| /kernel/linux/linux-4.19/Documentation/x86/ |
| D | topology.txt | 8 The architecture-agnostic topology definitions are in
9 Documentation/cputopology.txt. This file holds x86-specific
14 Needless to say, code should use the generic functions - this file is *only*
32 - packages
33 - cores
34 - threads
43 Package-related topology information in the kernel:
45 - cpuinfo_x86.x86_max_cores:
49 - cpuinfo_x86.phys_proc_id:
54 - cpuinfo_x86.logical_id:
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| /kernel/linux/linux-5.10/Documentation/x86/ |
| D | topology.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 The architecture-agnostic topology definitions are in
12 Documentation/admin-guide/cputopology.rst. This file holds x86-specific
17 Needless to say, code should use the generic functions - this file is *only*
35 - packages
36 - cores
37 - threads
48 Package-related topology information in the kernel:
50 - cpuinfo_x86.x86_max_cores:
54 - cpuinfo_x86.x86_max_dies:
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| /kernel/linux/linux-4.19/arch/mips/kernel/ |
| D | smp-cps.c | 11 #include <linux/cpu.h>
21 #include <asm/mips-cps.h>
24 #include <asm/pm-cps.h>
26 #include <asm/smp-cps.h>
42 static unsigned core_vpe_count(unsigned int cluster, unsigned core) in core_vpe_count() argument
47 return mips_cps_numvps(cluster, core); in core_vpe_count()
73 /* Use the number of VPEs in cluster 0 core 0 for smp_num_siblings */ in cps_smp_setup()
77 for (v = 0; v < min_t(int, core_vpes, NR_CPUS - nvpes); v++) { in cps_smp_setup()
90 /* Indicate present CPUs (CPU being synonymous with VPE) */ in cps_smp_setup()
101 /* Core 0 is powered up (we're running on it) */ in cps_smp_setup()
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| /kernel/linux/linux-5.10/arch/mips/kernel/ |
| D | smp-cps.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <linux/cpu.h>
17 #include <asm/mips-cps.h>
20 #include <asm/pm-cps.h>
22 #include <asm/smp-cps.h>
38 static unsigned core_vpe_count(unsigned int cluster, unsigned core) in core_vpe_count() argument
43 return mips_cps_numvps(cluster, core); in core_vpe_count()
69 /* Use the number of VPEs in cluster 0 core 0 for smp_num_siblings */ in cps_smp_setup()
73 for (v = 0; v < min_t(int, core_vpes, NR_CPUS - nvpes); v++) { in cps_smp_setup()
86 /* Indicate present CPUs (CPU being synonymous with VPE) */ in cps_smp_setup()
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/arm/ |
| D | topology.txt | 6 1 - Introduction
12 - cluster
13 - core
14 - thread
16 The cpu nodes (bindings defined in [1]) represent the devices that
19 The bottom hierarchy level sits at core or thread level depending on whether
20 symmetric multi-threading (SMT) is supported or not.
22 For instance in a system where CPUs support SMT, "cpu" nodes represent all
24 In systems where SMT is not supported "cpu" nodes represent all cores present
25 in the system and map to the hierarchy level "core" above.
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| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | intel-speed-select.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 collection of features that give more granular control over CPU performance.
14 - https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-artic…
15 - https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enha…
19 dynamically without pre-configuring via BIOS setup options. This dynamic
29 intel-speed-select configuration tool
32 Most Linux distribution packages may include the "intel-speed-select" tool. If not,
38 # cd tools/power/x86/intel-speed-select/
43 ------------
47 # intel-speed-select --help
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/cpu/ |
| D | cpu-topology.txt | 2 CPU topology binding description
6 1 - Introduction
12 - socket
13 - cluster
14 - core
15 - thread
17 The bottom hierarchy level sits at core or thread level depending on whether
18 symmetric multi-threading (SMT) is supported or not.
20 For instance in a system where CPUs support SMT, "cpu" nodes represent all
22 In systems where SMT is not supported "cpu" nodes represent all cores present
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| /kernel/linux/linux-5.10/arch/powerpc/include/asm/ |
| D | cputhreads.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
13 * threads per core and the same number for each core in the system
15 * as the CPU numbers are still allocated, just not brought online).
