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/Documentation/devicetree/bindings/power/reset/
Datmel,at91sam9260-shdwc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/atmel,at91sam9260-shdwc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Claudiu Beznea <claudiu.beznea@microchip.com>
14 and VDDCORE and the wake-up detection on debounced input lines.
19 - atmel,at91sam9260-shdwc
20 - atmel,at91sam9rl-shdwc
21 - atmel,at91sam9x5-shdwc
29 atmel,wakeup-mode:
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/Documentation/devicetree/bindings/mfd/
Dst,stm32-lptimer.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mfd/st,stm32-lptimer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 Low-Power Timers
10 The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several
12 - PWM output (with programmable prescaler, configurable polarity)
13 - Trigger source for STM32 ADC/DAC (LPTIM_OUT)
14 - Several counter modes:
15 - quadrature encoder to detect angular position and direction of rotary
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/Documentation/devicetree/bindings/timer/
Dspreadtrum,sprd-timer.txt3 The Spreadtrum SC9860 platform provides 3 general-purpose timers.
4 These timers can support 32bit or 64bit counter, as well as supporting
5 period mode or one-shot mode, and they are can be wakeup source
9 - compatible: should be "sprd,sc9860-timer" for SC9860 platform.
10 - reg: The register address of the timer device.
11 - interrupts: Should contain the interrupt for the timer device.
12 - clocks: The phandle to the source clock (usually a 32.768 KHz fixed clock).
16 compatible = "sprd,sc9860-timer";
/Documentation/driver-api/usb/
Dpower-management.rst1 .. _usb-power-management:
7 :Date: Last-updated: February 2014
11 ---------
13 * What is Remote Wakeup?
17 * Changing the default idle-delay time
31 -------------------------
35 component is ``suspended`` it is in a nonfunctional low-power state; it
37 ``resumed`` (returned to a functional full-power state) when the kernel
66 What is Remote Wakeup?
67 ----------------------
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/Documentation/power/
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
50 Devices supporting the native PCI PM usually can generate wakeup signals called
53 to put the device that sent it into the full-power state. However, the PCI Bus
63 preparing the device to generate wakeup signals. In that case, however, it
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Druntime_pm.rst5 (C) 2009-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
18 put their PM-related work items. It is strongly recommended that pm_wq be
20 them to be synchronized with system-wide power transitions (suspend to RAM,
53 The ->runtime_suspend(), ->runtime_resume() and ->runtime_idle() callbacks
57 1. PM domain of the device, if the device's PM domain object, dev->pm_domain,
60 2. Device type of the device, if both dev->type and dev->type->pm are present.
62 3. Device class of the device, if both dev->class and dev->class->pm are
65 4. Bus type of the device, if both dev->bus and dev->bus->pm are present.
69 dev->driver->pm directly (if present).
73 and bus type. Moreover, the high-priority one will always take precedence over
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/Documentation/RCU/Design/Expedited-Grace-Periods/
DExpedited-Grace-Periods.rst13 There are two flavors of RCU (RCU-preempt and RCU-sched), with an earlier
14 third RCU-bh flavor having been implemented in terms of the other two.
38 RCU-preempt Expedited Grace Periods
41 ``CONFIG_PREEMPTION=y`` kernels implement RCU-preempt.
42 The overall flow of the handling of a given CPU by an RCU-preempt
45 .. kernel-figure:: ExpRCUFlow.svg
59 can check to see if the CPU is currently running in an RCU read-side
63 invocation will provide the needed quiescent-state report.
64 This flag-setting avoids the previous forced preemption of all
65 CPUs that might have RCU read-side critical sections.
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/Documentation/devicetree/bindings/usb/
Dsnps,dwc3.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Felipe Balbi <balbi@kernel.org>
14 be presented as a standalone DT node with an optional vendor-specific
18 - $ref: usb-drd.yaml#
19 - if:
25 - dr_mode
29 $ref: usb-xhci.yaml#
35 - const: snps,dwc3
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/Documentation/RCU/
Dstallwarn.rst1 .. SPDX-License-Identifier: GPL-2.0
9 options that can be used to fine-tune the detector's operation. Finally,
20 - A CPU looping in an RCU read-side critical section.
22 - A CPU looping with interrupts disabled.
24 - A CPU looping with preemption disabled.
26 - A CPU looping with bottom halves disabled.
28 - For !CONFIG_PREEMPTION kernels, a CPU looping anywhere in the
33 - Booting Linux using a console connection that is too slow to
34 keep up with the boot-time console-message rate. For example,
36 with boot-time message rates, and will frequently result in
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/Documentation/admin-guide/thermal/
Dintel_powerclamp.rst6 - Arjan van de Ven <arjan@linux.intel.com>
7 - Jacob Pan <jacob.jun.pan@linux.intel.com>
12 - Goals and Objectives
15 - Idle Injection
16 - Calibration
19 - Effectiveness and Limitations
20 - Power vs Performance
21 - Scalability
22 - Calibration
23 - Comparison with Alternative Techniques
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/Documentation/trace/
Dftrace.rst2 ftrace - Function Tracer
13 - Written for: 2.6.28-rc2
14 - Updated for: 3.10
15 - Updated for: 4.13 - Copyright 2017 VMware Inc. Steven Rostedt
16 - Converted to rst format - Changbin Du <changbin.du@intel.com>
19 ------------
24 performance issues that take place outside of user-space.
