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/Documentation/devicetree/bindings/timestamp/
Dhte-consumer.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/timestamp/hte-consumer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dipen Patel <dipenp@nvidia.com>
16 $ref: /schemas/types.yaml#/definitions/phandle-array
23 timestamp-names:
24 $ref: /schemas/types.yaml#/definitions/string-array
27 timestamp property.
30 timestamp-names: [ timestamps ]
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/Documentation/devicetree/bindings/net/
Dti,k3-am654-cpts.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/ti,k3-am654-cpts.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Siddharth Vadapalli <s-vadapalli@ti.com>
11 - Roger Quadros <rogerq@kernel.org>
17 - selection of multiple external clock sources
18 - Software control of time sync events via interrupt or polling
19 - 64-bit timestamp mode in ns with PPM and nudge adjustment.
20 - hardware timestamp push inputs (HWx_TS_PUSH)
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Dti,icssg-prueth.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/ti,icssg-prueth.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Md Danish Anwar <danishanwar@ti.com>
13 Ethernet based on the Programmable Real-Time Unit and Industrial
19 - ti,am642-icssg-prueth # for AM64x SoC family
20 - ti,am654-icssg-prueth # for AM65x SoC family
21 - ti,am654-sr1-icssg-prueth # for AM65x SoC family, SR1.0
32 dma-names:
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Dsnps,dwmac.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexandre Torgue <alexandre.torgue@foss.st.com>
11 - Giuseppe Cavallaro <peppe.cavallaro@st.com>
12 - Jose Abreu <joabreu@synopsys.com>
23 - snps,dwmac
24 - snps,dwmac-3.40a
25 - snps,dwmac-3.50a
26 - snps,dwmac-3.610
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/Documentation/trace/
Dmmiotrace.rst2 In-kernel memory-mapped I/O tracing
11 Injection Test Harness. In Dec 2006 - Jan 2007, using the code from Intel,
15 Mmiotrace was built for reverse engineering any memory-mapped IO device with
19 Out-of-tree mmiotrace was originally modified for mainline inclusion and
24 -----------
29 is on-line, therefore mmiotrace takes all but one CPU off-line during run-time
30 activation. You can re-enable CPUs by hand, but you have been warned, there
35 ---------------------
38 $ mount -t debugfs debugfs /sys/kernel/debug
48 -----
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Dftrace.rst2 ftrace - Function Tracer
13 - Written for: 2.6.28-rc2
14 - Updated for: 3.10
15 - Updated for: 4.13 - Copyright 2017 VMware Inc. Steven Rostedt
16 - Converted to rst format - Changbin Du <changbin.du@intel.com>
19 ------------
24 performance issues that take place outside of user-space.
41 ----------------------
43 See Documentation/trace/ftrace-design.rst for details for arch porters and such.
47 ---------------
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Dhistogram.rst33 numeric fields - on an event hit, the value(s) will be added to a
35 in place of an explicit value field - this is simply a count of
45 useful for providing more fine-grained summaries of event data.
55 number and type of fields and those fields also have the same names.
69 numeric fields are displayed as base-10 integers. This can be
76 .sym-offset display an address as a symbol and offset
83 .graph display a bar-graph of a value
91 - only the 'hex' modifier can be used for values (because values
94 - the 'execname' modifier can only be used on a 'common_pid'. The
100 pid-specific comm fields in the event itself.
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Dkprobetrace.rst2 Kprobe-based Event Tracing
8 --------
9 These events are similar to tracepoint-based events. Instead of tracepoints,
13 Unlike the tracepoint-based event, this can be added and removed
28 -------------------------
34 -:[GRP/][EVENT] : Clear a probe
50 @SYM[+|-offs] : Fetch memory at SYM +|- offs (SYM should be a data symbol)
56 +|-[u]OFFS(FETCHARG) : Fetch memory at FETCHARG +|- OFFS address.(\*3)(\*4)
72 (\*4) "u" means user-space dereference. See :ref:`user_mem_access`.
75 -------------------------------
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/Documentation/kbuild/
Dreproducible-builds.rst17 ----------
30 By default the timestamp is the current time and in the case of
37 code that does use these, you must override the timestamp they
42 ----------
44 The kernel embeds the building user and host names in
50 ------------------
52 When the kernel is built out-of-tree, debug information may include
54 including the ``-fdebug-prefix-map`` option in the `KCFLAGS`_ variable.