35 /* cpu_thread_mask_to_cores - Return a cpumask of one per cores
40 * This function returns a cpumask which will have one online cpu's
41 * bit set for each core that has at least one thread set in the argument.
44 * since those need to be done only once per core/TLB
49 int i, cpu; in cpu_thread_mask_to_cores() local
55 cpu = cpumask_next_and(-1, &tmp, cpu_online_mask); in cpu_thread_mask_to_cores()
56 if (cpu < nr_cpu_ids) in cpu_thread_mask_to_cores()
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| /kernel/linux/linux-4.19/arch/arm64/kernel/ |
| D | topology.c | 17 #include <linux/cpu.h>
30 #include <asm/cpu.h>
37 int cpu; in get_cpu_for_node() local
39 cpu_node = of_parse_phandle(node, "cpu", 0); in get_cpu_for_node()
41 return -1; in get_cpu_for_node()
43 cpu = of_cpu_node_to_id(cpu_node); in get_cpu_for_node()
44 if (cpu >= 0) in get_cpu_for_node()
45 topology_parse_cpu_capacity(cpu_node, cpu); in get_cpu_for_node()
47 pr_crit("Unable to find CPU node for %pOF\n", cpu_node); in get_cpu_for_node()
50 return cpu; in get_cpu_for_node()
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| /kernel/linux/linux-5.10/arch/arm/mach-bcm/ |
| D | platsmp.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2014-2015 Broadcom Corporation
12 #include <linux/irqchip/irq-bcm2836.h>
34 #define OF_SECONDARY_BOOT "secondary-boot-reg"
54 return -ENXIO; in scu_a9_enable()
60 pr_err("hardware reports only one core\n"); in scu_a9_enable()
61 return -ENOENT; in scu_a9_enable()
68 return -ENOMEM; in scu_a9_enable()
78 static u32 secondary_boot_addr_for(unsigned int cpu) in secondary_boot_addr_for() argument
81 struct device_node *cpu_node = of_get_cpu_node(cpu, NULL); in secondary_boot_addr_for()
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| /kernel/linux/linux-5.10/tools/power/cpupower/lib/ |
| D | cpupower.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
23 if (fd == -1) in cpupower_read_sysfs()
26 numread = read(fd, buf, buflen - 1); in cpupower_read_sysfs()
39 * Detect whether a CPU is online
42 * 1 -> if CPU is online
43 * 0 -> if CPU is offline
46 int cpupower_is_cpu_online(unsigned int cpu) in cpupower_is_cpu_online() argument
56 snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u", cpu); in cpupower_is_cpu_online()
63 * -> cpuX directory exists, but not cpuX/online file in cpupower_is_cpu_online()
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| /kernel/linux/linux-4.19/tools/power/cpupower/lib/ |
| D | cpupower.c | 2 * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
24 if (fd == -1) in cpupower_read_sysfs()
27 numread = read(fd, buf, buflen - 1); in cpupower_read_sysfs()
40 * Detect whether a CPU is online
43 * 1 -> if CPU is online
44 * 0 -> if CPU is offline
47 int cpupower_is_cpu_online(unsigned int cpu) in cpupower_is_cpu_online() argument
57 snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u", cpu); in cpupower_is_cpu_online()
64 * -> cpuX directory exists, but not cpuX/online file in cpupower_is_cpu_online()
66 snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/online", cpu); in cpupower_is_cpu_online()
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| /kernel/linux/linux-4.19/arch/arm/mach-bcm/ |
| D | platsmp.c | 2 * Copyright (C) 2014-2015 Broadcom Corporation
20 #include <linux/irqchip/irq-bcm2836.h>
40 #define OF_SECONDARY_BOOT "secondary-boot-reg"
60 return -ENXIO; in scu_a9_enable()
66 pr_err("hardware reports only one core\n"); in scu_a9_enable()
67 return -ENOENT; in scu_a9_enable()
74 return -ENOMEM; in scu_a9_enable()
84 static u32 secondary_boot_addr_for(unsigned int cpu) in secondary_boot_addr_for() argument
87 struct device_node *cpu_node = of_get_cpu_node(cpu, NULL); in secondary_boot_addr_for()
90 pr_err("Failed to find device tree node for CPU%u\n", cpu); in secondary_boot_addr_for()
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| /kernel/linux/linux-4.19/arch/s390/numa/ |
| D | mode_emu.c | 1 // SPDX-License-Identifier: GPL-2.0
13 * Because the current Linux scheduler code requires a stable cpu to node
14 * mapping, cores are pinned to nodes when the first CPU thread is set online.
