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/Documentation/scheduler/
Dsched-debug.rst20 -------------------------------------------------------------------
24 memory node local to where the task is running. Every "scan delay" the task
25 scans the next "scan size" number of pages in its address space. When the
28 In combination, the "scan delay" and "scan size" determine the scan rate.
29 When "scan delay" decreases, the scan rate increases. The scan delay and
30 hence the scan rate of every task is adaptive and depends on historical
31 behaviour. If pages are properly placed then the scan delay increases,
32 otherwise the scan delay decreases. The "scan size" is not adaptive but
33 the higher the "scan size", the higher the scan rate.
35 Higher scan rates incur higher system overhead as page faults must be
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/Documentation/devicetree/bindings/input/
Dlpc32xx-key.txt1 NXP LPC32xx Key Scan Interface
3 This binding is based on the matrix-keymap binding with the following
7 - compatible: Should be "nxp,lpc3220-key"
8 - reg: Physical base address of the controller and length of memory mapped
10 - interrupts: The interrupt number to the cpu.
11 - clocks: phandle to clock controller plus clock-specifier pair
12 - nxp,debounce-delay-ms: Debounce delay in ms
13 - nxp,scan-delay-ms: Repeated scan period in ms
14 - linux,keymap: the key-code to be reported when the key is pressed
16 Documentation/devicetree/bindings/input/matrix-keymap.txt
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Dgpio-matrix-keypad.txt6 keypad can sense a key-press and key-release by means of GPIO lines and
10 - compatible: Should be "gpio-matrix-keypad"
11 - row-gpios: List of gpios used as row lines. The gpio specifier
14 - col-gpios: List of gpios used as column lines. The gpio specifier
17 - linux,keymap: The definition can be found at
18 bindings/input/matrix-keymap.txt
21 - linux,no-autorepeat: do no enable autorepeat feature.
22 - wakeup-source: use any event on keypad as wakeup event.
24 - debounce-delay-ms: debounce interval in milliseconds
25 - col-scan-delay-us: delay, measured in microseconds, that is needed
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Dti,nspire-keypad.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/ti,nspire-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI-NSPIRE Keypad
10 - Andrew Davis <afd@ti.com>
13 - $ref: input.yaml#
14 - $ref: matrix-keymap.yaml#
19 - ti,nspire-keypad
30 scan-interval:
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Dqcom,pm8921-keypad.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/qcom,pm8921-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
13 - $ref: input.yaml#
14 - $ref: matrix-keymap.yaml#
19 - qcom,pm8058-keypad
20 - qcom,pm8921-keypad
27 - description: key sense
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Dnvidia,tegra20-kbc.txt7 - compatible: "nvidia,tegra20-kbc"
8 - reg: Register base address of KBC.
9 - interrupts: Interrupt number for the KBC.
10 - nvidia,kbc-row-pins: The KBC pins which are configured as row. This is an
12 - nvidia,kbc-col-pins: The KBC pins which are configured as column. This is an
14 - linux,keymap: The keymap for keys as described in the binding document
15 devicetree/bindings/input/matrix-keymap.txt.
16 - clocks: Must contain one entry, for the module clock.
17 See ../clocks/clock-bindings.txt for details.
18 - resets: Must contain an entry for each entry in reset-names.
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/Documentation/translations/zh_CN/scheduler/
Dsched-debug.rst1 .. SPDX-License-Identifier: GPL-2.0
2 .. include:: ../disclaimer-zh_CN.rst
4 :Original: Documentation/scheduler/sched-debug.rst
26 -------------------------------------------------------------------
29 迁移到任务正在运行的本地内存结点,此时需解映射页面。每个“扫描延迟”(scan delay
30 时间之后,任务扫描其地址空间中下一批“扫描大小”(scan size)个页面。若抵达
/Documentation/admin-guide/mm/
Dksm.rst8 KSM is a memory-saving de-duplication feature, enabled by CONFIG_KSM=y,
19 content which can be replaced by a single write-protected page (which
47 may suddenly require more memory than is available - possibly failing
48 with EAGAIN, but more probably arousing the Out-Of-Memory killer.
60 will exceed ``vm.max_map_count`` (see Documentation/admin-guide/sysctl/vm.rst).
80 how many pages to scan before ksmd goes to sleep
84 been set to scan-time.
