diff options
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/sysfs.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/sysfs.c b/arch/sparc64/kernel/sysfs.c index 0808c214dc7..a684a79ece4 100644 --- a/arch/sparc64/kernel/sysfs.c +++ b/arch/sparc64/kernel/sysfs.c @@ -10,14 +10,100 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices); +#define SHOW_ULONG_NAME(NAME, MEMBER) \ +static ssize_t show_##NAME(struct sys_device *dev, char *buf) \ +{ \ + struct cpu *cpu = container_of(dev, struct cpu, sysdev); \ + cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \ + return sprintf(buf, "%lu\n", c->MEMBER); \ +} + +#define SHOW_UINT_NAME(NAME, MEMBER) \ +static ssize_t show_##NAME(struct sys_device *dev, char *buf) \ +{ \ + struct cpu *cpu = container_of(dev, struct cpu, sysdev); \ + cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \ + return sprintf(buf, "%u\n", c->MEMBER); \ +} + +SHOW_ULONG_NAME(clock_tick, clock_tick); +SHOW_ULONG_NAME(udelay_val, udelay_val); +SHOW_UINT_NAME(l1_dcache_size, dcache_size); +SHOW_UINT_NAME(l1_dcache_line_size, dcache_line_size); +SHOW_UINT_NAME(l1_icache_size, icache_size); +SHOW_UINT_NAME(l1_icache_line_size, icache_line_size); +SHOW_UINT_NAME(l2_cache_size, ecache_size); +SHOW_UINT_NAME(l2_cache_line_size, ecache_line_size); + +static struct sysdev_attribute cpu_core_attrs[] = { + _SYSDEV_ATTR(clock_tick, 0444, show_clock_tick, NULL), + _SYSDEV_ATTR(udelay_val, 0444, show_udelay_val, NULL), + _SYSDEV_ATTR(l1_dcache_size, 0444, show_l1_dcache_size, NULL), + _SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL), + _SYSDEV_ATTR(l1_icache_size, 0444, show_l1_icache_size, NULL), + _SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL), + _SYSDEV_ATTR(l2_cache_size, 0444, show_l2_cache_size, NULL), + _SYSDEV_ATTR(l2_cache_line_size, 0444, show_l2_cache_line_size, NULL), +}; + +static void register_cpu_online(unsigned int cpu) +{ + struct cpu *c = &per_cpu(cpu_devices, cpu); + struct sys_device *s = &c->sysdev; + int i; + + for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++) + sysdev_create_file(s, &cpu_core_attrs[i]); +} + +#ifdef CONFIG_HOTPLUG_CPU +static void unregister_cpu_online(unsigned int cpu) +{ + struct cpu *c = &per_cpu(cpu_devices, cpu); + struct sys_device *s = &c->sysdev; + int i; + + for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++) + sysdev_remove_file(s, &cpu_core_attrs[i]); +} +#endif + +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 int __init topology_init(void) { int cpu; + register_cpu_notifier(&sysfs_cpu_nb); + for_each_possible_cpu(cpu) { struct cpu *c = &per_cpu(cpu_devices, cpu); register_cpu(c, cpu); + if (cpu_online(cpu)) + register_cpu_online(cpu); } return 0; |