| /Linux-v5.15/Documentation/scheduler/ |
| D | sched-capacity.rst | 2 Capacity Aware Scheduling
5 1. CPU Capacity
16 CPU capacity is a measure of the performance a CPU can reach, normalized against
18 asymmetric CPU capacity systems, as they contain CPUs of different capacities.
20 Disparity in maximum attainable performance (IOW in maximum CPU capacity) stems
36 capacity(cpu) = work_per_hz(cpu) * max_freq(cpu)
41 Two different capacity values are used within the scheduler. A CPU's
42 ``capacity_orig`` is its maximum attainable capacity, i.e. its maximum
43 attainable performance level. A CPU's ``capacity`` is its ``capacity_orig`` to
47 Note that a CPU's ``capacity`` is solely intended to be used by the CFS class,
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| D | sched-energy.rst | 64 knowledge about the platform's topology, which include the 'capacity' of CPUs,
71 EAS (as well as the rest of the scheduler) uses the notion of 'capacity' to
72 differentiate CPUs with different computing throughput. The 'capacity' of a CPU
74 frequency compared to the most capable CPU of the system. Capacity values are
77 to capacity and utilization values, EAS is able to estimate how big/busy a
79 energy trade-offs. The capacity of CPUs is provided via arch-specific code
135 for the CPU with the highest spare capacity (CPU capacity - CPU utilization) in
161 The CPU capacity and power cost associated with each OPP is listed in
185 maximum spare capacity in the two performance domains. In this example,
283 being run, they will require all of the available CPU capacity, and there isn't
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| /Linux-v5.15/drivers/misc/vmw_vmci/ |
| D | vmci_handle_array.c | 11 static size_t handle_arr_calc_size(u32 capacity) in handle_arr_calc_size() argument
14 capacity * sizeof(struct vmci_handle); in handle_arr_calc_size()
17 struct vmci_handle_arr *vmci_handle_arr_create(u32 capacity, u32 max_capacity) in vmci_handle_arr_create() argument
21 if (max_capacity == 0 || capacity > max_capacity) in vmci_handle_arr_create()
24 if (capacity == 0) in vmci_handle_arr_create()
25 capacity = min((u32)VMCI_HANDLE_ARRAY_DEFAULT_CAPACITY, in vmci_handle_arr_create()
28 array = kmalloc(handle_arr_calc_size(capacity), GFP_ATOMIC); in vmci_handle_arr_create()
32 array->capacity = capacity; in vmci_handle_arr_create()
49 if (unlikely(array->size >= array->capacity)) { in vmci_handle_arr_append_entry()
52 u32 capacity_bump = min(array->max_capacity - array->capacity, in vmci_handle_arr_append_entry()
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| /Linux-v5.15/drivers/gpu/drm/amd/display/dc/basics/ |
| D | vector.c | 34 uint32_t capacity, in dal_vector_construct() argument
39 if (!struct_size || !capacity) { in dal_vector_construct()
45 vector->container = kcalloc(capacity, struct_size, GFP_KERNEL); in dal_vector_construct()
48 vector->capacity = capacity; in dal_vector_construct()
88 vector->capacity = count; in dal_vector_presized_costruct()
116 uint32_t capacity, in dal_vector_create() argument
124 if (dal_vector_construct(vector, ctx, capacity, struct_size)) in dal_vector_create()
137 vector->capacity = 0; in dal_vector_destruct()
212 if (vector->count == vector->capacity) { in dal_vector_insert_at()
215 calc_increased_capacity(vector->capacity))) in dal_vector_insert_at()
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| /Linux-v5.15/arch/arm/kernel/ |
| D | topology.c | 34 * cpu capacity scale management
38 * cpu capacity table
39 * This per cpu data structure describes the relative capacity of each core.
40 * On a heteregenous system, cores don't have the same computation capacity
61 * is used to compute the capacity of a CPU.
