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/Linux-v5.15/fs/nls/
DKconfig11 as the ability of some filesystems to use native languages
16 To compile this code as a module, choose M here: the module
27 system (if different) to store data (filenames) on a disk.
45 in so-called DOS codepages. You need to include the appropriate
46 codepage if you want to be able to read/write these filenames on
47 DOS/Windows partitions correctly. This does apply to the filenames
48 only, not to the file contents. You can include several codepages;
49 say Y here if you want to include the DOS codepage that is used in
57 in so-called DOS codepages. You need to include the appropriate
58 codepage if you want to be able to read/write these filenames on
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/Linux-v5.15/net/sched/
DKconfig10 When the kernel has several packets to send out over a network
11 device, it has to decide which ones to send first, which ones to
12 delay, and which ones to drop. This is the job of the queueing
13 disciplines, several different algorithms for how to do this
18 able to choose from among several alternative algorithms which can
19 then be attached to different network devices. This is useful for
21 need a certain minimum data flow rate, or if you need to limit the
23 This code is considered to be experimental.
25 To administer these schedulers, you'll need the user-level utilities
31 This Quality of Service (QoS) support will enable you to use
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/Linux-v5.15/arch/m68k/hp300/
Dhp300map.map11 # be saved by mapping AltGr to Alt (and adapting a few entries):
185 compose '`' 'A' to '�'
186 compose '`' 'a' to '�'
187 compose '\'' 'A' to '�'
188 compose '\'' 'a' to '�'
189 compose '^' 'A' to '�'
190 compose '^' 'a' to '�'
191 compose '~' 'A' to '�'
192 compose '~' 'a' to '�'
193 compose '"' 'A' to '�'
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/Linux-v5.15/drivers/clocksource/
Dtimer-stm32.c55 * @to: a timer_of structure pointer
58 * Accessor helper to set the number of bits in the timer-of private
62 static void stm32_timer_of_bits_set(struct timer_of *to, int bits) in stm32_timer_of_bits_set() argument
64 struct stm32_timer_private *pd = to->private_data; in stm32_timer_of_bits_set()
71 * @to: a timer_of structure pointer
73 * Accessor helper to get the number of bits in the timer-of private
76 * Returns an integer corresponding to the number of bits.
78 static int stm32_timer_of_bits_get(struct timer_of *to) in stm32_timer_of_bits_get() argument
80 struct stm32_timer_private *pd = to->private_data; in stm32_timer_of_bits_get()
99 static void stm32_clock_event_disable(struct timer_of *to) in stm32_clock_event_disable() argument
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Dtimer-mediatek.c56 #define SYST_CON_REG(to) (timer_of_base(to) + SYST_CON) argument
57 #define SYST_VAL_REG(to) (timer_of_base(to) + SYST_VAL) argument
60 * SYST_CON_EN: Clock enable. Shall be set to
65 * SYST_CON_IRQ_EN: Set to enable interrupt.
67 * SYST_CON_IRQ_CLR: Set to clear interrupt.
75 static void mtk_syst_ack_irq(struct timer_of *to) in mtk_syst_ack_irq() argument
78 writel(SYST_CON_EN, SYST_CON_REG(to)); in mtk_syst_ack_irq()
79 writel(SYST_CON_IRQ_CLR | SYST_CON_EN, SYST_CON_REG(to)); in mtk_syst_ack_irq()
85 struct timer_of *to = to_timer_of(clkevt); in mtk_syst_handler() local
87 mtk_syst_ack_irq(to); in mtk_syst_handler()
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/Linux-v5.15/drivers/usb/serial/
DKconfig11 ports, or acts like a serial device, and you want to connect it to
16 supported, and on how to use them.
18 To compile this driver as a module, choose M here: the
27 If you say Y here, it will be possible to use a USB to serial
31 terminal or printer is connected to that serial port.
37 your boot loader (lilo or loadlin) about how to pass options to the
41 kernel will automatically use the first USB to serial converter
49 Say Y here if you want to use the generic USB serial driver. Please
52 support" be compiled as a module for this driver to be used
58 Say Y here to use the USB serial "simple" driver. This driver
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/Linux-v5.15/Documentation/filesystems/
Dxfs-delayed-logging-design.rst7 Introduction to Re-logging in XFS
12 logged are made up of the changes to in-core structures rather than on-disk
14 logged. The reason for these differences is to reduce the amount of log space
21 modifications to a single object to be carried in the log at any given time.
