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/Linux-v5.10/tools/testing/selftests/cpu-hotplug/
Dcpu-on-off-test.sh26 if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
27 echo $msg cpu hotplug is not supported >&2
32 online_cpus=`cat $SYSFS/devices/system/cpu/online`
40 present_cpus=`cat $SYSFS/devices/system/cpu/present`
46 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
62 for cpu in $SYSFS/devices/system/cpu/cpu*; do
63 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
64 echo ${cpu##/*/cpu}
81 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
86 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
[all …]
/Linux-v5.10/arch/arm/boot/dts/
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-v5.10/drivers/cpufreq/
Dintel_pstate.c233 int cpu; member
343 static void intel_pstate_set_itmt_prio(int cpu) in intel_pstate_set_itmt_prio() argument
349 ret = cppc_get_perf_caps(cpu, &cppc_perf); in intel_pstate_set_itmt_prio()
358 sched_set_itmt_core_prio(cppc_perf.highest_perf, cpu); in intel_pstate_set_itmt_prio()
379 static int intel_pstate_get_cppc_guranteed(int cpu) in intel_pstate_get_cppc_guranteed() argument
384 ret = cppc_get_perf_caps(cpu, &cppc_perf); in intel_pstate_get_cppc_guranteed()
395 static void intel_pstate_set_itmt_prio(int cpu) in intel_pstate_set_itmt_prio() argument
402 struct cpudata *cpu; in intel_pstate_init_acpi_perf_limits() local
407 intel_pstate_set_itmt_prio(policy->cpu); in intel_pstate_init_acpi_perf_limits()
414 cpu = all_cpu_data[policy->cpu]; in intel_pstate_init_acpi_perf_limits()
[all …]
Dcppc_cpufreq.c99 static unsigned int cppc_cpufreq_perf_to_khz(struct cppc_cpudata *cpu, in cppc_cpufreq_perf_to_khz() argument
103 struct cppc_perf_caps *caps = &cpu->perf_caps; in cppc_cpufreq_perf_to_khz()
123 static unsigned int cppc_cpufreq_khz_to_perf(struct cppc_cpudata *cpu, in cppc_cpufreq_khz_to_perf() argument
127 struct cppc_perf_caps *caps = &cpu->perf_caps; in cppc_cpufreq_khz_to_perf()
152 struct cppc_cpudata *cpu; in cppc_cpufreq_set_target() local
157 cpu = all_cpu_data[policy->cpu]; in cppc_cpufreq_set_target()
159 desired_perf = cppc_cpufreq_khz_to_perf(cpu, target_freq); in cppc_cpufreq_set_target()
161 if (desired_perf == cpu->perf_ctrls.desired_perf) in cppc_cpufreq_set_target()
164 cpu->perf_ctrls.desired_perf = desired_perf; in cppc_cpufreq_set_target()
169 ret = cppc_set_perf(cpu->cpu, &cpu->perf_ctrls); in cppc_cpufreq_set_target()
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/Linux-v5.10/arch/powerpc/kernel/
Dsmp.c258 void smp_muxed_ipi_set_message(int cpu, int msg) in smp_muxed_ipi_set_message() argument
260 struct cpu_messages *info = &per_cpu(ipi_message, cpu); in smp_muxed_ipi_set_message()
270 void smp_muxed_ipi_message_pass(int cpu, int msg) in smp_muxed_ipi_message_pass() argument
272 smp_muxed_ipi_set_message(cpu, msg); in smp_muxed_ipi_message_pass()
278 smp_ops->cause_ipi(cpu); in smp_muxed_ipi_message_pass()
332 static inline void do_message_pass(int cpu, int msg) in do_message_pass() argument
335 smp_ops->message_pass(cpu, msg); in do_message_pass()
338 smp_muxed_ipi_message_pass(cpu, msg); in do_message_pass()
342 void smp_send_reschedule(int cpu) in smp_send_reschedule() argument
345 do_message_pass(cpu, PPC_MSG_RESCHEDULE); in smp_send_reschedule()
[all …]
Dwatchdog.c114 int cpu = raw_smp_processor_id(); in wd_lockup_ipi() local
