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/linux-6.14.4/Documentation/arch/x86/
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-6.14.4/tools/perf/tests/
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()
47 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); in session_write_header()
48 perf_header__set_feat(&session->header, HEADER_NRCPUS); in session_write_header()
49 perf_header__set_feat(&session->header, HEADER_ARCH); in session_write_header()
51 session->header.data_size += DATA_SIZE; in session_write_header()
54 !perf_session__write_header(session, session->evlist, data.file.fd, true)); in session_write_header()
[all …]
/linux-6.14.4/arch/mips/kernel/
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>
45 static unsigned __init core_vpe_count(unsigned int cluster, unsigned core) in core_vpe_count() argument
47 return min(smp_max_threads, mips_cps_numvps(cluster, core)); in core_vpe_count()
115 0x0, CSEGX_SIZE - 1); in allocate_cps_vecs()
128 end = SZ_4G - 1; in allocate_cps_vecs()
142 return -ENOMEM; in allocate_cps_vecs()
[all …]
/linux-6.14.4/Documentation/devicetree/bindings/cpu/
Dcpu-topology.txt2 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
[all …]
/linux-6.14.4/Documentation/admin-guide/pm/
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
[all …]
/linux-6.14.4/tools/perf/util/
Dbpf_counter_cgroup.c1 // SPDX-License-Identifier: GPL-2.0
42 #define FD(evt, cpu) (*(int *)xyarray__entry(evt->core.fd, cpu, 0)) argument
50 struct perf_cpu cpu; in bperf_load_program() local
51 int total_cpus = cpu__max_cpu().cpu; in bperf_load_program()
58 return -1; in bperf_load_program()
61 skel->rodata->num_cpus = total_cpus; in bperf_load_program()
62 skel->rodata->num_events = evlist->core.nr_entries / nr_cgroups; in bperf_load_program()
65 skel->rodata->use_cgroup_v2 = 1; in bperf_load_program()
67 BUG_ON(evlist->core.nr_entries % nr_cgroups != 0); in bperf_load_program()
69 /* we need one copy of events per cpu for reading */ in bperf_load_program()
[all …]
Dmmap.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011-2017, Red Hat Inc, Arnaldo Carvalho de Melo <[email protected]>
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()
[all …]
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/cpuX/cache/indexY/shared_cpu_list
31 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */
32 int core; member
[all …]
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()
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/haswell/
Dhsw-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/arch/powerpc/include/asm/
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
[all …]
/linux-6.14.4/arch/arm/mach-bcm/
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()
[all …]
/linux-6.14.4/tools/power/cpupower/lib/
Dcpupower.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * (C) 2004-2009 Dominik Brodowski <[email protected]>
19 if (access(path, F_OK) == -1) in is_valid_path()
30 if (fd == -1) in cpupower_read_sysfs()
33 numread = read(fd, buf, buflen - 1); in cpupower_read_sysfs()
51 if (fd == -1) in cpupower_write_sysfs()
54 numwritten = write(fd, buf, buflen - 1); in cpupower_write_sysfs()
58 return -1; in cpupower_write_sysfs()
67 * Detect whether a CPU is online
70 * 1 -> if CPU is online
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/linux-6.14.4/tools/perf/pmu-events/arch/x86/haswellx/
Dhsx-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/grandridge/
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",
[all …]
/linux-6.14.4/Documentation/devicetree/bindings/regulator/
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-6.14.4/drivers/platform/x86/intel/ifs/
Druntest.c1 // SPDX-License-Identifier: GPL-2.0-only
4 #include <linux/cpu.h>
15 * ifs_sem. On HT systems all threads on a core will
17 * core will update results of the test.
40 * Number of TSC cycles that a logical CPU will wait for the other
41 * logical CPU on the core in the WRMSR(ACTIVATE_SCAN).
65 "Core Abort SCAN Response due to power management condition.",
68 [IFS_CORE_NOT_CAPABLE_CURRENTLY] = "Core not capable of performing SCAN currently",
71 "Exceeded number of Logical Processors (LP) allowed to run Scan-At-Field concurrently",
77 static void message_not_tested(struct device *dev, int cpu, union ifs_status status) in message_not_tested() argument
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/broadwell/
Dbdw-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/broadwellde/
Dbdwde-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/drivers/of/
Dcpu.c1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/cpu.h>
7 * of_get_cpu_hwid - Get the hardware ID from a CPU device node
9 * @cpun: CPU number(logical index) for which device node is required
12 * Return: The hardware ID for the CPU node or ~0ULL if not found.
29 * arch_match_cpu_phys_id - Match the given logical CPU and physical id
31 * @cpu: logical cpu index of a core/thread
32 * @phys_id: physical identifier of a core/thread
34 * CPU logical to physical index mapping is architecture specific.
36 * id to logical cpu index. phys_id provided here is usually values read
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/sierraforest/
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-6.14.4/tools/perf/pmu-events/arch/x86/graniterapids/
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-6.14.4/tools/perf/pmu-events/arch/x86/ivybridge/
Divb-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/tools/perf/pmu-events/arch/x86/ivytown/
Divt-metrics.json4 "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC",
10 "BriefDescription": "C3 residency percent per core",
11 "MetricExpr": "cstate_core@c3\\-residency@ / TSC",
18 "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC",
24 "BriefDescription": "C6 residency percent per core",
25 "MetricExpr": "cstate_core@c6\\-residency@ / TSC",
32 "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC",
38 "BriefDescription": "C7 residency percent per core",
39 "MetricExpr": "cstate_core@c7\\-residency@ / TSC",
46 "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC",
[all …]
/linux-6.14.4/arch/mips/loongson64/
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 …]

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