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/linux-4.1.27/net/6lowpan/
DKconfig13 Support for next header compression.
21 6LoWPAN IPv6 Destination Options Header compression according to
28 6LoWPAN IPv6 Fragment Header compression according to RFC6282.
34 6LoWPAN IPv6 Hop-by-Hop Options Header compression according to
41 6LoWPAN IPv6 Header compression according to RFC6282.
47 6LoWPAN IPv6 Mobility Header compression according to RFC6282.
53 6LoWPAN IPv6 Routing Header compression according to RFC6282.
59 6LoWPAN IPv6 UDP Header compression according to RFC6282.
/linux-4.1.27/drivers/media/usb/pwc/
Dpwc-ctrl.c154 int frames, int *compression, int send_to_cam) in set_video_mode_Nala() argument
222 *compression = 3; in set_video_mode_Nala()
229 int frames, int *compression, int send_to_cam) in set_video_mode_Timon() argument
234 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Timon()
246 while (*compression <= 3) { in set_video_mode_Timon()
247 pChoose = &Timon_table[size][fps][*compression]; in set_video_mode_Timon()
250 (*compression)++; in set_video_mode_Timon()
280 int frames, int *compression, int send_to_cam) in set_video_mode_Kiara() argument
285 if (size >= PSZ_MAX || *compression < 0 || *compression > 3) in set_video_mode_Kiara()
296 while (*compression <= 3) { in set_video_mode_Kiara()
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Dphilips.txt89 compression (only useful with the plugin)
90 With this option you can control the compression factor that the camera
95 compression.
96 1 = low compression.
97 2 = medium compression.
98 3 = high compression.
100 High compression takes less bandwidth of course, but it could also
101 introduce some unwanted artefacts. The default is 2, medium compression.
103 compression.
105 The compression parameter does not apply to the 645 and 646 cameras
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Dpwc-if.c364 int compression = 0; /* 0..3 = uncompressed..high */ in pwc_isoc_init() local
377 pdev->vframes, &compression, 1); in pwc_isoc_init()
403 if (ret == -ENOSPC && compression < 3) { in pwc_isoc_init()
404 compression++; in pwc_isoc_init()
448 if (ret == -ENOSPC && compression < 3) { in pwc_isoc_init()
449 compression++; in pwc_isoc_init()
730 int compression = 0; in usb_pwc_probe() local
1052 V4L2_PIX_FMT_YUV420, 30, &compression, 1); in usb_pwc_probe()
Dpwc-v4l.c465 int ret, pixelformat, compression = 0; in pwc_s_fmt_vid_cap() local
485 pixelformat, 30, &compression, 0); in pwc_s_fmt_vid_cap()
1003 int compression = 0; in pwc_s_parm() local
1023 fps, &compression, 0); in pwc_s_parm()
Dpwc.h367 int pixfmt, int frames, int *compression, int send_to_cam);
/linux-4.1.27/Documentation/blockdev/
Dzram.txt8 in memory itself. These disks allow very fast I/O and compression provides
24 2) Set max number of compression streams
25 Compression backend may use up to max_comp_streams compression streams,
26 thus allowing up to max_comp_streams concurrent compression operations.
27 By default, compression backend uses single compression stream.
30 #show max compression streams number
33 #set max compression streams number to 3
37 In order to enable compression backend's multi stream support max_comp_streams
39 initialisation. Once the device initialised as a single stream compression
41 the value of max_comp_streams because single stream compression backend
[all …]
Dramdisk.txt122 area (esp. for disks) so that maximal compression is achieved for
134 d) Compress the contents of the RAM disk. The level of compression
/linux-4.1.27/fs/jffs2/
DKconfig8 levelling, compression and support for hard links. You cannot use
104 bool "Advanced compression options for JFFS2"
109 compression modules, if any, are enabled in JFFS2. Removing
117 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
124 lossless data-compression library for use on virtually any computer
131 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
137 minilzo-based compression. Generally works better than Zlib.
143 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
150 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
157 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
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DTODO8 - disable compression in commit_write()?
