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/linux/tools/testing/selftests/livepatch/
H A Dtest-callbacks.sh2 # SPDX-License-Identifier: GPL-2.0
19 # - On livepatch enable, before the livepatch transition starts,
20 # pre-patch callbacks are executed for vmlinux and $MOD_TARGET (those
22 # according to the klp_patch, their post-patch callbacks run and the
25 # - Similarly, on livepatch disable, pre-patch callbacks run before the
26 # unpatching transition starts. klp_objects are reverted, post-patch
43 $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state
47 $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state
52 $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state
56 $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state
[all …]
/linux/Documentation/livepatch/
H A Dcallbacks.rst5 Livepatch (un)patch-callbacks provide a mechanism for livepatch modules
10 - Safe updates to global data
12 - "Patches" to init and probe functions
14 - Patching otherwise unpatchable code (i.e. assembly)
25 - Module init/exit code doesn't run when disabling and re-enabling a
28 - A module notifier can't stop a to-be-patched module from loading.
39 * Pre-patch
40 - before a klp_object is patched
42 * Post-patch
43 - after a klp_object has been patched and is active
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/linux/Documentation/devicetree/bindings/power/supply/
H A Drichtek,rt5033-charger.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/supply/richtek,rt5033-charger.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jakob Hauser <jahau@rocketmail.com>
14 under sub-node named "charger" using the following format.
18 const: richtek,rt5033-charger
20 monitored-battery:
25 precharge-current-microamp:
26 Current of pre-charge mode. The pre-charge current levels are 350 mA
[all …]
/linux/Documentation/netlink/specs/
H A Ddpll.yaml1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
2 ---
8 -
13 one of its inputs to syntonize with it, valid values for DPLL_A_MODE
16 -
20 -
23 render-max: true
24 -
26 name: lock-status
31 -
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H A Dovpn.yaml1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
5 # Copyright (c) 2024-2025, OpenVPN Inc.
7 ---
15 -
17 name: nonce-tail-size
19 -
21 name: cipher-alg
22 entries: [none, aes-gcm, chacha20-poly1305]
23 -
25 name: del-peer-reason
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/linux/tools/perf/pmu-events/arch/arm64/fujitsu/a64fx/
H A Dinstruction.json72 … "PublicDescription": "This event counts architecturally executed floating-point move operations.",
75 "BriefDescription": "This event counts architecturally executed floating-point move operations."
84 …"PublicDescription": "This event counts architecturally executed inter-element manipulation operat…
87 …"BriefDescription": "This event counts architecturally executed inter-element manipulation operati…
90 …"PublicDescription": "This event counts architecturally executed inter-register manipulation opera…
93 …"BriefDescription": "This event counts architecturally executed inter-register manipulation operat…
108 …"PublicDescription": "This event counts architecturally executed SIMD broadcast floating-point loa…
111 …"BriefDescription": "This event counts architecturally executed SIMD broadcast floating-point load…
120 …: "This event counts architecturally executed operations that uses 'pre-index' as its addressing m…
123 …: "This event counts architecturally executed operations that uses 'pre-index' as its addressing m…
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/linux/drivers/clk/bcm/
H A Dclk-kona.c1 // SPDX-License-Identifier: GPL-2.0-only
7 #include "clk-kona.h"
12 #include <linux/clk-provider.h>
28 /* Produces a mask of set bits covering a range of a 32-bit value */
31 return ((1 << width) - 1) << shift; in bitfield_mask()
53 return (u64)reg_div + ((u64)1 << div->u.s.frac_width); in scaled_div_value()
61 return (u64)div->u.fixed; in scaled_div_min()
72 return (u64)div->u.fixed; in scaled_div_max()
74 reg_div = ((u32)1 << div->u.s.width) - 1; in scaled_div_max()
80 * Convert a scaled divisor into its divider representation as
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/linux/Documentation/scsi/
H A Dlpfc.rst1 .. SPDX-License-Identifier: GPL-2.0
12 (pre 2.6.10). The 8.0.16 release should be used if the driver is to be
20 The driver now requires a 2.6.12 (if pre-release, 2.6.12-rc1) or later
33 jitter, or a device temporarily loses connectivity (due to its cable
39 errored by the driver, the mid-layer would exhaust its retries, and the
41 re-enable the device.