22 This allows the log to avoid needing to flush each change to disk before
23 recording a new change to the object. XFS does this via a method called
25 new change to the object is recorded with a *new copy* of all the existing
26 changes in the new transaction that is written to the log.
28 That is, if we have a sequence of changes A through to F, and the object was
29 written to disk after change D, we would see in the log the following series
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Dnetfs_library.rst21 The network filesystem helper library is a set of functions designed to aid a
23 just includes turning various VM buffered read operations into requests to read
44 * Allows the netfs to arbitrarily split reads up into pieces, even ones that
47 * Allows the netfs to expand a readahead request in both directions to meet
50 * Allows the netfs to partially fulfil a read, which will then be resubmitted.
52 * Handles local caching, allowing cached data and server-read data to be
57 * Handle retrying of reads that failed, switching reads from the cache to the
61 local encryption of data to be stored remotely or in the cache.
64 includes a mandatory method to issue a read operation along with a number of
90 Each corresponds to a VM operation, with the addition of a couple of parameters
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/Linux-v5.15/Documentation/admin-guide/pm/
Dcpufreq.rst19 different clock frequency and voltage configurations, often referred to as
28 In some situations it is desirable or even necessary to run the program as fast
29 as possible and then there is no reason to use any P-states different from the
31 available). In some other cases, however, it may not be necessary to execute
34 It also may not be physically possible to maintain maximum CPU capacity for too
35 long for thermal or power supply capacity reasons or similar. To cover those
36 cases, there are hardware interfaces allowing CPUs to be switched between
37 different frequency/voltage configurations or (in the ACPI terminology) to be
40 Typically, they are used along with algorithms to estimate the required CPU
41 capacity, so as to decide which P-states to put the CPUs into. Of course, since
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Dcpuidle.rst19 Modern processors are generally able to enter states in which the execution of
20 a program is suspended and instructions belonging to it are not fetched from
24 generally allows power drawn by the processor to be reduced and, in consequence,
25 it is an opportunity to save energy.
36 not be separate physical entities and may just be interfaces appearing to
38 entity which appears to be fetching instructions that belong to one sequence
43 program) at a time, it is a CPU. In that case, if the hardware is asked to
44 enter an idle state, that applies to the processor as a whole.
46 Second, if the processor is multi-core, each core in it is able to follow at
51 time. The entire cores are CPUs in that case and if the hardware is asked to
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Dsleep-states.rst22 the Linux kernel can support up to four system sleep states, including
23 hibernation and up to three variants of system suspend. The sleep states that
28 Suspend-to-Idle
32 referred to as S2I or S2Idle). It allows more energy to be saved relative to
39 any devices that can cause interrupts to be generated in the working state can
43 or :ref:`suspend-to-RAM <s2ram>`, or it can be used in addition to any of the
44 deeper system suspend variants to provide reduced resume latency. It is always
53 providing a relatively straightforward transition back to the working state. No
55 go back to where it left off easily enough.
57 In addition to freezing user space, suspending the timekeeping and putting all
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/Linux-v5.15/net/netfilter/
DKconfig10 This allows you to classify packets from ingress using the Netfilter
29 to list the base netfilter hooks via NFNETLINK.
