Searched full:zero (Results 1 – 25 of 620) sorted by relevance
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| /Documentation/admin-guide/device-mapper/ |
| D | zero.rst | 2 dm-zero
5 Device-Mapper's "zero" target provides a block-device that always returns
6 zero'd data on reads and silently drops writes. This is similar behavior to
7 /dev/zero, but as a block-device instead of a character-device.
9 Dm-zero has no target-specific parameters.
11 One very interesting use of dm-zero is for creating "sparse" devices in
15 device. Reads to previously unwritten areas will return a zero'd buffer. When
20 To create a sparse device, start by creating a dm-zero device that's the
25 echo "0 $TEN_TERABYTES zero" | dmsetup create zero1
27 Then create a snapshot of the zero device, using any available block-device as
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| /Documentation/media/uapi/v4l/ |
| D | vidioc-s-hw-freq-seek.rst | 45 zero out the ``reserved`` array of a struct
49 The ``rangelow`` and ``rangehigh`` fields can be set to a non-zero value
91 - If non-zero, seek upward from the current frequency, else seek
95 - If non-zero, wrap around when at the end of the frequency range,
100 - If non-zero, defines the hardware seek resolution in Hz. The
102 If spacing is zero a reasonable default value is used.
105 - If non-zero, the lowest tunable frequency of the band to search in
111 ``rangelow`` is zero a reasonable default value is used.
114 - If non-zero, the highest tunable frequency of the band to search
120 ``rangehigh`` is zero a reasonable default value is used.
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| D | vidioc-expbuf.rst | 53 range from zero to the number of buffers allocated with
57 the index of the plane to be exported. Valid planes range from zero to
59 the single-planar API, applications must set ``plane`` to zero.
62 and O_RDWR are supported. All other fields must be set to zero. In the
144 zero to the number of buffers allocated with the
150 Otherwise this value must be set to zero.
163 the array to zero.
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| D | vidioc-g-enc-index.rst | 57 ``V4L2_ENC_IDX_ENTRIES``, but not zero. When the application fails to
60 will be zero.
81 zero.
85 array to zero.
109 driver resets the offset to zero.
124 zero.
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| D | vidioc-g-audioout.rst | 45 To query the current audio output applications zero out the ``reserved``
87 field to zero.
91 ``VIDIOC_S_AUDOUT``) must set this field to zero.
95 the array to zero.
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| D | vidioc-g-parm.rst | 130 zero.
137 applications and drivers must set this field to zero. Applications
145 requests zero buffers, drivers should just return the current
151 the array to zero.
187 zero.
194 applications and drivers must set this field to zero. Applications
202 zero buffers, drivers should just return the current setting
208 the array to zero.
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| D | vidioc-dv-timings-cap.rst | 46 initialize the ``pad`` field to 0, zero the reserved array of struct
62 zero the ``reserved`` array. Attempts to query capabilities on a pad
104 Drivers must set the array to zero.
124 video node applications must set this field to zero.
129 Drivers and applications must set the array to zero.
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| D | vidioc-enum-dv-timings.rst | 53 field, set the ``pad`` field to 0, zero the reserved array of struct
58 DV timings, applications shall begin at index zero, incrementing by one
92 video node applications must set this field to zero.
96 the array to zero.
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| /Documentation/RCU/ |
| D | torture.txt | 45 o "tfle": If non-zero, indicates that the "torture freelist"
54 to be non-zero, but it is bad for it to be a large fraction of
59 o "rtmbe": A non-zero value indicates that rcutorture believes that
61 correctly. This value should be zero.
63 o "rtbe": A non-zero value indicates that one of the rcu_barrier()
67 used to force RCU priority inversion. This value should be zero.
71 to the real-time priority level of 1. This value should be zero.
79 value should be non-zero.
82 within a timer handler. This value should be non-zero only
86 If any entries past the first two are non-zero, RCU is broken.
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| /Documentation/devicetree/bindings/mtd/ |
| D | fsmc-nand.txt | 16 are valid. Zero means one clockcycle, 15 means 16 clock
21 Only valid for write transactions. Zero means zero cycles,
24 when writing) after the command deassertation. Zero means
27 NAND flash in response to SMWAITn. Zero means 1 cycle,
30 command is asserted. Zero means one cycle, 255 means 256
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| /Documentation/media/uapi/mediactl/ |
| D | media-ioc-g-topology.rst | 69 this field starts with zero. Every time a graph element is added
83 stored, converted to a 64-bits integer. It can be zero. if zero,
98 stored, converted to a 64-bits integer. It can be zero. if zero,
113 converted to a 64-bits integer. It can be zero. if zero, the ioctl
127 converted to a 64-bits integer. It can be zero. if zero, the ioctl
166 this array to zero.
195 this array to zero.
253 this array to zero.
