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/Documentation/devicetree/bindings/timer/
Darm,arch_timer.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marc Zyngier <marc.zyngier@arm.com>
11 - Mark Rutland <mark.rutland@arm.com>
13 ARM cores may have a per-core architected timer, which provides per-cpu timers,
17 The per-core architected timer is attached to a GIC to deliver its
18 per-processor interrupts via PPIs. The memory mapped timer is attached to a GIC
24 - items:
25 - enum:
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Darm,arch_timer_mmio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marc Zyngier <marc.zyngier@arm.com>
11 - Mark Rutland <mark.rutland@arm.com>
22 - enum:
23 - arm,armv7-timer-mem
29 '#address-cells':
32 '#size-cells':
35 clock-frequency:
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/Documentation/timers/
Dhighres.rst5 Further information can be found in the paper of the OLS 2006 talk "hrtimers
8 https://www.kernel.org/doc/ols/2006/ols2006v1-pages-333-346.pdf
11 http://www.cs.columbia.edu/~nahum/w6998/papers/ols2006-hrtimers-slides.pdf
14 changes in the time(r) related Linux subsystems. Figure #1 (p. 2) shows the
19 switched to the name "clock event devices" in meantime.
23 - hrtimer base infrastructure
24 - timeofday and clock source management
25 - clock event management
26 - high resolution timer functionality
27 - dynamic ticks
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/Documentation/driver-api/pm/
Dcpuidle.rst1 .. SPDX-License-Identifier: GPL-2.0
21 Every time one of the logical CPUs in the system (the entities that appear to
24 there are no tasks to run on it except for the special "idle" task associated
28 depended on by it into an idle state in which they will draw less power.
30 However, there may be multiple different idle states that can be used in such a
31 situation in principle, so it may be necessary to find the most suitable one
34 subsystem in the kernel, called ``CPUIdle``.
37 principle, so the generic code that in principle need not depend on the hardware
38 or platform design details in it is separate from the code that interacts with
49 one of the logical CPUs in the system turns out to be idle. Its role is to
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/Documentation/ABI/testing/
Dsysfs-devices-system-cpu2 Date: pre-git history
3 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
7 Individual CPU attributes are contained in subdirectories
18 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
34 present: cpus that have been identified as being present in
37 See Documentation/admin-guide/cputopology.rst for more information.
43 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
58 Contact: Linux memory management mailing list <linux-mm@kvack.org>
65 in NUMA node 2:
67 /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2
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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]
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
49 debug output. Bits in debug_layer correspond to a
50 _COMPONENT in an ACPI source file, e.g.,
52 Bits in debug_level correspond to a level in
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/Documentation/sound/kernel-api/
Dwriting-an-alsa-driver.rst11 Architecture) <http://www.alsa-project.org/>`__ driver. The document
12 focuses mainly on PCI soundcards. In the case of other device types, the
19 low-level driver implementation details. It only describes the standard
29 -------
61 --------------
64 drivers. In this directory, the native ALSA modules are stored. The
65 sub-directories contain different modules and are dependent upon the
71 The codes for PCM and mixer OSS emulation modules are stored in this
72 directory. The rawmidi OSS emulation is included in the ALSA rawmidi
73 code since it's quite small. The sequencer code is stored in
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