57 to an absolute filename in an out-of-tree build. Kbuild automatically
58 uses the ``-fmacro-prefix-map`` option to prevent this, if it is
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Dkbuild.rst10 -------------
16 ---------------
21 -----------------------
26 ----------------------
29 to associate module names with symbols.
35 ---------
41 ----------------
46 -------
47 Additional options to the assembler (for built-in and modules).
50 -------------
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/Documentation/devicetree/bindings/timer/
Dnvidia,tegra-timer.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/timer/nvidia,tegra-timer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Stephen Warren <swarren@nvidia.com>
13 - if:
17 const: nvidia,tegra210-timer
27 - if:
31 - items:
32 - enum:
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/Documentation/filesystems/
Dvfat.rst10 mount -t vfat /dev/fd0 /mnt
42 **-20**: If current process is in group of file's group ID,
43 you can change timestamp.
45 **-2**: Other users can change timestamp.
69 There is also an option of doing UTF-8 translations
76 UTF-8 is the filesystem safe version of Unicode that
79 If 'uni_xlate' gets set, UTF-8 gets disabled.
152 from each timestamp to convert it to UTC used internally by
156 cases in presence of DST - time stamps in a different DST
176 FAT has the ATTR_RO (read-only) attribute. On Windows,
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Dadfs.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Acorn Disc Filing System - ADFS
8 -----------------------------
12 - new maps
13 - new directories or big directories
17 - E and E+, with or without boot block
18 - F and F+
29 directory updates, specifically updating the access mode and timestamp.
32 ----------------------
49 ------------------------------------------------
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/Documentation/trace/coresight/
Dcoresight.rst2 Coresight - HW Assisted Tracing on ARM
9 ------------
38 0 CPU 0<-->: C : 0 CPU 0<-->: C : : C : @ STM @ || System ||
39 |->0000000 : T : |->0000000 : T : : T :<--->@@@@@ || Memory ||
40 | #######<-->: I : | #######<-->: I : : I : @@@<-| ||||||||||||
43 | |->### | ! | |->### | ! | ! . | || DAP ||
49 *****************************************************************<-|
63 | * ===== F =====<---------|
65 |-->:: CTI ::<!! === N ===
69 |------>&& ETB &&<......II I =======
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Dcoresight-etm4x-reference.rst11 ---------------------------
17 ETMv4 registers that they effect. Note the register names are given without
20 ----
37 ----
47 ----
52 - > 0 : Programs up the hardware with the current values held in the driver
55 - = 0 : disable trace hardware.
60 ----
72 ----
77 When FEAT_TRF is implemented, value of TRFCR_ELx.TS used for trace session. Otherwise -1
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/Documentation/dev-tools/
Dgpio-sloppy-logic-analyzer.rst1 .. SPDX-License-Identifier: GPL-2.0
12 This document briefly describes how to run the GPIO based in-kernel sloppy
22 Another feature is to snoop on on-chip peripherals if the I/O cells of these
26 control subsystem such pin controllers are called "non-strict": a certain pin
31 non-deterministic code paths and non-maskable interrupts. It is called 'sloppy'
47 i2c-analyzer {
48 compatible = "gpio-sloppy-logic-analyzer";
49 probe-gpios = <&gpio6 21 GPIO_OPEN_DRAIN>, <&gpio6 4 GPIO_OPEN_DRAIN>;
50 probe-names = "SCL", "SDA";
62 ``tools/gpio/gpio-sloppy-logic-analyzer``. Besides checking parameters more
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/Documentation/ABI/testing/
Dsysfs-timecard24 IRIG adjustments from external IRIG-B signal
42 IRIG signal is sent to the IRIG-B module
62 IRIG output is from the PHC, in IRIG-B format
106 Description: (RW) Specifies the number of seconds from 0-255 that the
118 Description: (RO) Specifies the signal duty cycle as a percentage from 1-99.
164 a percentage from 1-99. Polarity is 1 or 0.
184 Description: (RW) An integer from 0-7 indicating the timecode format
185 of the IRIG-B output signal: B00<n>
241 taken from the UBX-NAV-TIMELS message.
247 ioctl, a system timestamp is made before and after the PHC
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/Documentation/admin-guide/
Dramoops.rst9 ------------
17 ----------------
60 ----------------------
64 A. Use the module parameters (which have the names of the variables described
68 the kernel to use only the first 128 MB of memory, and place ECC-protected
74 ``Documentation/devicetree/bindings/reserved-memory/ramoops.yaml``.
