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/Linux-v5.4/Documentation/filesystems/
Daffs.txt14 a bug has been fixed so that accented ("international") letters
15 in file names are case-insensitive, as they ought to be.
79 symbolic links on an AFFS partition. Default = "/".
82 volume=name When symbolic links with an absolute path are created
90 Amiga -> Linux:
94 - R maps to r for user, group and others. On directories, R implies x.
96 - If both W and D are allowed, w will be set.
98 - E maps to x.
100 - H and P are always retained and ignored under Linux.
102 - A is always reset when a file is written to.
[all …]
Docfs2-online-filecheck.txt2 -----------------------
8 OCFS2 is often used in high-availability systems. However, OCFS2 usually
9 converts the filesystem to read-only when encounters an error. This may not be
10 necessary, since turning the filesystem read-only would affect other running
13 -EIO errno to the calling process and terminate further processing so that the
15 read-only, and the problematic file's inode number is reported in the kernel
20 This effort is to check/fix small issues which may hinder day-to-day operations
21 of a cluster filesystem by turning the filesystem read-only. The scope of
25 In case of directory to file links is incorrect, the directory inode is
50 fixed. Currently, three operations are supported, which includes checking
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Dqnx6.txt24 ------
26 The space in the device or file is split up into blocks. These are a fixed
33 ---------------
58 Unused block pointers are always set to ~0 - regardless of root node,
70 0x1000 is the size reserved for each superblock - regardless of the
74 ------
94 -----------
110 -------------
112 Symbolic links are also filesystem objects with inodes. They got a specific
116 Hard links got an inode, a directory entry, but a specific mode bit set,
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/Linux-v5.4/fs/affs/
DChanges7 -----------
9 - Doesn't work on the alpha. The only 64/32-bit
14 Alas, I've got no alpha to debug. :-(
16 - The partition checker (drivers/block/genhd.c)
20 - The feature to automatically make the fs clean
24 - When a file is truncated to a size that is not
29 Please direct bug reports to: zippel@linux-m68k.org
32 ------------
33 - kill kernel lock
34 - fix for a possible bitmap corruption
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/Linux-v5.4/Documentation/sound/soc/
Ddpcm.rst18 DPCM re-uses all the existing component codec, platform and DAI drivers without
23 -------------------------------------
26 document for all examples :-
32 PCM0 <------------> * * <----DAI0-----> Codec Headset
34 PCM1 <------------> * * <----DAI1-----> Codec Speakers
36 PCM2 <------------> * * <----DAI2-----> MODEM
38 PCM3 <------------> * * <----DAI3-----> BT
40 * * <----DAI4-----> DMIC
42 * * <----DAI5-----> FM
53 Example - DPCM Switching playback from DAI0 to DAI1
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/Linux-v5.4/Documentation/networking/
Dsfp-phylink.rst1 .. SPDX-License-Identifier: GPL-2.0
10 phylink is a mechanism to support hot-pluggable networking modules
11 directly connected to a MAC without needing to re-initialise the
12 adapter on hot-plug events.
14 phylink supports conventional phylib-based setups, fixed link setups
30 2. Fixed mode
32 Fixed mode is the same as PHY mode as far as the MAC driver is
35 3. In-band mode
37 In-band mode is used with 802.3z, SGMII and similar interface modes,
38 and we are expecting to use and honor the in-band negotiation or
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Dkapi.rst9 ---------------------
11 .. kernel-doc:: include/linux/net.h
15 -----------------------
17 .. kernel-doc:: include/linux/skbuff.h
20 .. kernel-doc:: include/net/sock.h
23 .. kernel-doc:: net/socket.c
26 .. kernel-doc:: net/core/skbuff.c
29 .. kernel-doc:: net/core/sock.c
32 .. kernel-doc:: net/core/datagram.c
35 .. kernel-doc:: net/core/stream.c
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/Linux-v5.4/Documentation/admin-guide/
Dsysfs-rules.rst4 The kernel-exported sysfs exports internal kernel implementation details
11 low-level userspace applications, with a new kernel release, the users
12 of sysfs must follow some rules to use an as-abstract-as-possible way to
21 - Do not use libsysfs
23 offer any abstraction, it exposes all the kernel driver-core
31 - sysfs is always at ``/sys``
38 - devices are only "devices"
39 There is no such thing like class-, bus-, physical devices,
41 just simply a "device". Class-, bus-, physical, ... types are just
47 - devpath (``/devices/pci0000:00/0000:00:1d.1/usb2/2-2/2-2:1.0``)
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/Linux-v5.4/drivers/net/wireless/ti/wlcore/
Dwlcore_i.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
6 * Copyright (C) 2008-2009 Nokia Corporation
53 * max number of links allowed by all HWs.
54 * this is NOT the actual max links supported by the current hw.