89 how many milliseconds ksmd should sleep before next scan
158 scan. It's a noop if not a single KSM page hit the
162 Historically KSM checked every candidate page for each scan. It did
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Dtranshuge.rst26 requiring larger clear-page copy-page in page faults which is a
48 Modern kernels support "multi-size THP" (mTHP), which introduces the
50 but smaller than traditional PMD-size (as described above), in
51 increments of a power-of-2 number of pages. mTHP can back anonymous
53 PTE-mapped, but in many cases can still provide similar benefits to
56 prominent because the size of each page isn't as huge as the PMD-sized
66 collapses sequences of basic pages into PMD-sized huge pages.
91 possible to disable hugepages system-wide and to only have them inside
108 -------------------
113 system wide. This can be achieved per-supported-THP-size with one of::
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/Documentation/iio/
Diio_devbuf.rst1 .. SPDX-License-Identifier: GPL-2.0
14 Devices with buffer support feature an additional sub-directory in the
25 ----------
31 ----------
34 be written last, after length and selection of scan elements. Writing a non-zero
39 -------------
41 Read / Write positive integer attribute specifying the maximum number of scan
49 Non-blocking read will retrieve the available samples from the buffer even if
52 expires and thus have a maximum delay guarantee.
55 --------------
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/Documentation/driver-api/media/drivers/
Dvidtv.rst1 .. SPDX-License-Identifier: GPL-2.0
10 ----------
18 - A fake tuner driver, which will report a bad signal quality if the chosen
22 - A fake demod driver, which will constantly poll the fake signal quality
26 - A fake bridge driver, which is the module responsible for modprobing the
31 - Code responsible for encoding a valid MPEG Transport Stream, which is then
33 For now, we have a single, audio-only channel containing a single MPEG
34 Elementary Stream, which in turn contains a SMPTE 302m encoded sine-wave.
39 --------------
45 - Enable **DVB_TEST_DRIVERS**, then
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/Documentation/devicetree/bindings/mfd/
Dst,stmpe.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: /schemas/spi/spi-peripheral-props.yaml#
23 - st,stmpe601
24 - st,stmpe801
25 - st,stmpe811
26 - st,stmpe1600
27 - st,stmpe1601
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/Documentation/devicetree/bindings/mmc/
Dmtk-sd.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mmc/mtk-sd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Chaotian Jing <chaotian.jing@mediatek.com>
11 - Wenbin Mei <wenbin.mei@mediatek.com>
16 - enum:
17 - mediatek,mt2701-mmc
18 - mediatek,mt2712-mmc
19 - mediatek,mt6779-mmc
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/Documentation/ABI/obsolete/
Dsysfs-bus-iio3 Contact: linux-iio@vger.kernel.org
14 Contact: linux-iio@vger.kernel.org
26 Contact: linux-iio@vger.kernel.org
50 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
62 Contact: linux-iio@vger.kernel.org
64 Scan element control for triggered data capture.
86 Contact: linux-iio@vger.kernel.org
88 Description of the scan element data storage within the buffer
89 and hence the form in which it is read from user-space.
140 scan element in the buffer. Note these are not dependent on
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/Documentation/scsi/
Dscsi_mid_low_api.rst1 .. SPDX-License-Identifier: GPL-2.0
4 SCSI mid_level - lower_level driver interface
14 (SCSI terminology, see SAM-3 at http://www.t10.org) sends SCSI commands
22 Examples are the usb-storage driver (found in the drivers/usb/storage
30 HBAs. These HBAs might be either on PCI daughter-boards or built into
33 has its own PCI device address. [The one-to-one correspondence between
49 documented in Documentation/scsi (e.g. aic7xxx.rst). The SCSI mid-level is
53 scsi-generic.rst (for the sg driver).
68 and OS-specific code (e.g. FreeBSD and Linux). Such drivers tend to have
145 HBA PROBE: assume 2 SCSI devices found in scan
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Dsym53c8xx_2.rst1 .. SPDX-License-Identifier: GPL-2.0
