| /kernel/linux/linux-6.6/drivers/thermal/ |
| D | cpuidle_cooling.c | 1 // SPDX-License-Identifier: GPL-2.0
21 * struct cpuidle_cooling_device - data for the idle cooling device
22 * @ii_dev: an atomic to keep track of the last task exiting the idle cycle
23 * @state: a normalized integer giving the state of the cooling device
27 unsigned long state; member
31 * cpuidle_cooling_runtime - Running time computation
32 * @idle_duration_us: CPU idle time to inject in microseconds
33 * @state: a percentile based number
35 * The running duration is computed from the idle injection duration
36 * which is fixed. If we reach 100% of idle injection ratio, that
[all …]
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| /kernel/linux/linux-5.10/drivers/cpuidle/ |
| D | dt_idle_states.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * DT idle states parsing code.
9 #define pr_fmt(fmt) "DT idle-states: " fmt
30 * pointer of the passed in struct of_device_id array to the idle in init_state_node()
31 * state enter function. in init_state_node()
33 idle_state->enter = match_id->data; in init_state_node()
35 * Since this is not a "coupled" state, it's safe to assume interrupts in init_state_node()
39 idle_state->enter_s2idle = match_id->data; in init_state_node()
41 err = of_property_read_u32(state_node, "wakeup-latency-us", in init_state_node()
42 &idle_state->exit_latency); in init_state_node()
[all …]
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| D | cpuidle-powernv.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * cpuidle-powernv - idle state cpuidle driver.
4 * Adapted from drivers/cpuidle/cpuidle-pseries
26 * Expose only those Hardware idle states via the cpuidle framework
32 .name = "powernv_idle",
58 for (i = index + 1; i < drv->state_count; i++) { in get_snooze_timeout()
59 if (dev->states_usage[i].disable) in get_snooze_timeout()
62 return drv->states[i].target_residency * tb_ticks_per_usec; in get_snooze_timeout()
154 .name = "snooze",
193 drv->state_count = 0; in powernv_cpuidle_driver_init()
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| D | cpuidle-arm.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ARM/ARM64 generic CPU idle driver.
25 * arm_enter_idle_state - Programs CPU to enter the specified state
29 * idx: state index
32 * specified target state selected by the governor.
38 * Pass idle state index to arm_cpuidle_suspend which in turn in arm_enter_idle_state()
39 * will call the CPU ops suspend protocol with idle index as a in arm_enter_idle_state()
46 .name = "arm_idle",
49 * State at index 0 is standby wfi and considered standard
51 * can't be used as "state 0", DT bindings must be implemented
[all …]
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/powerpc/opal/ |
| D | power-mgt.txt | 1 IBM Power-Management Bindings
5 idle states. The description of these idle states is exposed via the
6 node @power-mgt in the device-tree by the firmware.
9 ----------------
10 Typically each idle state has the following associated properties:
12 - name: The name of the idle state as defined by the firmware.
14 - flags: indicating some aspects of this idle states such as the
15 extent of state-loss, whether timebase is stopped on this
16 idle states and so on. The flag bits are as follows:
18 - exit-latency: The latency involved in transitioning the state of the
[all …]
|
| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/powerpc/opal/ |
| D | power-mgt.txt | 1 IBM Power-Management Bindings
5 idle states. The description of these idle states is exposed via the
6 node @power-mgt in the device-tree by the firmware.
9 ----------------
10 Typically each idle state has the following associated properties:
12 - name: The name of the idle state as defined by the firmware.
14 - flags: indicating some aspects of this idle states such as the
15 extent of state-loss, whether timebase is stopped on this
16 idle states and so on. The flag bits are as follows:
18 - exit-latency: The latency involved in transitioning the state of the
[all …]
|
| /kernel/linux/linux-6.6/drivers/cpuidle/ |
| D | dt_idle_states.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * DT idle states parsing code.