56 The proposed patch was posted to the linux-scsi mailing list. The patch
57 is contained in the 2.6.10-rc2 (and later) patch kits. As such, this
71 At this time, the driver requires the 2.6.12 (if pre-release, 2.6.12-rc1)
/linux/arch/arm64/boot/dts/amd/
H A Delba.dtsi1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 * Copyright 2020-2022 Advanced Micro Devices, Inc.
6 #include <dt-bindings/gpio/gpio.h>
7 #include "dt-bindings/interrupt-controller/arm-gic.h"
11 compatible = "amd,pensando-elba";
12 interrupt-parent = <&gic>;
13 #address-cells = <2>;
14 #size-cells = <2>;
16 dma-coherent;
19 compatible = "fixed-clock";
[all …]
/linux/drivers/ntb/hw/idt/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "IDT PCIe-switch Non-Transparent Bridge support"
7 This driver supports NTB of capable IDT PCIe-switches.
9 Some of the pre-initializations must be made before IDT PCIe-switch
10 exposes its NT-functions correctly. It should be done by either proper
12 by BIOS using slave-SMBus interface changing corresponding registers
17 the ports with NT-functions intended to be activated (see SWPARTxCTL
18 and SWPORTxCTL registers). Then all NT-function BARs must be enabled
25 BAR settings of peer NT-functions, the BAR setups can't be done over
26 kernel PCI fixups. That's why the alternative pre-initialization
/linux/Documentation/devicetree/bindings/hwmon/
H A Dmoortec,mr75203.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rahul Tanwar <rtanwar@maxlinear.com>
19 *) Temperature Sensor (TS) - used to monitor core temperature (e.g. mr74137).
20 *) Voltage Monitor (VM) - used to monitor voltage levels (e.g. mr74138).
21 *) Process Detector (PD) - used to assess silicon speed (e.g. mr74139).
22 *) Delay Chain - ring oscillator connected to the PD, used to measure IO
25 *) Pre Scaler - provides divide-by-X scaling of input voltage, which can then
26 be presented for VM for measurement within its range (e.g. mr76006 -
[all …]
/linux/Documentation/driver-api/media/
H A Ddtv-frontend.rst1 .. SPDX-License-Identifier: GPL-2.0
4 ------------------------
9 The Digital TV Frontend kABI defines a driver-internal interface for
10 registering low-level, hardware specific driver to a hardware independent
29 .name = "foo DVB-T/T2/C driver",
70 .name = "Bar DVB-S/S2 demodulator",
91 /* Satellite-specific */
100 #) For satellite digital TV standards (DVB-S, DVB-S2, ISDB-S), the
128 doesn't fill its field at struct dvb_frontend_ops, it will default to
129 ``DVBFE_ALGO_SW``, meaning that the dvb-core will do a zigzag when tuning,
[all …]
/linux/Documentation/devicetree/bindings/interrupt-controller/
H A Darm,gic-v3.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/arm,gic-v3.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marc Zyngier <maz@kernel.org>
15 Software Generated Interrupts (SGI), and Locality-specific Peripheral
19 - $ref: /schemas/interrupt-controller.yaml#
24 - items:
25 - enum:
26 - qcom,msm8996-gic-v3
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/linux/tools/testing/selftests/tc-testing/
H A DTODO.txt1 tc Testing Suite To-Do list:
3 - Determine what tc features are supported in the kernel. If features are not
6 - Add support for multiple versions of tc to run successively
8 - Improve error messages when tdc aborts its run. Partially done - still
9 need to better handle problems in pre- and post-suite.