117 pr_emerg("CPU %d Hard LOCKUP\n", cpu); in wd_lockup_ipi()
119 cpu, tb, per_cpu(wd_timer_tb, cpu), in wd_lockup_ipi()
120 tb_to_ns(tb - per_cpu(wd_timer_tb, cpu)) / 1000000); in wd_lockup_ipi()
142 static void set_cpu_stuck(int cpu, u64 tb) in set_cpu_stuck() argument
144 set_cpumask_stuck(cpumask_of(cpu), tb); in set_cpu_stuck()
147 static void watchdog_smp_panic(int cpu, u64 tb) in watchdog_smp_panic() argument
156 if (cpumask_test_cpu(cpu, &wd_smp_cpus_pending)) in watchdog_smp_panic()
162 cpu, cpumask_pr_args(&wd_smp_cpus_pending)); in watchdog_smp_panic()
164 cpu, tb, wd_smp_last_reset_tb, in watchdog_smp_panic()
[all …]
Dtau_6xx.c55 static void set_thresholds(unsigned long cpu) in set_thresholds() argument
60 mtspr(SPRN_THRM1, THRM1_THRES(tau[cpu].low) | THRM1_V | maybe_tie | THRM1_TID); in set_thresholds()
63 mtspr(SPRN_THRM2, THRM1_THRES(tau[cpu].high) | THRM1_V | maybe_tie); in set_thresholds()
66 static void TAUupdate(int cpu) in TAUupdate() argument
77 if (tau[cpu].low >= step_size) { in TAUupdate()
78 tau[cpu].low -= step_size; in TAUupdate()
79 tau[cpu].high -= (step_size - window_expand); in TAUupdate()
81 tau[cpu].grew = 1; in TAUupdate()
88 if (tau[cpu].high <= 127 - step_size) { in TAUupdate()
89 tau[cpu].low += (step_size - window_expand); in TAUupdate()
[all …]
/Linux-v5.10/arch/arc/kernel/
Dsetup.c70 static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu) in read_decode_ccm_bcr() argument
78 cpu->iccm.sz = 4096 << iccm.sz; /* 8K to 512K */ in read_decode_ccm_bcr()
79 cpu->iccm.base_addr = iccm.base << 16; in read_decode_ccm_bcr()
85 cpu->dccm.sz = 2048 << dccm.sz; /* 2K to 256K */ in read_decode_ccm_bcr()
88 cpu->dccm.base_addr = base & ~0xF; in read_decode_ccm_bcr()
97 cpu->iccm.sz = 256 << iccm.sz00; /* 512B to 16M */ in read_decode_ccm_bcr()
99 cpu->iccm.sz <<= iccm.sz01; in read_decode_ccm_bcr()
102 cpu->iccm.base_addr = region & 0xF0000000; in read_decode_ccm_bcr()
107 cpu->dccm.sz = 256 << dccm.sz0; in read_decode_ccm_bcr()
109 cpu->dccm.sz <<= dccm.sz1; in read_decode_ccm_bcr()
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/Linux-v5.10/include/linux/
Dcpumask.h117 #define cpu_online(cpu) cpumask_test_cpu((cpu), cpu_online_mask) argument
118 #define cpu_possible(cpu) cpumask_test_cpu((cpu), cpu_possible_mask) argument
119 #define cpu_present(cpu) cpumask_test_cpu((cpu), cpu_present_mask) argument
120 #define cpu_active(cpu) cpumask_test_cpu((cpu), cpu_active_mask) argument
126 #define cpu_online(cpu) ((cpu) == 0) argument
127 #define cpu_possible(cpu) ((cpu) == 0) argument
128 #define cpu_present(cpu) ((cpu) == 0) argument
129 #define cpu_active(cpu) ((cpu) == 0) argument
134 static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits) in cpu_max_bits_warn() argument
137 WARN_ON_ONCE(cpu >= bits); in cpu_max_bits_warn()
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/Linux-v5.10/arch/microblaze/kernel/cpu/
Dcpuinfo-static.c23 void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) in set_cpuinfo_static() argument
28 (fcpu(cpu, "xlnx,use-barrel") ? PVR0_USE_BARREL_MASK : 0) | in set_cpuinfo_static()
29 (fcpu(cpu, "xlnx,use-msr-instr") ? PVR2_USE_MSR_INSTR : 0) | in set_cpuinfo_static()
30 (fcpu(cpu, "xlnx,use-pcmp-instr") ? PVR2_USE_PCMP_INSTR : 0) | in set_cpuinfo_static()
31 (fcpu(cpu, "xlnx,use-div") ? PVR0_USE_DIV_MASK : 0); in set_cpuinfo_static()
43 ci->use_mult = fcpu(cpu, "xlnx,use-hw-mul"); in set_cpuinfo_static()
