| /kernel/linux/linux-5.10/tools/lib/perf/ |
| D | cpumap.c | 15 struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + sizeof(int)); in perf_cpu_map__dummy_new() local
17 if (cpus != NULL) { in perf_cpu_map__dummy_new()
18 cpus->nr = 1; in perf_cpu_map__dummy_new()
19 cpus->map[0] = -1; in perf_cpu_map__dummy_new()
20 refcount_set(&cpus->refcnt, 1); in perf_cpu_map__dummy_new()
23 return cpus; in perf_cpu_map__dummy_new()
50 struct perf_cpu_map *cpus; in cpu_map__default_new() local
57 cpus = malloc(sizeof(*cpus) + nr_cpus * sizeof(int)); in cpu_map__default_new()
58 if (cpus != NULL) { in cpu_map__default_new()
62 cpus->map[i] = i; in cpu_map__default_new()
[all …]
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| D | evlist.c | 42 * We already have cpus for evsel (via PMU sysfs) so in __perf_evlist__propagate_maps()
46 perf_cpu_map__put(evsel->cpus); in __perf_evlist__propagate_maps()
47 evsel->cpus = perf_cpu_map__get(evlist->cpus); in __perf_evlist__propagate_maps()
48 } else if (!evsel->system_wide && perf_cpu_map__empty(evlist->cpus)) { in __perf_evlist__propagate_maps()
49 perf_cpu_map__put(evsel->cpus); in __perf_evlist__propagate_maps()
50 evsel->cpus = perf_cpu_map__get(evlist->cpus); in __perf_evlist__propagate_maps()
51 } else if (evsel->cpus != evsel->own_cpus) { in __perf_evlist__propagate_maps()
52 perf_cpu_map__put(evsel->cpus); in __perf_evlist__propagate_maps()
53 evsel->cpus = perf_cpu_map__get(evsel->own_cpus); in __perf_evlist__propagate_maps()
58 evlist->all_cpus = perf_cpu_map__merge(evlist->all_cpus, evsel->cpus); in __perf_evlist__propagate_maps()
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| /kernel/linux/linux-6.6/tools/lib/perf/ |
| D | cpumap.c | 20 RC_STRUCT(perf_cpu_map) *cpus = malloc(sizeof(*cpus) + sizeof(struct perf_cpu) * nr_cpus); in perf_cpu_map__alloc()
23 if (ADD_RC_CHK(result, cpus)) { in perf_cpu_map__alloc()
24 cpus->nr = nr_cpus; in perf_cpu_map__alloc()
25 refcount_set(&cpus->refcnt, 1); in perf_cpu_map__alloc()
32 struct perf_cpu_map *cpus = perf_cpu_map__alloc(1); in perf_cpu_map__dummy_new() local
34 if (cpus) in perf_cpu_map__dummy_new()
35 RC_CHK_ACCESS(cpus)->map[0].cpu = -1; in perf_cpu_map__dummy_new()
37 return cpus; in perf_cpu_map__dummy_new()
71 struct perf_cpu_map *cpus; in cpu_map__default_new() local
78 cpus = perf_cpu_map__alloc(nr_cpus); in cpu_map__default_new()
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| /kernel/linux/linux-5.10/drivers/cpuidle/ |
| D | coupled.c | 3 * coupled.c - helper functions to enter the same idle state on multiple cpus
24 * cpus cannot be independently powered down, either due to
31 * shared between the cpus (L2 cache, interrupt controller, and
33 * be tightly controlled on both cpus.
36 * WFI state until all cpus are ready to enter a coupled state, at
38 * cpus at approximately the same time.
40 * Once all cpus are ready to enter idle, they are woken by an smp
42 * cpus will find work to do, and choose not to enter idle. A
43 * final pass is needed to guarantee that all cpus will call the
46 * ready counter matches the number of online coupled cpus. If any
[all …]
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| /kernel/linux/linux-6.6/drivers/cpuidle/ |
| D | coupled.c | 3 * coupled.c - helper functions to enter the same idle state on multiple cpus
24 * cpus cannot be independently powered down, either due to
31 * shared between the cpus (L2 cache, interrupt controller, and
33 * be tightly controlled on both cpus.
36 * WFI state until all cpus are ready to enter a coupled state, at
38 * cpus at approximately the same time.