10 - chattr support - turning on/off and tuning compression per-inode
/linux-4.1.27/fs/squashfs/
DKconfig7 filesystem for Linux. It uses zlib, lzo or xz compression to
64 If in doubt, select "Single threaded compression"
67 bool "Single threaded compression"
116 ZLIB compression is the standard compression used by Squashfs
117 file systems. It offers a good trade-off between compression
129 compressed with LZ4 compression. LZ4 compression is mainly
133 LZ4 is not the standard compression used in Squashfs and so most
144 compressed with LZO compression. LZO compression is mainly
148 LZO is not the standard compression used in Squashfs and so most
159 compressed with XZ compression. XZ gives better compression than
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Dsquashfs_fs.h251 __le16 compression; member
Dsuper.c136 le16_to_cpu(sblk->compression)); in squashfs_fill_super()
/linux-4.1.27/Documentation/
Dxz.txt2 XZ data compression in Linux
7 XZ is a general purpose data compression format with high compression
8 ratio and relatively fast decompression. The primary compression
10 compression ratio even further. E.g. Branch/Call/Jump (BCJ) filters
11 improve compression ratio of executable data.
20 For userspace, XZ Utils provide a zlib-like compression library
43 from XZ Utils. The wrapper sets compression options to values suitable
54 Notes on compression options
84 use a big dictionary: for maximum compression, the dictionary should
Dlzo.txt40 rate of at most 255 per extra byte (thus the compression ratio cannot exceed
Ddevices.txt670 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
671 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
672 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
673 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
674 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
675 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
676 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
677 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
2651 0 = /dev/mvideo/status0 Video compression status
D00-INDEX485 - how to make use of the XZ data compression within linux kernel
DSubmittingPatches333 6) No MIME, no links, no compression, no attachments. Just plain text.
/linux-4.1.27/drivers/net/ppp/
DKconfig38 tristate "PPP BSD-Compress compression"
41 Support for the BSD-Compress compression method for PPP, which uses
42 the LZW compression method to compress each PPP packet before it is
44 (usually your ISP) has to support the BSD-Compress compression
48 The PPP Deflate compression method ("PPP Deflate compression",
52 Note that the BSD compression code will always be compiled as a
57 tristate "PPP Deflate compression"
62 Support for the Deflate compression method for PPP, which uses the
66 Deflate compression method as well for this to be useful. Even if
85 tristate "PPP MPPE compression (encryption)"
/linux-4.1.27/fs/ubifs/
DKconfig15 bool "Advanced compression options"
25 bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
33 bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
/linux-4.1.27/drivers/isdn/i4l/
DKconfig23 bool "Use VJ-compression with synchronous PPP"
26 This enables Van Jacobson header compression for synchronous PPP.
49 tristate "Support BSD compression"
52 Support for the BSD-Compress compression method for PPP, which uses
53 the LZW compression method to compress each PPP packet before it is
55 (usually your ISP) has to support the BSD-Compress compression
Disdn_tty.c1686 f->compression = 0; in isdn_tty_modem_reset_faxpar()
/linux-4.1.27/Documentation/networking/
Dipsec.txt21 Small IP datagrams are likely to expand as a result of compression.
22 Therefore, a numeric threshold should be applied before compression,
24 original form without attempting compression. The numeric threshold
Dfib_trie.txt69 level compression algorithm on part of the trie.
72 Looks up a key, deletes it and runs the level compression algorithm.
78 to implement level compression.
83 level compression. This part follows the original paper pretty closely
Dppp_generic.txt16 * packet compression and decompression
17 * TCP/IP header compression and decompression
160 then subjected to TCP/IP header compression and packet compression
161 (Deflate or BSD-Compress compression), as appropriate. After this
271 unit) will be subject to bundle-level compression and to fragmentation
331 SC_COMP_TCP enable transmit TCP header compression
332 SC_NO_TCP_CCID disable connection-id compression for
333 TCP header compression
359 * PPPIOCSCOMPRESS sets the parameters for packet compression or
363 containing a CCP option specifying a compression method and its
Dieee802154.txt136 compression for IPv6 datagrams (LOWPAN_HC1 and LOWPAN_HC2) to reduce the
140 It deprecates HC1 and HC2 compression and defines IPHC encoding format which is
/linux-4.1.27/Documentation/video4linux/
DREADME.cpia225 - Some compression parameters are settable.
