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/linux/drivers/cpufreq/
H A Dintel_pstate.c21 #include <linux/cpu.h>
33 #include <asm/cpu.h>
100 * to account for cpu idle period
136 * Stores the per cpu model P state limits and current P state.
191 * struct cpudata - Per CPU instance data storage
192 * @cpu: CPU number for this instance data
198 * @pstate: Stores P state limits for this CPU
199 * @vid: Stores VID limits for this CPU
221 * @sched_flags: Store scheduler flags for possible cross CPU update
224 * @pd_registered: Set when a perf domain is registered for this CPU.
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/linux/arch/arm/boot/dts/intel/axm/
H A Daxm5516-cpus.dtsi13 cpu-map {
16 cpu = <&CPU0>;
19 cpu = <&CPU1>;
22 cpu = <&CPU2>;
25 cpu = <&CPU3>;
30 cpu = <&CPU4>;
33 cpu = <&CPU5>;
36 cpu = <&CPU6>;
39 cpu = <&CPU7>;
44 cpu = <&CPU8>;
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/linux/arch/arm/mach-meson/
H A Dplatsmp.c38 static struct reset_control *meson_smp_get_core_reset(int cpu) in meson_smp_get_core_reset() argument
40 struct device_node *np = of_get_cpu_node(cpu, 0); in meson_smp_get_core_reset()
45 static void meson_smp_set_cpu_ctrl(int cpu, bool on_off) in meson_smp_set_cpu_ctrl() argument
50 val |= BIT(cpu); in meson_smp_set_cpu_ctrl()
52 val &= ~BIT(cpu); in meson_smp_set_cpu_ctrl()
116 static void meson_smp_begin_secondary_boot(unsigned int cpu) in meson_smp_begin_secondary_boot() argument
119 * Set the entry point before powering on the CPU through the SCU. This in meson_smp_begin_secondary_boot()
120 * is needed if the CPU is in "warm" state (= after rebooting the in meson_smp_begin_secondary_boot()
121 * system without power-cycling, or when taking the CPU offline and in meson_smp_begin_secondary_boot()
125 sram_base + MESON_SMP_SRAM_CPU_CTRL_ADDR_REG(cpu)); in meson_smp_begin_secondary_boot()
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/linux/drivers/base/
H A Darch_topology.c3 * Arch specific cpu topology information
12 #include <linux/cpu.h>
67 int cpu; in topology_set_scale_freq_source() local
78 for_each_cpu(cpu, cpus) { in topology_set_scale_freq_source()
79 sfd = rcu_dereference(*per_cpu_ptr(&sft_data, cpu)); in topology_set_scale_freq_source()
83 rcu_assign_pointer(per_cpu(sft_data, cpu), data); in topology_set_scale_freq_source()
84 cpumask_set_cpu(cpu, &scale_freq_counters_mask); in topology_set_scale_freq_source()
98 int cpu; in topology_clear_scale_freq_source() local
102 for_each_cpu(cpu, cpus) { in topology_clear_scale_freq_source()
103 sfd = rcu_dereference(*per_cpu_ptr(&sft_data, cpu)); in topology_clear_scale_freq_source()
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H A Dcacheinfo.c5 * Based on arch/x86/kernel/cpu/intel_cacheinfo.c
14 #include <linux/cpu.h>
23 /* pointer to per cpu cacheinfo */
25 #define ci_cacheinfo(cpu) (&per_cpu(ci_cpu_cacheinfo, cpu)) argument
26 #define cache_leaves(cpu) (ci_cacheinfo(cpu)->num_leaves) argument
27 #define per_cpu_cacheinfo(cpu) (ci_cacheinfo(cpu)->info_list) argument
28 #define per_cpu_cacheinfo_idx(cpu, idx) \ argument
29 (per_cpu_cacheinfo(cpu) + (idx))
34 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu) in get_cpu_cacheinfo() argument
36 return ci_cacheinfo(cpu); in get_cpu_cacheinfo()
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/linux/tools/perf/pmu-events/arch/s390/cf_z16/
H A Dcrypto6.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
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/linux/tools/perf/pmu-events/arch/s390/cf_z15/
H A Dcrypto6.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
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/linux/arch/arm64/boot/dts/cavium/
H A Dthunder-88xx.dtsi65 cpu@0 {
66 device_type = "cpu";
71 cpu@1 {
72 device_type = "cpu";
77 cpu@2 {
78 device_type = "cpu";
83 cpu@3 {
84 device_type = "cpu";
89 cpu@4 {
90 device_type = "cpu";
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/linux/arch/arm64/kernel/
H A Dsmp.c23 #include <linux/cpu.h>
42 #include <asm/cpu.h>
90 static void ipi_setup(int cpu);
93 static void ipi_teardown(int cpu);
94 static int op_cpu_kill(unsigned int cpu);
96 static inline int op_cpu_kill(unsigned int cpu) in op_cpu_kill() argument
104 * Boot a secondary CPU, and assign it the specified idle task.
