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| /kernel/linux/linux-4.19/Documentation/driver-api/pm/ |
| D | devices.rst | 15 Copyright (c) 2010-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
20 management (PM) code is also driver-specific. Most drivers will do very
24 This writeup gives an overview of how drivers interact with system-wide
27 background for the domain-specific work you'd do with any specific driver.
33 Drivers will use one or both of these models to put devices into low-power
36 System Sleep model:
38 Drivers can enter low-power states as part of entering system-wide
39 low-power states like "suspend" (also known as "suspend-to-RAM"), or
41 "suspend-to-disk").
44 by implementing various role-specific suspend and resume methods to
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| /kernel/linux/linux-5.10/Documentation/driver-api/pm/ |
| D | devices.rst | 1 .. 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
34 System Sleep model:
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").
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| /kernel/linux/linux-5.10/tools/perf/Documentation/ |
| D | perf-stat.txt | 1 perf-stat(1)
5 ----
6 perf-stat - Run a command and gather performance counter statistics
9 --------
11 'perf stat' [-e <EVENT> | --event=EVENT] [-a] <command>
12 'perf stat' [-e <EVENT> | --event=EVENT] [-a] -- <command> [<options>]
13 'perf stat' [-e <EVENT> | --event=EVENT] [-a] record [-o file] -- <command> [<options>]
14 'perf stat' report [-i file]
17 -----------
23 -------
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| /kernel/linux/linux-4.19/Documentation/scsi/ |
| D | advansys.txt | 1 AdvanSys (Advanced System Products, Inc.) manufactures the following
2 RISC-based, Bus-Mastering, Fast (10 Mhz) and Ultra (20 Mhz) Narrow
3 (8-bit transfer) SCSI Host Adapters for the ISA, EISA, VL, and PCI
4 buses and RISC-based, Bus-Mastering, Ultra (20 Mhz) Wide (16-bit
15 ABP-480 - Bus-Master CardBus (16 CDB)
18 ABP510/5150 - Bus-Master ISA (240 CDB)
19 ABP5140 - Bus-Master ISA PnP (16 CDB)
20 ABP5142 - Bus-Master ISA PnP with floppy (16 CDB)
21 ABP902/3902 - Bus-Master PCI (16 CDB)
22 ABP3905 - Bus-Master PCI (16 CDB)
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| D | FlashPoint.txt | 7 MYLEX INTRODUCES LINUX OPERATING SYSTEM SUPPORT FOR ITS
11 FREMONT, CA, -- October 8, 1996 -- Mylex Corporation has expanded Linux
12 operating system support to its BusLogic brand of FlashPoint Ultra SCSI
14 MultiMaster line, currently support the Linux operating system. Linux
24 The Linux Operating System
26 Linux is a freely-distributed implementation of UNIX for Intel x86, Sun
28 machines. It supports a wide range of software, including the X Window
29 System, Emacs, and TCP/IP networking. Further information is available at
35 and file server environments, are available in narrow, wide, dual channel,
36 and dual channel wide versions. These adapters feature SeqEngine
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| D | BusLogic.txt | 14 Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
49 BT-948/958/958D, will always be available from my Linux Home Page at URL
54 driver and SCSI subsystem at startup, along with any subsequent system messages
55 relevant to SCSI operations, and a detailed description of your system's
61 the BT-948 PCI Ultra SCSI Host Adapter, and then again for the BT-958 PCI Wide
82 94555, USA and can be reached at 510/796-6100 or on the World Wide Web at
84 mail at techsup@mylex.com, by Voice at 510/608-2400, or by FAX at 510/745-7715.
93 During system initialization, the driver reports extensively on the host
96 Synchronous Negotiation, Wide Negotiation, and Disconnect/Reconnect are
106 adapter will attempt to negotiate for 20.0 mega-transfers/second.