9 #define pr_fmt(fmt) "DT idle-states: " fmt
29 * pointer of the passed in struct of_device_id array to the idle in init_state_node()
30 * state enter function. in init_state_node()
32 idle_state->enter = match_id->data; in init_state_node()
34 * Since this is not a "coupled" state, it's safe to assume interrupts in init_state_node()
38 idle_state->enter_s2idle = match_id->data; in init_state_node()
40 err = of_property_read_u32(state_node, "wakeup-latency-us", in init_state_node()
41 &idle_state->exit_latency); in init_state_node()
[all …]
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| D | cpuidle-powernv.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * cpuidle-powernv - idle state cpuidle driver.
4 * Adapted from drivers/cpuidle/cpuidle-pseries
26 * Expose only those Hardware idle states via the cpuidle framework
32 .name = "powernv_idle",
58 for (i = index + 1; i < drv->state_count; i++) { in get_snooze_timeout()
59 if (dev->states_usage[i].disable) in get_snooze_timeout()
62 return drv->states[i].target_residency * tb_ticks_per_usec; in get_snooze_timeout()
79 dev->poll_time_limit = false; in snooze_loop()
90 dev->poll_time_limit = true; in snooze_loop()
[all …]
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| D | cpuidle-arm.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ARM/ARM64 generic CPU idle driver.
25 * arm_enter_idle_state - Programs CPU to enter the specified state
29 * idx: state index
32 * specified target state selected by the governor.
38 * Pass idle state index to arm_cpuidle_suspend which in turn in arm_enter_idle_state()
39 * will call the CPU ops suspend protocol with idle index as a in arm_enter_idle_state()
46 .name = "arm_idle",
49 * State at index 0 is standby wfi and considered standard
51 * can't be used as "state 0", DT bindings must be implemented
[all …]
|
| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 CPU Idle Time Management
21 memory or executed. Those states are the *idle* states of the processor.
23 Since part of the processor hardware is not used in idle states, entering them
27 CPU idle time management is an energy-efficiency feature concerned about using
28 the idle states of processors for this purpose.
31 ------------
33 CPU idle time management operates on CPUs as seen by the *CPU scheduler* (that
37 software as individual single-core processors. In other words, a CPU is an
44 enter an idle state, that applies to the processor as a whole.
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| D | intel_idle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 ``intel_idle`` CPU Idle Time Management Driver
17 :doc:`CPU idle time management subsystem <cpuidle>` in the Linux kernel
18 (``CPUIdle``). It is the default CPU idle time management driver for the
27 logical CPU executing it is idle and so it may be possible to put some of the
28 processor's functional blocks into low-power states. That instruction takes two
38 only way to pass early-configuration-time parameters to it is via the kernel
42 .. _intel-idle-enumeration-of-states:
44 Enumeration of Idle States
50 as C-states (in the ACPI terminology) or idle states. The list of meaningful
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|
| /kernel/linux/linux-6.6/Documentation/admin-guide/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 CPU Idle Time Management
21 memory or executed. Those states are the *idle* states of the processor.
23 Since part of the processor hardware is not used in idle states, entering them
27 CPU idle time management is an energy-efficiency feature concerned about using
28 the idle states of processors for this purpose.
31 ------------
33 CPU idle time management operates on CPUs as seen by the *CPU scheduler* (that
37 software as individual single-core processors. In other words, a CPU is an
44 enter an idle state, that applies to the processor as a whole.
[all …]
|
| D | intel_idle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 ``intel_idle`` CPU Idle Time Management Driver