105 * This also gives us the initial stack to use for this CPU.
107 static int boot_secondary(unsigned int cpu, struct task_struct *idle) in boot_secondary() argument
109 const struct cpu_operations *ops = get_cpu_ops(cpu); in boot_secondary()
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/linux/arch/arm/mach-tegra/
H A Dplatsmp.c36 static void tegra_secondary_init(unsigned int cpu) in tegra_secondary_init() argument
38 cpumask_set_cpu(cpu, &tegra_cpu_init_mask); in tegra_secondary_init()
42 static int tegra20_boot_secondary(unsigned int cpu, struct task_struct *idle) in tegra20_boot_secondary() argument
44 cpu = cpu_logical_map(cpu); in tegra20_boot_secondary()
47 * Force the CPU into reset. The CPU must remain in reset when in tegra20_boot_secondary()
49 * flow controller to stop driving reset if the CPU has been in tegra20_boot_secondary()
51 * effect on first boot of the CPU since it should already be in tegra20_boot_secondary()
54 tegra_put_cpu_in_reset(cpu); in tegra20_boot_secondary()
57 * Unhalt the CPU. If the flow controller was used to in tegra20_boot_secondary()
58 * power-gate the CPU this will cause the flow controller to in tegra20_boot_secondary()
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/linux/tools/testing/selftests/cpu-hotplug/
H A Dcpu-on-off-test.sh27 if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
28 echo $msg cpu hotplug is not supported >&2
32 echo "CPU online/offline summary:"
33 online_cpus=`cat $SYSFS/devices/system/cpu/online`
37 echo "$msg: since there is only one cpu: $online_cpus"
41 present_cpus=`cat $SYSFS/devices/system/cpu/present`
47 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
63 for cpu in $SYSFS/devices/system/cpu/cpu*; do
64 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
65 echo ${cpu##/*/cpu}
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/linux/arch/powerpc/kernel/
H A Dsmp.c29 #include <linux/cpu.h>
76 /* State of each CPU during hotplug phases */
117 * On big-cores system, thread_group_l1_cache_map for each CPU corresponds to
123 * On some big-cores system, thread_group_l2_cache_map for each CPU
130 * On P10, thread_group_l3_cache_map for each CPU is equal to the
144 * Returns 1 if the specified cpu should be brought up during boot.
