| /Linux-v5.15/net/6lowpan/ |
| D | Kconfig | 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
80 6LoWPAN IPv6 UDP generic header compression according to RFC7400.
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| /Linux-v5.15/drivers/media/usb/pwc/ |
| D | pwc-ctrl.c | 142 int frames, int *compression, int send_to_cam) in set_video_mode_Nala() argument
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()
234 pChoose = &Timon_table[size][fps][*compression]; in set_video_mode_Timon()
237 (*compression)++; in set_video_mode_Timon()
238 } while (*compression <= 3); in set_video_mode_Timon()
268 int frames, int *compression, int send_to_cam) in set_video_mode_Kiara() argument
273 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Kiara()
285 pChoose = &Kiara_table[size][fps][*compression]; in set_video_mode_Kiara()
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| /Linux-v5.15/arch/powerpc/boot/ |
| D | wrapper | 45 compression=.gz
143 compression=.gz
151 compression=".$1"
154 if [ $compression = ".none" ]; then
155 compression=
165 compression=
281 compression=
312 compression=
383 if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then
385 case $compression in
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| /Linux-v5.15/fs/squashfs/ |
| D | Kconfig | 8 filesystem for Linux. It uses zlib, lzo or xz compression to
65 If in doubt, select "Single threaded compression"
68 bool "Single threaded compression"
117 ZLIB compression is the standard compression used by Squashfs
118 file systems. It offers a good trade-off between compression
130 compressed with LZ4 compression. LZ4 compression is mainly
134 LZ4 is not the standard compression used in Squashfs and so most
145 compressed with LZO compression. LZO compression is mainly
149 LZO is not the standard compression used in Squashfs and so most
160 compressed with XZ compression. XZ gives better compression than
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| /Linux-v5.15/fs/jffs2/ |
| 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
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| /Linux-v5.15/fs/pstore/ |
| D | Kconfig | 26 tristate "DEFLATE (ZLIB) compression"
31 This option enables DEFLATE (also known as ZLIB) compression
35 tristate "LZO compression"
39 This option enables LZO compression algorithm support.
42 tristate "LZ4 compression"
46 This option enables LZ4 compression algorithm support.
49 tristate "LZ4HC compression"
53 This option enables LZ4HC (high compression) mode algorithm.
56 bool "842 compression"
60 This option enables 842 compression algorithm support.
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| /Linux-v5.15/drivers/crypto/qat/ |
| D | Kconfig | 23 for accelerating crypto and compression workloads.
34 for accelerating crypto and compression workloads.
45 for accelerating crypto and compression workloads.
56 for accelerating crypto and compression workloads.
69 Virtual Function for accelerating crypto and compression workloads.
81 Virtual Function for accelerating crypto and compression workloads.
93 Virtual Function for accelerating crypto and compression workloads.
|
| /Linux-v5.15/usr/ |
| 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
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
162 This algorithm's compression ratio is best but has a large dictionary
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| /Linux-v5.15/fs/f2fs/ |
| D | Kconfig | 95 bool "F2FS compression feature"
98 Enable filesystem-level compression on f2fs regular files,
99 multiple back-end compression algorithms are supported.
102 bool "LZO compression support"
109 bool "LZO-RLE compression support"
116 bool "LZ4 compression support"
123 bool "LZ4HC compression support"
131 bool "ZSTD compression support"
|
| /Linux-v5.15/Documentation/staging/ |
| D | xz.rst | 2 XZ data compression in Linux
8 XZ is a general purpose data compression format with high compression
9 ratio and relatively fast decompression. The primary compression
11 compression ratio even further. E.g. Branch/Call/Jump (BCJ) filters
12 improve compression ratio of executable data.
21 For userspace, XZ Utils provide a zlib-like compression library
45 from XZ Utils. The wrapper sets compression options to values suitable
56 Notes on compression options
87 use a big dictionary: for maximum compression, the dictionary should
|
| /Linux-v5.15/drivers/net/ppp/ |
| 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)"
|
| /Linux-v5.15/Documentation/admin-guide/blockdev/ |
| 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).
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| /Linux-v5.15/arch/mips/generic/ |
| D | board-jaguar2.its.S | 9 compression = "none"; define
19 compression = "none"; define
|
| D | board-ocelot.its.S | 9 compression = "none"; define
20 compression = "none"; define
|
| /Linux-v5.15/fs/ubifs/ |
| D | Kconfig | 23 bool "Advanced compression options"
32 bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
39 bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
45 bool "ZSTD compression support" if UBIFS_FS_ADVANCED_COMPR
50 in compression ratio over LZO. Say 'Y' if unsure.
|
| /Linux-v5.15/Documentation/admin-guide/media/ |
| D | philips.rst | 95 compression (only useful with the plugin)
96 With this option you can control the compression factor that the camera
102 compression.