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| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | suspend-flows.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 System Suspend Code Flows
12 At least one global system-wide transition needs to be carried out for the
13 system to get from the working state into one of the supported
14 :doc:`sleep states <sleep-states>`. Hibernation requires more than one
16 referred to as *system-wide suspend* (or simply *system suspend*) states, need
19 For those sleep states, the transition from the working state of the system into
20 the target sleep state is referred to as *system suspend* too (in the majority
21 of cases, whether this means a transition or a sleep state of the system should
23 working state is referred to as *system resume*.
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| D | strategies.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 The Linux kernel supports two major high-level power management strategies.
15 One of them is based on using global low-power states of the whole system in
16 which user space code cannot be executed and the overall system activity is
17 significantly reduced, referred to as :doc:`sleep states <sleep-states>`. The
18 kernel puts the system into one of these states when requested by user space
19 and the system stays in it until a special signal is received from one of
21 user space code can run. Because sleep states are global and the whole system
23 :doc:`system-wide power management <system-wide>`.
25 The other strategy, referred to as the :doc:`working-state power management
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| /kernel/linux/linux-5.10/Documentation/scsi/ |
| D | advansys.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 AdvanSys (Advanced System Products, Inc.) manufactures the following
8 RISC-based, Bus-Mastering, Fast (10 Mhz) and Ultra (20 Mhz) Narrow
9 (8-bit transfer) SCSI Host Adapters for the ISA, EISA, VL, and PCI
10 buses and RISC-based, Bus-Mastering, Ultra (20 Mhz) Wide (16-bit
21 - ABP-480 - Bus-Master CardBus (16 CDB)
24 - ABP510/5150 - Bus-Master ISA (240 CDB)
25 - ABP5140 - Bus-Master ISA PnP (16 CDB)
26 - ABP5142 - Bus-Master ISA PnP with floppy (16 CDB)
27 - ABP902/3902 - Bus-Master PCI (16 CDB)
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| D | FlashPoint.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 MYLEX INTRODUCES LINUX OPERATING SYSTEM SUPPORT FOR ITS
17 FREMONT, CA, -- October 8, 1996 -- Mylex Corporation has expanded Linux
18 operating system support to its BusLogic brand of FlashPoint Ultra SCSI
20 MultiMaster line, currently support the Linux operating system. Linux
30 The Linux Operating System
33 Linux is a freely-distributed implementation of UNIX for Intel x86, Sun
35 machines. It supports a wide range of software, including the X Window
36 System, Emacs, and TCP/IP networking. Further information is available at
43 and file server environments, are available in narrow, wide, dual channel,
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| D | BusLogic.rst | 1 .. SPDX-License-Identifier: GPL-2.0
21 Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
57 BT-948/958/958D, will always be available from my Linux Home Page at URL
62 driver and SCSI subsystem at startup, along with any subsequent system messages
63 relevant to SCSI operations, and a detailed description of your system's
69 the BT-948 PCI Ultra SCSI Host Adapter, and then again for the BT-958 PCI Wide
90 94555, USA and can be reached at 510/796-6100 or on the World Wide Web at
92 mail at techsup@mylex.com, by Voice at 510/608-2400, or by FAX at 510/745-7715.