51 ci->use_fpu = fcpu(cpu, "xlnx,use-fpu"); in set_cpuinfo_static()
59 (fcpu(cpu, "xlnx,unaligned-exceptions") ? in set_cpuinfo_static()
61 (fcpu(cpu, "xlnx,ill-opcode-exception") ? in set_cpuinfo_static()
63 (fcpu(cpu, "xlnx,iopb-bus-exception") ? in set_cpuinfo_static()
[all …]
/Linux-v5.10/arch/x86/xen/
Dsmp.c33 void xen_smp_intr_free(unsigned int cpu) in xen_smp_intr_free() argument
35 if (per_cpu(xen_resched_irq, cpu).irq >= 0) { in xen_smp_intr_free()
36 unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu).irq, NULL); in xen_smp_intr_free()
37 per_cpu(xen_resched_irq, cpu).irq = -1; in xen_smp_intr_free()
38 kfree(per_cpu(xen_resched_irq, cpu).name); in xen_smp_intr_free()
39 per_cpu(xen_resched_irq, cpu).name = NULL; in xen_smp_intr_free()
41 if (per_cpu(xen_callfunc_irq, cpu).irq >= 0) { in xen_smp_intr_free()
42 unbind_from_irqhandler(per_cpu(xen_callfunc_irq, cpu).irq, NULL); in xen_smp_intr_free()
43 per_cpu(xen_callfunc_irq, cpu).irq = -1; in xen_smp_intr_free()
44 kfree(per_cpu(xen_callfunc_irq, cpu).name); in xen_smp_intr_free()
[all …]
Dsmp_pv.c62 int cpu; in cpu_bringup() local
74 cpu = smp_processor_id(); in cpu_bringup()
75 smp_store_cpu_info(cpu); in cpu_bringup()
76 cpu_data(cpu).x86_max_cores = 1; in cpu_bringup()
77 set_cpu_sibling_map(cpu); in cpu_bringup()
83 notify_cpu_starting(cpu); in cpu_bringup()
85 set_cpu_online(cpu, true); in cpu_bringup()
87 cpu_set_state_online(cpu); /* Implies full memory barrier. */ in cpu_bringup()
99 void xen_smp_intr_free_pv(unsigned int cpu) in xen_smp_intr_free_pv() argument
101 if (per_cpu(xen_irq_work, cpu).irq >= 0) { in xen_smp_intr_free_pv()
[all …]
/Linux-v5.10/arch/arm/mach-tegra/
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()
54 tegra_put_cpu_in_reset(cpu); in tegra20_boot_secondary()
62 flowctrl_write_cpu_halt(cpu, 0); in tegra20_boot_secondary()
64 tegra_enable_cpu_clock(cpu); in tegra20_boot_secondary()
65 flowctrl_write_cpu_csr(cpu, 0); /* Clear flow controller CSR. */ in tegra20_boot_secondary()
66 tegra_cpu_out_of_reset(cpu); in tegra20_boot_secondary()
70 static int tegra30_boot_secondary(unsigned int cpu, struct task_struct *idle) in tegra30_boot_secondary() argument
[all …]
/Linux-v5.10/kernel/
Dsmpboot.c30 struct task_struct *idle_thread_get(unsigned int cpu) in idle_thread_get() argument
32 struct task_struct *tsk = per_cpu(idle_threads, cpu); in idle_thread_get()
36 init_idle(tsk, cpu); in idle_thread_get()
51 static inline void idle_init(unsigned int cpu) in idle_init() argument
53 struct task_struct *tsk = per_cpu(idle_threads, cpu); in idle_init()
56 tsk = fork_idle(cpu); in idle_init()
58 pr_err("SMP: fork_idle() failed for CPU %u\n", cpu); in idle_init()
60 per_cpu(idle_threads, cpu) = tsk; in idle_init()
69 unsigned int cpu, boot_cpu; in idle_threads_init() local
73 for_each_possible_cpu(cpu) { in idle_threads_init()
[all …]
/Linux-v5.10/arch/arm/mach-meson/
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()
114 static void meson_smp_begin_secondary_boot(unsigned int cpu) in meson_smp_begin_secondary_boot() argument
123 sram_base + MESON_SMP_SRAM_CPU_CTRL_ADDR_REG(cpu)); in meson_smp_begin_secondary_boot()
129 scu_cpu_power_enable(scu_base, cpu); in meson_smp_begin_secondary_boot()
132 static int meson_smp_finalize_secondary_boot(unsigned int cpu) in meson_smp_finalize_secondary_boot() argument
