| /openbmc/linux/net/6lowpan/ |
| H A D | Kconfig | 18 tristate "Next Header and Generic Header Compression Support"
22 Support for next header and generic header compression defined in
31 6LoWPAN IPv6 Destination Options Header compression according to
38 6LoWPAN IPv6 Fragment Header compression according to RFC6282.
44 6LoWPAN IPv6 Hop-by-Hop Options Header compression according to
51 6LoWPAN IPv6 Header compression according to RFC6282.
57 6LoWPAN IPv6 Mobility Header compression according to RFC6282.
63 6LoWPAN IPv6 Routing Header compression according to RFC6282.
69 6LoWPAN IPv6 UDP Header compression according to RFC6282.
74 6LoWPAN IPv6 Hop-by-Hop option generic header compression according
[all …]
|
| H A D | nhc.h | 16 * @_name: const char * of common header compression name.
17 * @_nexthdr: ipv6 nexthdr field for the header compression.
22 * @_compress: callback for compression call.
50 * struct lowpan_nhc - hold 6lowpan next hdr compression ifnformation
52 * @name: name of the specific next header compression
57 * @compress: callback to do the header compression.
79 * lowpan_nhc_check_compression - checks if we support compression format. If
115 * lowpan_nhc_add - register a next header compression to framework
122 * lowpan_nhc_del - delete a next header compression from framework
|
| /openbmc/qemu/ui/ |
| H A D | vnc-enc-tight.h | 36 *-- The first byte of each Tight-encoded rectangle is a "compression control
39 * bit 0: if 1, then compression stream 0 should be reset;
40 * bit 1: if 1, then compression stream 1 should be reset;
41 * bit 2: if 1, then compression stream 2 should be reset;
42 * bit 3: if 1, then compression stream 3 should be reset;
43 * bits 7-4: if 1000 (0x08), then the compression type is "fill",
44 * if 1001 (0x09), then the compression type is "jpeg",
45 * if 1010 (0x0A), then the compression type is "png",
46 * if 0xxx, then the compression type is "basic",
49 * If the compression type is "basic", then bits 6..4 of the
[all …]
|
| /openbmc/qemu/docs/ |
| H A D | multi-thread-compression.txt | 1 Use multiple thread (de)compression in live migration
21 be decompressed. Using compression in live migration can help
27 The process of compression will consume additional CPU cycles, and the
30 the total migration time. If the process of the compression is quick
32 thread compression can be used to accelerate the compression process.
35 compression, if the source and destination CPU have equal speed,
36 keeping the compression thread count 4 times the decompression
39 Compression level can be used to control the compression speed and the
40 compression ratio. High compression ratio will take more time, level 0
41 stands for no compression, level 1 stands for the best compression
[all …]
|
| /openbmc/linux/fs/squashfs/ |
| H A D | Kconfig | 8 filesystem for Linux. It uses zlib, lzo or xz compression to
91 If in doubt, select "Single threaded compression"
94 bool "Single threaded compression"
158 ZLIB compression is the standard compression used by Squashfs
159 file systems. It offers a good trade-off between compression
171 compressed with LZ4 compression. LZ4 compression is mainly
175 LZ4 is not the standard compression used in Squashfs and so most
186 compressed with LZO compression. LZO compression is mainly
190 LZO is not the standard compression used in Squashfs and so most
201 compressed with XZ compression. XZ gives better compression than
[all …]
|
| /openbmc/linux/usr/ |
| H A D | Kconfig | 112 prompt "Built-in initramfs compression mode"
116 initramfs will be compressed. Several compression algorithms are
117 available, which differ in efficiency, compression and
118 decompression speed. Compression speed is only relevant
125 High compression options are mostly useful for users who are
130 compression tool to compress the generated initram cpio file for
139 Use the old and well tested gzip compression algorithm. Gzip provides
140 a good balance between compression ratio and decompression speed and
141 has a reasonable compression speed. It is also more likely to be
149 It's compression ratio and speed is intermediate. Decompression speed
[all …]
|
| /openbmc/linux/fs/jffs2/ |
| H A D | Kconfig | 9 levelling, compression and support for hard links. You cannot use
101 bool "Advanced compression options for JFFS2"
106 compression modules, if any, are enabled in JFFS2. Removing
114 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
121 lossless data-compression library for use on virtually any computer
128 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
134 minilzo-based compression. Generally works better than Zlib.
140 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
147 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
154 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
[all …]
|
| H A D | compr.c | 24 /* Actual compression mode */
27 /* Statistics for blocks stored without compression */
32 * Return 1 to use this compression
60 * @compr: Explicit compression type to use (ie, JFFS2_COMPR_ZLIB).
61 * If 0, just take the first available compression mode.
64 * @datalen: On entry, holds the amount of data available for compression.
70 * Returns: the compression type used. Zero is used to show that the data
72 * compression mode.
