| /kernel/linux/linux-6.6/Documentation/admin-guide/pm/ |
| D | intel_idle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
24 Documentation/admin-guide/pm/cpuidle.rst if you have not done that yet.]
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
51 ``MWAIT`` hint values and idle states (i.e. low-power configurations of the
55 In order to create a list of available idle states required by the ``CPUIdle``
56 subsystem (see :ref:`idle-states-representation` in
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| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | intel_idle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
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
51 ``MWAIT`` hint values and idle states (i.e. low-power configurations of the
55 In order to create a list of available idle states required by the ``CPUIdle``
56 subsystem (see :ref:`idle-states-representation` in :doc:`cpuidle`),
57 ``intel_idle`` can use two sources of information: static tables of idle states
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| /kernel/linux/linux-6.6/drivers/cpuidle/ |
| D | dt_idle_genpd.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2019 Linaro Ltd.
8 * Copyright (c) 2021 Western Digital Corporation or its affiliates.
9 * Copyright (c) 2022 Ventana Micro Systems Inc.
12 #define pr_fmt(fmt) "dt-idle-genpd: " fmt
26 struct genpd_power_state *states, int state_count) in pd_parse_state_nodes() argument
32 ret = parse_state(to_of_node(states[i].fwnode), &state); in pd_parse_state_nodes()
38 ret = -ENOMEM; in pd_parse_state_nodes()
42 states[i].data = state_buf; in pd_parse_state_nodes()
48 i--; in pd_parse_state_nodes()
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| D | cpuidle-riscv-sbi.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * RISC-V SBI CPU idle driver.
5 * Copyright (c) 2021 Western Digital Corporation or its affiliates.
6 * Copyright (c) 2022 Ventana Micro Systems Inc.
9 #define pr_fmt(fmt) "cpuidle-riscv-sbi: " fmt
33 u32 *states; member
52 data->available = true; in sbi_set_domain_state()
53 data->state = state; in sbi_set_domain_state()
60 return data->state; in sbi_get_domain_state()
67 data->available = false; in sbi_clear_domain_state()
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| /kernel/linux/linux-5.10/arch/h8300/lib/ |
| D | mulsi3.S | 1 ; SPDX-License-Identifier: GPL-2.0
3 ; mulsi3 for H8/300H - based on Renesas SH implementation
9 ; 16b * 16b = 372 states (worst case)
10 ; 32b * 32b = 724 states (worst case)
14 ; 16b * 16b = 48 states
15 ; 16b * 32b = 72 states
16 ; 32b * 32b = 92 states
21 mov.w r1,r2 ; ( 2 states) b * d
22 mulxu r0,er2 ; (22 states)
24 mov.w e0,r3 ; ( 2 states) a * d
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| /kernel/linux/linux-6.6/tools/power/cpupower/man/ |
| D | cpupower-idle-set.1 | 1 .TH "CPUPOWER-IDLE-SET" "1" "0.1" "" "cpupower Manual"
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
12 sleep states. This can be handy for power vs performance tuning.
16 \fB\-d\fR \fB\-\-disable\fR <STATE_NO>
19 \fB\-e\fR \fB\-\-enable\fR <STATE_NO>
22 \fB\-D\fR \fB\-\-disable-by-latency\fR <LATENCY>
23 Disable all idle states with a equal or higher latency than <LATENCY>.
25 Enable all idle states with a latency lower than <LATENCY>.
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| D | cpupower-idle-info.1 | 1 .TH "CPUPOWER-IDLE-INFO" "1" "0.1" "" "cpupower Manual"
4 cpupower\-idle\-info \- Utility to retrieve cpu idle kernel information
7 cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
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
23 .SH IDLE\-INFO DESCRIPTIONS
28 good overview about the usage and availability of processor sleep states on
31 Be aware that the sleep states as exported by the hardware or BIOS and used by
37 which monitor the duration of sleep states the processor resided in. The
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| D | cpupower-set.1 | 1 .TH CPUPOWER\-SET "1" "22/02/2011" "" "cpupower Manual"
3 cpupower\-set \- Set processor power related kernel or hardware configurations
6 .B cpupower set [ \-b VAL ]
15 described in the cpupower(1) manpage in the \-\-cpu option section. Whether an
24 \-\-perf-bias, \-b
30 The range of valid numbers is 0-15, where 0 is maximum
33 The processor uses this information in model-specific ways
34 when it must select trade-offs between performance and
37 This policy hint does not supersede Processor Performance states
38 (P-states) or CPU Idle power states (C-states), but allows
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| D | cpupower-monitor.1 | 1 .TH CPUPOWER\-MONITOR "1" "22/02/2011" "" "cpupower Manual"
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
22 \fBcpupower-monitor \fP implements independent processor sleep state and
24 directly reading out hardware registers. Use \-l to get an overview which are
29 \-l
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| /kernel/linux/linux-5.10/tools/power/cpupower/man/ |
| D | cpupower-idle-set.1 | 1 .TH "CPUPOWER-IDLE-SET" "1" "0.1" "" "cpupower Manual"
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
12 sleep states. This can be handy for power vs performance tuning.