101 -----------------------------------
103 During system initialization, the driver reports extensively on the host
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| /kernel/linux/linux-5.10/certs/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
16 certificate as described in Documentation/admin-guide/module-signing.rst
19 bool "Provide system-wide ring of trusted keys"
23 Provide a system keyring to which trusted keys can be added. Keys in
25 by the kernel from compiled-in data and from hardware key stores, but
32 string "Additional X.509 keys for default system keyring"
35 If set, this option should be the filename of a PEM-formatted file
37 system keyring. Any certificate used for module signing is implicitly
40 NOTE: If you previously provided keys for the system keyring in the
41 form of DER-encoded *.x509 files in the top-level build directory,
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| /kernel/linux/linux-5.10/tools/perf/arch/arm64/util/ |
| D | tsc.c | 1 // SPDX-License-Identifier: GPL-2.0
13 * system counter is at least 56 bits wide; from Armv8.6, the counter in rdtsc()
14 * must be 64 bits wide. So the system counter could be less than 64 in rdtsc()
15 * bits wide and it is attributed with the flag 'cap_user_time_short' in rdtsc()
|
| /kernel/linux/linux-4.19/tools/perf/Documentation/ |
| D | perf-stat.txt | 1 perf-stat(1)
5 ----
6 perf-stat - Run a command and gather performance counter statistics
9 --------
11 'perf stat' [-e <EVENT> | --event=EVENT] [-a] <command>
12 'perf stat' [-e <EVENT> | --event=EVENT] [-a] -- <command> [<options>]
13 'perf stat' [-e <EVENT> | --event=EVENT] [-a] record [-o file] -- <command> [<options>]
14 'perf stat' report [-i file]
17 -----------
23 -------
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| /kernel/linux/linux-5.10/include/linux/ |
| D | suspend.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
100 * struct platform_suspend_ops - Callbacks for managing platform dependent
101 * system sleep states.
103 * @valid: Callback to determine if given system sleep state is supported by
106 * that it still may be impossible to enter given system sleep state if the
111 * @begin: Initialise a transition to given system sleep state.
119 * @prepare: Prepare the platform for entering the system sleep state indicated
125 * system cannot enter the desired sleep state (@prepare_late(), @enter(),
128 * @prepare_late: Finish preparing the platform for entering the system sleep
133 * system cannot enter the desired sleep state (@enter() will not be
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| /kernel/linux/linux-4.19/Documentation/blockdev/ |
| D | README.DAC960 | 14 Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
21 California 94555, USA and can be reached at 510.796.6100 or on the World Wide
40 by the driver at startup, along with any subsequent system messages relevant to
41 the controller's operation, and a detailed description of your system's
65 from Linux while the system is operational.
67 The DAC960 driver is architected to support up to 8 controllers per system.
77 also known as "System Drives", and Drive Groups are also called "Packs". Both
82 System (DEVFS). The device corresponding to Logical Drive D on Controller C
87 The DAC960 driver is assigned major numbers 48 - 55 with one major number per
100 1 Wide Ultra-2/LVD SCSI channel
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| /kernel/linux/linux-4.19/certs/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
16 certificate as described in Documentation/admin-guide/module-signing.rst
19 bool "Provide system-wide ring of trusted keys"
23 Provide a system keyring to which trusted keys can be added. Keys in
25 by the kernel from compiled-in data and from hardware key stores, but
32 string "Additional X.509 keys for default system keyring"
35 If set, this option should be the filename of a PEM-formatted file
37 system keyring. Any certificate used for module signing is implicitly
40 NOTE: If you previously provided keys for the system keyring in the
41 form of DER-encoded *.x509 files in the top-level build directory,
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| /kernel/linux/linux-4.19/Documentation/admin-guide/pm/ |
| D | strategies.rst | 9 The Linux kernel supports two major high-level power management strategies.
11 One of them is based on using global low-power states of the whole system in
12 which user space code cannot be executed and the overall system activity is
13 significantly reduced, referred to as :doc:`sleep states <sleep-states>`. The
14 kernel puts the system into one of these states when requested by user space
15 and the system stays in it until a special signal is received from one of
17 user space code can run. Because sleep states are global and the whole system
19 :doc:`system-wide power management <system-wide>`.
21 The other strategy, referred to as the :doc:`working-state power management
22 <working-state>`, is based on adjusting the power states of individual hardware
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| /kernel/linux/linux-4.19/Documentation/ABI/testing/ |
| D | sysfs-devices-power | 14 space to check if the device is enabled to wake up the system
20 used to activate the system from a sleep state. Such devices
31 For the devices that are not capable of generating system wakeup
33 be enabled to wake up the system from sleep states.
40 space to control the run-time power management of the device.
