diff options
Diffstat (limited to 'arch/powerpc/kernel/sysfs.c')
-rw-r--r-- | arch/powerpc/kernel/sysfs.c | 572 |
1 files changed, 337 insertions, 235 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 80a676da11cb..0f39a6b84132 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -9,16 +9,17 @@ #include <linux/nodemask.h> #include <linux/cpumask.h> #include <linux/notifier.h> +#include <linux/of.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 <asm/firmware.h> +#include <asm/idle.h> #include <asm/svm.h> #include "cacheinfo.h" @@ -31,29 +32,27 @@ 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 */ -static DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 }; +/* + * Snooze delay has not been hooked up since 3fa8cad82b94 ("powerpc/pseries/cpuidle: + * smt-snooze-delay cleanup.") and has been broken even longer. As was foretold in + * 2014: + * + * "ppc64_util currently utilises it. Once we fix ppc64_util, propose to clean + * up the kernel code." + * + * powerpc-utils stopped using it as of 1.3.8. At some point in the future this + * code should be removed. + */ 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; + pr_warn_once("%s (%d) stored to unsupported smt_snooze_delay, which has no effect.\n", + current->comm, current->pid); return count; } @@ -61,9 +60,9 @@ 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)); + pr_warn_once("%s (%d) read from unsupported smt_snooze_delay\n", + current->comm, current->pid); + return sprintf(buf, "100\n"); } static DEVICE_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay, @@ -71,23 +70,170 @@ static DEVICE_ATTR(smt_snooze_delay, 0644, show_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; - + pr_warn("smt-snooze-delay command line option has no effect\n"); return 1; } __setup("smt-snooze-delay=", setup_smt_snooze_delay); #endif /* CONFIG_PPC64 */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#define __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, EXTRA) \ +static void read_##NAME(void *val) \ +{ \ + *(unsigned long *)val = mfspr(ADDRESS); \ +} \ +static void write_##NAME(void *val) \ +{ \ + EXTRA; \ + mtspr(ADDRESS, *(unsigned long *)val); \ +} + +#define __SYSFS_SPRSETUP_SHOW_STORE(NAME) \ +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; \ +} + +#define SYSFS_PMCSETUP(NAME, ADDRESS) \ + __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ppc_enable_pmcs()) \ + __SYSFS_SPRSETUP_SHOW_STORE(NAME) +#define SYSFS_SPRSETUP(NAME, ADDRESS) \ + __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ) \ + __SYSFS_SPRSETUP_SHOW_STORE(NAME) + +#define SYSFS_SPRSETUP_SHOW_STORE(NAME) \ + __SYSFS_SPRSETUP_SHOW_STORE(NAME) + +#ifdef CONFIG_PPC64 + +/* + * This is the system wide DSCR register default value. Any + * change to this default value through the sysfs interface + * will update all per cpu DSCR default values across the + * system stored in their respective PACA structures. + */ +static unsigned long dscr_default; + +/** + * read_dscr() - Fetch the cpu specific DSCR default + * @val: Returned cpu specific DSCR default value + * + * This function returns the per cpu DSCR default value + * for any cpu which is contained in it's PACA structure. + */ +static void read_dscr(void *val) +{ + *(unsigned long *)val = get_paca()->dscr_default; +} + + +/** + * write_dscr() - Update the cpu specific DSCR default + * @val: New cpu specific DSCR default value to update + * + * This function updates the per cpu DSCR default value + * for any cpu which is contained in it's PACA structure. + */ +static void write_dscr(void *val) +{ + get_paca()->dscr_default = *(unsigned long *)val; + if (!current->thread.dscr_inherit) { + current->thread.dscr = *(unsigned long *)val; + mtspr(SPRN_DSCR, *(unsigned long *)val); + } +} + +SYSFS_SPRSETUP_SHOW_STORE(dscr); +static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); + +static void add_write_permission_dev_attr(struct device_attribute *attr) +{ + attr->attr.mode |= 0200; +} + +/** + * show_dscr_default() - Fetch the system wide DSCR default + * @dev: Device structure + * @attr: Device attribute structure + * @buf: Interface buffer + * + * This function returns the system wide DSCR default value. + */ +static ssize_t show_dscr_default(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%lx\n", dscr_default); +} + +/** + * store_dscr_default() - Update the system wide DSCR default + * @dev: Device structure + * @attr: Device attribute structure + * @buf: Interface buffer + * @count: Size of the update + * + * This function updates the system wide DSCR default value. + */ +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; + + on_each_cpu(write_dscr, &val, 1); + + return count; +} + +static DEVICE_ATTR(dscr_default, 0600, + show_dscr_default, store_dscr_default); + +static void __init sysfs_create_dscr_default(void) +{ + if (cpu_has_feature(CPU_FTR_DSCR)) { + struct device *dev_root; + int cpu; + + dscr_default = spr_default_dscr; + for_each_possible_cpu(cpu) + paca_ptrs[cpu]->dscr_default = dscr_default; + + dev_root = bus_get_dev_root(&cpu_subsys); + if (dev_root) { + device_create_file(dev_root, &dev_attr_dscr_default); + put_device(dev_root); + } + } +} +#endif /* CONFIG_PPC64 */ + +#ifdef CONFIG_PPC_E500 #define MAX_BIT 63 static u64 pw20_wt; @@ -407,84 +553,35 @@ void ppc_enable_pmcs(void) } EXPORT_SYMBOL(ppc_enable_pmcs); -#define __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, EXTRA) \ -static void read_##NAME(void *val) \ -{ \ - *(unsigned long *)val = mfspr(ADDRESS); \ -} \ -static void write_##NAME(void *val) \ -{ \ - EXTRA; \ - mtspr(ADDRESS, *(unsigned long *)val); \ -} -#define __SYSFS_SPRSETUP_SHOW_STORE(NAME) \ -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; \ -} - -#define SYSFS_PMCSETUP(NAME, ADDRESS) \ - __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ppc_enable_pmcs()) \ - __SYSFS_SPRSETUP_SHOW_STORE(NAME) -#define SYSFS_SPRSETUP(NAME, ADDRESS) \ - __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ) \ - __SYSFS_SPRSETUP_SHOW_STORE(NAME) - -#define SYSFS_SPRSETUP_SHOW_STORE(NAME) \ - __SYSFS_SPRSETUP_SHOW_STORE(NAME) /* Let's define all possible registers, we'll only hook up the ones * that are implemented on the current processor */ -#if defined(CONFIG_PPC64) +#ifdef CONFIG_PMU_SYSFS +#if defined(CONFIG_PPC64) || defined(CONFIG_PPC_BOOK3S_32) #define HAS_PPC_PMC_CLASSIC 1 #define HAS_PPC_PMC_IBM 1 -#define HAS_PPC_PMC_PA6T 1 -#elif defined(CONFIG_PPC_BOOK3S_32) -#define HAS_PPC_PMC_CLASSIC 1 -#define HAS_PPC_PMC_IBM 1 -#define HAS_PPC_PMC_G4 