137 while (readl(sram_base + MESON_SMP_SRAM_CPU_CTRL_ADDR_REG(cpu))) { in meson_smp_finalize_secondary_boot()
[all …]
/Linux-v5.10/arch/arm/mach-bcm/
Dplatsmp-brcmstb.c67 static int per_cpu_sw_state_rd(u32 cpu) in per_cpu_sw_state_rd() argument
69 sync_cache_r(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); in per_cpu_sw_state_rd()
70 return per_cpu(per_cpu_sw_state, cpu); in per_cpu_sw_state_rd()
73 static void per_cpu_sw_state_wr(u32 cpu, int val) in per_cpu_sw_state_wr() argument
76 per_cpu(per_cpu_sw_state, cpu) = val; in per_cpu_sw_state_wr()
77 sync_cache_w(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); in per_cpu_sw_state_wr()
80 static inline void per_cpu_sw_state_wr(u32 cpu, int val) { } in per_cpu_sw_state_wr() argument
83 static void __iomem *pwr_ctrl_get_base(u32 cpu) in pwr_ctrl_get_base() argument
86 base += (cpu_logical_map(cpu) * 4); in pwr_ctrl_get_base()
90 static u32 pwr_ctrl_rd(u32 cpu) in pwr_ctrl_rd() argument
[all …]
/Linux-v5.10/drivers/base/
Darch_topology.c61 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) in topology_set_cpu_scale() argument
63 per_cpu(cpu_scale, cpu) = capacity; in topology_set_cpu_scale()
71 int cpu; in topology_set_thermal_pressure() local
73 for_each_cpu(cpu, cpus) in topology_set_thermal_pressure()
74 WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure); in topology_set_thermal_pressure()
81 struct cpu *cpu = container_of(dev, struct cpu, dev); in cpu_capacity_show() local
83 return sysfs_emit(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id)); in cpu_capacity_show()
94 struct device *cpu; in register_cpu_capacity_sysctl() local
97 cpu = get_cpu_device(i); in register_cpu_capacity_sysctl()
98 if (!cpu) { in register_cpu_capacity_sysctl()
[all …]
/Linux-v5.10/tools/power/x86/intel-speed-select/
Disst-core.c9 int isst_write_pm_config(int cpu, int cp_state) in isst_write_pm_config() argument
19 ret = isst_send_mbox_command(cpu, WRITE_PM_CONFIG, PM_FEATURE, 0, req, in isst_write_pm_config()
24 debug_printf("cpu:%d WRITE_PM_CONFIG resp:%x\n", cpu, resp); in isst_write_pm_config()
29 int isst_read_pm_config(int cpu, int *cp_state, int *cp_cap) in isst_read_pm_config() argument
34 ret = isst_send_mbox_command(cpu, READ_PM_CONFIG, PM_FEATURE, 0, 0, in isst_read_pm_config()
39 debug_printf("cpu:%d READ_PM_CONFIG resp:%x\n", cpu, resp); in isst_read_pm_config()
47 int isst_get_ctdp_levels(int cpu, struct isst_pkg_ctdp *pkg_dev) in isst_get_ctdp_levels() argument
52 ret = isst_send_mbox_command(cpu, CONFIG_TDP, in isst_get_ctdp_levels()
63 debug_printf("cpu:%d CONFIG_TDP_GET_LEVELS_INFO resp:%x\n", cpu, resp); in isst_get_ctdp_levels()
74 int isst_get_ctdp_control(int cpu, int config_index, in isst_get_ctdp_control() argument
[all …]
/Linux-v5.10/arch/powerpc/include/asm/
Dsmp.h33 extern int cpu_to_chip_id(int cpu);
38 void (*message_pass)(int cpu, int msg);
40 void (*cause_ipi)(int cpu);
42 int (*cause_nmi_ipi)(int cpu);
58 extern int smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
59 extern int smp_send_safe_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
69 void generic_cpu_die(unsigned int cpu);
70 void generic_set_cpu_dead(unsigned int cpu);
71 void generic_set_cpu_up(unsigned int cpu);
72 int generic_check_cpu_restart(unsigned int cpu);
[all …]
/Linux-v5.10/arch/arm64/kernel/
Dsmp.c84 static void ipi_setup(int cpu);
87 static void ipi_teardown(int cpu);
88 static int op_cpu_kill(unsigned int cpu);