78 frame rate achieved by the camera. If the compression engine is able to
81 The compression engine starts out at maximum compression, and will
83 as the compression engine can keep up with the frame rate, after a short time
85 At low alternate settings, the compression engine may not be able to
D4CCs.txt6 the pixel format, compression and colour space. The interpretation of the
DZoran370 The zr36060 can do 1:2 JPEG compression. This is really the theoretical
371 maximum that the chipset can reach. The driver can, however, limit compression
373 can't handle 1:2 compression without stopping capture after only a few minutes.
375 1:4 max. compression mode.
377 100% JPEG quality is thus 1:2 compression in practice. So for a full PAL frame
382 1:2 compression. For 1:4 compression, you'd have frames of half this size.
402 1024 bits per block. 100% in the new driver mean 1:2 compression; the maximum
445 module to do 1:4 instead of 1:2 compression, etc.
Dcpia2_overview.txt29 compressed as Motion JPEG (JPEGA). The VC controls all of the compression
Dsi4713.txt97 * The si4713 device is capable of applying audio compression to the transmitted signal.
/linux-4.1.27/drivers/block/zram/
DKconfig10 itself. These disks allow very fast I/O and compression provides
25 This option enables LZ4 compression algorithm support. Compression
/linux-4.1.27/net/ieee802154/6lowpan/
DKconfig5 IPv6 compression over IEEE 802.15.4.
/linux-4.1.27/Documentation/filesystems/
Dsquashfs.txt5 It uses zlib, lz4, lzo, or xz compression to compress files, inodes and
31 Metadata compression: yes no
70 | compression |
102 Compressors can optionally support compression specific options (e.g.
103 dictionary size). If non-default compression options have been used, then
120 To maximise compression there are different inodes for each file type
124 To further maximise compression, two types of regular file inode and
250 are packed together into blocks (to gain greater compression) the read of a
Dbtrfs.txt85 Control BTRFS file data compression. Type may be specified as "zlib"
86 "lzo" or "no" (for no compression, used for remounting). If no type
89 If compression is enabled, nodatacow and nodatasum are disabled.
160 Nodatacow implies nodatasum, and disables all compression.
Dlogfs.txt130 arithmetic simple and uses compression to save space.
138 accordingly. New inodes will inherit the compression flag of the
145 not consume any extra space, so the compression gains are lost space
233 With compression, the block device (or mapping inode) cannot be used
Dext2.txt71 compression though these are not yet implemented (some are available as
165 undeletable, compression, synchronous updates, immutability, append-only,
267 doesn't understand compression, you would just get garbage back from
Dubifs.txt56 Similarly to JFFS2, UBIFS supports on-the-flight compression which makes
/linux-4.1.27/Documentation/ABI/testing/
Dsysfs-block-zram65 number of backend's zcomp_strm compression streams (number of
73 available and selected compression algorithms, change
74 compression algorithm selection.
111 size of data stored in this disk. So, compression ratio can be
Dsysfs-class-net-statistics33 that support packet compression (e.g: PPP).
146 compression (e.g: PPP).
Dsysfs-driver-genwqe11 for compression/decompression.
/linux-4.1.27/drivers/crypto/qat/
DKconfig20 for accelerating crypto and compression workloads.
/linux-4.1.27/Documentation/isdn/
DREADME.syncppp14 module before the isdn.o module, if VJ-compression support
42 You must disable BSD-compression, this implementation can't
DREADME.sc226 xii) take out (minus) VJ compression and bsd compression
259 xiii) take out (minus) bsd compression
DINTERFACE.fax40 - compression
/linux-4.1.27/drivers/media/pci/solo6x10/
DKconfig14 compression capture cards and other Softlogic-based ones.