1 #endif +#ifdef CONFIG_PPC64 +#define HAS_PPC_PMC_PA6T 1 +#define HAS_PPC_PMC56 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); +#ifdef CONFIG_PPC_BOOK3S_32 +#define HAS_PPC_PMC_G4 1 #endif +#endif /* CONFIG_PMU_SYSFS */ +#if defined(CONFIG_PPC64) && defined(CONFIG_DEBUG_MISC) +#define HAS_PPC_PA6T +#endif +/* + * SPRs which are not related to PMU. + */ #ifdef CONFIG_PPC64 -SYSFS_PMCSETUP(pmc7, SPRN_PMC7); -SYSFS_PMCSETUP(pmc8, SPRN_PMC8); - -SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); SYSFS_SPRSETUP(purr, SPRN_PURR); SYSFS_SPRSETUP(spurr, SPRN_SPURR); SYSFS_SPRSETUP(pir, SPRN_PIR); @@ -495,115 +592,40 @@ SYSFS_SPRSETUP(tscr, SPRN_TSCR); enable write when needed with a separate function. Lets be conservative and default to pseries. */ -static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); static DEVICE_ATTR(purr, 0400, show_purr, store_purr); static DEVICE_ATTR(pir, 0400, show_pir, NULL); static DEVICE_ATTR(tscr, 0600, show_tscr, store_tscr); +#endif /* CONFIG_PPC64 */ -/* - * This is the system wide DSCR register default value. Any - * change to this default value through the sysfs interface - * will update all per cpu DSCR default values across the - * system stored in their respective PACA structures. - */ -static unsigned long dscr_default; - -/** - * read_dscr() - Fetch the cpu specific DSCR default - * @val: Returned cpu specific DSCR default value - * - * This function returns the per cpu DSCR default value - * for any cpu which is contained in it's PACA structure. - */ -static void read_dscr(void *val) -{ - *(unsigned long *)val = get_paca()->dscr_default; -} - - -/** - * write_dscr() - Update the cpu specific DSCR default - * @val: New cpu specific DSCR default value to update - * - * This function updates the per cpu DSCR default value - * for any cpu which is contained in it's PACA structure. - */ -static void write_dscr(void *val) -{ - get_paca()->dscr_default = *(unsigned long *)val; - if (!current->thread.dscr_inherit) { - current->thread.dscr = *(unsigned long *)val; - mtspr(SPRN_DSCR, *(unsigned long *)val); - } -} - -SYSFS_SPRSETUP_SHOW_STORE(dscr); -static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); - -static void add_write_permission_dev_attr(struct device_attribute *attr) -{ - attr->attr.mode |= 0200; -} - -/** - * show_dscr_default() - Fetch the system wide DSCR default - * @dev: Device structure - * @attr: Device attribute structure - * @buf: Interface buffer - * - * This function returns the system wide DSCR default value. - */ -static ssize_t show_dscr_default(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%lx\n", dscr_default); -} - -/** - * store_dscr_default() - Update the system wide DSCR default - * @dev: Device structure - * @attr: Device attribute structure - * @buf: Interface buffer - * @count: Size of the update - * - * This function updates the system wide DSCR default value. - */ -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; +#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); +#endif - on_each_cpu(write_dscr, &val, 1); +#ifdef HAS_PPC_PMC_G4 +SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2); +#endif - return count; -} +#ifdef HAS_PPC_PMC56 +SYSFS_PMCSETUP(pmc7, SPRN_PMC7); +SYSFS_PMCSETUP(pmc8, SPRN_PMC8); -static