82 * 'average' CPU is of middle capacity. Also see the comments near
91 unsigned long capacity = 0; in parse_dt_topology() local
128 capacity = ((be32_to_cpup(rate)) >> 20) * cpu_eff->efficiency; in parse_dt_topology()
130 /* Save min capacity of the system */ in parse_dt_topology()
131 if (capacity < min_capacity) in parse_dt_topology()
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| /Linux-v5.15/Documentation/devicetree/bindings/arm/ |
| D | cpu-capacity.txt | 2 ARM CPUs capacity bindings
15 2 - CPU capacity definition
18 CPU capacity is a number that provides the scheduler information about CPUs
27 final capacity should, however, be:
43 3 - capacity-dmips-mhz
46 capacity-dmips-mhz is an optional cpu node [1] property: u32 value
47 representing CPU capacity expressed in normalized DMIPS/MHz. At boot time, the
48 maximum frequency available to the cpu is then used to calculate the capacity
51 capacity-dmips-mhz property is all-or-nothing: if it is specified for a cpu
53 fall back to the default capacity value for every CPU. If cpufreq is not
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| /Linux-v5.15/drivers/scsi/ |
| D | scsicam.c | 54 * @capacity: size of the disk in sectors
62 bool scsi_partsize(struct block_device *bdev, sector_t capacity, int geom[3]) in scsi_partsize() argument
126 geom[2] = (unsigned long)capacity / in scsi_partsize()
144 * Function : static int setsize(unsigned long capacity,unsigned int *cyls,
148 * SCSI disk in terms of lost space of size capacity, storing
167 * setsize() converts a read capacity value to int 13h
177 static int setsize(unsigned long capacity, unsigned int *cyls, unsigned int *hds, in setsize() argument
187 heads = capacity / temp; /* Compute value for number of heads */ in setsize()
188 if (capacity % temp) { /* If no remainder, done! */ in setsize()
191 sectors = capacity / temp; /* Compute value for sectors per in setsize()
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| D | sd_zbc.c | 62 zone.capacity = zone.len; in sd_zbc_parse_report()
196 sector_t capacity = logical_to_sectors(sdkp->device, sdkp->capacity); in sd_zbc_report_zones() local
207 if (!capacity) in sd_zbc_report_zones()
215 while (zone_idx < nr_zones && sector < capacity) { in sd_zbc_report_zones()
587 * sd_zbc_check_capacity - Check the device capacity
592 * Get the device zone size and check that the device capacity as reported
593 * by READ CAPACITY matches the max_lba value (plus one) of the report zones
612 /* The max_lba field is the capacity of this device */ in sd_zbc_check_capacity()
614 if (sdkp->capacity != max_lba + 1) { in sd_zbc_check_capacity()
617 "Changing capacity from %llu to max LBA+1 %llu\n", in sd_zbc_check_capacity()
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| /Linux-v5.15/Documentation/power/ |
| D | power_supply_class.rst | 61 | **Charge/Energy/Capacity - how to not confuse** |
63 | **Because both "charge" (µAh) and "energy" (µWh) represents "capacity" |
67 | attributes represents capacity in µAh only. |
69 | attributes represents capacity in µWh only. |
70 | - `CAPACITY` |
71 | attribute represents capacity in *percents*, from 0 to 100. |
108 between voltage and battery capacity, but some dumb
109 batteries use voltage for very approximated calculation of capacity.
146 (typically 20% of battery capacity).
151 this setting (typically 10% of battery capacity).
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| /Linux-v5.15/drivers/power/supply/ |
| D | sc27xx_fuel_gauge.c | 82 * @total_cap: the total capacity of the battery in mAh
83 * @init_cap: the initial capacity of the battery in mAh
84 * @alarm_cap: the alarm capacity
89 * @table_len: the capacity table length
94 * @cap_table: capacity table with corresponding ocv
124 static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity);
162 * We use low 4 bits to save the last battery capacity and high 12 bits in sc27xx_fgu_is_first_poweron()
281 * When system boots on, we can not read battery capacity from coulomb
284 * capacity according to the capacity table.
293 * battery capacity as the initial battery capacity. Otherwise we should in sc27xx_fgu_get_boot_capacity()
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| D | ab8500_fg.c | 174 * @init_capacity: Indicate if initial capacity measuring should be done
182 * @bat_cap: Structure for battery capacity specific parameters
183 * @avg_cap: Average capacity filter
373 * ab8500_fg_add_cap_sample() - Add capacity to average filter
375 * @sample: the capacity in mAh to add to the filter
377 * A capacity is added to the filter and a new mean capacity is calculated and
412 * The capacity filter is is reset to zero.
