Searched full:pi (Results 1 – 25 of 70) sorted by relevance
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| /Documentation/locking/ |
| D | futex-requeue-pi.rst | 2 Futex Requeue PI
5 Requeueing of tasks from a non-PI futex to a PI futex requires
7 left without an owner if it has waiters; doing so would break the PI
11 "PI".
51 previously mentioned PI-boosting algorithms.
53 In order to support PI-aware pthread_condvar's, the kernel needs to
54 be able to requeue tasks to PI futexes. This support implies that
56 user space already holding the PI futex. The glibc implementation
81 The actual glibc implementation will likely test for PI and make the
83 calls for the PI cases. Similar changes are needed for
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| D | pi-futex.rst | 2 Lightweight PI-futexes
7 - in the user-space fastpath a PI-enabled futex involves no kernel work
8 (or any other PI complexity) at all. No registration, no extra kernel
14 - the in-kernel PI implementation is streamlined around the mutex
23 The short reply: user-space PI helps achieving/improving determinism for
25 determinism and well-bound latencies. Even in the worst-case, PI will
66 Currently (without PI), if a high-prio and a low-prio task shares a lock
78 As mentioned before, the userspace fastpath of PI-enabled pthread
94 own TID into the futex value], and attaches a 'PI state' structure to
95 the futex-queue. The pi_state includes an rt-mutex, which is a PI-aware,
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| D | rt-mutex-design.rst | 17 inheritance (PI) algorithm that is used, as well as reasons for the
18 decisions that were made to implement PI in the manner that was done.
58 Priority Inheritance (PI)
62 for this document. Here we only discuss PI.
64 PI is where a process inherits the priority of another process if the other
77 the design that is used to implement PI.
79 PI chain
80 - The PI chain is an ordered series of locks and processes that cause
87 PI and spin locks that are used in the PI code, from now on
88 the PI locks will be called a mutex.
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| D | index.rst | 21 pi-futex
22 futex-requeue-pi
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| D | rt-mutex.rst | 2 RT-mutex subsystem with PI support
5 RT-mutexes with priority inheritance are used to support PI-futexes,
7 (PTHREAD_PRIO_INHERIT). [See Documentation/locking/pi-futex.rst for more details
8 about PI-futexes.]
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| /Documentation/userspace-api/media/v4l/ |
| D | metafmt-pisp-be.rst | 9 Raspberry Pi PiSP Back End configuration format
12 The Raspberry Pi PiSP Back End memory-to-memory image signal processor is
21 The `Raspberry Pi PiSP technical specification
22 <https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf>`_
48 Raspberry Pi PiSP Back End uAPI data types
51 This section describes the data types exposed to userspace by the Raspberry Pi
53 each field refer to the `Raspberry Pi PiSP technical specification
54 <https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf>`_.
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| /Documentation/hwmon/ |
| D | raspberrypi-hwmon.rst | 6 * Raspberry Pi A+ (via GPIO on SoC)
7 * Raspberry Pi B+ (via GPIO on SoC)
8 * Raspberry Pi 2 B (via GPIO on SoC)
9 * Raspberry Pi 3 B (via GPIO on port expander)
10 * Raspberry Pi 3 B+ (via PMIC)
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| /Documentation/networking/pse-pd/ |
| D | pse-pi.rst | 3 PSE Power Interface (PSE PI) Documentation
6 The Power Sourcing Equipment Power Interface (PSE PI) plays a pivotal role in
16 The IEEE 802.3 standard provides detailed documentation on the PSE PI.
19 - Section "33.2.3 PI pin assignments" covers the pin assignments for PoE
21 - Section "145.2.4 PSE PI" addresses the configuration for PoE systems that
24 PSE PI and Single Pair Ethernet
29 transmission. Unlike the configurations detailed in the PSE PI for standard
33 assignments for power delivery, as described in the PSE PI for multi-pair
36 Understanding PSE PI
39 The Power Sourcing Equipment Power Interface (PSE PI) is a framework defining
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| D | index.rst | 10 pse-pi
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| /Documentation/devicetree/bindings/media/ |
| D | raspberrypi,pispbe.yaml | 7 title: Raspberry Pi PiSP Image Signal Processor (ISP) Back End
10 - Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
14 The Raspberry Pi PiSP Image Signal Processor (ISP) Back End is an image
19 https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf
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| D | brcm,bcm2835-unicam.yaml | 10 - Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
16 The main platform using this SoC is the Raspberry Pi family of boards. On
17 the Pi the VideoCore firmware can also control this hardware block, and
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| /Documentation/admin-guide/media/ |
| D | raspberrypi-pisp-be.rst | 4 Raspberry Pi PiSP Back End Memory-to-Memory ISP (pisp-be)
15 The ISP registers and programming model are documented in the `Raspberry Pi
27 part of the Raspberry Pi platform support.
