diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/sysfs.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/sysfs.c | 666 |
1 files changed, 0 insertions, 666 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/sysfs.c b/ANDROID_3.4.5/arch/powerpc/kernel/sysfs.c deleted file mode 100644 index 3529446c..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/sysfs.c +++ /dev/null @@ -1,666 +0,0 @@ -#include <linux/device.h> -#include <linux/cpu.h> -#include <linux/smp.h> -#include <linux/percpu.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/export.h> -#include <linux/nodemask.h> -#include <linux/cpumask.h> -#include <linux/notifier.h> - -#include <asm/current.h> -#include <asm/processor.h> -#include <asm/cputable.h> -#include <asm/hvcall.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/smp.h> -#include <asm/pmc.h> - -#include "cacheinfo.h" - -#ifdef CONFIG_PPC64 -#include <asm/paca.h> -#include <asm/lppaca.h> -#endif - -static DEFINE_PER_CPU(struct cpu, cpu_devices); - -/* - * SMT snooze delay stuff, 64-bit only for now - */ - -#ifdef CONFIG_PPC64 - -/* Time in microseconds we delay before sleeping in the idle loop */ -DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 }; - -static ssize_t store_smt_snooze_delay(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct cpu *cpu = container_of(dev, struct cpu, dev); - ssize_t ret; - long snooze; - - ret = sscanf(buf, "%ld", &snooze); - if (ret != 1) - return -EINVAL; - - per_cpu(smt_snooze_delay, cpu->dev.id) = snooze; - update_smt_snooze_delay(snooze); - - return count; -} - -static ssize_t show_smt_snooze_delay(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct cpu *cpu = container_of(dev, struct cpu, dev); - - return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->dev.id)); -} - -static DEVICE_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay, - store_smt_snooze_delay); - -static int __init setup_smt_snooze_delay(char *str) -{ - unsigned int cpu; - long snooze; - - if (!cpu_has_feature(CPU_FTR_SMT)) - return 1; - - snooze = simple_strtol(str, NULL, 10); - for_each_possible_cpu(cpu) - per_cpu(smt_snooze_delay, cpu) = snooze; - - return 1; -} -__setup("smt-snooze-delay=", setup_smt_snooze_delay); - -#endif /* CONFIG_PPC64 */ - -/* - * Enabling PMCs will slow partition context switch times so we only do - * it the first time we write to the PMCs. - */ - -static DEFINE_PER_CPU(char, pmcs_enabled); - -void ppc_enable_pmcs(void) -{ - ppc_set_pmu_inuse(1); - - /* Only need to enable them once */ - if (__get_cpu_var(pmcs_enabled)) - return; - - __get_cpu_var(pmcs_enabled) = 1; - - if (ppc_md.enable_pmcs) - ppc_md.enable_pmcs(); -} -EXPORT_SYMBOL(ppc_enable_pmcs); - -#define SYSFS_PMCSETUP(NAME, ADDRESS) \ -static void read_##NAME(void *val) \ -{ \ - *(unsigned long *)val = mfspr(ADDRESS); \ -} \ -static void write_##NAME(void *val) \ -{ \ - ppc_enable_pmcs(); \ - mtspr(ADDRESS, *(unsigned long *)val); \ -} \ -static ssize_t show_##NAME(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - struct cpu *cpu = container_of(dev, struct cpu, dev); \ - unsigned long val; \ - smp_call_function_single(cpu->dev.id, read_##NAME, &val, 1); \ - return sprintf(buf, "%lx\n", val); \ -} \ -static ssize_t __used \ - store_##NAME(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - struct cpu *cpu = container_of(dev, struct cpu, dev); \ - unsigned long val; \ - int ret = sscanf(buf, "%lx", &val); \ - if (ret != 1) \ - return -EINVAL; \ - smp_call_function_single(cpu->dev.id, write_##NAME, &val, 1); \ - return count; \ -} - - -/* Let's define all possible registers, we'll only hook up the ones - * that are implemented on the current processor - */ - -#if defined(CONFIG_PPC64) -#define HAS_PPC_PMC_CLASSIC 1 -#define HAS_PPC_PMC_IBM 1 -#define HAS_PPC_PMC_PA6T 1 -#elif defined(CONFIG_6xx) -#define HAS_PPC_PMC_CLASSIC 1 -#define HAS_PPC_PMC_IBM 1 -#define HAS_PPC_PMC_G4 1 -#endif - - -#ifdef HAS_PPC_PMC_CLASSIC -SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0); -SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1); -SYSFS_PMCSETUP(pmc1, SPRN_PMC1); -SYSFS_PMCSETUP(pmc2, SPRN_PMC2); -SYSFS_PMCSETUP(pmc3, SPRN_PMC3); -SYSFS_PMCSETUP(pmc4, SPRN_PMC4); -SYSFS_PMCSETUP(pmc5, SPRN_PMC5); -SYSFS_PMCSETUP(pmc6, SPRN_PMC6); - -#ifdef HAS_PPC_PMC_G4 -SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2); -#endif - -#ifdef CONFIG_PPC64 -SYSFS_PMCSETUP(pmc7, SPRN_PMC7); -SYSFS_PMCSETUP(pmc8, SPRN_PMC8); - -SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); -SYSFS_PMCSETUP(purr, SPRN_PURR); -SYSFS_PMCSETUP(spurr, SPRN_SPURR); -SYSFS_PMCSETUP(dscr, SPRN_DSCR); -SYSFS_PMCSETUP(pir, SPRN_PIR); - -static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); -static DEVICE_ATTR(spurr, 0600, show_spurr, NULL); -static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); -static DEVICE_ATTR(purr, 0600, show_purr, store_purr); -static DEVICE_ATTR(pir, 0400, show_pir, NULL); - -unsigned long dscr_default = 0; -EXPORT_SYMBOL(dscr_default); - -static ssize_t show_dscr_default(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%lx\n", dscr_default); -} - -static ssize_t __used store_dscr_default(struct device *dev, - struct device_attribute *attr, const char *buf, - size_t count) -{ - unsigned long val; - int ret = 0; - - ret = sscanf(buf, "%lx", &val); - if (ret != 1) - return -EINVAL; - dscr_default = val; - - return count; -} - -static DEVICE_ATTR(dscr_default, 0600, - show_dscr_default, store_dscr_default); - -static void sysfs_create_dscr_default(void) -{ - int err = 0; - if (cpu_has_feature(CPU_FTR_DSCR)) - err = device_create_file(cpu_subsys.dev_root, &dev_attr_dscr_default); -} -#endif /* CONFIG_PPC64 */ - -#ifdef HAS_PPC_PMC_PA6T -SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0); -SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1); -SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2); -SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3); -SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4); -SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5); -#ifdef CONFIG_DEBUG_KERNEL -SYSFS_PMCSETUP(hid0, SPRN_HID0); -SYSFS_PMCSETUP(hid1, SPRN_HID1); -SYSFS_PMCSETUP(hid4, SPRN_HID4); -SYSFS_PMCSETUP(hid5, SPRN_HID5); -SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0); -SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1); -SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2); -SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3); -SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4); -SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5); -SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6); -SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7); -SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8); -SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9); -SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT); -SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR); -SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR); -SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR); -SYSFS_PMCSETUP(der, SPRN_PA6T_DER); -SYSFS_PMCSETUP(mer, SPRN_PA6T_MER); -SYSFS_PMCSETUP(ber, SPRN_PA6T_BER); -SYSFS_PMCSETUP(ier, SPRN_PA6T_IER); -SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER); -SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR); -SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0); -SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1); -SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2); -SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3); -#endif /* CONFIG_DEBUG_KERNEL */ -#endif /* HAS_PPC_PMC_PA6T */ - -#ifdef HAS_PPC_PMC_IBM -static struct device_attribute ibm_common_attrs[] = { - __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), - __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), -}; -#endif /* HAS_PPC_PMC_G4 */ - -#ifdef HAS_PPC_PMC_G4 -static struct device_attribute g4_common_attrs[] = { - __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), - __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), - __ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2), -}; -#endif /* HAS_PPC_PMC_G4 */ - -static struct device_attribute classic_pmc_attrs[] = { - __ATTR(pmc1, 0600, show_pmc1, store_pmc1), - __ATTR(pmc2, 0600, show_pmc2, store_pmc2), - __ATTR(pmc3, 0600, show_pmc3, store_pmc3), - __ATTR(pmc4, 0600, show_pmc4, store_pmc4), - __ATTR(pmc5, 0600, show_pmc5, store_pmc5), - __ATTR(pmc6, 0600, show_pmc6, store_pmc6), -#ifdef CONFIG_PPC64 - __ATTR(pmc7, 0600, show_pmc7, store_pmc7), - __ATTR(pmc8, 0600, show_pmc8, store_pmc8), -#endif -}; - -#ifdef HAS_PPC_PMC_PA6T -static struct device_attribute pa6t_attrs[] = { - __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), - __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), - __ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0), - __ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1), - __ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2), - __ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3), - __ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4), - __ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5), -#ifdef CONFIG_DEBUG_KERNEL - __ATTR(hid0, 0600, show_hid0, store_hid0), - __ATTR(hid1, 0600, show_hid1, store_hid1), - __ATTR(hid4, 0600, show_hid4, store_hid4), - __ATTR(hid5, 0600, show_hid5, store_hid5), - __ATTR(ima0, 0600, show_ima0, store_ima0), - __ATTR(ima1, 0600, show_ima1, store_ima1), - __ATTR(ima2, 0600, show_ima2, store_ima2), - __ATTR(ima3, 0600, show_ima3, store_ima3), - __ATTR(ima4, 0600, show_ima4, store_ima4), - __ATTR(ima5, 0600, show_ima5, store_ima5), - __ATTR(ima6, 0600, show_ima6, store_ima6), - __ATTR(ima7, 0600, show_ima7, store_ima7), - __ATTR(ima8, 0600, show_ima8, store_ima8), - __ATTR(ima9, 0600, show_ima9, store_ima9), - __ATTR(imaat, 0600, show_imaat, store_imaat), - __ATTR(btcr, 0600, show_btcr, store_btcr), - __ATTR(pccr, 0600, show_pccr, store_pccr), - __ATTR(rpccr, 0600, show_rpccr, store_rpccr), - __ATTR(der, 0600, show_der, store_der), - __ATTR(mer, 0600, show_mer, store_mer), - __ATTR(ber, 0600, show_ber, store_ber), - __ATTR(ier, 0600, show_ier, store_ier), - __ATTR(sier, 0600, show_sier, store_sier), - __ATTR(siar, 0600, show_siar, store_siar), - __ATTR(tsr0, 0600, show_tsr0, store_tsr0), - __ATTR(tsr1, 0600, show_tsr1, store_tsr1), - __ATTR(tsr2, 0600, show_tsr2, store_tsr2), - __ATTR(tsr3, 0600, show_tsr3, store_tsr3), -#endif /* CONFIG_DEBUG_KERNEL */ -}; -#endif /* HAS_PPC_PMC_PA6T */ -#endif /* HAS_PPC_PMC_CLASSIC */ - -static void __cpuinit register_cpu_online(unsigned int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - struct device *s = &c->dev; - struct device_attribute *attrs, *pmc_attrs; - int i, nattrs; - -#ifdef CONFIG_PPC64 - if (cpu_has_feature(CPU_FTR_SMT)) - device_create_file(s, &dev_attr_smt_snooze_delay); -#endif - - /* PMC stuff */ - switch (cur_cpu_spec->pmc_type) { -#ifdef HAS_PPC_PMC_IBM - case PPC_PMC_IBM: - attrs = ibm_common_attrs; - nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); - pmc_attrs = classic_pmc_attrs; - break; -#endif /* HAS_PPC_PMC_IBM */ -#ifdef HAS_PPC_PMC_G4 - case PPC_PMC_G4: - attrs = g4_common_attrs; - nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute); - pmc_attrs = classic_pmc_attrs; - break; -#endif /* HAS_PPC_PMC_G4 */ -#ifdef HAS_PPC_PMC_PA6T - case PPC_PMC_PA6T: - /* PA Semi starts counting at PMC0 */ - attrs = pa6t_attrs; - nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); - pmc_attrs = NULL; - break; -#endif /* HAS_PPC_PMC_PA6T */ - default: - attrs = NULL; - nattrs = 0; - pmc_attrs = NULL; - } - - for (i = 0; i < nattrs; i++) - device_create_file(s, &attrs[i]); - - if (pmc_attrs) - for (i = 0; i < cur_cpu_spec->num_pmcs; i++) - device_create_file(s, &pmc_attrs[i]); - -#ifdef CONFIG_PPC64 - if (cpu_has_feature(CPU_FTR_MMCRA)) - device_create_file(s, &dev_attr_mmcra); - - if (cpu_has_feature(CPU_FTR_PURR)) - device_create_file(s, &dev_attr_purr); - - if (cpu_has_feature(CPU_FTR_SPURR)) - device_create_file(s, &dev_attr_spurr); - - if (cpu_has_feature(CPU_FTR_DSCR)) - device_create_file(s, &dev_attr_dscr); - - if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) - device_create_file(s, &dev_attr_pir); -#endif /* CONFIG_PPC64 */ - - cacheinfo_cpu_online(cpu); -} - -#ifdef CONFIG_HOTPLUG_CPU -static void unregister_cpu_online(unsigned int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - struct device *s = &c->dev; - struct device_attribute *attrs, *pmc_attrs; - int i, nattrs; - - BUG_ON(!c->hotpluggable); - -#ifdef CONFIG_PPC64 - if (cpu_has_feature(CPU_FTR_SMT)) - device_remove_file(s, &dev_attr_smt_snooze_delay); -#endif - - /* PMC stuff */ - switch (cur_cpu_spec->pmc_type) { -#ifdef HAS_PPC_PMC_IBM - case PPC_PMC_IBM: - attrs = ibm_common_attrs; - nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); - pmc_attrs = classic_pmc_attrs; - break; -#endif /* HAS_PPC_PMC_IBM */ -#ifdef HAS_PPC_PMC_G4 - case PPC_PMC_G4: - attrs = g4_common_attrs; - nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute); - pmc_attrs = classic_pmc_attrs; - break; -#endif /* HAS_PPC_PMC_G4 */ -#ifdef HAS_PPC_PMC_PA6T - case PPC_PMC_PA6T: - /* PA Semi starts counting at PMC0 */ - attrs = pa6t_attrs; - nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); - pmc_attrs = NULL; - break; -#endif /* HAS_PPC_PMC_PA6T */ - default: - attrs = NULL; - nattrs = 0; - pmc_attrs = NULL; - } - - for (i = 0; i < nattrs; i++) - device_remove_file(s, &attrs[i]); - - if (pmc_attrs) - for (i = 0; i < cur_cpu_spec->num_pmcs; i++) - device_remove_file(s, &pmc_attrs[i]); - -#ifdef CONFIG_PPC64 - if (cpu_has_feature(CPU_FTR_MMCRA)) - device_remove_file(s, &dev_attr_mmcra); - - if (cpu_has_feature(CPU_FTR_PURR)) - device_remove_file(s, &dev_attr_purr); - - if (cpu_has_feature(CPU_FTR_SPURR)) - device_remove_file(s, &dev_attr_spurr); - - if (cpu_has_feature(CPU_FTR_DSCR)) - device_remove_file(s, &dev_attr_dscr); - - if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) - device_remove_file(s, &dev_attr_pir); -#endif /* CONFIG_PPC64 */ - - cacheinfo_cpu_offline(cpu); -} - -#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE -ssize_t arch_cpu_probe(const char *buf, size_t count) -{ - if (ppc_md.cpu_probe) - return ppc_md.cpu_probe(buf, count); - - return -EINVAL; -} - -ssize_t arch_cpu_release(const char *buf, size_t count) -{ - if (ppc_md.cpu_release) - return ppc_md.cpu_release(buf, count); - - return -EINVAL; -} -#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */ - -#endif /* CONFIG_HOTPLUG_CPU */ - -static int __cpuinit sysfs_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - unsigned int cpu = (unsigned int)(long)hcpu; - - switch (action) { - case CPU_ONLINE: - case CPU_ONLINE_FROZEN: - register_cpu_online(cpu); - break; -#ifdef CONFIG_HOTPLUG_CPU - case CPU_DEAD: - case CPU_DEAD_FROZEN: - unregister_cpu_online(cpu); - break; -#endif - } - return NOTIFY_OK; -} - -static struct notifier_block __cpuinitdata sysfs_cpu_nb = { - .notifier_call = sysfs_cpu_notify, -}; - -static DEFINE_MUTEX(cpu_mutex); - -int cpu_add_dev_attr(struct device_attribute *attr) -{ - int cpu; - - mutex_lock(&cpu_mutex); - - for_each_possible_cpu(cpu) { - device_create_file(get_cpu_device(cpu), attr); - } - - mutex_unlock(&cpu_mutex); - return 0; -} -EXPORT_SYMBOL_GPL(cpu_add_dev_attr); - -int cpu_add_dev_attr_group(struct attribute_group *attrs) -{ - int cpu; - struct device *dev; - int ret; - - mutex_lock(&cpu_mutex); - - for_each_possible_cpu(cpu) { - dev = get_cpu_device(cpu); - ret = sysfs_create_group(&dev->kobj, attrs); - WARN_ON(ret != 0); - } - - mutex_unlock(&cpu_mutex); - return 0; -} -EXPORT_SYMBOL_GPL(cpu_add_dev_attr_group); - - -void cpu_remove_dev_attr(struct device_attribute *attr) -{ - int cpu; - - mutex_lock(&cpu_mutex); - - for_each_possible_cpu(cpu) { - device_remove_file(get_cpu_device(cpu), attr); - } - - mutex_unlock(&cpu_mutex); -} -EXPORT_SYMBOL_GPL(cpu_remove_dev_attr); - -void cpu_remove_dev_attr_group(struct attribute_group *attrs) -{ - int cpu; - struct device *dev; - - mutex_lock(&cpu_mutex); - - for_each_possible_cpu(cpu) { - dev = get_cpu_device(cpu); - sysfs_remove_group(&dev->kobj, attrs); - } - - mutex_unlock(&cpu_mutex); -} -EXPORT_SYMBOL_GPL(cpu_remove_dev_attr_group); - - -/* NUMA stuff */ - -#ifdef CONFIG_NUMA -static void register_nodes(void) -{ - int i; - - for (i = 0; i < MAX_NUMNODES; i++) - register_one_node(i); -} - -int sysfs_add_device_to_node(struct device *dev, int nid) -{ - struct node *node = &node_devices[nid]; - return sysfs_create_link(&node->dev.kobj, &dev->kobj, - kobject_name(&dev->kobj)); -} -EXPORT_SYMBOL_GPL(sysfs_add_device_to_node); - -void sysfs_remove_device_from_node(struct device *dev, int nid) -{ - struct node *node = &node_devices[nid]; - sysfs_remove_link(&node->dev.kobj, kobject_name(&dev->kobj)); -} -EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node); - -#else -static void register_nodes(void) -{ - return; -} - -#endif - -/* Only valid if CPU is present. */ -static ssize_t show_physical_id(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct cpu *cpu = container_of(dev, struct cpu, dev); - - return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->dev.id)); -} -static DEVICE_ATTR(physical_id, 0444, show_physical_id, NULL); - -static int __init topology_init(void) -{ - int cpu; - - register_nodes(); - register_cpu_notifier(&sysfs_cpu_nb); - - for_each_possible_cpu(cpu) { - struct cpu *c = &per_cpu(cpu_devices, cpu); - - /* - * For now, we just see if the system supports making - * the RTAS calls for CPU hotplug. But, there may be a - * more comprehensive way to do this for an individual - * CPU. For instance, the boot cpu might never be valid - * for hotplugging. - */ - if (ppc_md.cpu_die) - c->hotpluggable = 1; - - if (cpu_online(cpu) || c->hotpluggable) { - register_cpu(c, cpu); - - device_create_file(&c->dev, &dev_attr_physical_id); - } - - if (cpu_online(cpu)) - register_cpu_online(cpu); - } -#ifdef CONFIG_PPC64 - sysfs_create_dscr_default(); -#endif /* CONFIG_PPC64 */ - - return 0; -} -subsys_initcall(topology_init); |