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/linux/tools/lib/perf/
H A Dcpumap.c25 RC_STRUCT(perf_cpu_map) *cpus; in perf_cpu_map__alloc()
31 cpus = malloc(sizeof(*cpus) + sizeof(struct perf_cpu) * nr_cpus); in perf_cpu_map__alloc()
32 if (ADD_RC_CHK(result, cpus)) { in perf_cpu_map__alloc()
33 cpus->nr = nr_cpus; in perf_cpu_map__alloc()
34 refcount_set(&cpus->refcnt, 1); in perf_cpu_map__alloc()
41 struct perf_cpu_map *cpus = perf_cpu_map__alloc(1); in perf_cpu_map__new_any_cpu() local
43 if (cpus) in perf_cpu_map__new_any_cpu()
44 RC_CHK_ACCESS(cpus)->map[0].cpu = -1; in perf_cpu_map__new_any_cpu()
46 return cpus; in perf_cpu_map__new_any_cpu()
80 struct perf_cpu_map *cpus; cpu_map__new_sysconf() local
106 struct perf_cpu_map *cpus = NULL; cpu_map__new_sysfs_online() local
119 struct perf_cpu_map *cpus = cpu_map__new_sysfs_online(); perf_cpu_map__new_online_cpus() local
135 __perf_cpu_map__cpu(const struct perf_cpu_map * cpus,int idx) __perf_cpu_map__cpu() argument
143 struct perf_cpu_map *cpus = perf_cpu_map__alloc(nr_cpus); cpu_map__trim_new() local
167 struct perf_cpu_map *cpus = NULL; perf_cpu_map__new() local
247 struct perf_cpu_map *cpus = perf_cpu_map__alloc(1); perf_cpu_map__new_int() local
255 __perf_cpu_map__nr(const struct perf_cpu_map * cpus) __perf_cpu_map__nr() argument
260 perf_cpu_map__cpu(const struct perf_cpu_map * cpus,int idx) perf_cpu_map__cpu() argument
272 perf_cpu_map__nr(const struct perf_cpu_map * cpus) perf_cpu_map__nr() argument
295 perf_cpu_map__idx(const struct perf_cpu_map * cpus,struct perf_cpu cpu) perf_cpu_map__idx() argument
320 perf_cpu_map__has(const struct perf_cpu_map * cpus,struct perf_cpu cpu) perf_cpu_map__has() argument
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H A Devlist.c39 if (perf_cpu_map__is_empty(evsel->cpus)) { in __perf_evlist__propagate_maps()
42 * Assume the unset PMU cpus were for a system-wide in __perf_evlist__propagate_maps()
49 * Use the user CPUs unless the evsel is set to be in __perf_evlist__propagate_maps()
52 evsel->cpus = perf_cpu_map__get(evlist->user_requested_cpus); in __perf_evlist__propagate_maps()
56 * should be set to all PMU CPUs. in __perf_evlist__propagate_maps()
58 evsel->cpus = perf_cpu_map__get(evsel->pmu_cpus); in __perf_evlist__propagate_maps()
65 if (evsel->requires_cpu && perf_cpu_map__has_any_cpu(evsel->cpus)) { in __perf_evlist__propagate_maps()
66 perf_cpu_map__put(evsel->cpus); in __perf_evlist__propagate_maps()
67 evsel->cpus = perf_cpu_map__get(evsel->pmu_cpus); in __perf_evlist__propagate_maps()
71 * Globally requested CPUs replace user requested unless the evsel is in __perf_evlist__propagate_maps()
[all …]
/linux/tools/testing/selftests/riscv/hwprobe/
H A Dwhich-cpus.c22 "which-cpus: [-h] [<key=value> [<key=value> ...]]\n\n" in help()
25 " <key=value>, outputs the cpulist for cpus which all match the given set\n" in help()
29 static void print_cpulist(cpu_set_t *cpus) in print_cpulist() argument
33 if (!CPU_COUNT(cpus)) { in print_cpulist()
34 printf("cpus: None\n"); in print_cpulist()
38 printf("cpus:"); in print_cpulist()
39 for (int i = 0, c = 0; i < CPU_COUNT(cpus); i++, c++) { in print_cpulist()
40 if (start != end && !CPU_ISSET(c, cpus)) in print_cpulist()
43 while (!CPU_ISSET(c, cpus)) in print_cpulist()
59 static void do_which_cpus(int argc, char **argv, cpu_set_t *cpus) in do_which_cpus() argument
87 cpu_set_t cpus_aff, cpus; main() local
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H A Dcbo.c6 * subset of cpus, as well as only executing the tests on those cpus.
