| /linux-6.12.1/drivers/md/dm-vdo/ |
| D | packer.c | 263 .state = data_vio->compression.slot + VDO_MAPPING_STATE_COMPRESSED_BASE, in release_compressed_write_waiter()
287 for (client = agent->compression.next_in_batch; client != NULL; client = next) { in finish_compressed_write()
288 next = client->compression.next_in_batch; in finish_compressed_write()
309 for (client = agent->compression.next_in_batch; client != NULL; client = next) { in handle_compressed_write_error()
310 next = client->compression.next_in_batch; in handle_compressed_write_error()
327 data_vio->compression.bin = bin; in add_to_bin()
328 data_vio->compression.slot = bin->slots_used; in add_to_bin()
346 data_vio->compression.bin = NULL; in remove_from_bin()
390 static block_size_t __must_check pack_fragment(struct compression_state *compression, in pack_fragment() argument
395 struct compression_state *to_pack = &data_vio->compression; in pack_fragment()
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| D | Kconfig | 4 tristate "VDO: deduplication and compression target"
12 deduplication, compression and thin-provisioning.
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| /linux-6.12.1/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-6.12.1/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-6.12.1/arch/powerpc/boot/ |
| D | wrapper | 47 compression=.gz
145 compression=.gz
153 compression=".$1"
156 if [ $compression = ".none" ]; then
157 compression=
167 compression=
300 compression=
331 compression=
402 if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then
404 case $compression in
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| /linux-6.12.1/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-6.12.1/fs/squashfs/ |
| 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
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| /linux-6.12.1/drivers/block/zram/ |
| D | Kconfig | 9 itself. These disks allow very fast I/O and compression provides
18 bool "lz4 compression support"
24 bool "lz4hc compression support"
30 bool "zstd compression support"
36 bool "deflate compression support"
42 bool "842 compression support"
54 bool "lzo and lzo-rle compression support" if !ZRAM_BACKEND_FORCE_LZO
140 bool "Enable multiple compression streams"
143 This will enable multi-compression streams, so that ZRAM can
145 compression algorithm. Note, that IDLE page recompression
|
| /linux-6.12.1/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"
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| /linux-6.12.1/Documentation/userspace-api/media/drivers/ |
| D | aspeed-video.rst | 9 video compressions with a wide range of video quality and compression ratio
14 * JPEG JFIF standard mode: for single frame and management compression
15 * ASPEED proprietary mode: for multi-frame and differential compression.
16 Support 2-pass (high quality) video compression scheme (Patent pending by
17 ASPEED). Provide visually lossless video compression quality or to reduce
48 that can be used to decide compression quality if High quality mode enabled
|
| /linux-6.12.1/drivers/crypto/intel/qat/ |
| 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.
68 for accelerating crypto and compression workloads.
81 Virtual Function for accelerating crypto and compression workloads.
93 Virtual Function for accelerating crypto and compression workloads.
105 Virtual Function for accelerating crypto and compression workloads.
|
| /linux-6.12.1/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-6.12.1/fs/f2fs/ |
| 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"
|
| /linux-6.12.1/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-6.12.1/Documentation/staging/ |
| D | xz.rst | 4 XZ data compression in Linux
10 XZ is a general purpose data compression format with high compression
19 For userspace, `XZ Utils`_ provide a zlib-like compression library
50 Notes on compression options
81 For the best compression, the dictionary should be at least
85 The compression presets in XZ Utils may not be optimal when creating
|
| /linux-6.12.1/drivers/net/ethernet/asix/ |
| D | Kconfig | 23 bool "SPI transfer compression"
27 Say Y here to enable SPI transfer compression. It saves up
31 changed at run time via spi-compression ethtool tunable.
|
| /linux-6.12.1/fs/bcachefs/ |
| D | compress.c | 299 struct bch_compression_opt compression) in attempt_compress() argument
302 __bch2_compression_opt_to_type[compression.type]; in attempt_compress()
306 if (compression.level < LZ4HC_MIN_CLEVEL) { in attempt_compress()
320 compression.level, in attempt_compress()
335 compression.level in attempt_compress()
336 ? clamp_t(unsigned, compression.level, in attempt_compress()
355 unsigned level = min((compression.level * 3) / 2, zstd_max_clevel()); in attempt_compress()
388 struct bch_compression_opt compression) in __bio_compress() argument
393 __bch2_compression_opt_to_type[compression.type]; in __bio_compress()
425 compression); in __bio_compress()
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| /linux-6.12.1/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-6.12.1/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-6.12.1/Documentation/ABI/testing/ |
| D | sysfs-block-zram | 30 number of backend's zcomp_strm compression streams (number of
38 available and selected compression algorithms, change
39 compression algorithm selection.
146 or show secondary compression algorithms.
152 The recompress file is write-only and triggers re-compression
153 with secondary compression algorithms.
160 compression algorithm parameters.
|
| /linux-6.12.1/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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|
| /linux-6.12.1/Documentation/mm/ |
| D | z3fold.rst | 7 It is a zbud derivative which allows for higher compression
20 compression ratio goes to around 2.7x while zbud's one is around 1.7x.
26 Keeping effective compression ratio close to zsmalloc's, z3fold doesn't
|
| /linux-6.12.1/fs/erofs/ |
| D | Kconfig | 16 It also provides fixed-sized output compression support in order to
17 improve storage density as well as keep relatively higher compression
100 Enable fixed-sized output compression for EROFS.
102 If you don't want to enable compression feature, say N.
112 gives better compression ratios than the default LZ4 format, at the
123 containing DEFLATE compressed data. It gives better compression
138 containing Zstandard compressed data. It gives better compression
|
| /linux-6.12.1/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
|