32 The Raspberry Pi PiSP Back End (pisp-be) driver is located under
64 `Raspberry Pi Image Signal Processor (PiSP) Specification document`_.
98 described in the `Raspberry Pi Image Signal Processor (PiSP) Specification
109 .. _Raspberry Pi Image Signal Processor (PiSP) Specification document: https://datasheets.raspberry…
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| /Documentation/devicetree/bindings/arm/samsung/ |
| D | samsung-boards.yaml | 188 - description: Google Peach Pi Boards (Rev 10+)
190 - const: google,pi-rev16
191 - const: google,pi-rev15
192 - const: google,pi-rev14
193 - const: google,pi-rev13
194 - const: google,pi-rev12
195 - const: google,pi-rev11
196 - const: google,pi-rev10
197 - const: google,pi
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| /Documentation/devicetree/bindings/net/pse-pd/ |
| D | pse-controller.yaml | 47 "^pse-pi@[0-9a-f]+$":
50 PSE PI for power delivery via pairsets, compliant with IEEE
54 See Documentation/networking/pse-pd/pse-pi.rst for details.
59 Address describing the PSE PI index.
103 Polarity configuration supported by the PSE PI pairsets.
114 description: Regulator power supply for the PSE PI.
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| D | ti,tps23881.yaml | 97 pse_pi0: pse-pi@0 {
106 pse_pi1: pse-pi@1 {
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| /Documentation/devicetree/bindings/powerpc/nintendo/ |
| D | gamecube.txt | 25 1.b) The Processor Interface (PI) node
32 - compatible : should be "nintendo,flipper-pi"
33 - reg : should contain the PI registers location and length
39 the PI node.
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| D | wii.txt | 34 1.b) The Processor Interface (PI) node
41 - compatible : should be "nintendo,hollywood-pi","nintendo,flipper-pi"
42 - reg : should contain the PI registers location and length
48 the PI node.
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| /Documentation/devicetree/bindings/arm/ |
| D | rda.yaml | 18 - xunlong,orangepi-2g-iot # Orange Pi 2G-IoT
19 - xunlong,orangepi-i96 # Orange Pi i96
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| D | rockchip.yaml | 92 - description: Cool Pi Compute Module 5(CM5) EVB
95 - coolpi,pi-cm5-evb
96 - const: coolpi,pi-cm5
99 - description: Cool Pi CM5 GenBook
102 - coolpi,pi-cm5-genbook
103 - const: coolpi,pi-cm5
106 - description: Cool Pi 4 Model B
108 - const: coolpi,pi-4b
656 - description: LCKFB Taishan Pi RK3566
688 - description: Xunlong Orange Pi RK3399 board
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| /Documentation/translations/zh_CN/locking/ |
| D | index.rst | 31 * pi-futex
32 * futex-requeue-pi
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| /Documentation/devicetree/bindings/riscv/ |
| D | thead.yaml | 24 - description: Sipeed Lichee Pi 4A board for the Sipeed Lichee Module 4A
27 - sipeed,lichee-pi-4a
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| /Documentation/ABI/testing/ |
| D | sysfs-bus-pci-devices-pvpanic | 4 Contact: zhenwei pi <pizhenwei@bytedance.com>
18 Contact: zhenwei pi <pizhenwei@bytedance.com>
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| /Documentation/devicetree/bindings/net/ |
| D | davicom,dm9051.yaml | 45 # Raspberry Pi platform
47 /* for Raspberry Pi with pin control stuff for GPIO irq */
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| D | microchip,lan78xx.txt | 4 an external EEPROM, but some platforms (e.g. Raspberry Pi 3 B+) have neither.
20 /* Based on the configuration for a Raspberry Pi 3 B+ */
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| /Documentation/devicetree/bindings/soc/bcm/ |
| D | raspberrypi,bcm2835-power.txt | 1 Raspberry Pi power domain driver
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