16 \fB\-d\fR \fB\-\-disable\fR <STATE_NO>
19 \fB\-e\fR \fB\-\-enable\fR <STATE_NO>
22 \fB\-D\fR \fB\-\-disable-by-latency\fR <LATENCY>
23 Disable all idle states with a equal or higher latency than <LATENCY>.
25 Enable all idle states with a latency lower than <LATENCY>.
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| D | cpupower-idle-info.1 | 1 .TH "CPUPOWER-IDLE-INFO" "1" "0.1" "" "cpupower Manual"
4 cpupower\-idle\-info \- Utility to retrieve cpu idle kernel information
7 cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
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
23 .SH IDLE\-INFO DESCRIPTIONS
28 good overview about the usage and availability of processor sleep states on
31 Be aware that the sleep states as exported by the hardware or BIOS and used by
37 which monitor the duration of sleep states the processor resided in. The
[all …]
|
| D | cpupower-set.1 | 1 .TH CPUPOWER\-SET "1" "22/02/2011" "" "cpupower Manual"
3 cpupower\-set \- Set processor power related kernel or hardware configurations
6 .B cpupower set [ \-b VAL ]
15 described in the cpupower(1) manpage in the \-\-cpu option section. Whether an
24 \-\-perf-bias, \-b
30 The range of valid numbers is 0-15, where 0 is maximum
33 The processor uses this information in model-specific ways
34 when it must select trade-offs between performance and
37 This policy hint does not supersede Processor Performance states
38 (P-states) or CPU Idle power states (C-states), but allows
[all …]
|
| D | cpupower-monitor.1 | 1 .TH CPUPOWER\-MONITOR "1" "22/02/2011" "" "cpupower Manual"
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
22 \fBcpupower-monitor \fP implements independent processor sleep state and
24 directly reading out hardware registers. Use \-l to get an overview which are
29 \-l
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| /kernel/linux/linux-6.6/Documentation/driver-api/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
25 However, there may be multiple different idle states that can be used in such a
35 units: *governors* responsible for selecting idle states to ask the processor
53 containing four callback pointers, :c:member:`enable`, :c:member:`disable`,
54 :c:member:`select`, :c:member:`reflect`, a :c:member:`rating` field described
58 with the ``CPUIdle`` core by calling :c:func:`cpuidle_register_governor()` with
62 :c:member:`rating` field is greater than the value of that field for the
75 :c:member:`enable`
85 struct cpuidle_state objects representing idle states that the
89 code, and that causes the kernel to run the architecture-specific
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| /kernel/linux/linux-5.10/Documentation/driver-api/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
25 However, there may be multiple different idle states that can be used in such a
35 units: *governors* responsible for selecting idle states to ask the processor
53 containing four callback pointers, :c:member:`enable`, :c:member:`disable`,
54 :c:member:`select`, :c:member:`reflect`, a :c:member:`rating` field described
58 with the ``CPUIdle`` core by calling :c:func:`cpuidle_register_governor()` with
62 :c:member:`rating` field is greater than the value of that field for the
75 :c:member:`enable`
85 struct cpuidle_state objects representing idle states that the
89 code, and that causes the kernel to run the architecture-specific
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| /kernel/linux/linux-5.10/drivers/regulator/ |
| D | gpio-regulator.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * gpio-regulator.c
7 * based on fixed.c
13 * Copyright (c) 2009 Nokia Corporation
14 * Roger Quadros <ext-roger.quadros@nokia.com>
17 * non-controllable regulators, as well as for allowing testing on
28 #include <linux/regulator/gpio-regulator.h>
39 struct gpio_regulator_state *states; member
50 for (ptr = 0; ptr < data->nr_states; ptr++) in gpio_regulator_get_value()
51 if (data->states[ptr].gpios == data->state) in gpio_regulator_get_value()
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| /kernel/linux/linux-6.6/drivers/acpi/ |
| D | processor_idle.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * processor_idle - idle state submodule to the ACPI processor driver
5 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * Copyright (C) 2004, 2005 Dominik Brodowski <linux@brodo.de>
8 * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
9 * - Added processor hotplug support
10 * Copyright (C) 2005 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
11 * - Added support for C3 on SMP
31 * creating an empty asm-ia64/apic.h would just trade pest vs. cholera.