119 cpu_set_t *cpus = (cpu_set_t *)arg; in test_zicbop() local
128 rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)cpus, 0); in test_zicbop()
157 cpu_set_t *cpus = (cpu_set_t *)arg; in test_zicbom() local
161 rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)cpus, 0); in test_zicbom()
181 cpu_set_t *cpus = (cpu_set_t *)arg; in test_zicboz() local
186 rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)cpus, 0); in test_zicboz()
224 static void check_no_zicbo_cpus(cpu_set_t *cpus, __u64 cbo) in check_no_zicbo_cpus() argument
234 while (i++ < CPU_COUNT(cpus)) { in check_no_zicbo_cpus()
235 while (!CPU_ISSET(c, cpus)) in check_no_zicbo_cpus()
[all …]
/linux/drivers/cpuidle/
H A Dcoupled.c3 * 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
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/linux/tools/testing/selftests/cgroup/
H A Dtest_cpuset_prs.sh25 SUBPARTS_CPUS=$CGROUP2/.__DEBUG__.cpuset.cpus.subpartitions
26 CPULIST=$(cat $CGROUP2/cpuset.cpus.effective)
29 [[ $NR_CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
79 echo 0-6 > test/cpuset.cpus
80 echo root > test/cpuset.cpus.partition
81 cat test/cpuset.cpus.partition | grep -q invalid
83 echo member > test/cpuset.cpus.partition
84 echo "" > test/cpuset.cpus
88 # If isolated CPUs have been reserved at boot time (as shown in
89 # cpuset.cpus.isolated), these isolated CPUs should be outside of CPUs 0-8
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/linux/arch/riscv/kernel/
H A Dsys_hwprobe.c33 const struct cpumask *cpus) in hwprobe_arch_id() argument
44 for_each_cpu(cpu, cpus) { in hwprobe_arch_id()
79 const struct cpumask *cpus) in hwprobe_isa_ext0() argument
98 for_each_cpu(cpu, cpus) { in hwprobe_isa_ext0()
184 const struct cpumask *cpus) in hwprobe_isa_ext1() argument
195 for_each_cpu(cpu, cpus) { in hwprobe_isa_ext1()
216 static bool hwprobe_ext0_has(const struct cpumask *cpus, u64 ext) in hwprobe_ext0_has() argument
220 hwprobe_isa_ext0(&pair, cpus); in hwprobe_ext0_has()
225 static u64 hwprobe_misaligned(const struct cpumask *cpus) in hwprobe_misaligned() argument
230 for_each_cpu(cpu, cpus) { in hwprobe_misaligned()
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/linux/Documentation/timers/
H A Dno_hz.rst19 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
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/linux/sound/soc/intel/boards/
H A Dsof_board_helpers.c184 struct snd_soc_dai_link_component *cpus; in set_ssp_codec_link()
194 /* cpus */ in set_ssp_codec_link()
195 cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component), in set_ssp_codec_link()
197 if (!cpus) in set_ssp_codec_link()
202 cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssp%d-port", in set_ssp_codec_link()
205 cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", in set_ssp_codec_link()
208 if (!cpus->dai_name) in set_ssp_codec_link()
211 link->cpus = cpus; in set_ssp_codec_link()
229 struct snd_soc_dai_link_component *cpus; in set_dmic_link()
182 struct snd_soc_dai_link_component *cpus; set_ssp_codec_link() local
227 struct snd_soc_dai_link_component *cpus; set_dmic_link() local
277 struct snd_soc_dai_link_component *cpus, *codecs; set_idisp_hdmi_link() local
336 struct snd_soc_dai_link_component *cpus; set_ssp_amp_link() local
375 struct snd_soc_dai_link_component *cpus; set_bt_offload_link() local
414 struct snd_soc_dai_link_component *cpus; set_hdmi_in_link() local
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H A Dsof_pcm512x.c226 struct snd_soc_dai_link_component *cpus; in sof_card_dai_links_create()