17 :doc:`CPU idle time management subsystem <cpuidle>` in the Linux kernel
18 (``CPUIdle``). It is the default CPU idle time management driver for the
24 Documentation/admin-guide/pm/cpuidle.rst if you have not done that yet.]
27 logical CPU executing it is idle and so it may be possible to put some of the
28 processor's functional blocks into low-power states. That instruction takes two
38 only way to pass early-configuration-time parameters to it is via the kernel
42 .. _intel-idle-enumeration-of-states:
44 Enumeration of Idle States
[all …]
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| /kernel/linux/linux-5.10/tools/power/cpupower/man/ |
| D | cpupower-monitor.1 | 1 .TH CPUPOWER\-MONITOR "1" "22/02/2011" "" "cpupower Manual"
2 .SH NAME
3 cpupower\-monitor \- Report processor frequency and idle statistics
7 .RB "\-l"
10 .RB [ -c ] [ "\-m <mon1>," [ "<mon2>,..." ] ]
11 .RB [ "\-i seconds" ]
14 .RB [ -c ][ "\-m <mon1>," [ "<mon2>,..." ] ]
18 \fBcpupower-monitor \fP reports processor topology, frequency and idle power
19 state statistics. Either \fBcommand\fP is forked and
22 \fBcpupower-monitor \fP implements independent processor sleep state and
[all …]
|
| D | cpupower-idle-set.1 | 1 .TH "CPUPOWER-IDLE-SET" "1" "0.1" "" "cpupower Manual"
2 .SH "NAME"
4 cpupower\-idle\-set \- Utility to set cpu idle state specific kernel options
7 cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
10 The cpupower idle\-set subcommand allows to set cpu idle, also called cpu
11 sleep state, specific options offered by the kernel. One example is disabling
16 \fB\-d\fR \fB\-\-disable\fR <STATE_NO>
17 Disable a specific processor sleep state.
19 \fB\-e\fR \fB\-\-enable\fR <STATE_NO>
20 Enable a specific processor sleep state.
[all …]
|
| D | cpupower-idle-info.1 | 1 .TH "CPUPOWER-IDLE-INFO" "1" "0.1" "" "cpupower Manual"
2 .SH "NAME"
4 cpupower\-idle\-info \- Utility to retrieve cpu idle kernel information
7 cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
10 A tool which prints out per cpu idle information helpful to developers and interested users.
14 \fB\-f\fR \fB\-\-silent\fR
15 Only print a summary of all available C-states in the system.
17 \fB\-e\fR \fB\-\-proc\fR
19 Prints out idle information in old /proc/acpi/processor/*/power format. This
23 .SH IDLE\-INFO DESCRIPTIONS
[all …]
|
| /kernel/linux/linux-6.6/tools/power/cpupower/man/ |
| D | cpupower-monitor.1 | 1 .TH CPUPOWER\-MONITOR "1" "22/02/2011" "" "cpupower Manual"
2 .SH NAME
3 cpupower\-monitor \- Report processor frequency and idle statistics
7 .RB "\-l"
10 .RB [ -c ] [ "\-m <mon1>," [ "<mon2>,..." ] ]
11 .RB [ "\-i seconds" ]
14 .RB [ -c ][ "\-m <mon1>," [ "<mon2>,..." ] ]
18 \fBcpupower-monitor \fP reports processor topology, frequency and idle power
19 state statistics. Either \fBcommand\fP is forked and
22 \fBcpupower-monitor \fP implements independent processor sleep state and
[all …]
|
| D | cpupower-idle-set.1 | 1 .TH "CPUPOWER-IDLE-SET" "1" "0.1" "" "cpupower Manual"
2 .SH "NAME"
4 cpupower\-idle\-set \- Utility to set cpu idle state specific kernel options
7 cpupower [ \-c cpulist ] idle\-set [\fIoptions\fP]
10 The cpupower idle\-set subcommand allows to set cpu idle, also called cpu
11 sleep state, specific options offered by the kernel. One example is disabling
16 \fB\-d\fR \fB\-\-disable\fR <STATE_NO>
17 Disable a specific processor sleep state.
19 \fB\-e\fR \fB\-\-enable\fR <STATE_NO>
20 Enable a specific processor sleep state.
[all …]
|
| D | cpupower-idle-info.1 | 1 .TH "CPUPOWER-IDLE-INFO" "1" "0.1" "" "cpupower Manual"
2 .SH "NAME"