11 - Use python logger module for debug/verbose output
13 - Allow tdc to write its results to file.
16 - A better implementation of the "hooks". Currently, every plugin
23 - Proper exception handling - make an exception class and use it
25 - a TestCase class, for easier testcase handling, searching, comparison
[all …]
/linux/Documentation/devicetree/bindings/phy/
H A Dapm,xgene-phy.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/phy/apm,xgene-phy.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: APM X-Gene 15Gbps Multi-purpose PHY
10 - Khuong Dinh <khuong@os.amperecomputing.com>
13 PHY nodes are defined to describe on-chip 15Gbps Multi-purpose PHY. Each
14 PHY (pair of lanes) has its own node.
19 - const: apm,xgene-phy
24 '#phy-cells':
[all …]
/linux/Documentation/arch/x86/
H A Dshstk.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Control-flow Enforcement Technology (CET) Shadow Stack
10 Control-flow Enforcement Technology (CET) covers several related x86 processor
20 control-protection fault. IBT verifies indirect CALL/JMP targets are intended
22 Stack and Indirect Branch Tracking. Today in the 64-bit kernel, only userspace
44 An application's CET capability is marked in its ELF note and can be verified
45 from readelf/llvm-readelf output::
47 readelf -n <application> | grep -a SHSTK
60 on a per-thread basis. The enablement status is inherited on clone, so if the
90 -EPERM if any of the passed feature are locked.
[all …]
/linux/Documentation/networking/device_drivers/ethernet/ti/
H A Dicssg_prueth.rst1 .. SPDX-License-Identifier: GPL-2.0
12 Every ICSSG core has two Programmable Real-Time Unit(PRUs), two auxiliary
13 Real-Time Transfer Unit (RTUs), and two Transmit Real-Time Transfer Units
14 (TX_PRUs). Each one of these runs its own firmware. The firmwares combnined are
21 via ``ethtool -S <interface>``
25 …- ``FW_RTU_PKT_DROP``: Diagnostic error counter which increments when RTU drops a locally injected…
26 - ``FW_Q0_OVERFLOW``: TX overflow counter for queue0
27 - ``FW_Q1_OVERFLOW``: TX overflow counter for queue1
28 - ``FW_Q2_OVERFLOW``: TX overflow counter for queue2
29 - ``FW_Q3_OVERFLOW``: TX overflow counter for queue3
[all …]
/linux/Documentation/admin-guide/
H A Dinit.rst6 This document provides some high-level reasons for failure
16 modules, to be pre-loaded by an initrd).
19 --> initial console unavailable. E.g. some serial consoles are unreliable
20 due to serial IRQ issues (e.g. missing interrupt-based configuration).
24 dependencies of the init binary such as ``/lib/ld-linux.so.2`` missing or
25 broken. Use ``readelf -d <INIT>|grep NEEDED`` to find out which libraries
30 hardware. In case you tried loading a non-binary file here (shell script?),
31 you should make sure that the script specifies an interpreter in its
32 shebang header line (``#!/...``) that is fully working (including its
34 simple non-script binary such as ``/bin/sh`` and confirm its successful
[all …]
H A Dquickly-build-trimmed-linux.rst1 .. SPDX-License-Identifier: (GPL-2.0+ OR CC-BY-4.0)
9 testing purposes, but perfectly fine for day-to-day use, too.
15 section below: it contains a step-by-step guide, which is more detailed, but
16 still brief and easy to follow; that guide and its accompanying reference
21 self-compiled Linux kernels; install compilers and everything else needed for
26 git clone --depth 1 -b master \
34 make -j $(nproc --all)
36 # Linux, its derivatives, and some others it does not. See below for details.
37 command -v installkernel && sudo make modules_install install
43 git fetch --depth 1 origin
[all …]
/linux/Documentation/driver-api/pm/
H A Ddevices.rst1 .. SPDX-License-Identifier: GPL-2.0
10 :Copyright: |copy| 2010-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
18 management (PM) code is also driver-specific. Most drivers will do very
22 This writeup gives an overview of how drivers interact with system-wide
25 background for the domain-specific work you'd do with any specific driver.