57 and is also scheduled to replace the old syslog-based ipt_LOG
75 through your machine, in order to figure out how they are related
78 This is required to do Masquerading or other kinds of Network
79 Address Translation. It can also be used to enhance packet
82 To compile it as a module, choose M here. If unsure, say N.
91 This is a simpler but less flexible logging method compared to
93 If both are enabled the backend to use can be configured at run-time
105 `CONNMARK' target and `connmark' match. Similar to the mark value
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/Linux-v5.15/tools/perf/pmu-events/arch/x86/cascadelakex/
Duncore-other.json248 …necessary to snoop them. However, if only 1 CV bit is set the core my have modified the data. If…
258 …necessary to snoop them. However, if only 1 CV bit is set the core my have modified the data. If…
298 …"PublicDescription": "Counts only multi-socket cacheline Directory state updates due to memory wri…
313 …"BriefDescription": "Read request from a remote socket which hit in the HitMe Cache to a line In t…
318 …om a remote socket which hit in the HitME cache (used to cache the multi-socket Directory state) t…
323 "BriefDescription": "Normal priority reads issued to the memory controller from the CHA",
328 …"PublicDescription": "Counts when a normal (Non-Isochronous) read is issued to any of the memory c…
333 "BriefDescription": "CHA to iMC Full Line Writes Issued; Full Line Non-ISOCH",
338 …nts when a normal (Non-Isochronous) full line write is issued from the CHA to the any of the memor…
398 … this socket for exclusive ownership of a cache line without receiving data (INVITOE) to the CHA.",
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/Linux-v5.15/Documentation/driver-api/pm/
Dcpuidle.rst16 Every time one of the logical CPUs in the system (the entities that appear to
19 there are no tasks to run on it except for the special "idle" task associated
20 with it, there is an opportunity to save energy for the processor that it
21 belongs to. That can be done by making the idle logical CPU stop fetching
26 situation in principle, so it may be necessary to find the most suitable one
27 (from the kernel perspective) and ask the processor to use (or "enter") that
35 units: *governors* responsible for selecting idle states to ask the processor
36 to enter, *drivers* that pass the governors' decisions on to the hardware and
44 one of the logical CPUs in the system turns out to be idle. Its role is to
45 select an idle state to ask the processor to enter in order to save some energy.
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/Linux-v5.15/tools/perf/pmu-events/arch/x86/skylakex/
Duncore-other.json248 …necessary to snoop them. However, if only 1 CV bit is set the core my have modified the data. If…
258 …necessary to snoop them. However, if only 1 CV bit is set the core my have modified the data. If…
298 …"PublicDescription": "Counts only multi-socket cacheline Directory state updates due to memory wri…
313 …"BriefDescription": "Read request from a remote socket which hit in the HitMe Cache to a line In t…
318 …om a remote socket which hit in the HitME cache (used to cache the multi-socket Directory state) t…
323 "BriefDescription": "Normal priority reads issued to the memory controller from the CHA",
328 …"PublicDescription": "Counts when a normal (Non-Isochronous) read is issued to any of the memory c…
333 "BriefDescription": "CHA to iMC Full Line Writes Issued; Full Line Non-ISOCH",
338 …nts when a normal (Non-Isochronous) full line write is issued from the CHA to the any of the memor…
398 … this socket for exclusive ownership of a cache line without receiving data (INVITOE) to the CHA.",
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/Linux-v5.15/Documentation/networking/
Dppp_generic.rst16 * the interface to the networking code
19 * the interface to pppd, via a /dev/ppp character device
27 mechanism for transporting PPP frames from one machine to another. A
30 to be able to send PPP frames, receive PPP frames, and optionally
35 This architecture makes it possible to implement PPP multilink in a
36 natural and straightforward way, by allowing more than one channel to
37 be linked to each ppp network interface unit. The generic layer is
46 functions used to communicate between the generic PPP layer and PPP
49 Each channel has to provide two functions to the generic PPP layer,
52 * start_xmit() is called by the generic layer when it has a frame to
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/Linux-v5.15/Documentation/scsi/
DChangeLog.lpfc5 Changes from 20050323 to 20050413
7 * Changed version number to 8.0.28
10 * Removed pci dma sync calls to coherent/consistent pci memory.
13 * Removed sysfs attributes that are used to dump the various
17 to luns on nodes in NPR or other relevant states (PLOGI,
23 * Removed extraneous calls to lpfc_sli_next_iotag which should
29 if we timed out waiting for command to complete after abort was
31 * Zero-out response sense length in lpfc_scsi_prep_cmnd to prevent
45 driver has already returned the command to the midlayer.
47 Changes from 20050308 to 20050323
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/Linux-v5.15/arch/um/drivers/
DKconfig9 console driver which dumps all printk messages to stderr.
14 The User-Mode Linux environment allows you to create virtual serial
15 lines on the UML that are usually made to show up on the host as
19 information and command line examples of how to use this facility.
27 lines to a device similar to /dev/null. Data written to it disappears
28 and there is never any data to be read.
34 lines to host portals. They may be accessed with 'telnet <host>
36 attached to a single portal, although what UML device you get when
37 you telnet to that portal will be unpredictable.