77 reserved-memory {
78 #address-cells = <2>;
79 #size-cells = <2>;
85 record-size = <0x4000>;
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/Documentation/userspace-api/media/v4l/
Dhist-v4l2.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _hist-v4l2:
21 1998-08-20: First version.
23 1998-08-27: The :c:func:`select()` function was introduced.
25 1998-09-10: New video standard interface.
27 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise
36 1998-09-28: Revamped video standard. Made video controls individually
39 1998-10-02: The ``id`` field was removed from
47 1998-11-08: Many minor changes. Most symbols have been renamed. Some
50 1998-11-12: The read/write direction of some ioctls was misdefined.
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/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/
Dcounters.rst1 .. SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
13 - `Overview`_
14 - `Groups`_
15 - `Types`_
16 - `Descriptions`_
27 ----------------------------------------
29 ---------------------------------------- ---------------------------------------- |
32 | ------------------- --------------- | | ------------------- --------------- | |
34 | ------------------- --------------- | | ------------------- --------------- | |
36 | ------------------- | | ------------------- | |
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/Documentation/cdrom/
Dcdrom-standard.rst2 A Linux CD-ROM standard
14 Linux is probably the Unix-like operating system that supports
18 - The large list of hardware devices available for the many platforms
19 that Linux now supports (i.e., i386-PCs, Sparc Suns, etc.)
20 - The open design of the operating system, such that anybody can write a
22 - There is plenty of source code around as examples of how to write a driver.
29 This divergence of behavior has been very significant for CD-ROM
32 their drivers totally inconsistent, the writers of Linux CD-ROM
35 maintain uniform behavior across all the Linux CD-ROM drivers.
38 all the different CD-ROM device drivers for Linux. This document also
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/Documentation/networking/
Dnetconsole.rst1 .. SPDX-License-Identifier: GPL-2.0
29 It can be used either built-in or as a module. As a built-in,
41 netconsole=[+][r][src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]
46 src-port source for UDP packets (defaults to 6665)
47 src-ip source IP to use (interface address)
49 tgt-port port for logging agent (6666)
50 tgt-ip IP address for logging agent
51 tgt-macaddr ethernet MAC address for logging agent (broadcast)
71 Built-in netconsole starts immediately after the TCP stack is
82 On distributions using a BSD-based netcat version (e.g. Fedora,
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/Documentation/core-api/
Dcpu_hotplug.rst26 A more novel use of CPU-hotplug support is its use today in suspend resume
27 support for SMP. Dual-core and HT support makes even a laptop run SMP kernels
75 from the map depending on the event is hot-add/hot-remove. There are currently
80 be read-only for most use. When setting up per-cpu resources almost always use
94 $ ls -lh /sys/devices/system/cpu
96 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu0
97 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu1
98 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu2
99 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu3
100 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu4
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/Documentation/admin-guide/pm/
Dintel_pstate.rst1 .. SPDX-License-Identifier: GPL-2.0
22 Documentation/admin-guide/pm/cpufreq.rst if you have not done that yet.]
24 For the processors supported by ``intel_pstate``, the P-state concept is broader
27 information about that). For this reason, the representation of P-states used
32 ``intel_pstate`` maps its internal representation of P-states to frequencies too
38 Since the hardware P-state selection interface used by ``intel_pstate`` is
43 time the corresponding CPU is taken offline and need to be re-initialized when
47 only way to pass early-configuration-time parameters to it is via the kernel
66 -----------
69 hardware-managed P-states (HWP) support. If it works in this mode, the
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/Documentation/sound/designs/
Dmidi-2.0.rst12 - Support of Universal MIDI Packet (UMP)
13 - Support of MIDI 2.0 protocol messages
14 - Transparent conversions between UMP and legacy MIDI 1.0 byte stream
15 - MIDI-CI for property and profile configurations
26 MIDI-CI is a high-level protocol that can talk with the MIDI device
31 the encoding/decoding of MIDI protocols on UMP, while MIDI-CI is
32 supported in user-space over the standard SysEx.
65 When a device supports MIDI 2.0, the USB-audio driver probes and uses
69 `midi2_enable=0` option to snd-usb-audio driver module, too.
78 option to snd-usb-audio driver for skipping the UMP v1.1 inquiries.
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