| /linux/Documentation/block/ |
| H A D | blk-mq.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Multi-Queue Block IO Queueing Mechanism (blk-mq)
7 The Multi-Queue Block IO Queueing Mechanism is an API to enable fast storage
16 ----------
22 any layer on the storage stack. One example of such optimization technique
26 However, with the development of Solid State Drives and Non-Volatile Memories
30 in those devices' design, the multi-queue mechanism was introduced.
36 to different CPUs) wanted to perform block IO. Instead of this, the blk-mq API
42 ---------
45 for instance), blk-mq takes action: it will store and manage IO requests to
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| H A D | null_blk.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 block-layer implementations. It emulates a block device of X gigabytes in size.
15 Multi-queue block-layer
17 - Request-based.
18 - Configurable submission queues per device.
20 No block-layer (Known as bio-based)
22 - Bio-based. IO requests are submitted directly to the device driver.
23 - Directly accepts bio data structure and returns them.
30 queue_mode=[0-2]: Default: 2-Multi-queue
31 Selects which block-layer the module should instantiate with.
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| /linux/drivers/net/ethernet/stmicro/stmmac/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "STMicroelectronics Multi-Gigabit Ethernet driver"
45 tristate "Support for snps,dwc-qos-ethernet.txt DT binding."
50 Support for chips using the snps,dwc-qos-ethernet.txt DT binding.
67 This selects the Anarion SoC glue layer support for the stmmac driver.
77 This selects Ingenic SoCs glue layer support for the stmmac
89 This selects the IPQ806x SoC glue layer support for the stmmac
92 will behave like standard non-accelerated ethernet interfaces.
120 This selects the Amlogic Meson SoC glue layer support for
131 This selects the Qualcomm ETHQOS glue layer support for the
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| /linux/drivers/edac/ |
| H A D | edac_mc.h | 10 * http://www.anime.net/~goemon/linux-ecc/
15 * Refactored for multi-source files:
18 * Please look at Documentation/driver-api/edac.rst for more info about
41 #define PAGES_TO_MiB(pages) ((pages) >> (20 - PAGE_SHIFT))
42 #define MiB_TO_PAGES(mb) ((mb) << (20 - PAGE_SHIFT))
44 #define PAGES_TO_MiB(pages) ((pages) << (PAGE_SHIFT - 20))
45 #define MiB_TO_PAGES(mb) ((mb) >> (PAGE_SHIFT - 20))
52 printk(level "EDAC MC%d: " fmt, mci->mc_idx, ##arg)
55 printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg)
58 printk(level "EDAC DEVICE%d: " fmt, ctl->dev_idx, ##arg)
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| /linux/Documentation/firmware-guide/acpi/apei/ |
| H A D | output_format.rst | 1 .. SPDX-License-Identifier: GPL-2.0
55 [cache error][, TLB error][, bus error][, micro-architectural error]
81 unknown | no error | single-bit ECC | multi-bit ECC | \
82 single-symbol chipkill ECC | multi-symbol chipkill ECC | master abort | \
101 aer_layer=<aer layer string>, aer_agent=<aer agent string>
106 downstream switch port | PCIe to PCI/PCI-X bridge | \
107 PCI/PCI-X to PCIe bridge | root complex integrated endpoint device | \
121 Replay Timer Timeout | Advisory Non-Fatal
124 <aer layer string> :=
125 Physical Layer | Data Link Layer | Transaction Layer
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| /linux/Documentation/netlink/specs/ |
| H A D | handshake.yaml | 1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
12 doc: Netlink protocol to request a transport layer security handshake.
15 -
17 name: handler-class
18 value-start: 0
20 -
22 name: msg-type
23 value-start: 0
25 -
28 value-start: 0
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| H A D | dpll.yaml | 1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
8 -
16 -
20 -
23 render-max: true
24 -
26 name: lock-status
31 -
37 -
41 -
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| /linux/Documentation/networking/ |
| H A D | iso15765-2.rst | 1 .. SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
4 ISO 15765-2 (ISO-TP)
10 ISO 15765-2, also known as ISO-TP, is a transport protocol specifically defined
12 industry, for example as the transport protocol for UDSonCAN (ISO 14229-3) or
13 emission-related diagnostic services (ISO 15031-5).
15 ISO-TP can be used both on CAN CC (aka Classical CAN) and CAN FD (CAN with
17 CAN network using SAE J1939 as data link layer (however, this is not a
21 -------------------
23 * ISO 15765-2:2024 : Road vehicles - Diagnostic communication over Controller
24 Area Network (DoCAN). Part 2: Transport protocol and network layer services.
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| H A D | can.rst | 2 SocketCAN - Controller Area Network
20 .. _socketcan-motivation:
29 functionality. Usually, there is only a hardware-specific device
32 Queueing of frames and higher-level transport protocols like ISO-TP
34 character-device implementations support only one single process to
43 layer, enabling use all of the provided queueing functionality. A device
45 network layer as a network device, so that CAN frames from the
46 controller can be passed up to the network layer and on to the CAN
47 protocol family module and also vice-versa. Also, the protocol family
57 communicate using a specific transport protocol, e.g. ISO-TP, just
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| H A D | scaling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 multi-processor systems.