DEVICE_ATTR(dscr_default, 0600, - show_dscr_default, store_dscr_default); +SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); +SYSFS_PMCSETUP(mmcr3, SPRN_MMCR3); -static void sysfs_create_dscr_default(void) -{ - if (cpu_has_feature(CPU_FTR_DSCR)) { - int err = 0; - int cpu; +static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); +static DEVICE_ATTR(mmcr3, 0600, show_mmcr3, store_mmcr3); +#endif /* HAS_PPC_PMC56 */ - dscr_default = spr_default_dscr; - for_each_possible_cpu(cpu) - paca_ptrs[cpu]->dscr_default = dscr_default; - 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); @@ -612,7 +634,9 @@ 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_MISC +#endif + +#ifdef HAS_PPC_PA6T SYSFS_SPRSETUP(hid0, SPRN_HID0); SYSFS_SPRSETUP(hid1, SPRN_HID1); SYSFS_SPRSETUP(hid4, SPRN_HID4); @@ -641,15 +665,14 @@ SYSFS_SPRSETUP(tsr0, SPRN_PA6T_TSR0); SYSFS_SPRSETUP(tsr1, SPRN_PA6T_TSR1); SYSFS_SPRSETUP(tsr2, SPRN_PA6T_TSR2); SYSFS_SPRSETUP(tsr3, SPRN_PA6T_TSR3); -#endif /* CONFIG_DEBUG_MISC */ -#endif /* HAS_PPC_PMC_PA6T */ +#endif /* HAS_PPC_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 */ +#endif /* HAS_PPC_PMC_IBM */ #ifdef HAS_PPC_PMC_G4 static struct device_attribute g4_common_attrs[] = { @@ -659,6 +682,7 @@ static struct device_attribute g4_common_attrs[] = { }; #endif /* HAS_PPC_PMC_G4 */ +#ifdef HAS_PPC_PMC_CLASSIC static struct device_attribute classic_pmc_attrs[] = { __ATTR(pmc1, 0600, show_pmc1, store_pmc1), __ATTR(pmc2, 0600, show_pmc2, store_pmc2), @@ -666,14 +690,16 @@ static struct device_attribute classic_pmc_attrs[] = { __ATTR(pmc4, 0600, show_pmc4, store_pmc4), __ATTR(pmc5, 0600, show_pmc5, store_pmc5), __ATTR(pmc6, 0600, show_pmc6, store_pmc6), -#ifdef CONFIG_PPC64 +#ifdef HAS_PPC_PMC56 __ATTR(pmc7, 0600, show_pmc7, store_pmc7), __ATTR(pmc8, 0600, show_pmc8, store_pmc8), #endif }; +#endif -#ifdef HAS_PPC_PMC_PA6T +#if defined(HAS_PPC_PMC_PA6T) || defined(HAS_PPC_PA6T) static struct device_attribute pa6t_attrs[] = { +#ifdef HAS_PPC_PMC_PA6T __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), __ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0), @@ -682,7 +708,8 @@ static struct device_attribute pa6t_attrs[] = { __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_MISC +#endif +#ifdef HAS_PPC_PA6T __ATTR(hid0, 0600, show_hid0, store_hid0), __ATTR(hid1, 0600, show_hid1, store_hid1), __ATTR(hid4, 0600, show_hid4, store_hid4), @@ -711,10 +738,9 @@ static struct device_attribute pa6t_attrs[] = { __ATTR(tsr1, 0600, show_tsr1, store_tsr1), __ATTR(tsr2, 0600, show_tsr2, store_tsr2), __ATTR(tsr3, 0600, show_tsr3, store_tsr3), -#endif /* CONFIG_DEBUG_MISC */ +#endif /* HAS_PPC_PA6T */ }; -#endif /* HAS_PPC_PMC_PA6T */ -#endif /* HAS_PPC_PMC_CLASSIC */ +#endif #ifdef CONFIG_PPC_SVM static ssize_t show_svm(struct device *dev, struct device_attribute *attr, char *buf) @@ -723,16 +749,89 @@ static ssize_t show_svm(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR(svm, 0444, show_svm, NULL); -static void create_svm_file(void) +static void __init create_svm_file(void) { - device_create_file(cpu_subsys.dev_root, &dev_attr_svm); + struct device *dev_root = bus_get_dev_root(&cpu_subsys); + + if (dev_root) { + device_create_file(dev_root, &dev_attr_svm); + put_device(dev_root); + } } #else -static void create_svm_file(void) +static void __init create_svm_file(void) { } #endif /* CONFIG_PPC_SVM */ +#ifdef CONFIG_PPC_PSERIES +static void read_idle_purr(void *val) +{ + u64 *ret = val; + + *ret = read_this_idle_purr(); +} + +static ssize_t idle_purr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + u64 val; + + smp_call_function_single(cpu->dev.id, read_idle_purr, &val, 1); + return sprintf(buf, "%llx\n", val); +} +static DEVICE_ATTR(idle_purr, 0400, idle_purr_show, NULL); + +static void create_idle_purr_file(struct device *s) +{ + if (firmware_has_feature(FW_FEATURE_LPAR)) + device_create_file(s, &dev_attr_idle_purr); +} + +static void remove_idle_purr_file(struct device *s) +{ + if (firmware_has_feature(FW_FEATURE_LPAR)) + device_remove_file(s, &dev_attr_idle_purr); +} + +static void read_idle_spurr(void *val) +{ + u64 *ret = val; + + *ret = read_this_idle_spurr(); +} + +static ssize_t idle_spurr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cpu *cpu = container_of(dev, struct cpu, dev); + u64 val; + + smp_call_function_single(cpu->dev.id, read_idle_spurr, &val, 1); + return sprintf(buf, "%llx\n", val); +} +static DEVICE_ATTR(idle_spurr, 0400, idle_spurr_show, NULL); + +static void create_idle_spurr_file(struct device *s) +{ + if (firmware_has_feature(FW_FEATURE_LPAR)) + device_create_file(s, &dev_attr_idle_spurr); +} + +static void remove_idle_spurr_file(struct device *s) +{ + if (firmware_has_feature(FW_FEATURE_LPAR)) + device_remove_file(s, &dev_attr_idle_spurr); +} + +#else /* CONFIG_PPC_PSERIES */ +#define create_idle_purr_file(s) +#define remove_idle_purr_file(s) +#define create_idle_spurr_file(s) +#define remove_idle_spurr_file(s) +#endif /* CONFIG_PPC_PSERIES */ + static int register_cpu_online(unsigned int cpu) { struct cpu *c = &per_cpu(cpu_devices, cpu); @@ -754,25 +853,25 @@ static int register_cpu_online(unsigned int cpu) #ifdef HAS_PPC_PMC_IBM case PPC_PMC_IBM: attrs = ibm_common_attrs; - nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); + nattrs = ARRAY_SIZE(ibm_common_attrs); 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); + nattrs = ARRAY_SIZE(g4_common_attrs); pmc_attrs = classic_pmc_attrs; break; #endif /* HAS_PPC_PMC_G4 */ -#ifdef HAS_PPC_PMC_PA6T +#if defined(HAS_PPC_PMC_PA6T) || defined(HAS_PPC_PA6T) case PPC_PMC_PA6T: /* PA Semi starts counting at PMC0 */ attrs = pa6t_attrs; - nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); + nattrs = ARRAY_SIZE(pa6t_attrs); pmc_attrs = NULL; break; -#endif /* HAS_PPC_PMC_PA6T */ +#endif default: attrs = NULL; nattrs = 0; @@ -787,17 +886,25 @@ static int register_cpu_online(unsigned int cpu) device_create_file(s, &pmc_attrs[i]); #ifdef CONFIG_PPC64 +#ifdef CONFIG_PMU_SYSFS if (cpu_has_feature(CPU_FTR_MMCRA)) device_create_file(s, &dev_attr_mmcra); + if (cpu_has_feature(CPU_FTR_ARCH_31)) + device_create_file(s, &dev_attr_mmcr3); +#endif /* CONFIG_PMU_SYSFS */ + if (cpu_has_feature(CPU_FTR_PURR)) { if (!firmware_has_feature(FW_FEATURE_LPAR)) add_write_permission_dev_attr(&dev_attr_purr); device_create_file(s, &dev_attr_purr); + create_idle_purr_file(s); } - if (cpu_has_feature(CPU_FTR_SPURR)) + if (cpu_has_feature(CPU_FTR_SPURR)) { device_create_file(s, &dev_attr_spurr); + create_idle_spurr_file(s); + } if (cpu_has_feature(CPU_FTR_DSCR)) device_create_file(s, &dev_attr_dscr); @@ -810,7 +917,7 @@ static int register_cpu_online(unsigned int cpu) device_create_file(s, &dev_attr_tscr); #endif /* CONFIG_PPC64 */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { device_create_file(s, &dev_attr_pw20_state); device_create_file(s, &dev_attr_pw20_wait_time); @@ -831,7 +938,8 @@ static int unregister_cpu_online(unsigned int cpu) struct device_attribute *attrs, *pmc_attrs; int i, nattrs; - BUG_ON(!c->hotpluggable); + if (WARN_RATELIMIT(!c->hotpluggable, "cpu %d can't be offlined\n", cpu)) + return -EBUSY; #ifdef CONFIG_PPC64 if (cpu_has_feature(CPU_FTR_SMT)) @@ -843,25 +951,25 @@ static int unregister_cpu_online(unsigned int cpu) #ifdef HAS_PPC_PMC_IBM case PPC_PMC_IBM: attrs = ibm_common_attrs; - nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); + nattrs = ARRAY_SIZE(ibm_common_attrs); 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); + nattrs = ARRAY_SIZE(g4_common_attrs); pmc_attrs = classic_pmc_attrs; break; #endif /* HAS_PPC_PMC_G4 */ -#ifdef HAS_PPC_PMC_PA6T +#if defined(HAS_PPC_PMC_PA6T) || defined(HAS_PPC_PA6T) case PPC_PMC_PA6T: /* PA Semi starts counting at PMC0 */ attrs = pa6t_attrs; - nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); + nattrs = ARRAY_SIZE(pa6t_attrs); pmc_attrs = NULL; break; -#endif /* HAS_PPC_PMC_PA6T */ +#endif default: attrs = NULL; nattrs = 0; @@ -876,14 +984,23 @@ static int unregister_cpu_online(unsigned int cpu) device_remove_file(s, &pmc_attrs[i]); #ifdef CONFIG_PPC64 +#ifdef CONFIG_PMU_SYSFS if (cpu_has_feature(CPU_FTR_MMCRA)) device_remove_file(s, &dev_attr_mmcra); - if (cpu_has_feature(CPU_FTR_PURR)) + if (cpu_has_feature(CPU_FTR_ARCH_31)) + device_remove_file(s, &dev_attr_mmcr3); +#endif /* CONFIG_PMU_SYSFS */ + + if (cpu_has_feature(CPU_FTR_PURR)) { device_remove_file(s, &dev_attr_purr); + remove_idle_purr_file(s); + } - if (cpu_has_feature(CPU_FTR_SPURR)) + if (cpu_has_feature(CPU_FTR_SPURR)) { device_remove_file(s, &dev_attr_spurr); + remove_idle_spurr_file(s); + } if (cpu_has_feature(CPU_FTR_DSCR)) device_remove_file(s, &dev_attr_dscr); @@ -896,7 +1013,7 @@ static int unregister_cpu_online(unsigned int cpu) device_remove_file(s, &dev_attr_tscr); #endif /* CONFIG_PPC64 */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { device_remove_file(s, &dev_attr_pw20_state); device_remove_file(s, &dev_attr_pw20_wait_time); @@ -1003,14 +1120,6 @@ 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]; @@ -1025,13 +1134,6 @@ void sysfs_remove_device_from_node(struct device *dev, int 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. */ @@ -1048,11 +1150,10 @@ static int __init topology_init(void) { int cpu, r; - register_nodes(); - for_each_possible_cpu(cpu) { struct cpu *c = &per_cpu(cpu_devices, cpu); +#ifdef CONFIG_HOTPLUG_CPU /* * For now, we just see if the system supports making * the RTAS calls for CPU hotplug. But, there may be a @@ -1060,8 +1161,9 @@ static int __init topology_init(void) * CPU. For instance, the boot cpu might never be valid * for hotplugging. */ - if (ppc_md.cpu_die) + if (smp_ops && smp_ops->cpu_offline_self) c->hotpluggable = 1; +#endif if (cpu_online(cpu) || c->hotpluggable) { register_cpu(c, cpu); |