61 with the main suspend/resume thread) during system-wide power
86 attribute is read-only. If the device is not capable to wake up
87 the system from sleep states, this attribute is not present.
88 If the device is not enabled to wake up the system from sleep
98 is read-only. If the device is not capable to wake up the
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| /kernel/linux/linux-5.10/Documentation/ABI/testing/ |
| D | sysfs-devices-power | 14 space to check if the device is enabled to wake up the system
20 used to activate the system from a sleep state. Such devices
31 For the devices that are not capable of generating system wakeup
33 be enabled to wake up the system from sleep states.
40 space to control the run-time power management of the device.
61 with the main suspend/resume thread) during system-wide power
86 attribute is read-only. If the device is not capable to wake up
87 the system from sleep states, this attribute is not present.
88 If the device is not enabled to wake up the system from sleep
98 is read-only. If the device is not capable to wake up the
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| /kernel/liteos_m/arch/risc-v/nuclei/gcc/nmsis/Core/Include/ |
| D | core_feature_timer.h | 4 * SPDX-License-Identifier: Apache-2.0
10 * www.apache.org/licenses/LICENSE-2.0
22 * @brief System Timer feature API header file for Nuclei N/NX Core
25 * System Timer Feature Configuration Macro:
26 * 1. __SYSTIMER_PRESENT: Define whether Private System Timer is present or not.
29 * 2. __SYSTIMER_BASEADDR: Define the base address of the System Timer.
37 * \defgroup NMSIS_Core_SysTimer_Registers Register Define and Type Definitions Of System Timer
39 * \brief Type definitions and defines for system timer registers.
44 * \brief Structure type to access the System Timer (SysTimer).
46 * Structure definition to access the system timer(SysTimer).
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| /kernel/linux/linux-4.19/Documentation/scheduler/ |
| D | sched-rt-group.txt | 1 Real-Time group scheduling
2 --------------------------
12 2.1 System-wide settings
21 Fiddling with these settings can result in an unstable system, the knobs are
27 system when the period is smaller than either the available hrtimer
31 system when the runtime is so small the system has difficulty making
33 are real-time processes).
40 ---------------
50 ----------------
77 lack an EDF scheduler to make non-uniform periods usable.
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| /kernel/linux/linux-5.10/Documentation/scheduler/ |
| D | sched-rt-group.rst | 2 Real-Time group scheduling
12 2.1 System-wide settings
21 Fiddling with these settings can result in an unstable system, the knobs are
27 system when the period is smaller than either the available hrtimer
31 system when the runtime is so small the system has difficulty making
33 are real-time processes).
40 ---------------
50 ----------------
77 lack an EDF scheduler to make non-uniform periods usable.
84 2.1 System wide settings
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| /kernel/linux/linux-5.10/arch/x86/kernel/cpu/ |
| D | intel_epb.c | 1 // SPDX-License-Identifier: GPL-2.0
26 * preference with respect to the power-performance tradeoffs present in the
32 * system-wide transitions from sleep states back into the working state
35 * system-wide transitions to sleep states and restore them on the way back to
37 * when they are taken offline during transitions into system sleep states and
41 * a system-wide PM transition is started are not taken offline again, but their
50 * the system battery to drain too fast, for example, so it is better to adjust
51 * it on CPU bring-up and if the initial EPB value for a given CPU is 0, the
107 "balance-performance",
109 "balance-power",
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| /kernel/linux/linux-5.10/Documentation/trace/ |
| D | tracepoint-analysis.rst | 15 what is going on within the system. There are a large number of methods for
27 ----------------------
32 $ find /sys/kernel/debug/tracing/events -type d
37 ----------------------------------------
55 3.1 System-Wide Event Enabling
56 ------------------------------
59 can be enabled system-wide. A short example of enabling all events related
62 $ for i in `find /sys/kernel/debug/tracing/events -name "enable" | grep mm_`; do echo 1 > $i; done
64 3.2 System-Wide Event Enabling with SystemTap
65 ---------------------------------------------
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