| /Linux-v5.15/Documentation/scheduler/ |
| D | sched-energy.rst | 2 Energy Aware Scheduling
8 Energy Aware Scheduling (or EAS) gives the scheduler the ability to predict
9 the impact of its decisions on the energy consumed by CPUs. EAS relies on an
10 Energy Model (EM) of the CPUs to select an energy efficient CPU for each task,
20 because this is where the potential for saving energy through scheduling is
25 please refer to its documentation (see Documentation/power/energy-model.rst).
32 - energy = [joule] (resource like a battery on powered devices)
33 - power = energy/time = [joule/second] = [watt]
35 The goal of EAS is to minimize energy, while still getting the job done. That
44 energy [J]
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| /Linux-v5.15/Documentation/devicetree/bindings/net/ |
| D | smsc-lan87xx.txt | 12 - smsc,disable-energy-detect:
13 If set, do not enable energy detect mode for the SMSC phy.
14 default: enable energy detect mode
17 smsc phy with disabled energy detect mode on an am335x based board.
25 smsc,disable-energy-detect;
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| D | ethernet-phy.yaml | 97 Mark the corresponding energy efficient ethernet mode as
103 Mark the corresponding energy efficient ethernet mode as
109 Mark the corresponding energy efficient ethernet mode as
115 Mark the corresponding energy efficient ethernet mode as
121 Mark the corresponding energy efficient ethernet mode as
127 Mark the corresponding energy efficient ethernet mode as
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| /Linux-v5.15/include/linux/ |
| D | energy_model.h | 19 * energy calculation. Equal to: power * max_frequency / frequency
35 * misses during energy calculations in the scheduler
57 * Increase resolution of energy estimation calculations for 64-bit
59 * task placement when two Performance Domains might provide similar energy
105 * em_cpu_energy() - Estimates the energy consumed by the CPUs of a
107 * @pd : performance domain for which energy has to be estimated
117 * Return: the sum of the energy consumed by the CPUs of the domain assuming
148 * Find the lowest performance state of the Energy Model above the in em_cpu_energy()
166 * the EM), the energy consumed by this CPU at that performance state in em_cpu_energy()
176 * units of power, it can be manipulated as an energy value in em_cpu_energy()
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| /Linux-v5.15/Documentation/power/ |
| D | energy-model.rst | 4 Energy Model of devices
10 The Energy Model (EM) framework serves as an interface between drivers knowing
12 subsystems willing to use that information to make energy-aware decisions.
26 can be found in the Energy-Aware Scheduler documentation
27 Documentation/scheduler/sched-energy.rst. For some subsystems like thermal or
36 an 'abstract scale' deriving real energy in milli-Joules would not be possible.
51 | Energy Model |
110 There are two API functions which provide the access to the energy model:
116 Subsystems interested in the energy model of a CPU can retrieve it using the
117 em_cpu_get() API. The energy model tables are allocated once upon creation of
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| /Linux-v5.15/arch/x86/events/ |
| D | rapl.c | 3 * Support Intel/AMD RAPL energy consumption counters
12 * RAPL provides more controls than just reporting energy consumption
13 * however here we only expose the 3 energy consumption free running
70 * RAPL energy status counters
397 RAPL_EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
398 RAPL_EVENT_ATTR_STR(energy-pkg , rapl_pkg, "event=0x02");
399 RAPL_EVENT_ATTR_STR(energy-ram , rapl_ram, "event=0x03");
400 RAPL_EVENT_ATTR_STR(energy-gpu , rapl_gpu, "event=0x04");
401 RAPL_EVENT_ATTR_STR(energy-psys, rapl_psys, "event=0x05");
403 RAPL_EVENT_ATTR_STR(energy-cores.unit, rapl_cores_unit, "Joules");
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| /Linux-v5.15/drivers/isdn/mISDN/ |
| D | dsp_ecdis.h | 61 /* Estimate the overall energy in the channel, and the energy in in echo_can_disable_detector_update()
62 the notch (i.e. overall channel energy - tone energy => noise). in echo_can_disable_detector_update()