68 * When in AP-mode, we allow (at least) this number of packets
69 * to be transmitted to FW for a STA in PS-mode. Only when packets are
135 /* Cumulative counter of total released mem blocks since FW-reset */
150 * (length of the array is wl->num_links)
185 size_t len, bool fixed);
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/Linux-v5.4/include/uapi/linux/
Dio_uring.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
35 __u16 buf_index; /* index into fixed buffers, if used */
41 * sqe->flags
43 #define IOSQE_FIXED_FILE (1U << 0) /* use fixed fileset */
45 #define IOSQE_IO_LINK (1U << 2) /* links next sqe */
68 * sqe->fsync_flags
76 __u64 user_data; /* sqe->data submission passed back */
104 * sq_ring->flags
140 * io_uring_params->features flags
/Linux-v5.4/Documentation/devicetree/bindings/net/
Dethernet-controller.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/net/ethernet-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - David S. Miller <davem@davemloft.net>
16 local-mac-address:
18 - $ref: /schemas/types.yaml#definitions/uint8-array
19 - items:
20 - minItems: 6
25 mac-address:
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/Linux-v5.4/drivers/net/phy/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
20 loadable module or built-in.
31 third revision of the ASPEED MDIO register interface - the first two
105 tristate "MMIO device-controlled MDIO bus multiplexers"
110 are controlled via a simple memory-mapped device, like an FPGA.
133 tristate "GPIO lib-based bitbanged MDIO buses"
136 ---help---
137 Supports GPIO lib-based MDIO busses.
140 will be called mdio-gpio.
202 tristate "APM X-Gene SoC MDIO bus controller"
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Dphylink.c1 // SPDX-License-Identifier: GPL-2.0
4 * technologies such as SFP cages where the PHY is hot-pluggable.
38 * struct phylink - internal data type for phylink
52 u8 link_port; /* The current non-phy ethtool port */
78 if ((pl)->config->type == PHYLINK_NETDEV) \
79 netdev_printk(level, (pl)->netdev, fmt, ##__VA_ARGS__); \
80 else if ((pl)->config->type == PHYLINK_DEV) \
81 dev_printk(level, (pl)->dev, fmt, ##__VA_ARGS__); \
93 if ((pl)->config->type == PHYLINK_NETDEV) \
94 netdev_dbg((pl)->netdev, fmt, ##__VA_ARGS__); \
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/Linux-v5.4/Documentation/media/v4l-drivers/
Dimx.rst1 .. SPDX-License-Identifier: GPL-2.0
7 ------------
15 - Image DMA Controller (IDMAC)
16 - Camera Serial Interface (CSI)
17 - Image Converter (IC)
18 - Sensor Multi-FIFO Controller (SMFC)
19 - Image Rotator (IRT)
20 - Video De-Interlacing or Combining Block (VDIC)
26 re-ordering (for example UYVY to YUYV) within the same colorspace, and
27 packed <--> planar conversion. The IDMAC can also perform a simple
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/Linux-v5.4/Documentation/filesystems/ext4/
Dinodes.rst1 .. SPDX-License-Identifier: GPL-2.0
4 -----------
15 links and is in general more seek-happy than ext4 due to its simpler
22 ``(inode_number - 1) / sb.s_inodes_per_group``, and the offset into the
23 group's table is ``(inode_number - 1) % sb.s_inodes_per_group``. There
31 .. list-table::
33 :header-rows: 1
36 * - Offset
37 - Size
38 - Name
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/Linux-v5.4/tools/memory-model/Documentation/
Dexplanation.txt1 Explanation of the Linux-Kernel Memory Consistency Model
15 7. THE PROGRAM ORDER RELATION: po AND po-loc
18 10. THE READS-FROM RELATION: rf, rfi, and rfe
20 12. THE FROM-READS RELATION: fr, fri, and fre
22 14. PROPAGATION ORDER RELATION: cumul-fence
28 20. THE HAPPENS-BEFORE RELATION: hb
29 21. THE PROPAGATES-BEFORE RELATION: pb
30 22. RCU RELATIONS: rcu-link, rcu-gp, rcu-rscsi, rcu-fence, and rb
37 ------------
39 The Linux-kernel memory consistency model (LKMM) is rather complex and
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/Linux-v5.4/Documentation/devicetree/
Dwriting-schema.rst3 Writing DeviceTree Bindings in json-schema
6 Devicetree bindings are written using json-schema vocabulary. Schema files are
12 ---------------
14 Each schema doc is a structured json-schema which is defined by a set of
15 top-level properties. Generally, there is one binding defined per file. The
16 top-level json-schema properties used are:
19 A json-schema unique identifier string. The string must be a valid
29 Indicates the meta-schema the schema file adheres to.
39 Optional. A multi-line text block containing any detailed
41 or device does, standards the device conforms to, and links to datasheets for
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/Linux-v5.4/drivers/media/platform/vsp1/
Dvsp1_entity.c1 // SPDX-License-Identifier: GPL-2.0+
3 * vsp1_entity.c -- R-Car VSP1 Base Entity
5 * Copyright (C) 2013-2014 Renesas Electronics Corporation
13 #include <media/media-entity.h>
14 #include <media/v4l2-ctrls.h>
15 #include <media/v4l2-subdev.h>
30 if (entity->type == VSP1_ENTITY_HGO) { in vsp1_entity_route_setup()
37 source = entity->sources[0]; in vsp1_entity_route_setup()
38 smppt = (pipe->output->entity.index << VI6_DPR_SMPPT_TGW_SHIFT) in vsp1_entity_route_setup()
39 | (source->route->output << VI6_DPR_SMPPT_PT_SHIFT); in vsp1_entity_route_setup()
[all …]
/Linux-v5.4/Documentation/media/uapi/v4l/
Dvidioc-subdev-enum-frame-size.rst4 .. Foundation, with no Invariant Sections, no Front-Cover Texts
5 .. and no Back-Cover Texts. A copy of the license is included at
6 .. Documentation/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
19 VIDIOC_SUBDEV_ENUM_FRAME_SIZE - Enumerate media bus frame sizes
33 File descriptor returned by :ref:`open() <func-open>`.
43 a sub-device on the given pad for the given media bus format. Supported
55 Sub-devices that only support discrete frame sizes (such as most
60 supported. For instance, a scaler that uses a fixed-point scaling ratio
64 sub-device for an exact supported frame size.
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/Linux-v5.4/fs/jffs2/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
9 levelling, compression and support for hard links. You cannot use
25 is unlikely to be useful - it enables extra debugging in certain
27 located and fixed, the detailed messages were relegated to level 2.
33 bool "JFFS2 write-buffering support"
37 This enables the write-buffering support in JFFS2.
41 - NAND flash
42 - NOR flash with transparent ECC
43 - DataFlash
46 bool "Verify JFFS2 write-buffer reads"
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/Linux-v5.4/Documentation/networking/device_drivers/dec/
Dde4x5.txt42 measurement. Their error is +/-20k on a quiet (private) network and also
59 2) for fixed autoprobes (not recommended), edit the source code near
73 3) compile de4x5.c, but include -DMODULE in the command line to ensure
105 The SMC9332 card has a non-compliant SROM which needs fixing - I have
107 to a previous DEC-STD format.
134 interrupt service code is fixed. YOU SHOULD SEPARATE OUT THE FAST
138 Finally, I think I have really fixed the module loading problem with
147 SROM, the feature is ignored unless lp->params.fdx is set at compile
150 duplex links except through autonegotiation. When I include the
156 and media. The only lexical constraints are: the board name (dev->name)
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/Linux-v5.4/Documentation/devicetree/bindings/display/msm/
Ddsi.txt5 - compatible:
6 * "qcom,mdss-dsi-ctrl"
7 - reg: Physical base address and length of the registers of controller
8 - reg-names: The names of register regions. The following regions are required:
10 - interrupts: The interrupt signal from the DSI block.
11 - power-domains: Should be <&mmcc MDSS_GDSC>.
12 - clocks: Phandles to device clocks.
13 - clock-names: the following clocks are required:
25 - assigned-clocks: Parents of "byte" and "pixel" for the given platform.
26 - assigned-clock-parents: The Byte clock and Pixel clock PLL outputs provided
[all …]
/Linux-v5.4/drivers/usb/gadget/function/
Du_ether.h1 // SPDX-License-Identifier: GPL-2.0+
3 * u_ether.h -- interface to USB gadget "ethernet link" utilities
5 * Copyright (C) 2003-2005,2008 David Brownell
6 * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
49 * layer facilities can be used to package multiple logical links on this
68 /* NCM requires fixed size bundles */
95 /* gether_setup - initialize one ethernet-over-usb link
96 * @g: gadget to associated with these links
121 * gether_register_netdev - register the net device
124 * Registers the net device associated with this ethernet-over-usb link
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/Linux-v5.4/drivers/base/
Dcore.c1 // SPDX-License-Identifier: GPL-2.0
3 * drivers/base/core.c - core driver model code (device registration, etc)
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
7 * Copyright (c) 2006 Greg Kroah-Hartman <gregkh@suse.de>
47 /* Device links support. */
110 * device_is_dependent - Check if one device depends on another one
129 list_for_each_entry(link, &dev->links.consumers, s_node) { in device_is_dependent()
130 if (link->consumer == target) in device_is_dependent()
133 ret = device_is_dependent(link->consumer, target); in device_is_dependent()
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/Linux-v5.4/drivers/media/dvb-core/
Ddvbdev.c103 if (dvbdev && dvbdev->fops) { in dvb_device_open()
107 new_fops = fops_get(dvbdev->fops); in dvb_device_open()
110 file->private_data = dvbdev; in dvb_device_open()
112 if (file->f_op->open) in dvb_device_open()
113 err = file->f_op->open(inode, file); in dvb_device_open()
121 return -ENODEV; in dvb_device_open()
136 struct dvb_device *dvbdev = file->private_data; in dvb_generic_open()
139 return -ENODEV; in dvb_generic_open()
141 if (!dvbdev->users) in dvb_generic_open()
142 return -EBUSY; in dvb_generic_open()
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