84 pr_warn("No memory for compressor allocation. Compression failed.\n"); in jffs2_selected_compress()
95 /* Skip if not the desired compression type */ in jffs2_selected_compress()
[all …]
|
| /openbmc/linux/drivers/staging/media/atomisp/pci/ |
| H A D | ia_css_input_port.h | 33 /* The CSI2 interface supports 2 types of compression or can
34 * be run without compression.
37 IA_CSS_CSI2_COMPRESSION_TYPE_NONE, /** No compression */
38 IA_CSS_CSI2_COMPRESSION_TYPE_1, /** Compression scheme 1 */
39 IA_CSS_CSI2_COMPRESSION_TYPE_2 /** Compression scheme 2 */
44 /** Compression used */
46 /** Compressed bits per pixel (only when compression is enabled) */
48 /** Uncompressed bits per pixel (only when compression is enabled) */
58 struct ia_css_csi2_compression compression; /** Compression used */ member
|
| /openbmc/linux/include/linux/ |
| H A D | zstd.h | 67 * zstd_min_clevel() - minimum allowed compression level
69 * Return: The minimum allowed compression level.
74 * zstd_max_clevel() - maximum allowed compression level
76 * Return: The maximum allowed compression level.
83 * enum zstd_strategy - zstd compression search strategy
90 * struct zstd_compression_parameters - zstd compression parameters
92 * compression, and more memory needed during decompression.
93 * @chainLog: Fully searched segment. Larger means more compression,
95 * @hashLog: Dispatch table. Larger means more compression,
97 * @searchLog: Number of searches. Larger means more compression and slower.
[all …]
|
| H A D | zlib.h | 1 /* zlib.h -- interface of the 'zlib' general purpose compression library
53 The 'zlib' compression library provides in-memory compression and
55 data. This version of the library supports only one compression method
59 Compression can be done in a single step if the buffers are large
61 repeated calls of the compression function. In the latter case, the
74 file compression on file systems, has a larger header than zlib to maintain
110 compression library and must not be updated by the application.
114 memory management. The compression library attaches no meaning to the
128 compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
131 progress reports. After compression, total_in holds the total size of
[all …]
|
| H A D | zstd_lib.h | 35 zstd, short for Zstandard, is a fast lossless compression algorithm, targeting
36 real-time compression scenarios at zlib-level and better compression ratios.
37 The zstd compression library provides in-memory compression and decompression
40 The library supports regular compression levels from 1 up to ZSTD_maxCLevel(),
43 compression levels, which extend the range of speed vs. ratio preferences.
44 The lower the level, the faster the speed (at the cost of compression).
46 Compression can be done in:
49 - unbounded multiple steps (described as Streaming compression)
51 The compression ratio achievable on small data can be highly improved using
52 a dictionary. Dictionary compression can be performed in:
[all …]
|
| /openbmc/u-boot/lib/lzma/ |
| H A D | lzma.txt | 5 and tools you need to develop applications that use LZMA compression.
7 LZMA is default and general compression method of 7z format
8 in 7-Zip compression program (www.7-zip.org). LZMA provides high
9 compression ratio and very fast decompression.
11 LZMA is an improved version of famous LZ77 compression algorithm.
12 It was improved in way of maximum increasing of compression ratio,
54 methods.txt - Compression method IDs for .7z
92 Compress - files related to compression/decompression
102 LzmaCon - lzma.exe: LZMA compression/decompression
117 Compress - files related to compression/decompression
[all …]
|
| /openbmc/linux/Documentation/admin-guide/blockdev/ |
| H A D | zram.rst | 10 in memory itself. These disks allow very fast I/O and compression provides
74 2) Set max number of compression streams
78 allocate multiple compression streams - one per online CPU - thus
79 allowing several concurrent compression operations. The number of
80 allocated compression streams goes down when some of the CPUs
81 become offline. There is no single-compression-stream mode anymore,
88 3) Select compression algorithm
92 currently selected (shown in square brackets) compression algorithms,
93 or change the selected compression algorithm (once the device is initialised
94 there is no way to change compression algorithm).
[all …]
|
| /openbmc/qemu/docs/devel/migration/ |
| H A D | qpl-compression.rst | 2 QPL Compression
5 provide compression and decompression features and it is based on deflate
6 compression algorithm (RFC 1951).