40 * Once all cpus are ready to enter idle, they are woken by an smp
42 * cpus will find work to do, and choose not to enter idle. A
43 * final pass is needed to guarantee that all cpus will call the
46 * ready counter matches the number of online coupled cpus. If any
[all …]
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| /kernel/linux/linux-6.6/Documentation/timers/ |
| D | no_hz.rst | 19 2. Omit scheduling-clock ticks on idle CPUs (CONFIG_NO_HZ_IDLE=y or
23 3. Omit scheduling-clock ticks on CPUs that are either idle or that
65 Omit Scheduling-Clock Ticks For Idle CPUs
78 scheduling-clock interrupts to idle CPUs, which is critically important
86 idle CPUs. That said, dyntick-idle mode is not free:
104 Omit Scheduling-Clock Ticks For CPUs With Only One Runnable Task
109 Note that omitting scheduling-clock ticks for CPUs with only one runnable
110 task implies also omitting them for idle CPUs.
113 sending scheduling-clock interrupts to CPUs with a single runnable task,
114 and such CPUs are said to be "adaptive-ticks CPUs". This is important
[all …]
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| /kernel/linux/linux-6.6/Documentation/admin-guide/cgroup-v1/ |
| D | cpusets.rst | 31 2.2 Adding/removing cpus
43 Cpusets provide a mechanism for assigning a set of CPUs and Memory
57 include CPUs in its CPU affinity mask, and using the mbind(2) and
60 CPUs or Memory Nodes not in that cpuset. The scheduler will not
67 cpusets and which CPUs and Memory Nodes are assigned to each cpuset,
75 The management of large computer systems, with many processors (CPUs),
113 Cpusets provide a Linux kernel mechanism to constrain which CPUs and
117 CPUs a task may be scheduled (sched_setaffinity) and on which Memory
122 - Cpusets are sets of allowed CPUs and Memory Nodes, known to the
126 - Calls to sched_setaffinity are filtered to just those CPUs
[all …]
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| /kernel/linux/linux-5.10/Documentation/admin-guide/cgroup-v1/ |
| D | cpusets.rst | 31 2.2 Adding/removing cpus
43 Cpusets provide a mechanism for assigning a set of CPUs and Memory
57 include CPUs in its CPU affinity mask, and using the mbind(2) and
60 CPUs or Memory Nodes not in that cpuset. The scheduler will not
67 cpusets and which CPUs and Memory Nodes are assigned to each cpuset,
75 The management of large computer systems, with many processors (CPUs),
113 Cpusets provide a Linux kernel mechanism to constrain which CPUs and
117 CPUs a task may be scheduled (sched_setaffinity) and on which Memory
122 - Cpusets are sets of allowed CPUs and Memory Nodes, known to the
126 - Calls to sched_setaffinity are filtered to just those CPUs
[all …]
|
| /kernel/linux/linux-5.10/Documentation/timers/ |
| D | no_hz.rst | 19 2. Omit scheduling-clock ticks on idle CPUs (CONFIG_NO_HZ_IDLE=y or
23 3. Omit scheduling-clock ticks on CPUs that are either idle or that
65 Omit Scheduling-Clock Ticks For Idle CPUs
74 scheduling-clock interrupts to idle CPUs, which is critically important
82 idle CPUs. That said, dyntick-idle mode is not free:
104 Omit Scheduling-Clock Ticks For CPUs With Only One Runnable Task
109 Note that omitting scheduling-clock ticks for CPUs with only one runnable
110 task implies also omitting them for idle CPUs.
