-axi-fifo-mm-s.pdf The driver currently supports only store-forward mode with a 32-bit AXI4 Lite interface. DOES NOT support: - cut-through mode - AXI4 (non-lite) Signed-off-by:
Jacob Feder <jacobsfeder@gmail.com> Signed-off-by:
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John Whitmore authored
Remove sQoSCtlLng. The constant sQoSCtlLng is never used in code so has been removed. This is a coding style change so should have no impact on runtime code execution. Signed-off-by:
John Whitmore <johnfwhitmore@gmail.com> Signed-off-by:
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