/linux-4.1.27/drivers/crypto/nx/
DKconfig24 Support for Power7+ in-Nest compression acceleration. This
/linux-4.1.27/fs/btrfs/
DMakefile10 compression.o delayed-ref.o relocation.o delayed-inode.o scrub.o \
Dfile-item.c45 u8 compression, u8 encryption, u16 other_encoding) in btrfs_insert_file_extent() argument
76 btrfs_set_file_extent_compression(leaf, item, compression); in btrfs_insert_file_extent()
Dctree.h895 u8 compression; member
3125 struct btrfs_file_extent_item, compression, 8);
3151 compression, 8);
3830 u8 compression, u8 encryption, u16 other_encoding);
Dsend.c1451 u8 compression; in read_symlink() local
1484 compression = btrfs_file_extent_compression(path->nodes[0], ei); in read_symlink()
1486 BUG_ON(compression); in read_symlink()
Dinode.c2055 u8 compression, u8 encryption, in insert_reserved_file_extent() argument
2106 btrfs_set_file_extent_compression(leaf, fi, compression); in insert_reserved_file_extent()
/linux-4.1.27/lib/xz/
DKconfig5 LZMA2 compression algorithm and BCJ filters are supported using
/linux-4.1.27/drivers/net/slip/
DKconfig39 This option enables Van Jacobsen serial line header compression
49 This protocol is faster than SLIP because it uses compression on the
/linux-4.1.27/sound/ppc/
DKconfig29 range compression) on Tumbler/Snapper.
/linux-4.1.27/tools/perf/Documentation/
Dexamples.txt71 Delta compression using up to 2 threads.
125 Delta compression using up to 2 threads.
/linux-4.1.27/drivers/media/usb/gspca/
Dxirlink_cit.c1488 const unsigned short compression = 0; /* 0=none, 7=best frame rate */ in cit_start_model0() local
1534 cit_write_reg(gspca_dev, compression, 0x0109); in cit_start_model0()
1936 const unsigned short compression = 0; /* 0=none, 7=best frame rate */ in cit_start_model3() local
2047 cit_write_reg(gspca_dev, compression, 0x0109); in cit_start_model3()
2063 cit_write_reg(gspca_dev, compression, 0x0109); in cit_start_model3()
2091 cit_write_reg(gspca_dev, compression, 0x0109); in cit_start_model3()
2501 const unsigned short compression = 0; /* 0=none, 7=best frame rate */ in cit_start_ibm_netcam_pro() local
2576 cit_write_reg(gspca_dev, compression, 0x0109); in cit_start_ibm_netcam_pro()
Dcpia1.c321 } compression; member
689 params->compression.mode = CPIA_COMPRESSION_AUTO; in reset_camera_params()
690 params->compression.decimation = NO_DECIMATION; in reset_camera_params()
944 sd->params.compression.mode, in command_setcompression()
945 sd->params.compression.decimation, 0, 0); in command_setcompression()
/linux-4.1.27/include/linux/
Disdnif.h249 __u8 compression; member
/linux-4.1.27/drivers/media/usb/cpia2/
Dcpia2_v4l.c424 cam->params.compression.inhibit_htables = 0; in cpia2_s_fmt_vid_cap()
672 cam->params.compression.inhibit_htables = in cpia2_s_ctrl()
705 if(!cam->params.compression.inhibit_htables) { in cpia2_g_jpegcomp()
745 cam->params.compression.inhibit_htables = in cpia2_s_jpegcomp()
Dcpia2.h296 } compression; member
Dcpia2_core.c789 if (cam->params.compression.inhibit_htables) { in cpia2_reset_camera()
2117 cam->params.compression.jpeg_options = CPIA2_VC_VC_JPEG_OPT_DEFAULT; in reset_camera_struct()
2118 cam->params.compression.creep_period = 2; in reset_camera_struct()
2119 cam->params.compression.user_squeeze = 20; in reset_camera_struct()
2120 cam->params.compression.inhibit_htables = false; in reset_camera_struct()
/linux-4.1.27/Documentation/scsi/
Dst.txt339 control of compression. Some drives (like the Exabytes) use
340 density codes for compression control. Some drives use another
342 driver. Some drives without compression capability will accept
343 any compression mode without error.