113 sending scheduling-clock interrupts to CPUs with a single runnable task,
114 and such CPUs are said to be "adaptive-ticks CPUs". This is important
[all …]
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| /kernel/linux/linux-5.10/tools/perf/tests/ |
| D | openat-syscall-all-cpus.c | 26 struct perf_cpu_map *cpus; in test__openat_syscall_event_on_all_cpus() local
39 cpus = perf_cpu_map__new(NULL); in test__openat_syscall_event_on_all_cpus()
40 if (cpus == NULL) { in test__openat_syscall_event_on_all_cpus()
54 if (evsel__open(evsel, cpus, threads) < 0) { in test__openat_syscall_event_on_all_cpus()
61 for (cpu = 0; cpu < cpus->nr; ++cpu) { in test__openat_syscall_event_on_all_cpus()
66 * without CPU_ALLOC. 1024 cpus in 2010 still seems in test__openat_syscall_event_on_all_cpus()
69 if (cpus->map[cpu] >= CPU_SETSIZE) { in test__openat_syscall_event_on_all_cpus()
70 pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); in test__openat_syscall_event_on_all_cpus()
74 CPU_SET(cpus->map[cpu], &cpu_set); in test__openat_syscall_event_on_all_cpus()
77 cpus->map[cpu], in test__openat_syscall_event_on_all_cpus()
[all …]
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| /kernel/linux/linux-6.6/tools/lib/perf/tests/ |
| D | test-cpumap.c | 16 struct perf_cpu_map *cpus; in test_cpumap() local
24 cpus = perf_cpu_map__dummy_new(); in test_cpumap()
25 if (!cpus) in test_cpumap()
28 perf_cpu_map__get(cpus); in test_cpumap()
29 perf_cpu_map__put(cpus); in test_cpumap()
30 perf_cpu_map__put(cpus); in test_cpumap()
32 cpus = perf_cpu_map__default_new(); in test_cpumap()
33 if (!cpus) in test_cpumap()
36 perf_cpu_map__for_each_cpu(cpu, idx, cpus) in test_cpumap()
39 perf_cpu_map__put(cpus); in test_cpumap()
|
| /kernel/linux/linux-5.10/tools/perf/arch/arm64/util/ |
| D | header.c | 17 static int _get_cpuid(char *buf, size_t sz, struct perf_cpu_map *cpus) in _get_cpuid() argument
26 cpus = perf_cpu_map__get(cpus); in _get_cpuid()
28 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) { in _get_cpuid()
33 sysfs, cpus->map[cpu]); in _get_cpuid()
57 perf_cpu_map__put(cpus); in _get_cpuid()
67 struct perf_cpu_map *cpus = perf_cpu_map__new(NULL); in get_cpuid() local
70 if (!cpus) in get_cpuid()
73 ret = _get_cpuid(buf, sz, cpus); in get_cpuid()
75 perf_cpu_map__put(cpus); in get_cpuid()
85 if (!pmu || !pmu->cpus) in get_cpuid_str()
[all …]
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| /kernel/linux/linux-5.10/include/linux/ |
| D | stop_machine.h | 13 * function to be executed on a single or multiple cpus preempting all
14 * other processes and monopolizing those cpus until it finishes.
18 * cpus are online.
105 * stop_machine: freeze the machine on all CPUs and run this function
108 * @cpus: the cpus to run the @fn() on (NULL = any online cpu)
120 int stop_machine(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus);
123 * stop_machine_cpuslocked: freeze the machine on all CPUs and run this function
126 * @cpus: the cpus to run the @fn() on (NULL = any online cpu)
131 int stop_machine_cpuslocked(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus);
134 const struct cpumask *cpus);
[all …]
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| /kernel/linux/linux-6.6/arch/riscv/kernel/ |
| D | sys_riscv.c | 86 const struct cpumask *cpus) in hwprobe_arch_id() argument
92 for_each_cpu(cpu, cpus) { in hwprobe_arch_id()
126 const struct cpumask *cpus) in hwprobe_isa_ext0() argument
145 for_each_cpu(cpu, cpus) { in hwprobe_isa_ext0()
168 static u64 hwprobe_misaligned(const struct cpumask *cpus) in hwprobe_misaligned() argument
173 for_each_cpu(cpu, cpus) { in hwprobe_misaligned()
192 const struct cpumask *cpus) in hwprobe_one_pair() argument
198 hwprobe_arch_id(pair, cpus); in hwprobe_one_pair()
211 hwprobe_isa_ext0(pair, cpus); in hwprobe_one_pair()
215 pair->value = hwprobe_misaligned(cpus); in hwprobe_one_pair()
[all …]
|
| /kernel/linux/linux-6.6/include/linux/ |
| D | stop_machine.h | 13 * function to be executed on a single or multiple cpus preempting all
14 * other processes and monopolizing those cpus until it finishes.
18 * cpus are online.