64 Damp the overall energy a little more for a stable result. in echo_can_disable_detector_update()
65 Damp the notch energy a little less, so we don't damp out the in echo_can_disable_detector_update()
70 /* There is adequate energy in the channel. in echo_can_disable_detector_update()
|
| /Linux-v5.15/Documentation/hwmon/ |
| D | ibmaem.rst | 4 This driver talks to the IBM Systems Director Active Energy Manager, known
26 This driver implements sensor reading support for the energy and power meters
31 The v1 AEM interface has a simple set of features to monitor energy use. There
32 is a register that displays an estimate of raw energy consumption since the
37 range of energy and power use registers, the power cap as set by the AEM
|
| D | ltc2947.rst | 21 The LTC2947 is a high precision power and energy monitor that measures current,
22 voltage, power, temperature, charge and energy. The device supports both SPI
24 The device also measures accumulated quantities as energy. It has two banks of
25 register's to read/set energy related values. These banks can be configured
97 energy1_input Measured energy over time (in microJoule)
99 energy2_input Measured energy over time (in microJoule)
|
| /Linux-v5.15/net/bluetooth/ |
| D | Kconfig | 31 SMP (Security Manager Protocol) on LE (Low Energy) links
73 bool "Bluetooth Low Energy (LE) features"
77 Bluetooth Low Energy includes support low-energy physical
84 IPv6 compression over Bluetooth Low Energy.
135 Bluetooth Low Energy Secure Connections feature.
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| /Linux-v5.15/Documentation/devicetree/bindings/arm/ |
| D | idle-states.yaml | 51 timing and energy related properties, that underline the HW behaviour
81 IDLE: This is the actual energy-saving idle period. This may last
124 expressed in time units but must factor in energy consumption coefficients.
126 The energy consumption of a cpu when it enters a power state can be roughly
149 Graph 1: Energy vs time example
153 and denotes the energy costs incurred while entering and leaving the idle
156 shallower slope and essentially represents the energy consumption of the idle
161 which choosing that state become the most energy efficient option. A good
163 states energy consumptions plots.
187 |IDLE1-energy < IDLE2-energy | IDLE2-energy < IDLE1-energy
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| D | vexpress-sysreg.txt | 71 "arm,vexpress-energy"
86 - some functions (eg. energy meter, with its 64 bit long counter)
99 energy@0 {
100 compatible = "arm,vexpress-energy";
|
| /Linux-v5.15/tools/power/x86/x86_energy_perf_policy/ |
| D | x86_energy_perf_policy.8 | 5 x86_energy_perf_policy \- Manage Energy vs. Performance Policy via x86 Model Specific Registers
21 displays and updates energy-performance policy settings specific to
31 Further, it allows the OS to influence energy/performance trade-offs where there
82 Set a policy with a normal balance between performance and energy efficiency.
84 for potentially significant energy savings.
90 accepting no performance sacrifice for the benefit of energy efficiency.
94 but allowing some performance loss to benefit energy efficiency.
102 a measurable performance impact to maximize energy efficiency.
|
| /Linux-v5.15/Documentation/devicetree/bindings/hwmon/ |
| D | adi,ltc2947.yaml | 7 title: Analog Devices LTC2947 high precision power and energy monitor
13 Analog Devices LTC2947 high precision power and energy monitor over SPI or I2C.
29 charge and energy. When an external clock is used, this property must be
36 calculate charge and energy so that, they can be only accumulated for
68 the accumulation of charge, energy and time. This function can be
|
| D | vexpress.txt | 10 "arm,vexpress-energy"
19 energy@0 {
20 compatible = "arm,vexpress-energy";
|
| /Linux-v5.15/Documentation/admin-guide/pm/ |
| D | intel_epb.rst | 5 Intel Performance and Energy Bias Hint
16 Intel Performance and Energy Bias Attribute in ``sysfs``
19 The Intel Performance and Energy Bias Hint (EPB) value for a given (logical) CPU
27 and a value of 15 corresponds to the maximum energy savings.