4 SYM-2 driver
11 95170 DEUIL LA BARRE - FRANCE
15 2004-10-09
50 10.2.10 Settle delay
67 This driver supports the whole SYM53C8XX family of PCI-SCSI controllers.
68 It also support the subset of LSI53C10XX PCI-SCSI controllers that are based
72 with the FreeBSD SYM-2 driver. The 'glue' that allows this driver to work
81 - Wolfgang Stanglmeier <wolf@cologne.de>
82 - Stefan Esser <se@mi.Uni-Koeln.de>
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Dncr53c8xx.rst1 .. SPDX-License-Identifier: GPL-2.0
11 95170 DEUIL LA BARRE - FRANCE
64 10.4 PCI configuration fix-up boot option
81 16.1 Synchronous timings for 53C875 and 53C860 Ultra-SCSI controllers
82 16.2 Synchronous timings for fast SCSI-2 53C8XX controllers
97 - Gerard Roudier <groudier@free.fr>
101 - Wolfgang Stanglmeier <wolf@cologne.de>
102 - Stefan Esser <se@mi.Uni-Koeln.de>
106 - ncr53c8xx generic driver that supports all the SYM53C8XX family including
109 - sym53c8xx enhanced driver (a.k.a. 896 drivers) that drops support of oldest
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DChangeLog.ncr53c8xx1 Sat May 12 12:00 2001 Gerard Roudier (groudier@club-internet.fr)
2 * version ncr53c8xx-3.4.3b
3 - Ensure LEDC bit in GPCNTL is cleared when reading the NVRAM.
4 Fix sent by Stig Telfer <stig@api-networks.com>.
5 - Define scsi_set_pci_device() as nil for kernel < 2.4.4.
7 Mon Feb 12 22:30 2001 Gerard Roudier (groudier@club-internet.fr)
8 * version ncr53c8xx-3.4.3
9 - Call pci_enable_device() as AC wants this to be done.
10 - Get both the BAR cookies actual and PCI BAR values.
12 - Merge changes for linux-2.4 that declare the host template
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/Documentation/userspace-api/media/v4l/
Dext-ctrls-codec.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _codec-controls:
24 .. _mpeg-control-id:
27 -----------------
35 .. _v4l2-mpeg-stream-type:
40 enum v4l2_mpeg_stream_type -
41 The MPEG-1, -2 or -4 output stream type. One cannot assume anything
48 .. flat-table::
49 :header-rows: 0
50 :stub-columns: 0
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/Documentation/driver-api/
Dmtdnand.rst10 The generic NAND driver supports almost all NAND and AG-AND based chips
31 --------------------------
37 - [MTD Interface]
43 - [NAND Interface]
48 - [GENERIC]
53 - [DEFAULT]
65 -------------------------------
71 - [INTERN]
77 - [REPLACEABLE]
86 - [BOARDSPECIFIC]
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/Documentation/gpu/
Ddrm-mm.rst6 frame buffers, textures, vertices and other graphics-related data. Given
13 manager to be developed and tried to be a one-size-fits-them all
20 GEM started as an Intel-sponsored project in reaction to TTM's
22 providing a solution to every graphics memory-related problems, GEM
31 .. kernel-doc:: drivers/gpu/drm/ttm/ttm_module.c
34 .. kernel-doc:: include/drm/ttm/ttm_caching.h
38 ---------------------------
40 .. kernel-doc:: include/drm/ttm/ttm_device.h
43 .. kernel-doc:: drivers/gpu/drm/ttm/ttm_device.c
47 --------------------------------
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/Documentation/admin-guide/
Dkernel-parameters.txt16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nospcr -- disable console in ACPI SPCR table as
41 If set to vendor, prefer vendor-specific driver
73 Documentation/firmware-guide/acpi/debug.rst for more information about
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Dxfs.rst1 .. SPDX-License-Identifier: GPL-2.0
8 on the SGI IRIX platform. It is completely multi-threaded, can
15 for further details. This implementation is on-disk compatible
25 Sets the buffered I/O end-of-file preallocation size when
28 through to 1GiB, inclusive, in power-of-2 increments.
30 The default behaviour is for dynamic end-of-file
40 on-disk. When the new form is used for the first time when
42 attributes) the on-disk superblock feature bit field will be
45 The default behaviour is determined by the on-disk feature
116 Set the number of in-memory log buffers. Valid numbers
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/Documentation/ABI/testing/
Dsysfs-bus-iio3 Contact: linux-iio@vger.kernel.org
11 Contact: linux-iio@vger.kernel.org
25 Contact: linux-iio@vger.kernel.org
31 Contact: linux-iio@vger.kernel.org
38 Contact: linux-iio@vger.kernel.org
44 The contents of the label are free-form, but there are some
51 * "proximity-wifi"
52 * "proximity-lte"
53 * "proximity-wifi-lte"
54 * "proximity-wifi-left"
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/Documentation/filesystems/
Dvfs.rst1 .. SPDX-License-Identifier: GPL-2.0
9 - Copyright (C) 1999 Richard Gooch
10 - Copyright (C) 2005 Pekka Enberg
27 ------------------------------
32 cache or dcache). This provides a very fast look-up mechanism to
44 ----------------
64 ---------------
67 structure (this is the kernel-side implementation of file descriptors).
88 .. code-block:: c
99 ->mount() will be attached to the mountpoint, so that when pathname
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