433 * @sample: the capacity in mAh to fill the filter with
435 * The capacity filter is filled with a capacity in mAh
848 * ab8500_fg_volt_to_capacity() - Voltage based capacity
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| D | acer_a500_battery.c | 38 [REG_CAPACITY] = EC_DATA(0x00, CAPACITY),
60 unsigned int capacity; member
65 unsigned int capacity; in a500_battery_update_capacity() local
68 err = regmap_read(bat->regmap, ec_data[REG_CAPACITY].reg, &capacity); in a500_battery_update_capacity()
72 /* capacity can be >100% even if max value is 100% */ in a500_battery_update_capacity()
73 capacity = min(capacity, 100u); in a500_battery_update_capacity()
75 if (bat->capacity != capacity) { in a500_battery_update_capacity()
76 bat->capacity = capacity; in a500_battery_update_capacity()
85 if (bat->capacity < 100) { in a500_battery_get_status()
164 val->intval = bat->capacity; in a500_battery_get_property()
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| D | ds2782_battery.c | 26 #define DS2782_REG_RARC 0x06 /* Remaining active relative capacity */
38 #define DS2786_REG_RARC 0x02 /* Remaining active relative capacity */
49 int (*get_battery_capacity)(struct ds278x_info *info, int *capacity);
62 int capacity; member
161 static int ds2782_get_capacity(struct ds278x_info *info, int *capacity) in ds2782_get_capacity() argument
169 *capacity = raw; in ds2782_get_capacity()
201 static int ds2786_get_capacity(struct ds278x_info *info, int *capacity) in ds2786_get_capacity() argument
209 /* Relative capacity is displayed with resolution 0.5 % */ in ds2786_get_capacity()
210 *capacity = raw/2 ; in ds2786_get_capacity()
218 int capacity; in ds278x_get_status() local
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| D | ab8500-bm.h | 295 * struct ab8500_v_to_cap - Table for translating voltage to capacity
297 * @capacity: Capacity in percent
301 int capacity; member
325 * @user_cap_limit Capacity reported from user must be within this
378 * @charge_full_design: Maximum battery capacity in mAh
382 * @recharge_cap battery capacity limit that will trigger a new
399 * @v_to_cap_tbl: Voltage to capacity (in %) table
432 * struct ab8500_bm_capacity_levels - ab8500 capacity level data
433 * @critical: critical capacity level in percent
434 * @low: low capacity level in percent
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| /Linux-v5.15/Documentation/devicetree/bindings/power/supply/ |
| D | battery.yaml | 64 description: battery design capacity
94 ocv-capacity-celsius:
97 for each of the battery capacity lookup table.
121 '^ocv-capacity-table-[0-9]+$':
125 of the battery and corresponding battery capacity percent, which is used
126 to look up battery capacity according to current OCV value. And the open
132 - description: battery capacity percent
157 ocv-capacity-celsius = <(-10) 0 10>;
159 ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>;
161 ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>;
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| /Linux-v5.15/kernel/cgroup/ |
| D | misc.c | 33 * Miscellaneous resources capacity for the entire machine. 0 capacity means
36 * root_cg.max and capacity are independent of each other. root_cg.max can be
37 * more than the actual capacity. We are using Limits resource distribution
87 * misc_cg_set_capacity() - Set the capacity of the misc cgroup res.
89 * @capacity: Supported capacity of the misc res on the host.
91 * If capacity is 0 then the charging a misc cgroup fails for that type.
95 * * %0 - Successfully registered the capacity.
98 int misc_cg_set_capacity(enum misc_res_type type, unsigned long capacity) in misc_cg_set_capacity() argument
103 WRITE_ONCE(misc_res_capacity[type], capacity); in misc_cg_set_capacity()
136 * * -EINVAL - If @type is invalid or misc res has 0 capacity.