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| /kernel/linux/linux-6.6/drivers/cpuidle/governors/ |
| D | ladder.c | 2 * ladder.c - the residency ladder algorithm
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * Copyright (C) 2004, 2005 Dominik Brodowski <linux@brodo.de>
8 * (C) 2006-2007 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
40 struct ladder_device_state states[CPUIDLE_STATE_MAX]; member
46 * ladder_do_selection - prepares private data for a state change
55 ldev->states[old_idx].stats.promotion_count = 0; in ladder_do_selection()
56 ldev->states[old_idx].stats.demotion_count = 0; in ladder_do_selection()
57 dev->last_state_idx = new_idx; in ladder_do_selection()
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| /kernel/linux/linux-5.10/drivers/cpuidle/governors/ |
| D | ladder.c | 2 * ladder.c - the residency ladder algorithm
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * Copyright (C) 2004, 2005 Dominik Brodowski <linux@brodo.de>
8 * (C) 2006-2007 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
40 struct ladder_device_state states[CPUIDLE_STATE_MAX]; member
46 * ladder_do_selection - prepares private data for a state change
55 ldev->states[old_idx].stats.promotion_count = 0; in ladder_do_selection()
56 ldev->states[old_idx].stats.demotion_count = 0; in ladder_do_selection()
57 dev->last_state_idx = new_idx; in ladder_do_selection()
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| /kernel/linux/linux-6.6/drivers/regulator/ |
| D | gpio-regulator.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * gpio-regulator.c
7 * based on fixed.c
13 * Copyright (c) 2009 Nokia Corporation
14 * Roger Quadros <ext-roger.quadros@nokia.com>
17 * non-controllable regulators, as well as for allowing testing on
28 #include <linux/regulator/gpio-regulator.h>
39 struct gpio_regulator_state *states; member
50 for (ptr = 0; ptr < data->nr_states; ptr++) in gpio_regulator_get_value()
51 if (data->states[ptr].gpios == data->state) in gpio_regulator_get_value()
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| /kernel/linux/linux-5.10/drivers/acpi/ |
| D | processor_idle.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * processor_idle - idle state submodule to the ACPI processor driver
5 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * Copyright (C) 2004, 2005 Dominik Brodowski <linux@brodo.de>
8 * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
9 * - Added processor hotplug support
10 * Copyright (C) 2005 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
11 * - Added support for C3 on SMP
29 * creating an empty asm-ia64/apic.h would just trade pest vs. cholera.
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| /kernel/linux/linux-5.10/arch/x86/kernel/acpi/ |
| D | cstate.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2005 Intel Corporation
5 * - Added _PDC for SMP C-states on Intel CPUs
22 * - When cache is not shared among all CPUs, we flush cache
24 * - When cache is shared among all CPUs, we use bm_check
32 struct cpuinfo_x86 *c = &cpu_data(cpu); in acpi_processor_power_init_bm_check() local
34 flags->bm_check = 0; in acpi_processor_power_init_bm_check()
36 flags->bm_check = 1; in acpi_processor_power_init_bm_check()
37 else if (c->x86_vendor == X86_VENDOR_INTEL) { in acpi_processor_power_init_bm_check()
43 flags->bm_check = 1; in acpi_processor_power_init_bm_check()
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| /kernel/linux/linux-6.6/arch/x86/kernel/acpi/ |
| D | cstate.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2005 Intel Corporation
5 * - Added _PDC for SMP C-states on Intel CPUs
22 * - When cache is not shared among all CPUs, we flush cache
24 * - When cache is shared among all CPUs, we use bm_check
32 struct cpuinfo_x86 *c = &cpu_data(cpu); in acpi_processor_power_init_bm_check() local
34 flags->bm_check = 0; in acpi_processor_power_init_bm_check()
36 flags->bm_check = 1; in acpi_processor_power_init_bm_check()
37 else if (c->x86_vendor == X86_VENDOR_INTEL) { in acpi_processor_power_init_bm_check()
43 flags->bm_check = 1; in acpi_processor_power_init_bm_check()
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| /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>
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| /kernel/linux/linux-5.10/drivers/cpufreq/ |
| D | ia64-acpi-cpufreq.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * This file provides the ACPI based P-state support. This
6 * (arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c)
8 * Copyright (C) 2005 Intel Corp
28 MODULE_DESCRIPTION("ACPI Processor P-States Driver");
59 return -ENODEV; in processor_set_pstate()
86 /* To be used only after data->acpi_data is initialized */
96 for (i = 0; i < data->acpi_data.state_count; i++) { in extract_clock()
97 if (value == data->acpi_data.states[i].status) in extract_clock()
98 return data->acpi_data.states[i].core_frequency; in extract_clock()
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|