46 #define NODE_ID_FREE -1
49 enum toptree_level {CORE, MC, BOOK, DRAWER, NODE, TOPOLOGY}; enumerator
60 * Node to core pinning information updates are protected by
64 s32 to_node_id[CONFIG_NR_CPUS]; /* Pinned core to node mapping */
71 * Pin a core to a node
75 if (emu_cores->to_node_id[core_id] == NODE_ID_FREE) { in pin_core_to_node()
76 emu_cores->per_node[node_id]++; in pin_core_to_node()
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| /kernel/linux/linux-4.19/arch/powerpc/include/asm/ |
| D | cputhreads.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
13 * threads per core and the same number for each core in the system
15 * as the CPU numbers are still allocated, just not brought online).
34 /* cpu_thread_mask_to_cores - Return a cpumask of one per cores
39 * This function returns a cpumask which will have one online cpu's
40 * bit set for each core that has at least one thread set in the argument.
43 * since those need to be done only once per core/TLB
48 int i, cpu; in cpu_thread_mask_to_cores() local
54 cpu = cpumask_next_and(-1, &tmp, cpu_online_mask); in cpu_thread_mask_to_cores()
55 if (cpu < nr_cpu_ids) in cpu_thread_mask_to_cores()
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/regulator/ |
| D | nvidia,tegra-regulators-coupling.txt | 4 NVIDIA Tegra SoC's have a mandatory voltage-coupling between regulators.
9 ------------------------
11 On Tegra20 SoC's there are 3 coupled regulators: CORE, RTC and CPU.
12 The CORE and RTC voltages shall be in a range of 170mV from each other
13 and they both shall be higher than the CPU voltage by at least 120mV.
16 ------------------------
18 On Tegra30 SoC's there are 2 coupled regulators: CORE and CPU. The CORE
19 and CPU voltages shall be in a range of 300mV from each other and CORE
20 voltage shall be higher than the CPU by N mV, where N depends on the CPU
24 - nvidia,tegra-core-regulator: Boolean property that designates regulator
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| /kernel/linux/linux-5.10/arch/c6x/boot/dts/ |
| D | tms320c6678.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
4 #address-cells = <1>;
5 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 cpu@0 {
12 device_type = "cpu";
16 cpu@1 {
17 device_type = "cpu";
21 cpu@2 {
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| /kernel/linux/linux-4.19/arch/c6x/boot/dts/ |
| D | tms320c6678.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
4 #address-cells = <1>;
5 #size-cells = <1>;
8 #address-cells = <1>;
9 #size-cells = <0>;
11 cpu@0 {
12 device_type = "cpu";
16 cpu@1 {
17 device_type = "cpu";
21 cpu@2 {
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/arm/msm/ |
| D | qcom,idle-state.txt | 3 ARM provides idle-state node to define the cpuidle states, as defined in [1].
4 cpuidle-qcom is the cpuidle driver for Qualcomm SoCs and uses these idle
6 The idle states supported by the QCOM SoC are defined as -
14 When the WFI instruction is executed the ARM core would gate its internal
17 interrupt to trigger the core back in to active. This triggers the cache
20 cache hierarchy is also out of standby, and then the cpu is allowed to resume
26 Retention: Retention is a low power state where the core is clock gated and
27 the memory and the registers associated with the core are retained. The
30 sequence and would wait for interrupt, before restoring the cpu to execution
33 Standalone PC: A cpu can power down and warmboot if there is a sufficient time
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/arm/msm/ |
| D | qcom,idle-state.txt | 3 ARM provides idle-state node to define the cpuidle states, as defined in [1].
