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/linux/Documentation/arch/x86/
H A Dtopology.rst1 .. 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 - topology_num_threads_per_package()
54 - topology_num_cores_per_package()
[all …]
/linux/tools/perf/tests/
H A Dtopology.c1 // SPDX-License-Identifier: GPL-2.0
14 #define TEMPL "/tmp/perf-test-XXXXXX"
26 return -1; in get_temp()
44 session->evlist = evlist__new_default(); in session_write_header()
45 TEST_ASSERT_VAL("can't get evlist", session->evlist); in session_write_header()
46 session->evlist->session = session; in session_write_header()
48 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); in session_write_header()
49 perf_header__set_feat(&session->header, HEADER_NRCPUS); in session_write_header()
50 perf_header__set_feat(&session->header, HEADER_ARCH); in session_write_header()
52 session->header.data_size += DATA_SIZE; in session_write_header()
[all …]
/linux/Documentation/admin-guide/pm/
H A Dintel-speed-select.rst1 .. 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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/linux/arch/mips/kernel/
H A Dsmp-cps.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <linux/cpu.h>
19 #include <asm/mips-cps.h>
22 #include <asm/pm-cps.h>
26 #include <asm/smp-cps.h>
78 timeout--; in power_up_other_cluster()
89 static unsigned __init core_vpe_count(unsigned int cluster, unsigned core) in core_vpe_count() argument
91 return min(smp_max_threads, mips_cps_numvps(cluster, core)); in core_vpe_count()
159 0x0, CSEGX_SIZE - 1); in allocate_cps_vecs()
172 end = SZ_4G - 1; in allocate_cps_vecs()
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/linux/tools/perf/pmu-events/arch/x86/haswell/
H A Dhsw-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/tools/perf/util/
H A Dbpf_counter_cgroup.c1 // SPDX-License-Identifier: GPL-2.0
43 #define FD(evt, cpu) (*(int *)xyarray__entry(evt->core.fd, cpu, 0)) argument
51 struct perf_cpu cpu; in bperf_load_program() local
52 int total_cpus = cpu__max_cpu().cpu; in bperf_load_program()
59 return -1; in bperf_load_program()
62 skel->rodata->num_cpus = total_cpus; in bperf_load_program()
63 skel->rodata->num_events = evlist->core.nr_entries / nr_cgroups; in bperf_load_program()
66 skel->rodata->use_cgroup_v2 = 1; in bperf_load_program()
68 BUG_ON(evlist->core.nr_entries % nr_cgroups != 0); in bperf_load_program()
70 /* we need one copy of events per cpu for reading */ in bperf_load_program()
[all …]
H A Dmmap.c1 // 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->cor in mmap__mmap_len()
97 perf_mmap__aio_bind(struct mmap * map,int idx,struct perf_cpu cpu,int affinity) perf_mmap__aio_bind() argument
246 struct perf_cpu cpu; build_node_mask() local
276 mmap__mmap(struct mmap * map,struct mmap_params * mp,int fd,struct perf_cpu cpu) mmap__mmap() argument
[all...]
H A Dcpumap.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 /** Identify where counts are aggregated, -1 implies not to aggregate. */
17 * /sys/devices/system/cpu/cpuX/topology/physical_package_id.
20 /** The die id as read from /sys/devices/system/cpu/cpuX/topology/die_id. */
22 /** The cluster id as read from /sys/devices/system/cpu/cpuX/topology/cluster_id */
24 /** The cache level as read from /sys/devices/system/cpu/cpuX/cache/indexY/level */
27 * The cache instance ID, which is the first CPU in the
28 * /sys/devices/system/cpu/cpu
33 int core; global() member
35 struct perf_cpu cpu; global() member
[all...]
H A Dperf_api_probe.c1 /* SPDX-License-Identifier: GPL-2.0 */
3 #include "perf-sys.h"
7 #include "util/parse-events.h"
14 static int perf_do_probe_api(setup_probe_fn_t fn, struct perf_cpu cpu, const char *str) in perf_do_probe_api() argument
19 int err = -EAGAIN, fd; in perf_do_probe_api()
20 static pid_t pid = -1; in perf_do_probe_api()
24 return -ENOMEM; in perf_do_probe_api()
32 fd = sys_perf_event_open(&evsel->core.attr, pid, cpu.cpu, -1, flags); in perf_do_probe_api()
34 if (pid == -1 && errno == EACCES) { in perf_do_probe_api()
46 fd = sys_perf_event_open(&evsel->core.attr, pid, cpu.cpu, -1, flags); in perf_do_probe_api()
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/linux/arch/arm/mach-bcm/
H A Dplatsmp.c1 // 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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/linux/arch/powerpc/include/asm/
H A Dcputhreads.h1 /* 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).