232 cpus = devm_kcalloc(dev, sof_audio_card_pcm512x.num_links, in sof_card_dai_links_create()
234 if (!links || !cpus) in sof_card_dai_links_create()
256 links[id].cpus = &cpus[id]; in sof_card_dai_links_create()
259 links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, in sof_card_dai_links_create()
262 if (!links[id].cpus->dai_name) in sof_card_dai_links_create()
265 links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, in sof_card_dai_links_create()
268 if (!links[id].cpus->dai_name) in sof_card_dai_links_create()
277 links[id].cpus in sof_card_dai_links_create()
225 struct snd_soc_dai_link_component *cpus; sof_card_dai_links_create() local
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/linux/tools/lib/perf/tests/
H A Dtest-cpumap.c16 struct perf_cpu_map *cpus; in test_cpumap() local
24 cpus = perf_cpu_map__new_any_cpu(); 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__new_online_cpus(); 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()
H A Dtest-evlist.c36 struct perf_cpu_map *cpus; in test_stat_cpu() local
49 cpus = perf_cpu_map__new_online_cpus(); in test_stat_cpu()
50 __T("failed to create cpus", cpus); in test_stat_cpu()
69 perf_evlist__set_maps(evlist, cpus, NULL); in test_stat_cpu()
75 cpus = perf_evsel__cpus(evsel); in test_stat_cpu()
77 for (idx = 0; idx < perf_cpu_map__nr(cpus); idx++) { in test_stat_cpu()
88 perf_cpu_map__put(cpus); in test_stat_cpu()
218 struct perf_cpu_map *cpus; in test_mmap_thread() local
264 cpus = perf_cpu_map__new_any_cpu(); in test_mmap_thread()
265 __T("failed to create cpus", cpus); in test_mmap_thread()
[all …]
/linux/arch/riscv/kernel/vdso/
H A Dhwprobe.c12 size_t cpusetsize, unsigned long *cpus,
16 size_t cpusetsize, unsigned long *cpus, in riscv_vdso_get_values() argument
20 bool all_cpus = !cpusetsize && !cpus; in riscv_vdso_get_values()
26 * stashed away only for the "all cpus" case. If all CPUs are in riscv_vdso_get_values()
31 return riscv_hwprobe(pairs, pair_count, cpusetsize, cpus, flags); in riscv_vdso_get_values()
50 size_t cpusetsize, unsigned long *cpus, in riscv_vdso_get_cpus() argument
56 unsigned char *c = (unsigned char *)cpus; in riscv_vdso_get_cpus()
61 if (!cpusetsize || !cpus) in riscv_vdso_get_cpus()
72 return riscv_hwprobe(pairs, pair_count, cpusetsize, cpus, flags); in riscv_vdso_get_cpus()
101 size_t cpusetsize, unsigned long *cpus,
[all …]
/linux/drivers/clk/sunxi/
H A Dclk-sun9i-cpus.c7 * Allwinner A80 CPUS clock driver
52 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_recalc_rate() local
57 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_recalc_rate()
152 struct sun9i_a80_cpus_clk *cpus = to_sun9i_a80_cpus_clk(hw); in sun9i_a80_cpus_clk_set_rate() local
159 reg = readl(cpus->reg); in sun9i_a80_cpus_clk_set_rate()
167 writel(reg, cpus->reg); in sun9i_a80_cpus_clk_set_rate()
181 * sun9i_a80_cpus_setup() - Setup function for a80 cpus composite clk
189 struct sun9i_a80_cpus_clk *cpus; in sun9i_a80_cpus_setup() local
194 cpus = kzalloc_obj(*cpus); in sun9i_a80_cpus_setup()
195 if (!cpus) in sun9i_a80_cpus_setup()
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/linux/drivers/cpufreq/
H A Dcpufreq-dt.c30 cpumask_var_t cpus; member
44 if (cpumask_test_cpu(cpu, priv->cpus)) in cpufreq_dt_find_data()
109 cpumask_copy(policy->cpus, priv->cpus); in cpufreq_init()
176 if (!zalloc_cpumask_var(&priv->cpus, GFP_KERNEL)) in dt_cpufreq_early_init()
179 cpumask_set_cpu(cpu, priv->cpus); in dt_cpufreq_early_init()
