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Searched refs:compression (Results 1 – 25 of 167) sorted by relevance

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/linux/net/6lowpan/
A DKconfig22 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.
80 6LoWPAN IPv6 UDP generic header compression according to RFC7400.
96 6LoWPAN IPv6 fragmentation option generic header compression
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/linux/drivers/media/usb/pwc/
A Dpwc-ctrl.c210 *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()
237 (*compression)++; in set_video_mode_Timon()
238 } while (*compression <= 3); in set_video_mode_Timon()
273 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Kiara()
288 (*compression)++; in set_video_mode_Kiara()
289 } while (*compression <= 3); in set_video_mode_Kiara()
331 compression, send_to_cam); in pwc_set_video_mode()
334 compression, send_to_cam); in pwc_set_video_mode()
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/linux/fs/squashfs/
A DKconfig8 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
145 compressed with LZO compression. LZO compression is mainly
160 compressed with XZ compression. XZ gives better compression than
161 the default zlib compression, at the expense of greater CPU and
175 compressed with ZSTD compression. ZSTD gives better compression than
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/linux/arch/powerpc/boot/
A Dwrapper47 compression=.gz
145 compression=.gz
153 compression=".$1"
157 compression=
167 compression=
283 compression=
314 compression=
387 case $compression in
402 compression=
408 mv -f "$vmz.$$$compression" "$vmz$compression"
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/linux/fs/jffs2/
A DKconfig9 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
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
158 You can set here the default compression mode of JFFS2 from
159 the available compression modes. Don't touch if unsure.
162 bool "no compression"
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/linux/fs/pstore/
A DKconfig26 tristate "DEFLATE (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"
56 bool "842 compression"
60 This option enables 842 compression algorithm support.
63 bool "zstd compression"
77 prompt "Default pstore compression algorithm"
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/linux/drivers/crypto/qat/
A DKconfig23 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/usr/
A DKconfig112 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
190 decompression speed is the second fastest and it's compression speed
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/linux/fs/f2fs/
A DKconfig95 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/Documentation/staging/
A Dxz.rst2 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/drivers/net/ppp/
A DKconfig39 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/Documentation/admin-guide/blockdev/
A Dzram.rst74 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
88 3) Select compression algorithm
94 there is no way to change compression algorithm).
98 #show supported compression algorithms
102 #select lzo compression algorithm
108 a new device with a compression algorithm that is not listed in
113 custom crypto compression modules (implementing S/W or H/W compression).
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/linux/drivers/net/ethernet/asix/
A DKconfig23 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/Documentation/admin-guide/media/
A Dphilips.rst95 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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A Dcpia2.rst36 - 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/fs/erofs/
A DKconfig16 It also provides fixed-sized output compression support in order to
17 improve storage density as well as keep relatively higher compression
82 Enable fixed-sized output compression for EROFS.
84 If you don't want to enable compression feature, say N.
94 gives better compression ratios than the LZ4 algorithm, at the
/linux/fs/ubifs/
A DKconfig23 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/arch/mips/generic/
A Dboard-jaguar2.its.S9 compression = "none"; define
19 compression = "none"; define
A Dboard-ocelot.its.S9 compression = "none"; define
20 compression = "none"; define
/linux/Documentation/vm/
A Dz3fold.rst9 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/drivers/gpu/drm/gud/
A Dgud_drv.c100 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()
583 if (gdrm->compression & GUD_COMPRESSION_LZ4) { in gud_probe()
A Dgud_pipe.c154 u8 compression = gdrm->compression; in gud_prep_flush() local
176 if (compression) in gud_prep_flush()
205 } else if (compression && !import_attach && pitch == fb->pitches[0]) { in gud_prep_flush()
219 if (compression & GUD_COMPRESSION_LZ4) { in gud_prep_flush()
224 compression = 0; in gud_prep_flush()
228 req->compression = GUD_COMPRESSION_LZ4; in gud_prep_flush()
294 if (req.compression) in gud_flush_rect()
/linux/drivers/crypto/nx/
A DKconfig21 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/Documentation/filesystems/
A Derofs.rst23 by using compact layout, transparent file compression and direct access,
54 - Support transparent data compression as an option:
55 LZ4 algorithm with the fixed-sized output compression for high performance;
167 1 fixed-sized output data compression (with non-compacted indexes);
169 3 fixed-sized output data compression (with compacted indexes, v5.3+);
232 Data compression
234 EROFS implements LZ4 fixed-sized output compression which generates fixed-sized
236 fixed-sized input solutions. Relatively higher compression ratios can be gotten
237 by using fixed-sized output compression since nowadays popular data compression
A Df2fs.rst298 compression on those corresponding files, e.g. if all files
300 on compression extension list and enable compression on
302 For other files, we can still enable compression via ioctl.
304 can be set to enable compression for all files.
306 compression on those corresponding files, just contrary to compression extension.
315 See more in compression sections.
321 the automaic compression and gives the user discretion of
323 compression/decompression on the compression enabled files using
861 - To enable compression on regular inode, there are four ways:
920 enable compression on a regular inode).
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