290 this array to zero.
302 num_interfaces, num_links or num_pads are non-zero and are
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| D | request-func-poll.rst | 72 is non-zero). Request file descriptor set the ``POLLPRI`` flag in ``revents``
74 a value of zero, on failure it returns -1 and the ``errno`` variable is
85 structures which have non-zero ``revents`` fields, or zero if the call
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| /Documentation/devicetree/bindings/rtc/ |
| D | moxa,moxart-rtc.txt | 6 - gpio-rtc-sclk : RTC sclk gpio, with zero flags
7 - gpio-rtc-data : RTC data gpio, with zero flags
8 - gpio-rtc-reset : RTC reset gpio, with zero flags
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| /Documentation/devicetree/bindings/arm/bcm/ |
| D | brcm,bcm2835.txt | 57 Raspberry Pi Zero
59 compatible = "raspberrypi,model-zero", "brcm,bcm2835";
61 Raspberry Pi Zero W
63 compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
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| /Documentation/arm64/ |
| D | tagged-pointers.rst | 38 Using non-zero address tags in any of these locations when the
44 passing non-zero address tags to the kernel via system calls is
45 forbidden, and using a non-zero address tag for sp is strongly
48 Programs maintaining a frame pointer and frame records that use non-zero
56 Non-zero tags are not preserved when delivering signals. This means that
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| /Documentation/devicetree/bindings/arm/ |
| D | l2c2x0.yaml | 130 non-zero, disable if zero.
137 if non-zero, disable if zero.
144 if non-zero, disable if zero.
150 description: Override prefetch drop enable setting. Enable if non-zero,
151 disable if zero.
227 arm,full-line-zero-disable:
228 description: Disable the CA9 optimization Full line of zero
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| D | sunxi.yaml | 119 - description: BananaPi M2 Zero
121 - const: sinovoip,bpi-m2-zero
345 - description: Lichee Pi Zero
347 - const: licheepi,licheepi-zero
350 - description: Lichee Pi Zero (with Dock)
352 - const: licheepi,licheepi-zero-dock
353 - const: licheepi,licheepi-zero
356 - description: Lichee Zero Plus (with S3, without eMMC/SPI Flash)
358 - const: sipeed,lichee-zero-plus
805 - description: Xunlong OrangePi Zero
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| /Documentation/virt/kvm/devices/ |
| D | xics.txt | 27 Zero is the highest priority, 255 means no interrupt is pending.
30 Zero is the highest priority, 255 means no IPI is pending.
33 Zero means no interrupt pending, 2 means an IPI is pending
36 Zero is the highest priority, meaning no interrupts can be
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| /Documentation/filesystems/ext4/ |
| D | verity.rst | 14 - Zero-padding to the next 65536-byte boundary. This padding need not
23 - Zero-padding to the next filesystem block boundary.
29 - Zero-padding to the next offset that is 4 bytes before a filesystem
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| /Documentation/media/uapi/cec/ |
| D | cec-func-poll.rst | 55 is non-zero). CEC devices set the ``POLLIN`` and ``POLLRDNORM`` flags in
60 a value of zero, on failure it returns -1 and the ``errno`` variable is
70 non-zero ``revents`` fields, or zero if the call timed out. On error -1
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| /Documentation/arm/ |
| D | kernel_user_helpers.rst | 134 r0 = success code (zero or non-zero)
144 Return zero if `*ptr` was changed or non-zero if no exchange happened.
226 r0 = success code (zero or non-zero)
236 is equal to the 64-bit value pointed by `*oldval`. Return zero if `*ptr` was
237 changed or non-zero if no exchange happened.
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| /Documentation/devicetree/bindings/rng/ |
| D | timeriomem_rng.txt | 10 rng. Defaults to zero which causes the kernel's default quality to
11 be used instead. Note that the default quality is usually zero
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| /Documentation/driver-api/early-userspace/ |
| D | buffer-format.rst | 44 formats); arbitrary amounts zero bytes (for padding) can be added
72 otherwise zero
78 The c_filesize should be zero for any file which is not a regular file
88 marker; the c_filesize for an end-of-archive marker must be zero.
100 should be set to zero to indicate no data section follows. If data is
106 c_filesize must not be zero for a symlink.
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| /Documentation/devicetree/bindings/leds/ |
| D | leds-trigger-pattern.txt | 19 It will make the LED go gradually from zero-intensity to max (255) intensity in
20 1000 milliseconds, then back to zero intensity in 2000 milliseconds:
32 use zero-time lengths (the brightness must be same as the previous tuple's). So
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| /Documentation/devicetree/bindings/soc/fsl/cpm_qe/ |
| D | cpm.txt | 29 should be dynamically allocated. If zero, the
43 if the user-data area does not begin at zero.
49 - A child address of zero must be translatable, even if no reg resources
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