4 cpuidle-qcom is the cpuidle driver for Qualcomm SoCs and uses these idle
6 The idle states supported by the QCOM SoC are defined as -
14 When the WFI instruction is executed the ARM core would gate its internal
17 interrupt to trigger the core back in to active. This triggers the cache
20 cache hierarchy is also out of standby, and then the cpu is allowed to resume
26 Retention: Retention is a low power state where the core is clock gated and
27 the memory and the registers associated with the core are retained. The
30 sequence and would wait for interrupt, before restoring the cpu to execution
33 Standalone PC: A cpu can power down and warmboot if there is a sufficient time
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| /kernel/linux/linux-5.10/tools/perf/util/ |
| D | evsel.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Parts came from builtin-{top,stat,record}.c, see those files for further
15 #include <traceevent/event-parse.h>
43 #include "trace-event.h"
48 #include "../perf-sys.h"
49 #include "util/parse-branch-options.h"
88 return -EINVAL; in evsel__object_config()
102 #define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y))
121 * __perf_evsel__calc_id_pos - calculate id_pos.
136 return -1; in __perf_evsel__calc_id_pos()
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| D | evsel.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
28 /** struct evsel - event selector
30 * @evlist - evlist this evsel is in, if it is in one.
31 * @core - libperf evsel object
32 * @name - Can be set to retain the original event name passed by the user,
39 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
40 * is used there is an id sample appended to non-sample events
44 struct perf_evsel core; member
53 * These fields can be set in the parse-events code or similar.
158 return perf_evsel__cpus(&evsel->core); in evsel__cpus()
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| D | mmap.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011-2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
5 * Parts came from evlist.c builtin-{top,stat,record}.c, see those files for further
34 len = bitmap_scnprintf(mask->bits, mask->nbits, buf, MASK_SIZE); in mmap_cpu_mask__scnprintf()
36 pr_debug("%p: %s mask[%zd]: %s\n", mask, tag, mask->nbits, buf); in mmap_cpu_mask__scnprintf()
41 return perf_mmap__mmap_len(&map->core); in mmap__mmap_len()
73 return map->aio.nr_cblocks > 0; in perf_mmap__aio_enabled()
79 map->aio.data[idx] = mmap(NULL, mmap__mmap_len(map), PROT_READ|PROT_WRITE, in perf_mmap__aio_alloc()
81 if (map->aio.data[idx] == MAP_FAILED) { in perf_mmap__aio_alloc()
82 map->aio.data[idx] = NULL; in perf_mmap__aio_alloc()
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| /kernel/linux/linux-5.10/drivers/base/ |
| D | arch_topology.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Arch specific cpu topology information
10 #include <linux/cpu.h>
61 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) in topology_set_cpu_scale() argument
63 per_cpu(cpu_scale, cpu) = capacity; in topology_set_cpu_scale()
71 int cpu; in topology_set_thermal_pressure() local
73 for_each_cpu(cpu, cpus) in topology_set_thermal_pressure()
74 WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure); in topology_set_thermal_pressure()
81 struct cpu *cpu = container_of(dev, struct cpu, dev); in cpu_capacity_show() local
83 return sysfs_emit(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id)); in cpu_capacity_show()
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| /kernel/linux/linux-4.19/arch/mips/netlogic/xlp/ |
| D | wakeup.c | 2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
39 #include <asm/asm-offsets.h>
46 #include <asm/netlogic/mips-extns.h>
48 #include <asm/netlogic/xlp-hal/iomap.h>
49 #include <asm/netlogic/xlp-hal/xlp.h>
50 #include <asm/netlogic/xlp-hal/pic.h>
51 #include <asm/netlogic/xlp-hal/sys.h>
53 static int xlp_wakeup_core(uint64_t sysbase, int node, int core) in xlp_wakeup_core() argument
58 coremask = (1 << core); in xlp_wakeup_core()
60 /* Enable CPU clock in case of 8xx/3xx */ in xlp_wakeup_core()
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