17 - RSS: Receive Side Scaling
18 - RPS: Receive Packet Steering
19 - RFS: Receive Flow Steering
20 - Accelerated Receive Flow Steering
21 - XPS: Transmit Packet Steering
28 (multi-queue). On reception, a NIC can send different packets to different
33 generally known as “Receive-side Scaling” (RSS). The goal of RSS and
35 Multi-queue distribution can also be used for traffic prioritization, but
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| /linux/Documentation/devicetree/bindings/display/mediatek/ |
| H A D | mediatek,padding.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11 - Philipp Zabel <p.zabel@pengutronix.de>
14 Padding provides ability to add pixels to width and height of a layer with
16 width of a layer to be 2-pixel-align, or 4-pixel-align when ETHDR is enabled,
24 - mediatek,mt8188-disp-padding
25 - mediatek,mt8195-mdp3-padding
30 power-domains:
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| /linux/Documentation/networking/device_drivers/ethernet/intel/ |
| H A D | fm10k.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
4 Linux Base Driver for Intel(R) Ethernet Multi-host Controller
8 Copyright(c) 2015-2018 Intel Corporation.
12 - Identifying Your Adapter
13 - Additional Configurations
14 - Performance Tuning
15 - Known Issues
16 - Support
21 Ethernet Multi-host Controller.
29 ------------
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| /linux/Documentation/admin-guide/perf/ |
| H A D | hisi-pcie-pmu.rst | 8 Each PCIe Core has a PMU to monitor multi Root Ports of this PCIe Core and
15 The PCIe PMU driver registers a perf PMU with the name of its sicl-id and PCIe
40 ------------------------------------------
42 $# perf stat -e hisi_pcie0_core0/rx_mwr_latency,port=0xffff/
43 $# perf stat -e hisi_pcie0_core0/rx_mwr_cnt,port=0xffff/
56 …$# perf stat -e "{hisi_pcie0_core0/rx_mwr_latency,port=0xffff/,hisi_pcie0_core0/rx_mwr_cnt,port=0x…
62 --------------
75 - port
78 selected by configuring the 16-bits-bitmap "port". Multi ports can be
79 selected for AP-layer-events, and only one port can be selected for
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| /linux/drivers/gpu/drm/sun4i/ |
| H A D | sun4i_backend.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
14 #include <linux/dma-mapping.h>
35 /* backend <-> TCON muxing selection done in backend */
55 regmap_write(engine->regs, SUN4I_BACKEND_OCCTL_REG, in sun4i_backend_apply_color_correction()
59 regmap_write(engine->regs, SUN4I_BACKEND_OCRCOEF_REG(i), in sun4i_backend_apply_color_correction()
68 regmap_update_bits(engine->regs, SUN4I_BACKEND_OCCTL_REG, in sun4i_backend_disable_color_correction()
78 regmap_write(engine->regs, SUN4I_BACKEND_REGBUFFCTL_REG, in sun4i_backend_commit()
84 int layer, bool enable) in sun4i_backend_layer_enable() argument
88 DRM_DEBUG_DRIVER("%sabling layer %d\n", enable ? "En" : "Dis", in sun4i_backend_layer_enable()
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| /linux/Documentation/arch/s390/ |
| H A D | driver-model.rst | 6 --------------
8 All devices which can be addressed by means of ccws are called 'CCW devices' -
15 - system/
16 - css0/
17 - 0.0.0000/0.0.0815/
18 - 0.0.0001/0.0.4711/
19 - 0.0.0002/
20 - 0.1.0000/0.1.1234/
22 - defunct/
25 device 4711 via subchannel 1 in subchannel set 0, and subchannel 2 is a non-I/O
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| /linux/Documentation/staging/ |
| H A D | xz.rst | 1 .. SPDX-License-Identifier: 0BSD
19 For userspace, `XZ Utils`_ provide a zlib-like compression library
20 and a gzip-like command line tool.
28 The xz_dec module provides XZ decompressor with single-call (buffer
29 to buffer) and multi-call (stateful) APIs in include/linux/xz.h.
39 - ``$(call if_changed,xzkern)`` is for compressing the kernel image.
40 It runs the script scripts/xz_wrap.sh which uses arch-optimized
43 - ``$(call if_changed,xzkern_with_size)`` is like ``xzkern`` above but
44 this also appends a four-byte trailer containing the uncompressed size
47 - Other things can be compressed with ``$(call if_needed,xzmisc)``
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| /linux/Documentation/networking/device_drivers/ethernet/amazon/ |
| H A D | ena.rst | 1 .. SPDX-License-Identifier: GPL-2.0
17 The driver supports a range of ENA devices, is link-speed independent
21 Some ENA devices support SR-IOV. This driver is used for both the
22 SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
26 is advertised by the device via the Admin Queue), a dedicated MSI-X
31 checksum offload. Receive-side scaling (RSS) is supported for multi-core
39 Some of the ENA devices support a working mode called Low-latency
46 ena_com.[ch] Management communication layer. This layer is
53 ena_common_defs.h Common definitions for ena_com layer.