8 The ``QPL`` compression relies on Intel In-Memory Analytics Accelerator(``IAA``)
16 QPL Compression Framework
115 - 8 engines and 1 work queue are configured in group 0, so all compression jobs
163 The multifd migration with ``QPL`` compression method will use all work
193 How To Use QPL Compression In Migration
204 4 - Enable ``QPL`` compression during migration
206 Set ``migrate_set_parameter multifd-compression qpl`` when migrating, the
[all …]
|
| /openbmc/u-boot/doc/uImage.FIT/ |
| H A D | multi_spl.its | 27 compression = "none";
35 compression = "none";
44 compression = "none";
51 compression = "none";
59 compression = "none";
67 compression = "none";
75 compression = "none";
|
| H A D | multi.its | 18 compression = "gzip";
35 compression = "gzip";
49 compression = "gzip";
63 compression = "gzip";
77 compression = "gzip";
90 compression = "none";
101 compression = "none";
|
| /openbmc/linux/drivers/crypto/nx/ |
| H A D | Kconfig | 16 tristate "Compression acceleration support"
21 Support for PowerPC Nest (NX) compression acceleration. This
30 tristate "Compression acceleration support on pSeries platform"
35 Support for PowerPC Nest (NX) compression acceleration. This
41 tristate "Compression acceleration support on PowerNV platform"
46 Support for PowerPC Nest (NX) compression acceleration. This
|
| /openbmc/linux/drivers/crypto/intel/qat/ |
| H A D | Kconfig | 24 for accelerating crypto and compression workloads.
35 for accelerating crypto and compression workloads.
46 for accelerating crypto and compression workloads.
57 for accelerating crypto and compression workloads.
70 Virtual Function for accelerating crypto and compression workloads.
82 Virtual Function for accelerating crypto and compression workloads.
94 Virtual Function for accelerating crypto and compression workloads.
|
| /openbmc/linux/drivers/media/usb/pwc/ |
| H A D | pwc-ctrl.c | 71 /* Entries for the Nala (645/646) camera; the Nala doesn't have compression
142 int frames, int *compression, int send_to_cam) in set_video_mode_Nala() argument
197 if (pdev->release < 5) { /* 4 fold compression */ in set_video_mode_Nala()
209 /* Let pwc-if.c:isoc_init know we don't support higher compression */ in set_video_mode_Nala()
210 *compression = 3; in set_video_mode_Nala()
217 int frames, int *compression, int send_to_cam) in set_video_mode_Timon() argument
222 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Timon()
232 /* Find a supported framerate with progressively higher compression */ in set_video_mode_Timon()
234 pChoose = &Timon_table[size][fps][*compression]; in set_video_mode_Timon()
237 (*compression)++; in set_video_mode_Timon()
[all …]
|
| /openbmc/linux/drivers/net/ppp/ |
| H A D | Kconfig | 39 tristate "PPP BSD-Compress compression"
42 Support for the BSD-Compress compression method for PPP, which uses
43 the LZW compression method to compress each PPP packet before it is
45 (usually your ISP) has to support the BSD-Compress compression
49 The PPP Deflate compression method ("PPP Deflate compression",
53 Note that the BSD compression code will always be compiled as a
58 tristate "PPP Deflate compression"
63 Support for the Deflate compression method for PPP, which uses the
67 Deflate compression method as well for this to be useful. Even if
86 tristate "PPP MPPE compression (encryption)"
|
| /openbmc/linux/fs/f2fs/ |
| H A D | Kconfig | 97 bool "F2FS compression feature"
100 Enable filesystem-level compression on f2fs regular files,
101 multiple back-end compression algorithms are supported.
104 bool "LZO compression support"
111 bool "LZO-RLE compression support"
118 bool "LZ4 compression support"
125 bool "LZ4HC compression support"
133 bool "ZSTD compression support"
|
| /openbmc/linux/Documentation/networking/ |
| H A D | fib_trie.rst | 16 indexed through a subset of the key. See Level Compression.
22 child array - the "child index". See Level Compression.
26 the child array. See Path Compression.
28 Path Compression / skipped bits
34 deviations. These "skipped bits" constitute Path Compression.
39 Level Compression / child arrays
73 level compression algorithm on part of the trie.
76 Looks up a key, deletes it and runs the level compression algorithm.
82 to implement level compression.
87 level compression. This part follows the original paper pretty closely
|
| /openbmc/qemu/tests/qemu-iotests/ |
| H A D | 287 | 4 # Test case for an image using zstd compression
56 if echo "$output" | grep -q "Parameter 'compression-type' does not accept value 'zstd'"; then
61 echo "=== Testing compression type incompatible bit setting for zlib ==="
64 _qcow2_dump_header --no-filter-compression | grep incompatible_features
67 echo "=== Testing compression type incompatible bit setting for zstd ==="
70 _qcow2_dump_header --no-filter-compression | grep incompatible_features
78 _qcow2_dump_header --no-filter-compression | grep incompatible_features
90 _qcow2_dump_header --no-filter-compression | grep incompatible_features
97 echo "=== Testing compression type values ==="
|
| /openbmc/linux/include/crypto/ |
| H A D | acompress.h | 3 * Asynchronous Compression operations
20 * struct acomp_req - asynchronous (de)compression request
48 * @reqsize: Context size for (de)compression requests
89 * DOC: Asynchronous Compression API
91 * The Asynchronous Compression API is used with the algorithms of type
98 * compression algorithm e.g. "deflate"
102 * Allocate a handle for a compression algorithm. The returned struct
104 * API invocation for the compression operations.
114 * compression algorithm e.g. "deflate"
119 * Allocate a handle for a compression algorithm. Drivers should try to use
[all …]
|