110 * stop_machine: freeze the machine on all CPUs and run this function
113 * @cpus: the cpus to run the @fn() on (NULL = any online cpu)
125 int stop_machine(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus);
128 * stop_machine_cpuslocked: freeze the machine on all CPUs and run this function
131 * @cpus: the cpus to run the @fn() on (NULL = any online cpu)
136 int stop_machine_cpuslocked(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus);
144 * Same as above, but instead of every CPU, only the logical CPUs of a
[all …]
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| /kernel/linux/linux-5.10/drivers/clk/sunxi/ |
| D | clk-sun9i-cpus.c | 7 * Allwinner A80 CPUS clock driver
22 * sun9i_a80_cpus_clk_setup() - Setup function for a80 cpus composite clk
55 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_recalc_rate() local
60 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_recalc_rate()
155 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_set_rate() local
162 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_set_rate()
170 writel(reg, cpus->reg); in sun9i_a80_cpus_clk_set_rate()
188 struct sun9i_a80_cpus_clk *cpus; in sun9i_a80_cpus_setup() local
193 cpus = kzalloc(sizeof(*cpus), GFP_KERNEL); in sun9i_a80_cpus_setup()
194 if (!cpus) in sun9i_a80_cpus_setup()
[all …]
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| /kernel/linux/linux-6.6/drivers/clk/sunxi/ |
| D | clk-sun9i-cpus.c | 7 * Allwinner A80 CPUS clock driver
22 * sun9i_a80_cpus_clk_setup() - Setup function for a80 cpus composite clk
55 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_recalc_rate() local
60 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_recalc_rate()
155 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_set_rate() local
162 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_set_rate()
170 writel(reg, cpus->reg); in sun9i_a80_cpus_clk_set_rate()
188 struct sun9i_a80_cpus_clk *cpus; in sun9i_a80_cpus_setup() local
193 cpus = kzalloc(sizeof(*cpus), GFP_KERNEL); in sun9i_a80_cpus_setup()
194 if (!cpus) in sun9i_a80_cpus_setup()
[all …]
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| /kernel/linux/linux-5.10/tools/lib/perf/tests/ |
| D | test-evlist.c | 30 struct perf_cpu_map *cpus; in test_stat_cpu() local
43 cpus = perf_cpu_map__new(NULL); in test_stat_cpu()
44 __T("failed to create cpus", cpus); in test_stat_cpu()
59 perf_evlist__set_maps(evlist, cpus, NULL); in test_stat_cpu()
65 cpus = perf_evsel__cpus(evsel); in test_stat_cpu()
67 for (idx = 0; idx < perf_cpu_map__nr(cpus); idx++) { in test_stat_cpu()
78 perf_cpu_map__put(cpus); in test_stat_cpu()
200 struct perf_cpu_map *cpus; in test_mmap_thread() local
246 cpus = perf_cpu_map__dummy_new(); in test_mmap_thread()
247 __T("failed to create cpus", cpus); in test_mmap_thread()
[all …]
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| /kernel/linux/linux-6.6/drivers/cpufreq/ |
| D | cpufreq-dt.c | 30 cpumask_var_t cpus; member
50 if (cpumask_test_cpu(cpu, priv->cpus)) in cpufreq_dt_find_data()
129 cpumask_copy(policy->cpus, priv->cpus); in cpufreq_init()
211 if (!zalloc_cpumask_var(&priv->cpus, GFP_KERNEL)) in dt_cpufreq_early_init()
214 cpumask_set_cpu(cpu, priv->cpus); in dt_cpufreq_early_init()
232 ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, priv->cpus); in dt_cpufreq_early_init()
238 * operating-points-v2 not supported, fallback to all CPUs share in dt_cpufreq_early_init()
240 * sharing CPUs. in dt_cpufreq_early_init()
242 if (dev_pm_opp_get_sharing_cpus(cpu_dev, priv->cpus)) in dt_cpufreq_early_init()
247 * Initialize OPP tables for all priv->cpus. They will be shared by in dt_cpufreq_early_init()
[all …]
|
| /kernel/linux/linux-5.10/Documentation/admin-guide/ |
| D | cputopology.rst | 41 internal kernel map of CPUs within the same core.
46 human-readable list of CPUs within the same core.
51 internal kernel map of the CPUs sharing the same physical_package_id.
56 human-readable list of CPUs sharing the same physical_package_id.
61 internal kernel map of CPUs within the same die.
65 human-readable list of CPUs within the same die.