278 void smp_muxed_ipi_set_message(int cpu, int msg) in smp_muxed_ipi_set_message() argument
280 struct cpu_messages *info = &per_cpu(ipi_message, cpu); in smp_muxed_ipi_set_message()
290 void smp_muxed_ipi_message_pass(int cpu, int msg) in smp_muxed_ipi_message_pass() argument
292 smp_muxed_ipi_set_message(cpu, msg); in smp_muxed_ipi_message_pass()
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/linux/tools/perf/pmu-events/arch/s390/cf_z14/
H A Dcrypto.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
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/linux/tools/perf/pmu-events/arch/s390/cf_z13/
H A Dcrypto.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
[all …]
/linux/tools/perf/pmu-events/arch/s390/cf_z10/
H A Dcrypto.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
[all …]
/linux/tools/perf/pmu-events/arch/s390/cf_zec12/
H A Dcrypto.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
[all …]
/linux/tools/perf/pmu-events/arch/s390/cf_z196/
H A Dcrypto.json3 "Unit": "CPU-M-CF",
7 …counter counts the total number of the pseudorandom-number-generation functions issued by the CPU."
10 "Unit": "CPU-M-CF",
14 …al number of CPU cycles when the DEA/AES/SHA coprocessor is busy performing the pseudorandom- numb…
17 "Unit": "CPU-M-CF",
21 …that are issued by the CPU and are blocked because the DEA/AES/SHA coprocessor is busy performing …
24 "Unit": "CPU-M-CF",
28 …CPU cycles blocked for the pseudorandom-number-generation functions issued by the CPU because the …
31 "Unit": "CPU-M-CF",
35 …"PublicDescription": "This counter counts the total number of the SHA functions issued by the CPU."
[all …]
/linux/arch/loongarch/kernel/
H A Dsmp.c12 #include <linux/cpu.h>
29 #include <asm/cpu.h>
45 /* Representing the threads (siblings) of each logical CPU */
49 /* Representing the last level cache shared map of each logical CPU */
53 /* Representing the core map of multi-core chips of each logical CPU */
61 * A logcal cpu mask containing only one VPE per core to
88 unsigned int cpu, i; in show_ipi_list() local
92 for_each_online_cpu(cpu) in show_ipi_list()
93 seq_put_decimal_ull_width(p, " ", per_cpu(irq_stat, cpu).ipi_irqs[i], 10); in show_ipi_list()
98 static inline void set_cpu_core_map(int cpu) in set_cpu_core_map() argument
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/linux/kernel/sched/
H A Dext_idle.c5 * Built-in idle CPU tracking policy.
14 /* Enable/disable built-in idle CPU selection policy */
34 cpumask_var_t cpu; member
50 * Local per-CPU cpumasks (used to generate temporary idle cpumasks).
67 * Returns the NUMA node ID associated with a @cpu, or NUMA_NO_NODE if
70 static int scx_cpu_node_if_enabled(int cpu) in scx_cpu_node_if_enabled() argument
75 return cpu_to_node(cpu); in scx_cpu_node_if_enabled()
78 bool scx_idle_test_and_clear_cpu(int cpu) in scx_idle_test_and_clear_cpu() argument
80 int node = scx_cpu_node_if_enabled(cpu); in scx_idle_test_and_clear_cpu()
81 struct cpumask *idle_cpus = idle_cpumask(node)->cpu; in scx_idle_test_and_clear_cpu()
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/linux/Documentation/ABI/testing/
H A Dsysfs-devices-system-cpu1 What: /sys/devices/system/cpu/
5 A collection of both global and individual CPU attributes
7 Individual CPU attributes are contained in subdirectories
8 named by the kernel's logical CPU number, e.g.:
10 /sys/devices/system/cpu/cpuX/
12 What: /sys/devices/system/cpu/kernel_max
13 /sys/devices/system/cpu/offline
14 /sys/devices/system/cpu/online
15 /sys/devices/system/cpu/possible
16 /sys/devices/system/cpu/present