41 ----------------------
43 See Documentation/trace/ftrace-design.rst for details for arch porters and such.
47 ---------------
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Dhistogram-design.rst1 .. SPDX-License-Identifier: GPL-2.0
20 generally be truncated - only enough to make the point is displayed.
35 can do with histograms - create one with a single key on a single
63 The hitcount value is a per-bucket value that's automatically
86 (in most cases - some hist_fields such as hitcount don't directly map
87 to an event field in the trace buffer - in these cases the function
89 indicates which type of field it is - key, value, variable, variable
95 lock-free hash table used to implement histograms (see
97 low-level data structures implementing the tracing_map). For the
107 Below that is a diagram of a run-time snapshot of what the tracing_map
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/Documentation/RCU/Design/Memory-Ordering/
DTree-RCU-Memory-Ordering.rst2 A Tour Through TREE_RCU's Grace-Period Memory Ordering
13 grace-period memory ordering guarantee is provided.
18 RCU grace periods provide extremely strong memory-ordering guarantees
19 for non-idle non-offline code.
22 period that are within RCU read-side critical sections.
25 of that grace period that are within RCU read-side critical sections.
27 Note well that RCU-sched read-side critical sections include any region
30 an extremely small region of preemption-disabled code, one can think of
37 a linked RCU-protected data structure, and phase two frees that element.
39 phase-one update (in the common case, removal) must not witness state
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/Documentation/scheduler/
Dsched-util-clamp.rst1 .. SPDX-License-Identifier: GPL-2.0
57 foreground, top-app, etc. Util clamp can be used to constrain how much
60 the ones belonging to the currently active app (top-app group). Beside this
65 1. The big cores are free to run top-app tasks immediately. top-app
106 Note that by design RT tasks don't have per-task PELT signal and must always
114 See :ref:`section 3.4 <uclamp-default-values>` for default values and
115 :ref:`3.4.1 <sched-util-clamp-min-rt-default>` on how to change RT tasks
150 task on the rq to only a subset of tasks on the top-most bucket.
152 When a task is enqueued, the counter in the matching bucket is incremented,
157 uclamp value of the rq. See :ref:`section 2.1 <uclamp-buckets>` for details on
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/Documentation/admin-guide/sysctl/
Dvm.rst13 ------------------------------------------------------------------------------
27 - admin_reserve_kbytes
28 - compact_memory
29 - compaction_proactiveness
30 - compact_unevictable_allowed
31 - dirty_background_bytes
32 - dirty_background_ratio
33 - dirty_bytes
34 - dirty_expire_centisecs
35 - dirty_ratio
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/Documentation/virt/kvm/
Dapi.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The Definitive KVM (Kernel-based Virtual Machine) API Documentation
13 - System ioctls: These query and set global attributes which affect the
17 - VM ioctls: These query and set attributes that affect an entire virtual
24 - vcpu ioctls: These query and set attributes that control the operation
32 - device ioctls: These query and set attributes that control the operation
80 facility that allows backward-compatible extensions to the API to be
104 the ioctl returns -ENOTTY.
122 -----------------------
139 -----------------
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/Documentation/
Dmemory-barriers.txt19 documentation at tools/memory-model/. Nevertheless, even this memory
37 Note also that it is possible that a barrier may be a no-op for an
48 - Device operations.
49 - Guarantees.
53 - Varieties of memory barrier.
54 - What may not be assumed about memory barriers?
55 - Address-dependency barriers (historical).
56 - Control dependencies.
57 - SMP barrier pairing.
58 - Examples of memory barrier sequences.
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/Documentation/admin-guide/
Dkernel-parameters.txt5 force -- enable ACPI if default was off
6 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
7 off -- disable ACPI if default was on
8 noirq -- do not use ACPI for IRQ routing
9 strict -- Be less tolerant of platforms that are not
11 rsdt -- prefer RSDT over (default) XSDT
12 copy_dsdt -- copy DSDT to memory
26 If set to vendor, prefer vendor-specific driver
58 Documentation/firmware-guide/acpi/debug.rst for more information about
116 Format: <byte> or <bitmap-list>
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/Documentation/scsi/
DChangeLog.lpfc2 * Please read the associated RELEASE-NOTES file !!!
8 * Fixed build warning for 2.6.12-rc2 kernels: mempool_alloc now
19 * Removed FC_TRANSPORT_PATCHESxxx defines. They're in 2.6.12-rc1.
26 * Added PCI ID for LP10000-S.
31 * Zero-out response sense length in lpfc_scsi_prep_cmnd to prevent
33 - was causing spurious 0710 messages.
55 - stop using volatile. if you need special ordering use memory
57 - switch lpfc_sli_pcimem_bcopy to take void * arguments.
58 - remove typecast for constants - a U postfix marks them
60 - add a MAILBOX_CMD_SIZE macro, as most users of
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