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| /Linux-v5.15/kernel/sched/ |
| D | pelt.h | 11 int update_thermal_load_avg(u64 now, struct rq *rq, u64 capacity);
19 update_thermal_load_avg(u64 now, struct rq *rq, u64 capacity) in update_thermal_load_avg() argument
69 * @ max capacity ------******---------------******---------------
70 * @ half capacity ------************---------************---------
83 * When a rq runs at a lower compute capacity, it will need in update_rq_clock_pelt()
85 * capacity. In order to be invariant, we scale the delta to in update_rq_clock_pelt()
88 * disturb the load signal compared to max capacity. This in update_rq_clock_pelt()
122 * phase would be present at max capacity. As soon as the in update_idle_rq_clock_pelt()
178 update_thermal_load_avg(u64 now, struct rq *rq, u64 capacity) in update_thermal_load_avg() argument
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| /Linux-v5.15/arch/arm/boot/dts/ |
| D | exynos5420-cpus.dtsi | 66 capacity-dmips-mhz = <1024>;
78 capacity-dmips-mhz = <1024>;
90 capacity-dmips-mhz = <1024>;
102 capacity-dmips-mhz = <1024>;
114 capacity-dmips-mhz = <539>;
126 capacity-dmips-mhz = <539>;
138 capacity-dmips-mhz = <539>;
150 capacity-dmips-mhz = <539>;
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| D | exynos5422-cpus.dtsi | 65 capacity-dmips-mhz = <539>;
78 capacity-dmips-mhz = <539>;
91 capacity-dmips-mhz = <539>;
104 capacity-dmips-mhz = <539>;
117 capacity-dmips-mhz = <1024>;
130 capacity-dmips-mhz = <1024>;
143 capacity-dmips-mhz = <1024>;
156 capacity-dmips-mhz = <1024>;
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| /Linux-v5.15/arch/arm64/boot/dts/amlogic/ |
| D | meson-gxm.dtsi | 46 capacity-dmips-mhz = <1024>;
50 capacity-dmips-mhz = <1024>;
54 capacity-dmips-mhz = <1024>;
58 capacity-dmips-mhz = <1024>;
66 capacity-dmips-mhz = <1024>;
77 capacity-dmips-mhz = <1024>;
88 capacity-dmips-mhz = <1024>;
99 capacity-dmips-mhz = <1024>;
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| D | meson-g12b.dtsi | 51 capacity-dmips-mhz = <592>;
61 capacity-dmips-mhz = <592>;
71 capacity-dmips-mhz = <1024>;
81 capacity-dmips-mhz = <1024>;
91 capacity-dmips-mhz = <1024>;
101 capacity-dmips-mhz = <1024>;
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| /Linux-v5.15/arch/arm64/boot/dts/qcom/ |
| D | sdm660.dtsi | 90 capacity-dmips-mhz = <1024>;
96 capacity-dmips-mhz = <1024>;
102 capacity-dmips-mhz = <1024>;
108 capacity-dmips-mhz = <1024>;
114 capacity-dmips-mhz = <640>;
120 capacity-dmips-mhz = <640>;
126 capacity-dmips-mhz = <640>;
132 capacity-dmips-mhz = <640>;
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| /Linux-v5.15/drivers/base/ |
| D | arch_topology.c | 154 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) in topology_set_cpu_scale() argument
156 per_cpu(cpu_scale, cpu) = capacity; in topology_set_cpu_scale()
236 u64 capacity; in topology_normalize_cpu_scale() local
245 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
246 capacity_scale = max(capacity, capacity_scale); in topology_normalize_cpu_scale()
251 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
252 capacity = div64_u64(capacity << SCHED_CAPACITY_SHIFT, in topology_normalize_cpu_scale()
254 topology_set_cpu_scale(cpu, capacity); in topology_normalize_cpu_scale()
270 ret = of_property_read_u32(cpu_node, "capacity-dmips-mhz", in topology_parse_cpu_capacity()
300 pr_err("cpu_capacity: missing %pOF raw capacity\n", in topology_parse_cpu_capacity()
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| /Linux-v5.15/include/linux/sched/ |
| D | sd_flags.h | 89 * NEEDS_GROUPS: Per-CPU capacity is asymmetric between groups.
95 * capacity values.
99 * NEEDS_GROUPS: Per-CPU capacity is asymmetric between groups.
104 * Domain members share CPU capacity (i.e. SMT)
107 * CPU capacity.
108 * NEEDS_GROUPS: Capacity is shared between groups.
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| /Linux-v5.15/drivers/staging/fwserial/ |
| D | dma_fifo.c | 61 int capacity; in dma_fifo_alloc() local
67 capacity = size + align * open_limit + align * DMA_FIFO_GUARD; in dma_fifo_alloc()
68 fifo->data = kmalloc(capacity, gfp_mask); in dma_fifo_alloc()
82 fifo->capacity = capacity; in dma_fifo_alloc()
153 ofs = fifo->in % fifo->capacity; in dma_fifo_in()
154 l = min(n, fifo->capacity - ofs); in dma_fifo_in()
202 ofs = fifo->out % fifo->capacity; in dma_fifo_out_pend()
203 l = fifo->capacity - ofs; in dma_fifo_out_pend()
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