197 ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, priv->cpus); in dt_cpufreq_early_init()
203 * operating-points-v2 not supported, fallback to all CPUs share in dt_cpufreq_early_init()
205 * sharing CPUs. in dt_cpufreq_early_init()
207 if (dev_pm_opp_get_sharing_cpus(cpu_dev, priv->cpus)) in dt_cpufreq_early_init()
212 * Initialize OPP tables for all priv->cpus. They will be shared by in dt_cpufreq_early_init()
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/linux/tools/lib/perf/include/perf/
H A Dcpumap.h13 * int16_t limits this to 32767 CPUs. Widening to int requires a libperf
58 LIBPERF_API struct perf_cpu perf_cpu_map__cpu(const struct perf_cpu_map *cpus, unsigned int idx);
63 * the result is the number CPUs in the map plus one if the
66 LIBPERF_API unsigned int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
96 #define perf_cpu_map__for_each_cpu(cpu, idx, cpus) \
97 for ((idx) = 0, (cpu) = perf_cpu_map__cpu(cpus, idx); \
98 (idx) < perf_cpu_map__nr(cpus); \
99 (idx)++, (cpu) = perf_cpu_map__cpu(cpus, idx))
101 #define perf_cpu_map__for_each_cpu_skip_any(_cpu, idx, cpus) \ argument
102 for ((idx) = 0, (_cpu) = perf_cpu_map__cpu(cpus, id
90 perf_cpu_map__for_each_cpu(cpu,idx,cpus) global() argument
95 perf_cpu_map__for_each_cpu_skip_any(_cpu,idx,cpus) global() argument
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/linux/Documentation/scheduler/
H A Dsched-energy.rst9 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
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/linux/Documentation/arch/arm64/
H A Dcpu-hotplug.rst9 CPUs online/offline using PSCI. This document is about ACPI firmware allowing
10 CPUs that were not available during boot to be added to the system later.
15 CPU Hotplug on physical systems - CPUs not present at boot
24 In the arm64 world CPUs are not a single device but a slice of the system.
25 There are no systems that support the physical addition (or removal) of CPUs
29 e.g. New CPUs come with new caches, but the platform's cache topology is
30 described in a static table, the PPTT. How caches are shared between CPUs is
42 CPU Hotplug on virtual systems - CPUs not enabled at boot
54 a virtual machine boots with a single CPU, and additional CPUs are added
59 Virtual hotplug is implemented as a firmware policy affecting which CPUs can be
[all …]
/linux/tools/perf/tests/
H A Dopenat-syscall-all-cpus.c28 struct perf_cpu_map *cpus; in test__openat_syscall_event_on_all_cpus()
41 cpus = perf_cpu_map__new_online_cpus(); in test__openat_syscall_event_on_all_cpus()
42 if (cpus == NULL) { in test__openat_syscall_event_on_all_cpus()
57 if (evsel__open(evsel, cpus, threads) < 0) { in test__openat_syscall_event_on_all_cpus()
65 perf_cpu_map__for_each_cpu(cpu, idx, cpus) { in test__openat_syscall_event_on_all_cpus()
70 * without CPU_ALLOC. 1024 cpus in 2010 still seems in test__openat_syscall_event_on_all_cpus()
92 evsel->core.cpus = perf_cpu_map__get(cpus); in test__openat_syscall_event_on_all_cpus()
96 perf_cpu_map__for_each_cpu(cpu, idx, cpus) { in test__openat_syscall_event_on_all_cpus()
122 perf_cpu_map__put(cpus); in test__openat_syscall_event_on_all_cpus()
27 struct perf_cpu_map *cpus; test__openat_syscall_event_on_all_cpus() local
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/linux/Documentation/devicetree/bindings/csky/
H A Dcpus.txt5 The device tree allows to describe the layout of CPUs in a system through
6 the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
9 Only SMP system need to care about the cpus node and single processor
10 needn't define cpus node at all.