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/linux/arch/arm64/boot/dts/amd/
H A Delba-16core.dtsi11 cpu-map {
13 core0 { cpu = <&cpu0>; };
14 core1 { cpu = <&cpu1>; };
15 core2 { cpu = <&cpu2>; };
16 core3 { cpu = <&cpu3>; };
20 core0 { cpu = <&cpu4>; };
21 core1 { cpu = <&cpu5>; };
22 core2 { cpu = <&cpu6>; };
23 core3 { cpu = <&cpu7>; };
27 core0 { cpu = <&cpu8>; };
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/linux/arch/arm/mach-bcm/
H A Dplatsmp-brcmstb.c3 * Broadcom STB CPU SMP and hotplug support for ARM
52 * We must quiesce a dying CPU before it can be killed by the boot CPU. Because
59 static int per_cpu_sw_state_rd(u32 cpu) in per_cpu_sw_state_rd() argument
61 sync_cache_r(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); in per_cpu_sw_state_rd()
62 return per_cpu(per_cpu_sw_state, cpu); in per_cpu_sw_state_rd()
65 static void per_cpu_sw_state_wr(u32 cpu, int val) in per_cpu_sw_state_wr() argument
68 per_cpu(per_cpu_sw_state, cpu) = val; in per_cpu_sw_state_wr()
69 sync_cache_w(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); in per_cpu_sw_state_wr()
72 static inline void per_cpu_sw_state_wr(u32 cpu, int val) { } in per_cpu_sw_state_wr() argument
75 static void __iomem *pwr_ctrl_get_base(u32 cpu) in pwr_ctrl_get_base() argument
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/linux/arch/arm/kernel/
H A Dsmp.c20 #include <linux/cpu.h>
35 #include <asm/cpu.h>
86 static void ipi_setup(int cpu);
108 static int secondary_biglittle_prepare(unsigned int cpu) in secondary_biglittle_prepare() argument
110 if (!cpu_vtable[cpu]) in secondary_biglittle_prepare()
111 cpu_vtable[cpu] = kzalloc(sizeof(*cpu_vtable[cpu]), GFP_KERNEL); in secondary_biglittle_prepare()
113 return cpu_vtable[cpu] ? 0 : -ENOMEM; in secondary_biglittle_prepare()
121 static int secondary_biglittle_prepare(unsigned int cpu) in secondary_biglittle_prepare() argument
131 int __cpu_up(unsigned int cpu, struct task_struct *idle) in __cpu_up() argument
138 ret = secondary_biglittle_prepare(cpu); in __cpu_up()
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/linux/arch/x86/xen/
H A Dsmp.c3 #include <linux/cpu.h>
32 void xen_smp_intr_free(unsigned int cpu) in xen_smp_intr_free() argument
34 kfree(per_cpu(xen_resched_irq, cpu).name); in xen_smp_intr_free()
35 per_cpu(xen_resched_irq, cpu).name = NULL; in xen_smp_intr_free()
36 if (per_cpu(xen_resched_irq, cpu).irq >= 0) { in xen_smp_intr_free()
37 unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu).irq, NULL); in xen_smp_intr_free()
38 per_cpu(xen_resched_irq, cpu).irq = -1; in xen_smp_intr_free()
40 kfree(per_cpu(xen_callfunc_irq, cpu).name); in xen_smp_intr_free()
41 per_cpu(xen_callfunc_irq, cpu).name = NULL; in xen_smp_intr_free()
42 if (per_cpu(xen_callfunc_irq, cpu).irq >= 0) { in xen_smp_intr_free()
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/linux/drivers/xen/
H A Dcpu_hotplug.c10 #include <asm/cpu.h>
12 static void enable_hotplug_cpu(int cpu) in enable_hotplug_cpu() argument
14 if (!cpu_present(cpu)) in enable_hotplug_cpu()
15 xen_arch_register_cpu(cpu); in enable_hotplug_cpu()
17 set_cpu_present(cpu, true); in enable_hotplug_cpu()
20 static void disable_hotplug_cpu(int cpu) in disable_hotplug_cpu() argument
22 if (!cpu_is_hotpluggable(cpu)) in disable_hotplug_cpu()
25 if (cpu_online(cpu)) in disable_hotplug_cpu()
26 device_offline(get_cpu_device(cpu)); in disable_hotplug_cpu()
27 if (!cpu_online(cpu) && cpu_present(cpu)) { in disable_hotplug_cpu()
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