137 offline: CPUs that are not online because they have been
139 of CPUs allowed by the kernel configuration (kernel_max
140 above). [~cpu_online_mask + cpus >= NR_CPUS]
142 online: CPUs that are online and being scheduled [cpu_online_mask]
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| /kernel/linux/linux-6.6/tools/perf/arch/arm64/util/ |
| D | header.c | 19 static int _get_cpuid(char *buf, size_t sz, struct perf_cpu_map *cpus) in _get_cpuid() argument
28 cpus = perf_cpu_map__get(cpus); in _get_cpuid()
30 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) { in _get_cpuid()
35 sysfs, RC_CHK_ACCESS(cpus)->map[cpu].cpu); in _get_cpuid()
54 perf_cpu_map__put(cpus); in _get_cpuid()
60 struct perf_cpu_map *cpus = perf_cpu_map__new(NULL); in get_cpuid() local
63 if (!cpus) in get_cpuid()
66 ret = _get_cpuid(buf, sz, cpus); in get_cpuid()
68 perf_cpu_map__put(cpus); in get_cpuid()
78 if (!pmu || !pmu->cpus) in get_cpuid_str()
[all …]
|
| /kernel/linux/linux-6.6/Documentation/scheduler/ |
| D | sched-energy.rst | 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,
59 In short, EAS changes the way CFS tasks are assigned to CPUs. When it is time
64 knowledge about the platform's topology, which include the 'capacity' of CPUs,
72 differentiate CPUs with different computing throughput. The 'capacity' of a CPU
76 tasks and CPUs computed by the Per-Entity Load Tracking (PELT) mechanism. Thanks
79 energy trade-offs. The capacity of CPUs is provided via arch-specific code
99 Let us consider a platform with 12 CPUs, split in 3 performance domains
102 CPUs: 0 1 2 3 4 5 6 7 8 9 10 11
108 containing 6 CPUs. The two root domains are denoted rd1 and rd2 in the
[all …]
|
| /kernel/linux/linux-5.10/Documentation/scheduler/ |
| D | sched-energy.rst | 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,
59 In short, EAS changes the way CFS tasks are assigned to CPUs. When it is time
64 knowledge about the platform's topology, which include the 'capacity' of CPUs,
72 differentiate CPUs with different computing throughput. The 'capacity' of a CPU
76 tasks and CPUs computed by the Per-Entity Load Tracking (PELT) mechanism. Thanks
79 energy trade-offs. The capacity of CPUs is provided via arch-specific code
99 Let us consider a platform with 12 CPUs, split in 3 performance domains
102 CPUs: 0 1 2 3 4 5 6 7 8 9 10 11
108 containing 6 CPUs. The two root domains are denoted rd1 and rd2 in the
[all …]
|
| /kernel/linux/linux-6.6/Documentation/admin-guide/ |
| D | kernel-per-CPU-kthreads.rst | 13 - Documentation/core-api/irq/irq-affinity.rst: Binding interrupts to sets of CPUs.
15 - Documentation/admin-guide/cgroup-v1: Using cgroups to bind tasks to sets of CPUs.
18 of CPUs.
21 call to bind tasks to sets of CPUs.
50 2. Do all eHCA-Infiniband-related work on other CPUs, including
53 provisioned only on selected CPUs.
101 with multiple CPUs, force them all offline before bringing the
102 first one back online. Once you have onlined the CPUs in question,
103 do not offline any other CPUs, because doing so could force the
104 timer back onto one of the CPUs in question.
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| /kernel/linux/linux-6.6/tools/testing/selftests/cgroup/ |
| D | test_cpuset_prs.sh | 26 CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
27 [[ $CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
102 echo $EXPECTED_VAL > cpuset.cpus.partition
104 ACTUAL_VAL=$(cat cpuset.cpus.partition)
106 echo "cpuset.cpus.partition: expect $EXPECTED_VAL, found $EXPECTED_VAL"
115 ACTUAL_VAL=$(cat cpuset.cpus.effective)
117 echo "cpuset.cpus.effective: expect '$EXPECTED_VAL', found '$EXPECTED_VAL'"
142 echo 2-3 > cpuset.cpus
143 TYPE=$(cat cpuset.cpus.partition)
144 [[ $TYPE = member ]] || echo member > cpuset.cpus.partition
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|