4 cpupower\-idle\-info \- Utility to retrieve cpu idle kernel information
7 cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
10 A tool which prints out per cpu idle information helpful to developers and interested users.
14 \fB\-f\fR \fB\-\-silent\fR
15 Only print a summary of all available C-states in the system.
17 \fB\-e\fR \fB\-\-proc\fR
19 Prints out idle information in old /proc/acpi/processor/*/power format. This
23 .SH IDLE\-INFO DESCRIPTIONS
[all …]
|
| /kernel/linux/linux-5.10/arch/arm/mach-omap2/ |
| D | cpuidle34xx.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-omap2/cpuidle34xx.c
5 * OMAP3 CPU IDLE Routines
11 * Karthik Dasu <karthik-dp@ti.com>
17 * Richard Woodruff <r-woodruff2@ti.com>
36 /* Mach specific information to be recorded in the C-state driver_data */
53 * entering idle.
65 /* In C1 do not allow PER state lower than CORE state */
102 * omap3_enter_idle - Programs OMAP3 to enter the specified state
105 * @index: the index of state to be entered
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| /kernel/linux/linux-6.6/arch/arm/mach-omap2/ |
| D | cpuidle34xx.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-omap2/cpuidle34xx.c
5 * OMAP3 CPU IDLE Routines
11 * Karthik Dasu <karthik-dp@ti.com>
17 * Richard Woodruff <r-woodruff2@ti.com>
36 /* Mach specific information to be recorded in the C-state driver_data */
53 * entering idle.
65 /* In C1 do not allow PER state lower than CORE state */
102 * omap3_enter_idle - Programs OMAP3 to enter the specified state
105 * @index: the index of state to be entered
[all …]
|
| /kernel/linux/linux-6.6/Documentation/driver-api/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 CPU Idle Time Management
13 CPU Idle Time Management Subsystem
18 cores) is idle after an interrupt or equivalent wakeup event, which means that
19 there are no tasks to run on it except for the special "idle" task associated
21 belongs to. That can be done by making the idle logical CPU stop fetching
23 depended on by it into an idle state in which they will draw less power.
25 However, there may be multiple different idle states that can be used in such a
28 particular idle state. That is the role of the CPU idle time management
35 units: *governors* responsible for selecting idle states to ask the processor
[all …]
|
| /kernel/linux/linux-5.10/Documentation/driver-api/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 CPU Idle Time Management
13 CPU Idle Time Management Subsystem
18 cores) is idle after an interrupt or equivalent wakeup event, which means that
19 there are no tasks to run on it except for the special "idle" task associated
21 belongs to. That can be done by making the idle logical CPU stop fetching
23 depended on by it into an idle state in which they will draw less power.
25 However, there may be multiple different idle states that can be used in such a
28 particular idle state. That is the role of the CPU idle time management
35 units: *governors* responsible for selecting idle states to ask the processor
[all …]
|
| /kernel/linux/linux-6.6/drivers/idle/ |
| D | intel_idle.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * intel_idle.c - native hardware idle loop for modern Intel processors
5 * Copyright (c) 2013 - 2020, Intel Corporation.
20 * All CPUs have same idle states as boot CPU
23 * for preventing entry into deep C-states
25 * CPU will flush caches as needed when entering a C-state via MWAIT
33 * ACPI has a .suspend hack to turn off deep c-statees during suspend
39 /* un-comment DEBUG to enable pr_debug() statements */
55 #include <asm/intel-family.h>
56 #include <asm/nospec-branch.h>
[all …]
|
| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/mux/ |
| D | mux-controller.txt | 10 A mux controller provides a number of states to its consumers, and the state
11 space is a simple zero-based enumeration. I.e. 0-1 for a 2-way multiplexer,
12 0-7 for an 8-way multiplexer, etc.
16 ---------
19 want to use with a property containing a 'mux-ctrl-list':
21 mux-ctrl-list ::= <single-mux-ctrl> [mux-ctrl-list]
22 single-mux-ctrl ::= <mux-ctrl-phandle> [mux-ctrl-specifier]
23 mux-ctrl-phandle : phandle to mux controller node
24 mux-ctrl-specifier : array of #mux-control-cells specifying the
27 Mux controller properties should be named "mux-controls". The exact meaning of
[all …]
|