54 ena_regs_defs.h Definition of ENA PCI memory-mapped (MMIO) registers.
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| /linux/net/sched/ |
| H A D | em_nbyte.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * net/sched/em_nbyte.c N-Byte ematch
28 data_len < (sizeof(*nbyte) + nbyte->len)) in em_nbyte_change()
29 return -EINVAL; in em_nbyte_change()
31 em->datalen = sizeof(*nbyte) + nbyte->len; in em_nbyte_change()
32 em->data = (unsigned long)kmemdup(data, em->datalen, GFP_KERNEL); in em_nbyte_change()
33 if (em->data == 0UL) in em_nbyte_change()
34 return -ENOMEM; in em_nbyte_change()
42 struct nbyte_data *nbyte = (struct nbyte_data *) em->data; in em_nbyte_match()
43 unsigned char *ptr = tcf_get_base_ptr(skb, nbyte->hdr.layer); in em_nbyte_match()
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| /linux/Documentation/accel/ |
| H A D | introduction.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 accelerators in a common way to user-space and provide a common set of
11 These devices can be either stand-alone ASICs or IP blocks inside an SoC/GPU.
13 Machine-Learning (ML) and/or Deep-Learning (DL) computations, the accel layer
19 - Edge AI - doing inference at an edge device. It can be an embedded ASIC/FPGA,
23 - Inference data-center - single/multi user devices in a large server. This
24 type of device can be stand-alone or an IP inside a SoC or a GPU. It will
25 have on-board DRAM (to hold the DL topology), DMA engines and
26 command submission queues (either kernel or user-space queues).
28 virtualization (SR-IOV) to support multiple VMs on the same device. In
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| /linux/arch/arm/mach-spear/ |
| H A D | spear.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
17 /* ICM1 - Low speed connection */
21 #define VA_SPEAR_ICM1_UART_BASE (VA_SPEAR_ICM1_2_BASE - SPEAR_ICM1_2_BASE + SPEAR_ICM1_UART_BASE)
24 /* ML-1, 2 - Multi Layer CPU Subsystem */
28 /* ICM3 - Basic Subsystem */
33 #define VA_SPEAR_ICM3_SYS_CTRL_BASE (VA_SPEAR_ICM3_SMI_CTRL_BASE - SPEAR_ICM3_SMI_CTRL_BASE + SPEAR…
35 #define VA_SPEAR_ICM3_MISC_REG_BASE (VA_SPEAR_ICM3_SMI_CTRL_BASE - SPEAR_ICM3_SMI_CTRL_BASE + SPEAR…
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| /linux/drivers/atm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
36 chipset such as the Speedstream 3010 and the ENI-25p. The
38 have the code to drive the on-board Alcatel DSL chipset (yet).
46 2MB on-board RAM (Efficient calls them "C" and "S", respectively),
48 The driver works with MMF (-MF or ...F) and UTP-5 (-U5 or ...D)
65 bool "Fine-tune burst settings"
69 multiple words of data per PCI bus access cycle. Such a multi-word
164 Support for the S-UNI and compatible PHYsical layer chips. These are
169 need that capability don't include S-UNI support (it's not needed to
176 Support for the PHYsical layer chip in ForeRunner LE25 cards. In
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| /linux/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/ |
| H A D | counters.rst | 1 .. 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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| /linux/Documentation/fb/ |
| H A D | fbcon.rst | 16 etc. Theoretically, multi-colored fonts, blending, aliasing, and any feature
23 configuration tool. It is under Device Drivers->Graphics Support->
24 Console display driver support->Framebuffer Console Support.
31 always be available. However, using a chipset-specific driver will give you
36 support->Bootup logo.
38 Also, you will need to select at least one compiled-in font, but if
84 compiled-in fonts: 10x18, 6x10, 6x8, 7x14, Acorn8x8, MINI4x6,
112 3. fbcon=vc:<n1>-<n2>
128 - 0 - normal orientation (0 degree)
129 - 1 - clockwise orientation (90 degrees)
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| H A D | viafb.rst | 6 --------
15 ---------------
34 ----------------------
47 - 640x480 (default)
48 - 720x480
49 - 800x600
50 - 1024x768
53 - 8, 16, 32 (default:32)
56 - 60, 75, 85, 100, 120 (default:60)
59 - 0 : expansion (default)
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| /linux/Documentation/userspace-api/ioctl/ |
| H A D | cdrom.rst | 5 - Edward A. Falk <efalk@google.com>
10 the CDROM layer. These are by-and-large implemented (as of Linux 2.6)
33 CDROMEJECT_SW enable(1)/disable(0) auto-ejecting
34 CDROMMULTISESSION Obtain the start-of-last-session
35 address of multi session disks
40 CDROMRESET hard-reset the drive
47 CDROMPLAYBLK scsi-cd only, (struct cdrom_blk)
49 CDROMGETSPINDOWN return 4-bit spindown value
50 CDROMSETSPINDOWN set 4-bit spindown value
54 CDROM_SELECT_SPEED Set the CD-ROM speed
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