|
| /Linux-v5.15/include/linux/mfd/ |
| D | ac100.h | 112 #define AC100_DAC_DAP_L_H_E_A_C 0xa3 /* Left High Energy Avg Coef */
113 #define AC100_DAC_DAP_L_L_E_A_C 0xa4 /* Left Low Energy Avg Coef */
114 #define AC100_DAC_DAP_R_H_E_A_C 0xa5 /* Right High Energy Avg Coef */
115 #define AC100_DAC_DAP_R_L_E_A_C 0xa6 /* Right Low Energy Avg Coef */
120 #define AC100_DAC_DAP_H_E_TH 0xab /* High Energy Threshold */
121 #define AC100_DAC_DAP_L_E_TH 0xac /* Low Energy Threshold */
|
| /Linux-v5.15/drivers/staging/iio/meter/ |
| D | Kconfig | 5 menu "Active energy metering IC"
8 tristate "Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver"
12 Multifunction Energy Metering IC Driver.
|
| /Linux-v5.15/drivers/net/wireless/intel/iwlwifi/fw/api/ |
| D | power.h | 71 /* Radio LP RX Energy Threshold measured in dBm */
483 * to driver if delta in Energy values calculated for this and last
485 * the Energy change is ignored for beacon filtering, and beacon will
487 * energy delta 5dB.
489 * Send beacon to driver if delta in Energy values calculated for this
491 * means that the Energy change is ignored for beacon filtering while in
492 * Roaming state, typical energy delta 1dB.
493 * @bf_roaming_state: Used for RSSI filtering. If absolute Energy values
495 * Roaming Energy Delta Threshold, otherwise use normal Energy Delta
496 * Threshold. Typical energy threshold is -72dBm.
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| /Linux-v5.15/drivers/misc/echo/ |
| D | echo.h | 72 band energy such as signalling tones or DTMF), the adaption can go seriously
77 canceller to converge on this kind of narrowband energy probably a good thing,
79 continue converging on such energy is just a way to ruin its generalised
94 energy is that we must do this very quickly. Given a reasonably long sample of
100 end energy.
|
| /Linux-v5.15/arch/sparc/include/asm/ |
| D | bbc.h | 27 #define BBC_ES_CTRL 0x0e /* [H] Energy Star Control */
167 /* Energy Star Control register. This register is used to generate the
182 /* Energy Star Assert Change Time register. This determines the number
189 /* Energy Star Assert Bypass Time register. This determines the number
196 /* Energy Star PLL Settle Time register. This determines the number of
203 /* Energy Star Frequency Switch Latency register. This is the number of
220 * is changed via Energy Star.
|
| /Linux-v5.15/tools/power/cpupower/man/ |
| D | cpupower-set.1 | 27 its policy for the relative importance of performance versus energy savings to
31 performance and 15 is maximum energy efficiency.
35 energy efficiency.
|
| /Linux-v5.15/Documentation/driver-api/xilinx/ |
| D | eemi.rst | 12 Embedded Energy Management Interface (EEMI)
14 The embedded energy management interface is used to allow software
39 [0] Embedded Energy Management Interface (EEMI) API guide:
|
| /Linux-v5.15/tools/perf/pmu-events/arch/arm64/fujitsu/a64fx/ |
| D | memory.json | 3 "PublicDescription": "This event counts energy consumption per cycle of CMG local memory.",
6 "BriefDescription": "This event counts energy consumption per cycle of CMG local memory."
|
| /Linux-v5.15/drivers/hwmon/ |
| D | ibmaem.c | 3 * A hwmon driver for the IBM System Director Active Energy Manager (AEM)
4 * temperature/power/energy sensors and capping functionality.
63 /* AEM 2.x has more energy registers */
145 * Energy meter
149 * Two energy meters
158 /* energy use in mJ */
159 u64 energy[AEM_NUM_ENERGY_REGS]; member
426 /* Update AEM energy registers */
430 &data->energy[which], 8); in update_aem_energy_one()
835 before = data->energy[attr->index]; in aem_show_power()
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