41 int cpu_core_index_of_thread(int cpu);
42 int cpu_first_thread_of_core(int core);
44 static inline int cpu_core_index_of_thread(int cpu) { return cpu; } in cpu_core_index_of_thread() argument
45 static inline int cpu_first_thread_of_core(int core) { return core; } in cpu_first_thread_of_core() argument
48 static inline int cpu_thread_in_core(int cpu) in cpu_thread_in_core() argument
50 return cpu & (threads_per_core - 1); in cpu_thread_in_core()
53 static inline int cpu_thread_in_subcore(int cpu) in cpu_thread_in_subcore() argument
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/linux/tools/perf/pmu-events/arch/x86/haswellx/
H A Dhsx-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/tools/perf/pmu-events/arch/x86/grandridge/
H A Duncore-io.json228 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
239 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
251 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
263 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
275 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
287 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
299 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
311 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
323 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
335 "BriefDescription": "Data requested by the CPU : Core writing to Cards MMIO space",
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/linux/Documentation/devicetree/bindings/regulator/
H A Dnvidia,tegra-regulators-coupling.txt4 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
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwell/
H A Dbdw-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwellde/
H A Dbdwde-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/tools/perf/pmu-events/arch/x86/ivybridge/
H A Divb-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/tools/perf/pmu-events/arch/x86/ivytown/
H A Divt-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/arch/mips/loongson64/
H A Dsmp.c1 // SPDX-License-Identifier: GPL-2.0-or-later
9 #include <linux/cpu.h>
37 static u32 (*ipi_read_clear)(int cpu);
38 static void (*ipi_write_action)(int cpu, u32 action);
39 static void (*ipi_write_enable)(int cpu);
40 static void (*ipi_clear_buf)(int cpu);
41 static void (*ipi_write_buf)(int cpu, struct task_struct *idle);
43 /* send mail via Mail_Send register for 3A4000+ CPU */
44 static void csr_mail_send(uint64_t data, int cpu, int mailbox) in csr_mail_send() argument
51 val |= (cpu << CSR_MAIL_SEND_CPU_SHIFT); in csr_mail_send()
[all …]
/linux/tools/perf/pmu-events/arch/x86/graniterapids/
H A Duncore-io.json228 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
240 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
252 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
264 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
276 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
288 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
300 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
312 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
324 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
336 "BriefDescription": "Data requested by the CPU : Core writing to Cards MMIO space",
[all …]
/linux/tools/perf/pmu-events/arch/x86/sierraforest/
H A Duncore-io.json228 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
240 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
252 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
264 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
276 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
288 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
300 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
312 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
324 …"BriefDescription": "Data requested by the CPU : Core reporting completion of Card read from Core …
336 "BriefDescription": "Data requested by the CPU : Core writing to Cards MMIO space",
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwellx/
H A Dbdx-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / msr@tsc@",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / msr@tsc@",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / msr@tsc@",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / msr@tsc@",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / msr@tsc@",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / msr@tsc@",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / msr@tsc@",
[all …]
/linux/drivers/watchdog/
H A Docteon-wdt-main.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2007-2017 Cavium, Inc.
11 * (c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
16 * "AS-IS" and at no charge.
39 * A watchdog is maintained for each CPU in the system, that way if
40 * one CPU suffers a lockup, we also get a register dump and reset.
55 #include <linux/cpu.h>
63 #include <asm/octeon/cvmx-boot-vector.h>
64 #include <asm/octeon/cvmx-ciu2-defs.h>
65 #include <asm/octeon/cvmx-rst-defs.h>
[all …]
/linux/arch/powerpc/perf/
H A Dimc-pmu.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * In-Memory Collection (IMC) Performance Monitor counter support.
13 #include <asm/imc-pmu.h>
22 * Used to avoid races in counting the nest-pmu units during hotplug
32 /* Core IMC data structures and variables */
51 * core and trace-imc
61 return container_of(event->pmu, struct imc_pmu, pmu); in imc_event_to_pmu()
64 PMU_FORMAT_ATTR(event, "config:0-61");
65 PMU_FORMAT_ATTR(offset, "config:0-31");
67 PMU_FORMAT_ATTR(mode, "config:33-40");
[all …]
/linux/drivers/cpuidle/
H A Dcpuidle-cps.c1 // SPDX-License-Identifier: GPL-2.0-or-later
12 #include <asm/pm-cps.h>
17 STATE_NC_WAIT, /* MIPS wait instruction, non-coherent */
18 STATE_CLOCK_GATED, /* Core clock gated */
19 STATE_POWER_GATED, /* Core power gated */
30 * At least one core must remain powered up & clocked in order for the in cps_nc_enter()
33 * TODO: don't treat core 0 specially, just prevent the final core in cps_nc_enter()
36 if (cpus_are_siblings(0, dev->cpu) && (index > STATE_NC_WAIT)) in cps_nc_enter()
52 return -EINVAL; in cps_nc_enter()
55 /* Notify listeners the CPU is about to power down */ in cps_nc_enter()
[all …]

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