38 It is safe to say 'Y' here.
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/Linux-v5.15/sound/pci/
DKconfig17 Say Y here to include support for the integrated AC97 sound
21 To compile this as a module, choose M here: the module
31 Say 'Y' or 'M' to include support for Avance Logic ALS300/ALS300+
33 To compile this driver as a module, choose M here: the module
44 Say Y here to include support for soundcards based on Avance Logic
47 To compile this driver as a module, choose M here: the module
56 Say Y here to include support for the integrated AC97 sound
61 To compile this driver as a module, choose M here: the module
71 Say Y here to include support for AudioScience ASI sound cards.
73 To compile this driver as a module, choose M here: the module
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/Linux-v5.15/include/linux/
Dnvme-fc-driver.h16 * targets to perform FC-NVME LS requests or transmit
24 * to the LLDD to perform a NVME-FC LS request and obtain
26 * Used by nvme-fc transport (host) to send LS's such as
29 * Used by the nvmet-fc transport (controller) to send
32 * Values set by the requestor prior to calling the LLDD ls_req entrypoint:
33 * @rqstaddr: pointer to request buffer
36 * @rspaddr: pointer to response buffer
39 * @timeout: Maximum amount of time, in seconds, to wait for the LS response.
40 * If timeout exceeded, LLDD to abort LS exchange and complete
42 * @private: pointer to memory allocated alongside the ls request structure
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/Linux-v5.15/net/netfilter/ipvs/
DKconfig13 that will take care of intercepting incoming connections to a
14 single IP address and scheduling them to real servers.
19 be used to choose which server the connection is directed to,
24 If you want to compile it in kernel, say Y. To compile it as a
34 Add IPv6 support to IPVS.
41 Say Y here if you want to get additional messages useful in
50 The IPVS connection hash table uses the chaining scheme to handle
56 value of 2 to the your input number power. The number to choose is
57 from 8 to 20, the default number is 12, which means the table size
60 to your virtual server application. It is good to set the table size
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/Linux-v5.15/drivers/tty/vt/
Ddefkeymap.map12 # be saved by mapping AltGr to Alt (and adapting a few entries):
291 compose '`' 'A' to '�'
292 compose '`' 'a' to '�'
293 compose '\'' 'A' to '�'
294 compose '\'' 'a' to '�'
295 compose '^' 'A' to '�'
296 compose '^' 'a' to '�'
297 compose '~' 'A' to '�'
298 compose '~' 'a' to '�'
299 compose '"' 'A' to '�'
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/Linux-v5.15/drivers/iio/dac/
DKconfig7 menu "Digital to analog converters"
13 Say yes here to build support for Analog Devices AD5024, AD5025, AD5044,
18 Digital to Analog Converter.
20 To compile this driver as a module, choose M here: the
27 Say yes here to build support for Analog Devices AD5360, AD5361,
29 Digital to Analog Converters (DAC).
31 To compile this driver as module choose M here: the module will be called
40 Say yes here to build support for Analog Devices AD5380, AD5381,
42 Digital to Analog Converters (DAC).
44 To compile this driver as module choose M here: the module will be called
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/Linux-v5.15/drivers/input/misc/
DKconfig23 To compile this driver as a module, choose M here: the module
33 To compile this driver as a module, choose M here: the module
40 Say Y here to use the PowerOn Key for ST-Ericsson's AB8500
43 To compile this driver as a module, choose M here: the module
49 Say Y here if you want to support an AD7142/3/7/8/7A touch sensor.
53 To compile this driver as a module, choose M here: the
61 Say Y here if you have AD7142/AD7147 hooked to an I2C bus.
63 To compile this driver as a module, choose M here: the
71 Say Y here if you have AD7142/AD7147 hooked to a SPI bus.
73 To compile this driver as a module, choose M here: the
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/Linux-v5.15/Documentation/devicetree/bindings/power/
Drockchip-io-domain.yaml13 IO domain voltages on some Rockchip SoCs are variable but need to be
18 If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then
19 bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to
20 that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1.
24 hooked up to the pins.
27 any logic for deciding what voltage we should set regulators to
42 to report their voltage. The IO Voltage Domain for any non-specified
93 description: The supply connected to VCCIO1.
95 description: The supply connected to VCCIO2.
97 description: The supply connected to VCCIO3.
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