90 static inline int op_cpu_kill(unsigned int cpu) in op_cpu_kill() argument
101 static int boot_secondary(unsigned int cpu, struct task_struct *idle) in boot_secondary() argument
103 const struct cpu_operations *ops = get_cpu_ops(cpu); in boot_secondary()
106 return ops->cpu_boot(cpu); in boot_secondary()
113 int __cpu_up(unsigned int cpu, struct task_struct *idle) in __cpu_up() argument
128 ret = boot_secondary(cpu, idle); in __cpu_up()
130 pr_err("CPU%u: failed to boot: %d\n", cpu, ret); in __cpu_up()
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/Linux-v5.10/drivers/xen/
Dcpu_hotplug.c12 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()
28 xen_arch_unregister_cpu(cpu); in disable_hotplug_cpu()
[all …]
/Linux-v5.10/arch/x86/include/asm/
Dtopology.h48 extern int __cpu_to_node(int cpu);
51 extern int early_cpu_to_node(int cpu);
56 static inline int early_cpu_to_node(int cpu) in early_cpu_to_node() argument
58 return early_per_cpu(x86_cpu_to_node_map, cpu); in early_cpu_to_node()
94 static inline int early_cpu_to_node(int cpu) in early_cpu_to_node() argument
105 extern const struct cpumask *cpu_coregroup_mask(int cpu);
107 #define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id) argument
108 #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) argument
109 #define topology_logical_die_id(cpu) (cpu_data(cpu).logical_die_id) argument
110 #define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id) argument
[all …]
/Linux-v5.10/arch/s390/include/asm/
Dtopology.h9 struct cpu;
29 #define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) argument
30 #define topology_thread_id(cpu) (cpu_topology[cpu].thread_id) argument
31 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask) argument
32 #define topology_core_id(cpu) (cpu_topology[cpu].core_id) argument
33 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask) argument
34 #define topology_book_id(cpu) (cpu_topology[cpu].book_id) argument
35 #define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask) argument
36 #define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id) argument
37 #define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask) argument
[all …]
/Linux-v5.10/arch/ia64/kernel/
Derr_inject.c61 u32 cpu=dev->id; \
62 return sprintf(buf, "%lx\n", name[cpu]); \
70 unsigned int cpu=dev->id; \
71 name[cpu] = simple_strtoull(buf, NULL, 16); \
84 unsigned int cpu=dev->id; in show() local
88 printk(KERN_DEBUG "pal_mc_err_inject for cpu%d:\n", cpu); in show()
89 printk(KERN_DEBUG "err_type_info=%lx,\n", err_type_info[cpu]); in show()
90 printk(KERN_DEBUG "err_struct_info=%lx,\n", err_struct_info[cpu]); in show()
92 err_data_buffer[cpu].data1, in show()
93 err_data_buffer[cpu].data2, in show()
[all …]
/Linux-v5.10/Documentation/devicetree/bindings/cpu/
Dcpu-topology.txt20 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
25 CPU topology bindings allow one to associate cpu nodes with hierarchical groups
29 Currently, only ARM/RISC-V intend to use this cpu topology binding but it may be
32 The cpu nodes, as per bindings defined in [4], represent the devices that
35 A topology description containing phandles to cpu nodes that are not compliant
39 2 - cpu-map node
42 The ARM/RISC-V CPU topology is defined within the cpu-map node, which is a direct
46 - cpu-map node
51 cpu-map node.
[all …]

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