419 The compression default will not be used if the value of
423 used as the compression algorithm. The value
424 MT_ST_CLEAR_DEFAULT can be used to clear the compression
Dosst.txt110 On a fast machine, you may profit from software data compression (z flag for
/linux-4.1.27/fs/cramfs/
DREADME138 value don't get as good compression as they can.
151 The main advantage of option 3 over 1, 2, is better compression. The
/linux-4.1.27/net/bluetooth/
DKconfig65 IPv6 compression over Bluetooth Low Energy.
/linux-4.1.27/Documentation/fb/
Dudlfb.txt7 DisplayLink chips provide simple hline/blit operations with some compression,
147 hardware. Includes compression and protocol overhead
/linux-4.1.27/init/
DKconfig119 prompt "Kernel compression mode"
124 Several compression algorithms are available, which differ
125 in efficiency, compression and decompression speed.
134 High compression options are mostly useful for users, who
144 The old and tried gzip compression. It provides a good balance
145 between compression ratio and decompression speed.
151 Its compression ratio and speed is intermediate.
161 This compression algorithm's ratio is best. Decompression speed
170 BCJ filters which can improve compression ratio of executable
184 Its compression ratio is the poorest among the choices. The kernel
[all …]
/linux-4.1.27/Documentation/vm/
Dzswap.txt34 Zswap receives pages for compression through the Frontswap API and is able to
Dfrontswap.txt72 and size (such as with compression) or secretly moved (as might be
86 cycles used in compression/decompression for better memory utilization.
223 Similarly, a KVM guest-side implementation could do in-guest compression
Dcleancache.txt112 as with compression) or secretly moved (as might be useful for write-
177 do fancy things on-the-fly like page compression and
/linux-4.1.27/crypto/
DKconfig1386 tristate "Deflate compression algorithm"
1397 tristate "Zlib compression algorithm"
1406 tristate "LZO compression algorithm"
1414 tristate "842 compression algorithm"
1423 tristate "LZ4 compression algorithm"
1431 tristate "LZ4HC compression algorithm"
1436 This is the LZ4 high compression mode algorithm.
/linux-4.1.27/include/pcmcia/
Dcistpl.h256 u_char compression; member
/linux-4.1.27/Documentation/ABI/obsolete/
Dsysfs-block-zram79 size of data stored in this disk. So, compression ratio can be
/linux-4.1.27/fs/btrfs/tests/
Dinode-tests.c28 u64 disk_len, u32 type, u8 compression, int slot) in insert_extent() argument
57 btrfs_set_file_extent_compression(leaf, fi, compression); in insert_extent()
/linux-4.1.27/Documentation/power/
Dswsusp.txt88 parameter, it saves hibernation image without compression.
155 allows for arbitrary transformations on the image (compression,
429 supports LZF compression to speed it up further.
/linux-4.1.27/scripts/
Dspelling.txt240 compresion||compression
241 comression||compression
/linux-4.1.27/lib/
DKconfig213 # compression support is select'ed if needed
/linux-4.1.27/Documentation/sound/alsa/
Dcompress_offload.txt51 likely that as audio compression technology advances, new formats
/linux-4.1.27/Documentation/powerpc/
Dcxl.txt49 The AFU is the core part of the accelerator (eg. the compression,
/linux-4.1.27/sound/isa/
DKconfig389 coprocessor can do variable tasks like various compression and
/linux-4.1.27/arch/cris/arch-v10/kernel/
Dhead.S195 ;; and when run with compression, the kernel is actually unpacked to
/linux-4.1.27/drivers/scsi/esas2r/
Desas2r.h391 u16 compression; member
/linux-4.1.27/drivers/media/usb/usbvision/
Dusbvision-video.c271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
/linux-4.1.27/drivers/media/i2c/
DKconfig678 comment "Audio/Video compression chips"
/linux-4.1.27/Documentation/x86/
Dboot.txt667 numbers. The currently supported compression formats are gzip
/linux-4.1.27/Documentation/kbuild/
Dmakefiles.txt1132 Compress target. Use maximum compression to compress target.
/linux-4.1.27/
DMAINTAINERS4884 IBM Power 842 compression accelerator