13 cpus and cpu node bindings definition
16 - cpus node
20 The node name must be "cpus".
22 A cpus node must define the following properties:
59 cpus {
/linux/kernel/rcu/
H A DKconfig16 thousands of CPUs. It also scales down nicely to
26 thousands of CPUs, but for which real-time response
119 context switches on all online CPUs, including idle ones,
136 CPU hotplug code paths. It can force IPIs on online CPUs,
188 large numbers of CPUs. This value must be at least the fourth
213 (hundreds or thousands of CPUs) will instead want to set this
274 bool "Offload RCU callback processing from boot-selected CPUs"
281 callback invocation to energy-efficient CPUs in battery-powered
288 CPUs specified at boot time by the rcu_nocbs parameter.
293 also creates another kthread for each sqrt(nr_cpu_ids) CPUs
[all …]
/linux/sound/soc/fsl/
H A DKconfig4 comment "Common SoC Audio options for Freescale CPUs:"
16 support for the Freescale CPUs.
29 support for the Freescale CPUs.
39 support for the Freescale CPUs.
48 support for the NXP iMX CPUs.
57 support for the Freescale CPUs.
70 support for the Freescale CPUs.
80 (ESAI) support for the Freescale CPUs.
113 iMX CPUs. XCVR is a digital module that supports HDMI2.1 eARC,
134 Say Y if you want to add rpmsg audio support for the Freescale CPUs
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/linux/Documentation/arch/arm/
H A Dcluster-pm-race-avoidance.rst18 In a system containing multiple CPUs, it is desirable to have the
19 ability to turn off individual CPUs when the system is idle, reducing
22 In a system containing multiple clusters of CPUs, it is also desirable
27 of independently running CPUs, while the OS continues to run. This
92 CPUs in the cluster simultaneously modifying the state. The cluster-
104 referred to as a "CPU". CPUs are assumed to be single-threaded:
107 This means that CPUs fit the basic model closely.
216 A cluster is a group of connected CPUs with some common resources.
217 Because a cluster contains multiple CPUs, it can be doing multiple
272 which exact CPUs within the cluster play these roles. This must
[all …]
/linux/tools/testing/selftests/rcutorture/bin/
H A Djitter.sh4 # Alternate sleeping and spinning on randomly selected CPUs. The purpose
74 if cpus=`grep 1 /sys/devices/system/cpu/*/online 2>&1 |
79 cpus=
81 # Do not leave out non-hot-pluggable CPUs
82 cpus="$cpus $nohotplugcpus"
84 cpumask=`awk -v cpus="$cpus" -v me=$me -v n=$n 'BEGIN {
86 ncpus = split(cpus, ca);
/linux/tools/testing/selftests/cpufreq/
H A Dcpu.sh17 cpus=$(ls $CPUROOT | grep "cpu[0-9].*")
18 for cpu in $cpus; do
25 cpus=$(ls $CPUROOT | grep "cpu[1-9].*")
26 for cpu in $cpus; do
52 # Reboot CPUs
67 # Prints warning for all CPUs with missing cpufreq directory
73 # Counts CPUs with cpufreq directories

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