31 Drivers will use one or both of these models to put devices into low-power
36 Drivers can enter low-power states as part of entering system-wide
37 low-power states like "suspend" (also known as "suspend-to-RAM"), or
39 "suspend-to-disk").
42 by implementing various role-specific suspend and resume methods to
[all …]
/linux/arch/x86/kvm/mmu/
H A Dtdp_iter.c1 // SPDX-License-Identifier: GPL-2.0
14 iter->sptep = iter->pt_path[iter->level - 1] + in tdp_iter_refresh_sptep()
15 SPTE_INDEX((iter->gfn | iter->gfn_bits) << PAGE_SHIFT, iter->level); in tdp_iter_refresh_sptep()
16 iter->old_spte = kvm_tdp_mmu_read_spte(iter->sptep); in tdp_iter_refresh_sptep()
20 * Return the TDP iterator to the root PT and allow it to continue its
25 iter->yielded = false; in tdp_iter_restart()
26 iter->yielded_gfn = iter->next_last_level_gfn; in tdp_iter_restart()
27 iter->level = iter->root_level; in tdp_iter_restart()
29 iter->gfn = gfn_round_for_level(iter->next_last_level_gfn, iter->level); in tdp_iter_restart()
32 iter->valid = true; in tdp_iter_restart()
[all …]
/linux/block/
H A Dblk-pm.c1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/blk-pm.h>
6 #include "blk-mq.h"
9 * blk_pm_runtime_init - Block layer runtime PM initialization routine
14 * Initialize runtime-PM-related fields for @q and start auto suspend for
15 * @dev. Drivers that want to take advantage of request-based runtime PM
16 * should call this function after @dev has been initialized, and its
18 * yet(either due to disabled/forbidden or its usage_count > 0). In most
22 * the autosuspend delay is set to -1 to make runtime suspend impossible
31 q->dev = dev; in blk_pm_runtime_init()
[all …]
/linux/Documentation/power/
H A Dpci.rst13 power management refer to Documentation/driver-api/pm/devices.rst and
27 1.1. Native and Platform-Based Power Management
28 -----------------------------------------------
31 devices into states in which they draw less power (low-power states) at the
34 Usually, a device is put into a low-power state when it is underutilized or
36 again, it has to be put back into the "fully functional" state (full-power
41 PCI devices may be put into low-power states in two ways, by using the device
46 specific value into one of its standard configuration registers. The second
53 to put the device that sent it into the full-power state. However, the PCI Bus
68 Thus in many situations both the native and the platform-based power management
[all …]
/linux/Documentation/admin-guide/media/
H A Dimx.rst1 .. SPDX-License-Identifier: GPL-2.0
7 ------------
15 - Image DMA Controller (IDMAC)
16 - Camera Serial Interface (CSI)
17 - Image Converter (IC)
18 - Sensor Multi-FIFO Controller (SMFC)
19 - Image Rotator (IRT)
20 - Video De-Interlacing or Combining Block (VDIC)
26 re-ordering (for example UYVY to YUYV) within the same colorspace, and
27 packed <--> planar conversion. The IDMAC can also perform a simple
[all …]
/linux/Documentation/driver-api/nvdimm/
H A Dbtt.rst2 BTT - Block Translation Table
14 using stored energy in capacitors to complete in-flight block writes, or perhaps
15 in firmware. We don't have this luxury with persistent memory - if a write is in
22 device, and reserves a portion of the underlying storage for its metadata. At
23 the heart of it, is an indirection table that re-maps all the blocks on the
35 Each arena follows the same layout for its metadata, and all references in an
37 next arena). The following depicts the "On-disk" metadata layout::
40 Backing Store +-------> Arena
41 +---------------+ | +------------------+
43 | Arena 0 +---+ | 4K |
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