103 1 = low compression.
104 2 = medium compression.
105 3 = high compression.
107 High compression takes less bandwidth of course, but it could also
108 introduce some unwanted artefacts. The default is 2, medium compression.
110 compression.
112 The compression parameter does not apply to the 645 and 646 cameras
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| D | cpia2.rst | 36 - Some compression parameters are settable.
95 frame rate achieved by the camera. If the compression engine is able to
99 The compression engine starts out at maximum compression, and will
101 as the compression engine can keep up with the frame rate, after a short time
104 At low alternate settings, the compression engine may not be able to
|
| /Linux-v5.15/Documentation/vm/ |
| D | z3fold.rst | 9 It is a zbud derivative which allows for higher compression
22 compression ratio goes to around 2.7x while zbud's one is around 1.7x.
28 Keeping effective compression ratio close to zsmalloc's, z3fold doesn't
|
| /Linux-v5.15/fs/erofs/ |
| D | Kconfig | 15 It also provides fixed-sized output compression support,
17 compression ratios, which is more useful to achieve high
76 Enable fixed-sized output compression for EROFS.
78 If you don't want to enable compression feature, say N.
|
| /Linux-v5.15/drivers/crypto/nx/ |
| D | Kconfig | 21 Support for PowerPC Nest (NX) compression acceleration. This
35 Support for PowerPC Nest (NX) compression acceleration. This
46 Support for PowerPC Nest (NX) compression acceleration. This
|
| /Linux-v5.15/Documentation/filesystems/ |
| D | erofs.rst | 23 by using reduced metadata and transparent file compression, especially
53 - Support transparent data compression as an option:
54 LZ4 algorithm with the fixed-sized output compression for high performance.
163 1 fixed-sized output data compression (with non-compacted indexes);
165 3 fixed-sized output data compression (with compacted indexes, v5.3+);
228 Data compression
230 EROFS implements LZ4 fixed-sized output compression which generates fixed-sized
232 fixed-sized input solutions. Relatively higher compression ratios can be gotten
233 by using fixed-sized output compression since nowadays popular data compression
|
| /Linux-v5.15/drivers/gpu/drm/gud/ |
| D | gud_drv.c | 100 desc->version, le32_to_cpu(desc->flags), desc->compression, in gud_get_display_descriptor()
336 if (gdrm->compression & GUD_COMPRESSION_LZ4) in gud_stats_debugfs()
338 if (!gdrm->compression) in gud_stats_debugfs()
342 if (gdrm->compression) { in gud_stats_debugfs()
475 gdrm->compression = desc.compression & GUD_COMPRESSION_LZ4; in gud_probe()
477 if (gdrm->flags & GUD_DISPLAY_FLAG_FULL_UPDATE && gdrm->compression) in gud_probe()
577 if (gdrm->compression & GUD_COMPRESSION_LZ4) { in gud_probe()
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| D | gud_pipe.c | 154 u8 compression = gdrm->compression; in gud_prep_flush() local
176 if (compression) in gud_prep_flush()
199 } else if (compression && !import_attach && pitch == fb->pitches[0]) { in gud_prep_flush()
213 if (compression & GUD_COMPRESSION_LZ4) { in gud_prep_flush()
218 compression = 0; in gud_prep_flush()
222 req->compression = GUD_COMPRESSION_LZ4; in gud_prep_flush()
288 if (req.compression) in gud_flush_rect()
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| /Linux-v5.15/Documentation/networking/ |
| D | ipsec.rst | 29 Small IP datagrams are likely to expand as a result of compression.
30 Therefore, a numeric threshold should be applied before compression,
32 original form without attempting compression. The numeric threshold
|
| /Linux-v5.15/Documentation/userspace-api/media/v4l/ |
| D | ext-ctrls-fm-tx.rst | 11 parameters for audio compression, pilot tone generation, audio deviation
114 Enables or disables the audio compression feature. This feature
120 Sets the gain for audio compression feature. It is a dB value. The
124 Sets the threshold level for audio compression freature. It is a dB
128 Sets the attack time for audio compression feature. It is a useconds
132 Sets the release time for audio compression feature. It is a
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